Principal Systems Engineer

AtkinsRéalis

. Lead and tailor the application of systems engineering processes (e.g.

Posted 5/5/2026full-timeLondon • 🇬🇧 United KingdomLeadWebsite

About the role

Key responsibilities & impact

Lead and tailor the application of systems engineering processes (e.g. ISO 15288) across the full engineering lifecycle, providing direction and assurance to project teams.
Apply and guide the use of MBSE approaches and tools (e.g. Sparx EA, Cameo), confidently using modelling languages and architectural frameworks such as UML/SysML, ArchiMate, TOGAF and MODAF.
Lead requirements engineering activities, ensuring robust traceability through to verification and validation and managing requirement maturity and change.
Build and maintain a strong network in the organisation to support the growth of the practice.
Use your expertise and experience to develop the team through coaching and mentoring.
Select, tailor and implement appropriate engineering lifecycles, balancing technical rigour with delivery pragmatism.
Integrate complex systems across diverse military and civilian platforms (including submarines, aircraft, ships, vehicles, and advanced power and energy systems), addressing system‑of‑systems challenges.
Lead technical work packages or small teams, operating within a range of development and delivery methodologies.
Apply a working knowledge of the MOD acquisition framework, using Knowledge in Defence (KiD) to inform decision‑making and stakeholder engagement.
Build and maintain trusted relationships with clients and stakeholders, clearly communicating complex technical issues to non‑engineers and senior decision‑makers.

Requirements

What you’ll need

Degree qualified (Level 6 or above) in a relevant STEM subject or possess equivalent depth of experience in an engineering field.
Professional recognition with an appropriate institution, such as CEng or CSEP.
Experience in selecting and using MBSE approaches and tools (e.g., Sparx EA, Cameo).
Knowledge of modelling languages and architecture frameworks, including UML/SysML, ArchiMate, TOGAF, and MODAF.
Comprehensive knowledge of engineering lifecycles, including their selection, tailoring, and implementation.
A detailed understanding of the wider aspects of delivery, such as commercial, finance and planning.
Experience integrating complex systems, such as military and civilian platforms (submarines, aircraft, ships, vehicles), civilian aircraft systems, and advanced power and energy systems.
Ability to apply systems engineering processes (e.g., ISO 15288:2023) across the lifecycle.
Proven track record in managing projects and teams across various development methods.
Deep understanding of engineering within the MOD’s acquisition framework and Knowledge in Defence (KiD).
Strong interpersonal skills, with the ability to build trusted relationships.
Ability to understand, simplify, and explain subject matter to non-engineers and senior stakeholders.

Benefits

Comp & perks

Explore the rewards and benefits that help you thrive – at every stage of your life and your career.
Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices.
Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise.
Combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

systems engineering processesrequirements engineeringmodelling languagesUMLSysMLArchiMateTOGAFMODAFengineering lifecyclesintegration of complex systems

Soft Skills

coachingmentoringcommunicationrelationship buildingstakeholder engagementteam leadershipproject managementtechnical assurancenetworkingsimplifying complex issues

Certifications

CEngCSEP