Real-Time Systems Software Engineer

Cirrus Selection
Sg12Da, SG1 2DA, United Kingdom
3 weeks ago
£55,000 – £65,000 pa
Applications closed

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Palo Alto Networks London, United Kingdom

Salary

£55,000 – £65,000 pa

Job Type
Permanent
Work Pattern
Full-time
Work Location
On-site
Seniority
Mid
Education
Degree
Security Clearance
Required
Posted
19 May 2026 (3 weeks ago)

Benefits

Up to £2,500 bonus 14% pension Flexi leave Paid overtime

Real-Time Systems Software Engineer

Based in Stevenage

Salary up to £65k

Some software engineering roles are comfortable. Familiar stack, predictable problems, another sprint planning meeting.

This isn't one of those.

You'll be writing C++ on Linux, working with high-speed SFPDP data pipelines and multi-threaded architectures that feed directly into the validation of some of the most advanced defence systems in the world. Real hardware. Real consequences. The kind of work that actually matters.

The team is small and experienced. No passengers. You'll own problems, make decisions, and see the results of your work in systems that get used.

What the role needs from you is straightforward: solid C++ and Linux, genuine experience with real-time data systems and concurrent programming, and the instinct to go deep when something isn't working. SFPDP experience is a bonus, not a dealbreaker.

You'll need to be eligible for UK Security Clearance and comfortable being based full-time on-site in Stevenage. The package includes: up to £2,500 bonus, 14% pension, flexi leave, and paid overtime.

If you've been building real-time systems and you want the work to mean something, this is worth a conversation.

Industry Insights

Discover insightful articles, industry insights, expert tips, and curated resources.

Where to Advertise Cyber Security Jobs in the UK (2026 Guide)

Where to advertise cyber security jobs UK in 2026: the specialist boards, communities and channels that reach offensive, defensive and GRC security talent. The candidate pool is small, heavily vetted and in high demand across government, financial services, critical national infrastructure and the private sector simultaneously. Many of the strongest candidates hold active security clearances, are not actively job-searching through general platforms, and move primarily through specialist networks and trusted referrals. General job boards reach a broad audience but lack the specificity that security professionals expect. Specialist platforms, government-affiliated channels and cleared candidate networks each serve a different part of the market. This guide, published by CybersecurityJobs.tech, covers where to advertise cyber security roles in the UK in 2026, how the main platforms compare, what employers should expect to pay, and what the data says about hiring across different role types.