Careers

Assistant Accountant
📍 Osprey Quay, Portland (Office-Based Role)
💷 Salary from £28,500 per annum

An exciting opportunity has arisen at G3 Systems for an Assistant Accountant to join our Finance team at our Osprey Quay, Portland offices. This vacancy has become available following recent internal promotions and organic growth, reflecting both progression opportunities within the business and our continued commitment to strengthening our finance capability to support operations.

The Role

Reporting to the Finance Controller, the Assistant Accountant will support the effective delivery of financial controls, reporting, and transactional finance activities across the business.

Key responsibilities will include:

• Assisting with month-end processes, including journals, accruals, and prepayments
• Supporting the preparation of management accounts
• Balance sheet reconciliations
• Processing and reviewing purchase and sales ledger transactions
• Assisting with cashflow monitoring and forecasting
• Supporting internal and external audit requirements
• Ensuring compliance with company financial procedures and controls

About You

We are looking for a proactive and detail-oriented individual who is keen to develop their finance career within a growing engineering environment.

You will ideally have:

• Previous experience in a finance or accounts role
• AAT qualification (or studying towards) or equivalent
• Strong Excel skills and familiarity with accounting systems
• Excellent attention to detail and organisational skills
• A positive, team-focused attitude with a willingness to learn

What We Offer

• Competitive salary starting from £28,500 per annum
• Opportunities for professional development and study support
• A collaborative and supportive working environment
• The opportunity to grow your career within a well-established and expanding organisation
• 25 days annual leave
• 37.5 hours working week
• Private Medical Insurance Cover (BUPA)
• Life Cover (3.5x salary)
• Pension Plan
• Plus various salary sacrifice schemes (eBike, electric car purchase) and other life wellbeing platforms

If you are looking to take the next step in your accounting career within a dynamic and forward-thinking company, we would be pleased to hear from you.

To Apply:

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

About Us

We are a leading UK-based engineering and service solutions firm headquartered in Portland, Dorset.  We operate in the UK & internationally, providing a broad range of deployable infrastructure, construction, facilities, and support services to government, defence, and commercial clients.  The company is privately held and is part of the Intrepid Global Solutions group of companies, emphasising partnership-driven project delivery and operational excellence.

About the Role

To lead, develop and expand G3 Systems’ Deployable Infrastructure business portfolio across UK maritime and defence sectors, including but not limited to the Royal Navy, NavyPODS, AtlanticNET, and wider modular infrastructure programmes.

The postholder is accountable for identifying, qualifying and progressing opportunities that align with G3’s strategic capabilities, and for driving structured Business Development (BD) activity from market scanning through to handover for detailed capture and proposal development.

The role serves as a visible ambassador for G3 Systems, strengthening client relationships, enhancing market presence, and ensuring that the new business pipeline is accurate, actionable and aligned to business growth objectives.

Key Responsibilities

Strategic Market Development

• Build and maintain deep understanding of the maritime defence market, including customer priorities, funding cycles, capability gaps and competitor activity.
• Identify and evaluate market segments, prospective clients and contracting routes that align with G3’s technical and operational capabilities.
• Shape early client engagement to position G3 favourably ahead of formal procurement phases.

Client Engagement & Representation

• Represent G3 Systems to existing and prospective customers, presenting company capability, innovation initiatives and value propositions.
• Deliver high-quality presentations, briefings and technical/operational overviews tailored to the audience.
• Undertake structured networking, attendance at industry events, and targeted relationship-building with decision-makers, influencers and partners.

Opportunity Identification & Qualification

• Identify, assess and prioritise profitable new business opportunities, including early- stage intelligence gathering, procurement scheduling insight, competitor mapping and alignment to internal capability.
• Maintain accurate and timely updates to the G3 Systems New Business Pipeline, ensuring clear status visibility and forecast confidence.

Capture Preparation & Handover

• Lead, coordinate and de-risk upstream BD activity required to take opportunities from concept into formal capture, ensuring the business is well positioned before committing resources.
• Develop outline bid strategies, win themes, solution approaches and partnership models ahead of handover.
• As required, lead capture activity and support proposal development

Partnership & Supply Chain Development

• Identify, assess and cultivate relationships with potential teaming partners, specialist suppliers and subcontractors aligned to specific opportunities or strategic capability gaps.
• Support the creation of teaming agreements, NDAs and collaborative delivery models.

