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Expleo Group

Senior Systems Engineer

Expleo Group

. Develop and mature FCAS effects optimisation concepts for future capability development .

Posted 10/22/2026full-timeStevenage • United KingdomSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in systems engineering, concept development, and operational analysis within a Defence environment, with a strong focus on producing engineering artefacts and engaging with stakeholders. Proficient in Agile methodologies and capable of conducting capability assessments and trade-off analyses.

Highest-signal resume keywords
Systems Engineering ExperienceOperational AnalysisAgile Project EnvironmentsTechnical Communication SkillsFCAS Programme Experience

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Concept DevelopmentFunctional DecompositionSystems ModellingCapability AssessmentTrade-Off AnalysisEngineering Artefacts DevelopmentMilitary Operational Effects AnalysisSystems-Of-Systems EngineeringBehavioural DiagramsFunctional Architecture
Soft Skills
Stakeholder EngagementAnalytical ThinkingCritical ThinkingCollaborative WorkWritten Communication
Tools & Technologies
Agile ToolsetsConfiguration-Controlled Environments
Certifications & Qualifications
UK Security Clearance Eligibility
Industry Keywords
FCASWeapon SystemsGuided WeaponsCONOPS DevelopmentDefence ArchitectureCapability Modelling

About the role

Key responsibilities & impact
  • Develop and mature FCAS effects optimisation concepts for future capability development
  • Generate and document concept assumptions, constraints, dependencies and operational considerations
  • Engage with weapon programme teams on current and future capability applications across engagement scenarios
  • Identify synergies, interactions and relationships between weapon systems and operational effects
  • Produce functional architecture and behavioural diagrams
  • Generate and maintain combined concept functional diagrams and engineering artefacts
  • Assess concepts and identify strengths, limitations, opportunities and dependencies
  • Support weapon capability assessments against emerging FCAS concepts
  • Produce concept artefacts and technical evidence for Statements of Work, reviews and milestones
  • Provide technical expertise at programme reviews and stakeholder working groups
  • Contribute to Agile sprint planning, reviews and retrospectives
  • Support project management using Agile toolsets and configuration-controlled environments
  • Produce technical status updates and monthly progress reports for programme leadership

Requirements

What you’ll need
  • Experience in systems engineering and concept development
  • Experience in operational analysis and problem solving
  • Experience with functional decomposition and systems modelling
  • Experience in capability assessment and trade-off analysis
  • Stakeholder engagement and technical communication skills
  • Ability to develop engineering artefacts, presentations and technical reports
  • Experience working within Agile project environments
  • Ability to work collaboratively across multiple engineering disciplines
  • Strong analytical and critical thinking skills
  • Ability to work within a Defence environment and support sensitive programmes
  • Strong written and verbal communication skills
  • Ability to engage effectively with technical leaders, programme teams and key stakeholders
  • Eligibility to obtain and maintain appropriate UK Security Clearance where required
  • FCAS programme experience, weapon systems and guided weapons knowledge, CONOPS development, MBSE awareness, defence architecture and capability modelling, military operational effects analysis, and systems-of-systems engineering are desired

Benefits

Comp & perks
  • Collaborative working environment
  • Opportunities to expand skills and participate in inspiring projects
  • Expleo Academy accredited training courses
  • Competitive company benefits
  • Inclusive and accessible recruitment process
  • Reasonable adjustments and additional support as needed
  • Equal opportunities employment