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BAE Systems

Senior Engineering Specialist – Systems – Mission System Architect – C2 & Infrastructure

Salary:  £89,520 per annum
Location:  Portsmouth, United Kingdom
Location flexibility:  3 office days / week – Hybrid options are dependant on role and can range from fully remote to on-site full time
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Job Description

Job Title: Senior Mission System Architect – C2 (Command & Control) & Infrastructure

Location: Portsmouth (Broad Oak) or Frimley, Filton, Dorchester, hybrid – 3 days on site – this role will require routine travel to other southern BAE sites within UK and occasionally internationally.

Salary: Up to £89, 520 dependent on experience

Who we are:

Join BAE Systems and you’ll be part of something bigger. As a valued member of our global colleague network, you’ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You’ll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us.

From the depths of the ocean, to the far reaches of space, there’s no limit to where a career at BAE Systems could take you.

What you’ll be doing:

As a Senior Mission System Architect (C2 & Infrastructure), you will provide technical leadership in the architecture, design, integration and assurance of mission-critical command and control systems and hosting infrastructure for future maritime platforms. You will define architectural strategies that enable Hybrid Navy capabilities, ensuring solutions are modular, secure, resilient, interoperable and scalable across multiple domains and coalition environments. Working closely with customers, programmes, suppliers and industry partners, you will influence strategic direction, champion modern digital technologies and open architectures, and deliver robust disaggregated mission system solutions that support operational effectiveness, future growth and export opportunities.

Core duties:

  • Lead end-to-end C2 and infrastructure architecture strategy and governance.
  • Define scalable, secure, hosting environments supporting mission-critical operations.
  • Champion open architectures, interoperability standards and digital engineering approaches.
  • Embed cyber resilience, assurance and compliance throughout architectural designs.
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Working at BAE Systems

3 office days / week – Hybrid options are dependant on role and can range from fully remote to on-site full time

A little flex time – We offer a range of hybrid and flexible working arrangements depending on the role you apply for – explore your options with our recruiter during the application process.

Company benefits

Adoption leave
Annual bonus
Buy or sell annual leave
Collaboration spaces
Cycle to work scheme
Electric Car Salary Sacrifice
Employee discounts
Enhanced maternity leave – 26 weeks paid, up to 52 weeks total, with the option of returning to work on reduced hours for the first 13 weeks
Enhanced paternity leave – 4 weeks for eligible employees
Enhanced pension match/contribution
Family health insurance
Fertility treatment leave
Gym membership – Discounts available
Health insurance
In house training
Learning license
Lunch and learns
Mental health support
Mental health first aiders
Mental health platform access
Modern office
Neonatal leave
Open to compressed hours
Open to job sharing
Open to part time work for some roles
Open to part-time employees
Pregnancy loss leave
Private booths
Referral bonus
Relocation packages
Reservist leave – 15 days
Salary sacrifice
Secure on-site parking
Share options
Shared parental leave
Mentoring

Awards & Accreditations

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Top 5 - Most loved - Large companies

Flexa awards 2026
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  • Influence customers, partners and programmes to align architectural direction.
  • Ensure high-performance, reliable and future-ready command and control solutions.

    • Essential skills:

    • A degree in Engineering (or a related subject) – Full membership of an appropriate engineering institution and be a Chartered Engineer.
    • Extensive experience in force-level system-of-systems architectural design and maritime defence integration.
    • Strong expertise in C2 systems, distributed infrastructure, cyber security and digital engineering.

    Combat System Engineering Team:

    Within the dynamic and rapidly expanding Naval Ships Combat Systems business, you will form part of a highly skilled team of system architects charged with shaping the future of maritime mission systems. Working across domestic and international programmes alongside enterprise partners, in bringing to bear your specialist expertise, you will ensure that candidate solutions are innovative, future-force-ready, operationally relevant and coherent with customer and business needs. .

    Why BAE Systems?

    Here you’ll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work, this is a place where you can grow your career with confidence and be empowered to be your best. You’ll be recognised for your contribution and enjoy rewards tailored to what’s most important to you and your family, support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with a strong sense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make.

    A place where everyone can thrive:

    We’re committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do.

    Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

    Closing Date: 22nd September 2026, interviews for this role will take place w/c 12th October

    We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

    #LI-AP1

    #LI-hybrid

    #combatsystems

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    Company employees:

    Around 110,000

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