Marketing, Brand & External Positioning

• Support the development of marketing collateral, capability brochures, case studies and thought-leadership content.
• Identify PR, events and marketing channels that enhance G3 Systems’ reputation and visibility within the defence and infrastructure sectors.
• Contribute to ongoing improvements in brand messaging, website content, and customer-facing communications.

Governance, Processes & Cross-Functional Working

• Ensure all BD activities are aligned with internal governance requirements, including Gate Reviews for new opportunities.
• Work collaboratively with EP&P, Operations, Finance, ICT, Security and other business support teams to ensure opportunities are accurately costed, risk-assessed and viable.
• Comply with all Company Business Operating Procedures and contribute to the development or refinement of processes that support sustainable growth.

Records Management & Information Governance

• Maintain accurate, compliant and audit-ready records relating to BD and marketing activities in line with G3 Systems’ Records Retention Business Process.
• Ensure appropriate information security handling, including classification and storage requirements for official-sensitive material

Qualifications Required

Essential

• Minimum 5 years’ experience in a business development, capture, client engagement or strategic programme role within defence, engineering, maritime or complex infrastructure sectors.
• Degree-level education.
• Demonstrable project or programme management experience, with the ability to move seamlessly between strategic and delivery-focused activities.

Desirable

• Postgraduate qualification (MBA, Marketing, Defence Studies or similar).
• Formal capture management or bid-management training (APMP, Shipley, etc.)

Skills & Experience

Essential

• Strong leadership and stakeholder-management capability, with confidence operating at and liasing with senior levels.
• Proven ability to develop, manage and forecast new business pipelines with accuracy and discipline.
• Financial literacy, including budgeting, business case awareness and commercial sensitivity.
• High-quality presentation, communication and influencing skills.
• Experience in project/programme planning and structured BD methodologies.
• Proactive, self-starting and organised, with strong time-management, prioritisation and multitasking capability.
• Ability to handle sensitive information appropriately and operate within a regulated defence and security environment.

Desirable

• Bid writing or proposal development experience.
• Marketing, branding or PR experience (traditional or digital).
• Experience undertaking risk assessments or contributing to opportunity risk registers.
• Engineering background or understanding of modular/deployable infrastructure systems
• Development of the G3 Systems Business Development function and to improve our ability to identify, target and capture further work in the Royal Navy / Maritime sector

Benefits

• Competitive salary starting from £60,000 per annum
• 25 days annual leave
• 37.5 hours working week
• Performance Related Bonus programme
• Private Medical Insurance Cover (BUPA)
• Life Cover (3.5x salary)
• Pension Plan
• Plus various salary sacrifice schemes (eBike, electric car purchase) and other life wellbeing platforms

To Apply:

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

Job Opportunity: Buyer – G3 Systems (WTB Programme)

Location: Osprey Quay, Portland, DT5 1PY

Role Overview:
G3 Systems is seeking a motivated and proactive Buyer to support the delivery of the WTB Programme. The Buyer will be responsible for procuring materials and services essential for programme delivery while ensuring compliance with G3 Systems’ procurement policies and best practices. This role requires close collaboration with the WTB Programme Team and suppliers to ensure efficient and cost-effective procurement.

Key Responsibilities:

• Build and maintain strong relationships with suppliers, negotiating best prices, quantities, and delivery timescales.
• Research, select, and procure quality products and materials that meet contracted standards.
• Process Purchase Order Requisitions and issue Purchase Orders using Costpoint.
• Expedite orders and monitor the supply chain, reporting supplier issues to management promptly.
• Maintain WTB’s approved vendor list and ensure adherence to G3 Systems’ Vendor Assessment process.
• Track and report Supplier Non-Conformance.
• Ensure compliance with G3 Systems procurement procedures.
• Coordinate delivery of goods by liaising with suppliers and customers.
• Collaborate with the WTB Programme Team to identify purchasing needs.

Qualifications:

• GCSE-level qualification (or equivalent).
• CIPS Level 3 qualification.

Skills & Experience:

• Demonstrable experience in a procurement role.
• Experience managing supplier relationships.
• Strong analytical skills.
• Security cleared, or ability to achieve security clearance.
• IT literate with experience using an ERP system.
• Excellent communication skills.

Justification:
This role is a replacement for an internal promotion.

Why Join G3 Systems?
G3 Systems offers a collaborative and dynamic work environment where procurement plays a key role in programme success. Join our team to make a tangible impact on the WTB Programme while developing your career in supply chain and procurement.

