Senior Complex Systems Engineer / Consultant – Underwater Complex Systems

BMT; Teddington; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Private Medical

Enhanced Pension

26 Days Annual Leave

Holiday Trading

Retail Vouchers

Professional Subscriptions

Job summary

BMT is seeking a Senior Complex Systems Engineer to deliver high-quality engineering support for submarine combat systems. You will operate within a specialist team, collaborating across projects and customer delivery lifecycles to ensure milestones are met and technical excellence is achieved.

The role offers flexible and hybrid working arrangements across UK offices, with opportunities to influence defence sector capabilities and consultancy expansion.

Qualifications

• Incorporated Engineer (IEng) or working toward with 18 months to achieve.
• Level 5 or higher Engineering qualification or equivalent experience.
• Experience in defence, naval or underwater systems engineering.
• Basic knowledge of MOD/SDA stakeholders.

Responsibilities

• Deliver high-quality engineering support across submarine combat systems and underwater complex systems.
• Collaborate with multi-disciplinary teams and project managers to shape delivery approaches and plans.
• Monitor progress, identify risks, and communicate with stakeholders at all stages of delivery.
• Contribute to expanding consultancy services into emerging non-defence underwater domains.

Skills

Submarine systems

MOD lifecycle

Network architecture

Defence engineering

Education

IEng status / pursuing

Engineering qualification Level 5+

Tools

Platform Management Systems

MOD CADMID lifecycle

Job description

Description

Job Title

Senior Complex Systems Engineer / Consultant – Underwater Complex Systems

Contract Type

This role is available part-time, job-share or full time. This is because we want the best people for our roles, and we recognise that sometimes those people aren’t available full-time.

Flexibility

In terms of location, we have offices in London, Bath, Bristol, Weymouth, Glasgow or Fareham and we are happy to explore flexible and hybrid working arrangements.

Eligibility for this Role

• Be a UK-born sole national.
• Have held no other nationality at any time.
• Have continuously resided in the United Kingdom for the past five years.
• Be able to obtain and maintain full UK security clearance in accordance with government vetting standards.
• Provide satisfactory evidence of identity, nationality, and residency as part of the clearance process.

Department

Technical Capability

Location

United Kingdom

About BMT

BMT is dedicated to tackling the most crucial engineering challenges of our era, fostering an environment where individuals with exceptional technical expertise provide meaningful, practical solutions. Committed to creating a safer, more efficient, effective, and sustainable future, BMT values diversity, equity, and inclusion, recognisng their pivotal role in achieving our business purpose. Learn more about BMT at www.bmt.org.

At BMT, we pride ourselves on being a verified flexible workplace, providing freedom and choice. We understand not everyone has the same needs in order to make work work for them and their lives - we'd love you to discuss any requirements for flexibility with us - we can't promise to fulfil every request but we do promise to listen to what matters to you. Learn more about our flexible status at Flexa Careers

Why Work for Us?

Benefits

Joining BMT means gaining access to a comprehensive set of employee benefits designed to empower your success. In addition to a competitive salary, our offerings encompass health, family, finance, and personal development, including:

• Private Medical (family coverage)
• Enhanced Pension
• 18 weeks enhanced maternity pay (after a qualifying period of 1 year)
• Family friendly policies
• Committed to an inclusive culture
• Wellbeing Fund – an annual fund for personal hobbies or interests
• 26 Days Annual Leave (plus bank holidays)
• Holiday Trading
• Retail Vouchers
• Professional Subscriptions

About The Role

As a Senior Complex Systems Engineer (Grade 4), you will play a key role in delivering high‑quality engineering support across submarine combat systems and mission‑critical underwater complex systems. You will operate within a specialist team of Mission and Complex Systems engineers and consultants, contributing to the successful delivery of engineering projects or sub‑projects of varying scope, scale, and technical complexity.

Working both independently and as part of multi‑disciplinary teams, you will be engaged throughout the full lifecycle of customer delivery. You will collaborate closely with Project Managers to shape delivery approaches, identify and mitigate risks, develop robust project plans, and monitor and report progress against agreed schedules. You will also help to ensure effective stakeholder engagement and communication at all stages of project delivery.

In partnership with our customers, you will support the achievement of key project milestones and deliverables, particularly in relation to sustaining in‑service capabilities and developing the next generation of complex submarine combat system solutions.

Drawing on BMT’s extensive experience in defence‑related engineering, including the management and operational employment of advanced submarine combat systems, you will also contribute to the expansion of our consultancy and engineering services into emerging non‑defence underwater complex system domains.

About You

You’re an enthusiastic team player with a strong passion for your area of expertise. You bring demonstrable experience and specialist knowledge in the operation and support of complex submarine combat systems or other complex underwater mission systems. Ideally you will have knowledge and experience in the design, procurement, delivery into service and support of complex submarine combat systems, along with a solid understanding of MOD business processes relevant to combat and mission systems engineering.

You’re an articulate, informed, and persuasive communicator who exercises diplomacy and discretion when engaging with others—both internally and externally. You have a sharp analytical mind, able to quickly interpret complex data and use insights to identify options, make sound recommendations, and support robust, defendable decisions.

You will have actively maintained knowledge in the submarine Combat Systems area. You will be competent enough to provide detailed and specific advice regarding the application of your specialized area to both BMT internal stakeholders and our customer base.

Technical Competencies

• Comprehensive technical and/or Operational understanding of, Command, Control, Communications, Combat and Mission enabling systems.
• Preferably experienced on UK RN submarine/surface platforms.
• Familiar with other complex systems such as Platform Management Systems and understanding of computer networks architecture.
• Knowledge (desirable Thorough) of the engineering artefacts required throughout the MOD CADMID lifecycle.

Qualifications & Experience

• Incorporated Engineer (IEng) or working toward with ability to achieve in 18 months.
• Level 5 or higher Engineering qualification (or equivalent experience).
• Experience in defence, naval or underwater systems engineering environments. Basic (desirable Thorough) understanding of the defence procurement policy, process and procedures.
• Basic (desirable Thorough) knowledge of the MOD/SDA stakeholders and industry suppliers.

What's Next?

If you are ready to contribute your skills and passion to a dynamic team addressing impactful challenges, we invite you to apply for this exciting opportunity with BMT. Join us in shaping a safer, more efficient, and sustainable future.

A message to recruitment agencies: We receive applications exclusively via our ATS. Please note that we do not accept CVs submitted via email to the HR department or staff within our Operational teams. We will not progress CVs shared on a speculative basis by email and you accept our right to pursue such candidates with no obligation to third‑party terms and conditions or liability to a fee