Software Engineer - C/C++

Fynity Limited; Stevenage; Hybrid; GBP 50,000 - 75,000; Full time

Benefits offered by this job

Company bonus up to £2,500

Pension contributions up to 14%

Paid overtime opportunities

Flexi-leave days

Parental leave

On-site facilities

Job summary

Fynity Limited in Stevenage is seeking a Software Engineer to join a collaborative engineering team delivering advanced test and validation software for complex systems. You will design and develop software in C/C++, work with hardware, and contribute to automation, CI/CD and DevOps practices while benefiting from a hybrid on-site/remote balance.

Design and develop software for test equipment, debug and validate with real hardware, and collaborate with electronics and systems teams across the

Qualifications

• Proficient in C/C++ development for test equipment or hardware-integrated software.
• Experience delivering software in Agile environments.
• Familiar with CI/CD and DevOps practices.
• Understanding of software quality practices and standards.
• Experience with lab equipment such as oscilloscopes or spectrum analysers is advantageous.

Responsibilities

• Design and develop software for test equipment used on complex systems and sub-components.
• Write high-quality C/C++ software (some scripting).
• Collaborate with electronics, systems and test teams for integrated solutions.
• Support automation, CI/CD and DevOps practices.
• Contribute to robust, reliable and maintainable software.
• Debug and validate systems using real hardware and measurement equipment.

Skills

C/C++

Agile

CI/CD

DevOps

Lab equipment

Tools

Oscilloscopes

Job description

Salary £50,000 – £75,000 + bonus & excellent benefits

Stevenage | Hybrid working (3–5 days on-site)

This role requires eligibility for SC clearance – British citizenship is essential

Are you a Engineer looking to work on complex, real-world systems where reliability and performance truly matter?

We’re looking for a Software Engineer to join a highly collaborative engineering team delivering advanced test and validation software for cutting-edge systems. This is an opportunity to work across the full product lifecycle, developing solutions that directly support the testing and assurance of highly complex technology.

What you’ll be doing:

• Designing and developing software for test equipment used on complex systems and sub-components
• Writing high-quality software in C / C++ (with some scripting where needed)
• Working closely with electronics, systems and test teams to deliver integrated solutions
• Supporting automation, continuous integration and DevOps practices
• Contributing to the development of robust, reliable and maintainable software
• Debugging and validating systems using real hardware and measurement equipment

What we’re looking for:

• Strong experience developing software in C or C++
• Background in developing test solutions or working with hardware-integrated software
• Experience working in Agile development environments
• Good understanding of software quality practices and standards
• Familiarity with CI/CD, automation and DevOps principles
• Experience working with lab equipment such as oscilloscopes or spectrum analysers is highly beneficial

Why apply?

• Work on complex, mission-critical systems across the full development lifecycle
• Be part of a collaborative, engineering-led environment
• Opportunity to work with advanced technologies and modern development practices
• Clear progression opportunities within a growing team

What’s on offer:

• Salary between £50,000 - £75,000 depending on experience
• Company bonus (up to £2,500)
• Pension contributions up to 14%
• Paid overtime opportunities
• Up to 15 additional flexi-leave days
• Enhanced parental leave
• Excellent on-site facilities including subsidised meals and free parking