What We Offer:

• Opportunity to work on high-profile international defence and government projects
• A collaborative and technically driven working environment
• Career development within a growing and specialist engineering & construction organisation
• Competitive salary and compensation scheme, minimum entry point salary starting at £30,000 per annum; based on experience
• 25 days annual leave
• 37.5 hours working week
• Private Medical Insurance Cover (BUPA)
• Life Cover (3.5x salary)
• Pension Plan
• Plus various salary sacrifice schemes (eBike, electric car purchase) and other life wellbeing platforms

We are seeking an experienced Commercial Manager to lead and manage all commercial and contractual aspects of our construction projects delivered under NEC4. This role will ensure value for money, commercial control, and full compliance with contractual terms and corporate governance from pre-contract through to project closeout. You will act as a key member of the construction leadership team, driving commercial discipline, managing risk, and supporting the successful delivery of our project portfolio.

Key Responsibilities

Commercial Leadership & Contract Management

• Lead all commercial and planning aspects across the construction department’s projects.
• Ensure proactive administration of NEC3/NEC4 contracts throughout their lifecycle, including early warnings (EWN), compensation events (CEs), applications for payment, variations and final accounts.
• Maintain robust commercial records including contracts, notices, valuations, correspondence, and change logs.
• Ensure strict commercial compliance with contract terms, company policies, governance frameworks and public-procurement rules (where applicable).

Pre-Contract, Procurement & Cost Control

• Support pre-contract activities including tendering, procurement and programme planning.
• Monitor and report on cost performance: earned value, forecasting, budget vs actual, change control, cost variances, and risk/opportunity management.
• Provide clear, accurate monthly or periodic commercial reports for clients and senior leadership.

Stakeholder Engagement & Leadership

• Provide strong commercial leadership, communicating effectively with internal and external stakeholders.
• Interface with clients, contractors, subcontractors, and internal teams (cost, planning, legal, procurement, finance) to ensure aligned commercial outcomes.
• Negotiate final accounts and settlements, ensuring lessons learned are captured.
• Coach, mentor and support junior commercial staff, fostering a culture of commercial awareness across the department.

Risk, Quality & Performance

• Identify, evaluate and manage commercial risks and opportunities, feeding into the project risk register and driving mitigation strategies.
• In partnership with the Construction Operations Manager, monitor progress, quality and commercial compliance through to project completion.
• Lead and support commercial meetings with clients and subcontractors, assigning tasks and monitoring performance outputs.

Qualifications Required

• Degree (or equivalent) in Quantity Surveying, Construction Management, Civil Engineering, Business or a related field.
• Professional membership (desirable) such as RICS, CIPS, AACE or similar.
• Accreditation in NEC contracting or commercial management highly advantageous.

Skills & Experience

• 5+ years’ proven experience in commercial or contract management on construction projects using NEC3/NEC4.
• Strong understanding of NEC processes: EWN, CEs, option selections, and contractual obligations.
• Experience across the full project lifecycle, from pre-contract to final account.
• Strong financial and commercial acumen with the ability to interpret and present cost reports and forecasts.
• Excellent negotiation, communication and influencing skills.
• Strong contract administration, attention to detail, and analytical capability.
• Ability to manage multiple priorities in complex, fast-paced environments.
• Proficiency with commercial/contract management software and MS Office; experience with cost/measurement tools desirable.
• Leadership ability with experience guiding teams and developing junior staff.
• Business-orientated mindset focused on value for money and commercial optimisation.

Why This Role is Needed

• To ensure full contractual and commercial compliance across our project portfolio.
• To provide accurate, timely reporting to senior leadership.
• To strengthen commercial capability and develop junior team members.
• To enhance commercial awareness within the construction department.
• To support the compliant and structured growth of the department.

Remuneration & Benefits

• Salary starting from £60,000 per annum (based on experience)
• 37.5 hours per week, Permanent full-time role
• Office-based with hybrid working opportunities
• 25 days annual leave
• Private Medical Cover
• Life Cover (3.5x salary)
• Pension Plan
• Work related UK and international travel, accommodation, and subsistence expenses are fully reimbursed in accordance with company policy
• Plus various salary sacrifice schemes and other life wellbeing platforms (i.e. YuLife, electric vehicle and electric bike schemes)

To Apply

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

We are a leading Engineering and Construction company, known for delivering innovative solutions internationally. We are currently seeking a skilled and motivated Electrical Design Engineer to join our dynamic engineering team. If you are passionate about electrical design and want to contribute to cutting-edge projects, this is an excellent opportunity for you to make a significant impact!

