Test Engineer - Hardware in the Loop

Cirrus Selection; Stevenage; On-site; GBP 41,000 - 51,000; Full time

Benefits offered by this job

Company bonus

Pension contributions

Flexi leave days

Enhanced parental leave

Job summary

Cirrus Selection in Stevenage is seeking a Test Engineer to join a Hardware-in-the-Loop testing team, conducting live, real-time missile simulations with real hardware and dedicated test rigs.

You will develop and refine real-time software simulations, run hands-on tests with real hardware, and analyse telemetry to inform design decisions, collaborating with missile product experts to drive validation and improvements.

Qualifications

• Solid grounding in systems integration and interface debugging.
• A structured, methodical approach to problem-solving.
• Experience with real-time software or simulation design

Responsibilities

• Understand how missile sub-systems behave under dynamic HIL testing.
• Determine how sub-systems interact with bespoke test equipment.
• Develop and refine real-time software simulations from performance models.
• Run hands-on testing with real missile hardware and software.
• Analyse telemetry data and turn it into technical reports for design decisions.
• Work with subject matter experts across missile product teams

Skills

Real-time software

Systems integration

Interface debugging

Structured problem solving

Job description

Test Engineer, Hardware in the Loop

Based in Stevenage | Predominantly on-site

Salary up to £46,000

If you like the idea of testing hardware inside a live, real-time simulation, not a spreadsheet model, this is worth five minutes of your time.

You'd join a Hardware-in-the-Loop (HIL) test team, running dynamic missile-firing simulations using real missile hardware, flight motion tables, and RF and IR target generation systems. It's one of the few facilities of its kind in the UK. The simulations run in real time, the hardware is real, and the results feed directly into product development, performance validation, and firing trials.

What you'd actually be doing:

• Understanding how missile sub-systems behave under dynamic HIL testing
• Working out how those sub-systems interact with bespoke test equipment
• Developing and refining real-time software simulations from performance models
• Running hands-on testing with real missile hardware and software
• Analysing telemetry data and turning it into technical reports that inform design decisions
• Working directly with subject matter experts across missile product teams

What you'll need (essential):

• Solid grounding in systems integration and interface debugging
• A structured, methodical approach to problem-solving
• Experience with real-time software or simulation design

What'll make you stand out (desirable, not essential):

• Experience testing sensors or sub-systems
• Exposure to Radio Frequency or Infrared seeker systems
• Experience with system performance analysis

You don't need to tick every box. If you've got the essentials and one or two of the desirables, you're worth a conversation.

This sits alongside a solid package, up to £2,500 company bonus, pension contributions up to 14%, up to 15 additional flexi leave days, and enhanced parental leave. Happy to talk through the detail when we speak.

You'll need to be a British citizen or dual UK national with British citizenship, as this role requires security clearance after offer.