Job title: Contract Systems Engineer Location: Bristol - 3 days in office Tues, Wed & Thurs Salary: £550-£650 per day Outside IR35 Job type: 6-9 months contract iO Associates needs a Systems Engineer to work with a fast-growing UK engineering firm delivering mission-critical, edge-deployed systems for defence, security, and emergency services. They specialise in modular hardware, rapid software integration, and AI-enabled solutions designed for harsh, connectivity-denied environments.

What you'll do: Own requirements and architecture (DOORS, design reviews) Build scripts/tools (Python, GIS apps) Configure IP systems, assess tech (make/buy/modify) Deliver solutions rapidly - from concept to build Stay market-aware on AI and the latest defence tech What we're after: Defence background - land / C4I / dismounted experience ideal (BATCIS, LeTaccys) Strong systems fundamentals + hands-on engineering Comfortable with short V-cycles and documentation BPSS clearance or the ability to obtain

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