Job Description

As an Electrical Design Engineer, you will play a key role in producing comprehensive and innovative electrical designs, ensuring seamless integration of electrical systems into larger engineering projects. You will collaborate with a talented team of engineers to deliver technical solutions that meet the highest standards of quality, safety, and efficiency.

Key Responsibilities

• Design Creation: Produce conceptual designs, detailed designs, integration/installation drawings, design specifications, operational documentation, and validation evidence for electrical engineering solutions.
• Collaboration: Work closely with other design engineers to ensure the seamless integration of electrical systems into the overall project design.
• Compliance & Standards: Ensure all electrical design solutions meet safety, quality, technical, and commercial requirements.
• Third-Party Management: Manage third-party designers, ensuring their designs meet project requirements. Provide design support to installation and commissioning teams to ensure smooth implementation.
• Design Reviews: Lead and participate in internal and external design review meetings, providing expertise and guidance on electrical design matters.
• Continuous Improvement: Identify and support opportunities for cost savings, efficiency improvements, and overall business improvements within electrical design processes.
• Tenders & Budgets: Assist in preparing technical tenders and budgets, providing electrical design input to ensure accurate scope definition.
• Quotation Requests: Handle requests for quotations (RFQs) for specialist equipment related to electrical systems.
• BOM Production: Generate and maintain accurate Bills of Materials (BOMs) for electrical systems and components.

Skills and experience required

• Degree or higher education qualification (HNC/HND) in electrical engineering with at least 3 year’s post qualification experience in a design environment.
• Previous experience of integration of multiple services within containerised or modular builds advantageous.
• Proficient in the use of Autodesk AutoCAD, (experience working with 3D CAD systems is advantageous but not critical).
• Proficient in the use of Microsoft Office products including Word, Excel & Outlook.
• Experience with simulation and analysis tools for electrical systems (such as ‘Trimble MEP’ / DIALux / Relux).
• The identification and rectification of defects encountered during operational service.
• Working knowledge of 18th Edition (amendment 2) wiring regulations.
• Experience in LPS and earthing systems.
• Experience in EMC and Tempest installations.
• Working knowledge of relevant BS / ISO standards.
• Excellent problem-solving skills and attention to detail.
• Effective communication and teamwork abilities.
• Excellent organisational and time management skills.
• Ability to work under pressure, meet targets and work to deadlines.

Location: Osprey Quay, Portland (Hybrid)

Start: Q4 2025

Benefit package: £42,000 – £48,000pa.

Competitive Salary; Private Medical Cover; Life Cover (3.5x salary); Pension Plan; Salary sacrifice schemes (Electric vehicles and eBikes)

To Apply:
Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

G3 Systems Ltd

Location: Osprey Quay, Portland, DT5 1PY

G3 Systems is seeking a skilled and motivated Electrician to join our dynamic production team. This is an exciting opportunity to work on a variety of projects both in the UK and overseas, contributing to high-quality engineering solutions within a fast-paced environment.

The Role

As an Electrician at G3 Systems, you will play a key role in supporting project delivery through electrical installation, testing, and fault diagnosis activities. You will work collaboratively across trades to ensure production targets, quality standards, and safety requirements are consistently met.

Key Responsibilities

• Work on G3 Systems projects as an electrical tradesperson
• Carry out periodic electrical testing of build units, both on and off site
• Undertake fault finding, diagnosis, and repair of electrical systems and equipment
• Complete production tasks as directed by the Production Manager
• Support and control integration production sub-tasks
• Identify materials required to complete assigned tasks
• Assist with non-electrical tasks alongside other trades when required
• Monitor build quality and report production snags in line with G3 processes
• Contribute to continuous improvement initiatives to enhance operational efficiency
• Travel within the UK and overseas as required for company projects
• Comply with G3 Systems Integrated Management System (IMS) procedures
• Conduct local Health & Safety risk assessments

Qualifications

• City & Guilds 2382-18 – 18th Edition Wiring Regulations
• City & Guilds 2397 – Inspection & Testing
• City & Guilds 2394 – Initial Verification
• City & Guilds 2391 – Periodic Inspection & Testing

Skills & Experience

• Previous experience within a trade or production environment
• Ability to read and interpret technical drawings and schematics
• Competent in the use of hand, mains-powered, and battery-operated tools
• Strong attention to detail with a focus on quality and safety
• Ability to follow instructions accurately and work independently or as part of a team
• Basic IT skills

Why Join G3 Systems

• Opportunity to work on diverse and challenging projects
• Exposure to both UK and international assignments
• A supportive team environment with a focus on continuous improvement
• Competitive salary and benefits package

