Haystack
← Back to Jobs
Temporary/Casual
Technology
CACertain Advantage logo

C++ (with QT) Software Engineer

Certain AdvantageFilton, Bristol🇬🇧United KingdomPosted 5 Oct 2026

Why This Role Stands Out

This C++ Software Engineer role offers an exciting opportunity to rebuild a critical console product for next-generation air defense systems, promising significant impact and long-term potential within a world-class defense organization. You'll thrive here if you're a mid-senior engineer with C++ and QT expertise, ready to contribute independently while benefiting from team support in a four-day work week arrangement with a competitive hourly rate. Apply now to leverage your skills on a project with a very high likelihood of extension and ongoing work.

Quick Overview

Salary
£65/hr
Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
On Site
Location
Filton, Bristol, United Kingdom
Posted
2 weeks ago
C++

Job Description

World Class Defence Organisation based in Bristol is currently looking to recruit a C++ Software Engineer (with QT) subcontractor on an initial 12 month contract, with very likely extension. The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday).
Rate: £65.00 per hour
Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter'
Location: Bristol
Hybrid / Remote working: The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday).
Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.
IR35 status: Inside IR35 (Umbrella)
Interview process: One stage video interview
Job Description:

Overview of department:

Our team, at our Bristol facility, develop solutions for the next generation of Air Defence Systems; developing evolving products whilst maintaining our enviable reputation for safety, performance and dependability.

Responsibilities:

To produce a software Console product, replacing an existing version with better software architecture making the product more maintainable and verifiable going forward. This is not an up-date, but a remake – this is estimated to a minimum of 12 month's work. The task is primarily an independent solo task, but based within a team for support/input and to ensure that the resulting product operates within the intended system.

Skillset/experience required:

  • A strong background in software engineering, its realisation and system wide impact.
  • Experience of working in C++ and QT
  • Collaborative, open approach to application development and have the ability to maintain momentum during development.
  • Experience of working across the entire software development process from engaging with requirement authorities to automated proving, supported with effective documentation
  • Experience of new tools, techniques and approaches that might enable us to evolve our processes to improve our efficiency and sustainability
  • Experience in other languages such as Ada, QT
  • Knowledge of DDS and multi-threaded applications.
  • Knowledge of standards such as DefStan 00-55, DO-178C or IEC61508 and restricted coding standards such as MISRA C++

Similar jobs