System Engineer

Systems Engineer - Defence / MOD Programme

Location: Cheltenham (3-4 days onsite per week)
Duration: 12 months +
Start Date: ASAP
Hours: 37.5 per week
Hourly Rate: £100 Per hour Inside IR35
Are you a high-calibre System Engineer looking to support a major MOD defence programme, contributing to the design, integration, and assurance of complex, mission-critical systems that underpin national security.
This is a rare opportunity to work at the forefront of secure systems engineering in a highly regulated defence environment, where your expertise will directly influence the resilience, performance, and safety of next-generation systems.
You will join a collaborative, multidisciplinary engineering team operating at the intersection of systems engineering, digital transformation, and secure infrastructure delivery.

Key Responsibilities
System Design & Engineering

Design end-to-end system solutions aligned to functional, non-functional, and operational requirements
Develop and maintain system architectures, technical specifications, and interface control documentation
Support system build, configuration, integration, testing, and deployment activities across complex environments
Integration & Technical Assurance
Integrate systems across infrastructure, applications, networks, and secure services
Ensure compliance with security, resilience, and MOD-grade assurance standards
Identify, assess, and manage technical risks, dependencies, and system-level issues
Operations & Through-Life Support

Support systems through transition into live service and operational environments
Diagnose and resolve complex system performance and reliability issues
Provide technical input into change, incident, and problem management processe
Stakeholder & Delivery Collaboration

Translate operational and business requirements into robust technical solutions
Collaborate with architects, engineers, developers, delivery managers, and defence stakeholders
Communicate complex engineering concepts clearly across both technical and non-technical audiences

Essential Skills & Experience

Proven experience as a System Engineer (or similar systems-focused technical role)
Strong understanding of full system lifecycle delivery (requirements through to live operation)
Experience integrating systems in complex, multi-technology environments
Strong troubleshooting, analytical, and problem-solving capability
Excellent written and verbal communication skills
Desirable Skills & Experience

Experience with cloud, hybrid, or distributed system architectures
Exposure to secure, regulated, defence, or mission-critical environments
Knowledge of systems engineering, enterprise architecture, or service management frameworks
Experience working in Agile, DevOps, or iterative delivery environments
Qualifications

Degree (or equivalent experience) in Engineering, Computer Science, or a related discipline
Relevant systems engineering or technical certifications (desirable)
SFIA 4-5
Please note that this role requires an active UK Security Clearance.
If you are qualified and interested, please apply or email (url removed)
Only candidates based in UK and eligible to work in UK are allowed