What We Offer:

• Opportunity to work on high-profile international defence and government projects
• A collaborative and technically driven working environment
• Career development within a growing and specialist engineering & construction organisation
• Competitive salary and compensation scheme, minimum entry point salary starting at £34,000 per annum; based on experience
• 25 days annual leave
• 37.5 hours working week
• Private Medical Insurance Cover (BUPA)
• Life Cover (3.5x salary)
• Pension Plan
• Plus various salary sacrifice schemes (eBike, electric car purchase) and other life wellbeing platforms

Mechanical Design Engineer

Location: Hybrid – based from our Portland, Dorset office at Osprey Quay

Design systems that are built, tested, and deployed in some of the world’s most demanding environments.

At G3 Systems, we deliver modular and containerised deployable infrastructure used in some of the world’s most demanding environments, from defence and government operations to complex remote deployments.

We’re looking for a Mechanical Design Engineer to join our Deployable Infrastructure Group, helping turn concepts into real-world systems that are manufactured, deployed, and used in the field.

With our integration facility located on-site, you’ll have the unique opportunity to see your designs come to life. Watching systems move from concept through build, integration, and final deployment.

What you’ll be doing

You’ll be involved across the full design lifecycle, working closely with engineers, project managers, and the supply chain to deliver practical, high-quality solutions.

You will:

• Own and develop 3D models and technical drawings for manufacture and integration
• Support design analysis and validation, including FEA where required
• Create and manage Bills of Materials and technical documentation
• Support the transition from design to build, ensuring systems are ready for manufacture and integration
• Work closely with the on-site integration facility, supporting builds and resolving real-world engineering challenges
• Collaborate with suppliers and internal teams to ensure designs are delivered as intended
• Contribute to technical proposals, tenders, and project delivery

Why this role is different

• Your work will be built and used, not just designed
• You’ll see your designs progress from concept to physical build on-site
• Direct access to the integration facility means you can solve problems in real time and continuously improve designs
• You’ll work on complex, multi-system integrations
• Projects are varied, no two are the same

What we’re looking for

Essential

• Degree in Mechanical Engineering (or similar)
• Around 3+ years’ experience in a mechanical design role
• Strong 3D CAD experience (Autodesk Inventor preferred)
• Experience working on designs through to manufacture or delivery
• Eligible for (or able to obtain) security clearance

Desirable

• AutoCAD experience
• FEA experience
• Knowledge of BS / ISO standards
• Experience with BoMs and technical documentation
• Experience working with suppliers / RFQs
• Systems engineering experience
• Multi-discipline integration (mechanical, electrical, HVAC, etc.)
• EMEA project experience

Who you are

You’re someone who:

• Enjoys solving practical engineering challenges
• Takes pride in producing high-quality, buildable designs
• Wants to see your work physically built and working in the real world
• Works well with others across multiple engineering disciplines
• Is comfortable working in a fast-moving, delivery-focused environment

Not sure if you meet every requirement?

We know great candidates don’t always meet every requirement. If you’re interested in the role and feel it could be a good fit, we’d encourage you to apply.

We value different perspectives and are committed to building an inclusive team.

What you’ll get in return

• Opportunity to work on high-profile international projects
• A collaborative, technically driven team
• Exposure to real-world engineering challenges and delivery
• Career development within a growing, specialist organisation

Benefits include:

• Competitive salary
• 25 days annual leave
• Flexible 37.5-hour working week
• Private Medical Insurance (BUPA)
• Life cover (3.5x salary)
• Pension scheme
• Salary sacrifice schemes (including eBike and electric vehicles)
• Access to wellbeing platforms

Location & Working Pattern

This role is offered on a hybrid basis, with time split between home working and our Portland, Dorset office at Osprey Quay.

To Apply:

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

Job Title: Production Technician
Location: Osprey Quay, Portland (Site-Based)
Contract: Fixed Term – 6 Months
Company: G3 Systems

About the Role

G3 Systems is seeking a proactive and skilled Production Technician to join our team at our Osprey Quay, Portland site on a 6-month fixed-term contract.

This is a hands-on role within a fast-paced production and engineering environment, supporting the delivery of high-quality integrated systems. The successful candidate will work closely with the Production Manager and wider team to ensure production targets, quality standards, and safety requirements are consistently met.

