Real-Time Systems Software Engineer

Cirrus Selection; Stevenage; On-site; GBP 39,000 - 65,000; Full time

Benefits offered by this job

Bonus up to £2,500

14% pension

Flexi leave

Paid overtime

Job summary

Cirrus Selection is seeking a Real-Time Systems Software Engineer based in Stevenage. You’ll write C++ on Linux, building high-speed SFPDP data pipelines and multi-threaded architectures that feed into the validation of advanced defence systems.

Real hardware, real consequences. The small, hands-on team expects you to own problems, make decisions, and deliver tangible results in systems that are used in the field.

Qualifications

• Strong C++ and Linux experience in real-time data systems.
• Experience with multi-threaded architectures and concurrency.
• Eligibility for UK Security Clearance.

Responsibilities

• Develop real-time software for high-speed data pipelines.
• Collaborate with hardware and validation teams to ensure system integrity.

Skills

C++

Linux

Real-time data systems

Concurrent programming

Tools

SFPDP

Job description

Real-Time Systems Software EngineerBased in StevenageSalary up to £65kSome 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.