Key Responsibilities

• Complete production tasks as directed by the Production Manager
• Identify materials required to successfully achieve production tasks
• Monitor build quality and report production snags in accordance with company processes
• Assist with continuous improvement initiatives to enhance operational efficiency
• Comply with Integrated Management System (IMS) operating procedures
• Maintain accurate project route cards during production
• Conduct local Health & Safety risk assessments
• Work safely at all times, ensuring the safety of self and others
• Maintain a tidy and organised work area as part of daily activities
• Ensure the safe use, storage, and handling of COSHH-controlled items
• Maintain tooling and integration facility equipment
• Travel within the UK and overseas as required on company business
• Carry out other tasks within your ability and competence as directed

Qualifications

• Relevant trade qualification with appropriate experience
• City & Guilds Part 1 & 2 (or equivalent) preferred

Skills & Experience

• Previous experience within a production or engineering environment
• Ability to read and interpret technical drawings
• Competent in the use of hand, mains-powered, and battery-operated tools
• Ability to follow instructions clearly and work safely
• Basic IT skill

What We Offer:

• Opportunity to work on high-profile international defence and government projects
• A collaborative and technically driven working environment
• Competitive salary
• 25 days annual leave (pro rata)
• 37.5 hours working week
• Life Cover (3.5x salary) during assignment
• Pension Plan

To Apply:

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

Project Accountant

Location: Hybrid – Portland, Dorset (Osprey Quay)

Design systems that are built, tested, and deployed in some of the world’s most demanding environments.

At G3 Systems, we deliver modular and containerised deployable infrastructure used in some of the world’s most demanding environments, from defence and government operations to complex remote deployments.

We’re looking for a Project Accountant to join our Finance Team, helping turn concepts into real-world systems that are manufactured, deployed, and used in the field.

With our integration facility located on-site, you’ll have the unique opportunity to see your contribution come to life.  Financial oversight and involvement in delivering systems from concept through build, integration, and final deployment, ensuring cost control and budget adherence throughout.

What you’ll be doing

• Own project financials: budgets, forecasts, and cost reporting
• Track project performance and flag risks or opportunities
• Support project managers with commercial and financial decisions
• Manage contract variations, invoices, and cost allocations
• Work closely with operations, procurement, and finance teams
• Produce clear management reports for stakeholders
• Ensure compliance with company policies and accounting standards
• Drive process improvements and best practice in project finance

Why this role is different

• Not your typical desk-based finance role – you’ll be embedded within live projects, working alongside operational and programme teams
• You’ll influence decisions in real time, not just report the numbers
• Direct exposure to high-value, complex projects with real commercial impact
• Opportunity to move beyond traditional accounting into true business partnering
• Be part of a fast-paced, delivery-focused environment where your insight drives project success

What we’re looking for

Essential

• CIMA/ACCA/ACA
• Minimum of 3 years of accounting experience.
• May consider a QBE accountant

Who you are

You’re someone who:

• Brings a positive, adaptable mindset and thrives on supporting project delivery
• Has strong attention to detail and communicates confidently with project teams and stakeholders
• Enjoys collaborating across functions, building relationships with operational, commercial, and finance colleagues
• Has experience in project accounting, ideally within long-term, high-value programmes
• Comes from engineering, manufacturing, construction, or similar project-focused environments
• Is comfortable working in a fast-paced, delivery-driven environment where priorities evolve quickly
• Has a proactive approach, spotting risks and opportunities to support project success

Not sure if you meet every requirement?

We know great candidates don’t always meet every requirement. If you’re interested in the role and feel it could be a good fit, we’d encourage you to apply.

We value different perspectives and are committed to building an inclusive team.

What you’ll get in return

• A key role within a growing, project-driven organisation where finance is embedded in operations
• Direct involvement in complex, high-value projects with real commercial impact
• The opportunity to work closely with operational and programme teams, influencing decision making
• A fast-paced, delivery-focused environment offering variety, ownership, and responsibility
• The chance to move beyond reporting into true business partnering and add measurable value
• Ongoing development and the opportunity to shape and improve finance processes
• A collaborative and supportive team culture

Benefits include:

• Competitive salary of £45,000 per annum
• 25 days annual leave
• Flexible 37.5-hour working week
• Private Medical Insurance (BUPA)
• Life cover (3.5x salary)
• Pension scheme
• Salary sacrifice schemes (including eBike and electric vehicles)
• Access to wellbeing platforms

Location & Working Pattern

This role is offered on a hybrid basis, with time split between home working and our Portland, Dorset office at Osprey Quay.

About G3 Systems

G3 Systems delivers deployable containerised and modular infrastructure solutions supporting defence, government and international construction programmes. Our projects include complex engineered systems deployed globally in challenging and security-conscious environments.

G3 Systems is looking for an experienced Project Engineer to support the delivery of technically complex engineering projects in the UK and overseas.

Reporting to the Project Manager, you’ll coordinate and assure technical activities across the project lifecycle — from design reviews and supplier engagement to installation, commissioning and acceptance.

Key Responsibilities:

• Provide technical leadership across project teams
• Manage technical documentation, plans and reporting
• Act as the interface between Engineering, Project and Suppliers
• Oversee installation, testing & acceptance (Trials, V&V)
• Manage non-conformances and drive corrective actions
• Support supplier audits and inspections (UK & Europe travel required)
• Promote a strong Mission Zero safety culture

About You:

• Engineering degree (Mechanical/Electrical preferred)
• 5+ years in an engineering environment
• Project Engineering experience essential
• Knowledge of Systems Engineering & relevant standards
• Security Cleared or eligible to obtain clearance
• Strong communicator with excellent organisational skills

This role includes significant UK and European travel.

What We Offer:

• Opportunity to work on high-profile international defence and government projects
• A collaborative and technically driven working environment
• Career development within a growing and specialist engineering & construction organisation
• Competitive salary starting from £49,000 p.a.
• 25 days annual leave
• 37.5 hours working week
• Private Medical Insurance Cover (BUPA)
• Life Cover (3.5x salary)
• Pension Plan
• Plus various salary sacrifice schemes (eBike, electric car purchase) and other life wellbeing platforms

If you’re motivated, technically strong and ready to support high-quality international project delivery,  we’d love to hear from you.

To Apply:

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

G3 Systems Ltd is seeking an experienced Project Manager to lead the delivery of complex deployable Engineered System Solutions (ESS) projects supporting the MOD, Home Office, and international defence clients. This role is pivotal in delivering high-value, mission-critical solutions on time, on budget, and to specification.

You will take full ownership of multiple projects, managing multi-disciplined teams, resources, risk, and budgets, while ensuring compliance with safety, quality, and technical standards. This is a hands-on leadership role requiring strong engagement with defence stakeholders, suppliers, and government clients, ensuring the highest levels of operational and customer excellence.

Key Responsibilities:

• Deliver multiple ESS projects for defence and government clients, ensuring contractual requirements are met
• Lead multi-disciplined project teams across electrical, mechanical, and technical disciplines
• Own project budgets, delegated financial responsibility, and accurate reporting
• Develop and maintain project risk registers, KPIs, and dashboards
• Build and maintain strong stakeholder relationships with MOD, Home Office, and international defence partners
• Produce and maintain MS Project plans, schedules, and timely technical and budgetary reports
• Support business development for new defence and government contracts
• Drive continuous improvement initiatives, identifying cost savings, efficiency gains, and operational improvements
• Facilitate workshops, training, and coaching to enhance team capability

Qualifications & Experience:

• Recognised Project Management qualification (APM preferred)
• Recognised Electrical or Mechanical Engineering qualification (minimum C&G level or equivalent)
• Minimum 3 years’ Project Management experience in defence or government projects
• Proven track record managing MOD, Home Office, or international military contracts
• Strong planning, programme management, and stakeholder engagement skills
• Ability to influence decisions through robust business cases
• Passion for continuous improvement and operational excellence
• Excellent communication, record keeping, and organisational skills

Why G3 Systems?

This is an opportunity to work on critical deployable engineered solutions that support defence and security operations worldwide. You will have responsibility for high-profile projects, exposure to international operations, and the chance to shape strategic improvement initiatives across ESS.

International travel required.

What We Offer:

• Opportunity to work on high-profile international defence and government projects
• A collaborative and technically driven working environment
• Career development within a growing and specialist engineering & construction organisation
• Competitive salary and compensation scheme
• 25 days annual leave
• 37.5 hours working week
• Private Medical Insurance Cover (BUPA)
• Life Cover (3.5x salary)
• Pension Plan
• Plus various salary sacrifice schemes (eBike, electric car purchase) and other life wellbeing platforms

If you’re motivated, technically strong and ready to support high-quality international project delivery,  we’d love to hear from you.

To Apply:

Please send your CV by email to recruit@g3-systems.co.uk.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

G3 Systems is seeking a dynamic and detail-oriented Proposal Engineer professional to join our team as a Technical Bid Specialist. In this role, you will play a crucial part in interpreting technical requirements and developing cost-effective design solutions. You will collaborate closely with cross-functional teams to prepare comprehensive work structures, specifications, and proposals, ensuring alignment with regulatory standards and company processes.

Key Requirements

Essential Criteria:

• Proven experience in interpreting technical requirements and developing cost-effective design solutions.
• Strong knowledge of Work Breakdown Structures (WBS) and Equipment Breakdown Structures (EBS).
• Experience in preparing Scopes of Work, Procurement Specifications, and Programme Plans.
• Familiarity with supplier selection processes and regulatory approvals.
• Excellent communication skills with the ability to liaise effectively with customers and subcontractors.
• Experience in producing complex technical bids and proposals.
• Strong organisational skills with the ability to estimate effort and materials required for projects.
• Proficiency in presenting technical solutions to stakeholders and customer selection teams.
• Relevant qualifications in engineering, project management, or a related field.

Desirable Criteria:

• Experience in sales and marketing support within a technical environment.
• Familiarity with the commercial aspects of bid proposals and supply chain functions.
• Previous involvement in Bid Review meetings or similar processes.
• Understanding of Capture Plans and strategic business development.
• Strong analytical skills and attention to detail.
• Experience working in a similar industry or sector.

Responsibilities

The successful candidate will:

• Technical Interpretation:
  • Analyse technical requirements to create cost-effective design solutions that meet project goals.
• Documentation Preparation:
  • Develop Work Breakdown Structures, Equipment Breakdown Structures, Scopes of Work, Procurement Specifications, Drawings/Schematics and Programme Plans to facilitate project management.
• Supplier Assessment:
  • Evaluate and engage with potential suppliers and subcontractors, ensuring alignment with project needs.
• Supplier Selection Support:
  • Assist in the supplier selection process by working with quality and supply chain personnel, ensuring compliance with regulatory approvals and company processes.
• Collaboration with Commercial Functions:
  • Work closely with the Commercial and Supply Chain teams to address relevant aspects in bid proposals.
• Effort and Material Estimation:
  • Contribute to the estimation of the resources required for various tasks and programmes, contributing to project planning and budgeting.
• Technical Bids Production:
  • Collaborate with bid or project teams to produce comprehensive technical bids and proposals for clients.
• Sales and Marketing Support:
  • Manage the timely preparation and provision of technical information needed for business proposals and customer quotations.
• Customer Liaison:
  • Communicate with customers’ technical and commercial personnel, participating in Bid Review meetings to ensure clarity and understanding.
• Presentation Skills:
  • Effectively present the technical aspects of bids to customer selection teams, showcasing the value of proposed solutions.

Location:         

Primarily on-site at Osprey Quay, Portland, Dorset, UK, with hybrid working opportunities and required overseas travel as necessary

Qualifications required (essential):

Degree or HND level qualification in engineering discipline

Qualifications required (desirable):

• BSc (Hons) in Construction Management or Construction Project Management
• Batchelor of Engineering
• Civil Engineering BEng (Hons)
• Civil Engineering MEng (Hons)

Skills / Experience Required:

• A broad engineering background, ideally spanning electrical & mechanical disciplines, including Design, Specification, Installation, Test and Commissioning.
• Building Services Experience – with specific expertise in one or more disciplines from, Electrical, Safety, HVAC, Mechanical, Water & Waste Systems.
• Experience of containerised systems desired, but not essential
• Ability to collate, prepare and present well structured, coherent written specifications and technical documentation. Previous experience in producing Technical Proposals & Bids sought.
• Ability to use appropriate design packages including AutoCAD and AutoDesk Inventor
• Competent User of Microsoft Office packages, in particular Word, Excel

Remuneration & Benefits:

• Salary starting from £45,000 per annum (based on experience)
• 37.5 hours per week
• 25 days annual leave
• Private Medical Cover
• Life Cover (3.5x salary)
• Pension Plan
• Work related UK and international travel, accommodation, and subsistence expenses are fully reimbursed in accordance with company policy
• Plus various salary sacrifice schemes and other life wellbeing platforms (i.e. YuLife, electric vehicle and electric bike schemes)

 We are looking for someone to support with deployable infrastructure rather than construction.

To Apply:

Please send your CV by email to.

Kindly ensure that you only attach your CV and include a brief covering email. Please do not send any other attachments.

G3 Systems has recently secured a fixed-term UK service engineering contract dealing with Precision Gunnery Training Equipment (PGTE). To support this exciting programme, we are seeking a Field Services Engineer to join our team delivering first-class technical support.