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Job Title: Contract Applications Developer – C++ / Qt
Location: Colchester
Rate: £50 to £65 per hour (indicative outside IR35)
Contract Length: 3–6 months
Working Arrangements: On‑site presence required, with some flexibility depending on project phase

An established technology business in Colchester is seeking an experienced Applications Developer to support a series of embedded, GUI‑driven software projects. This contract role sits within a multidisciplinary engineering team and focuses on delivering high‑quality application features, on‑screen display tools, and user‑facing interfaces using C++ and Qt, tightly integrated with embedded hardware.

This role has an indicative outside IR35 determination, meaning we can accept candidates who wish to operate through their own Personal Service Company (PSC).

You’ll work across C++, Python, and Qt to develop robust, intuitive, and performance‑critical applications that interact directly with embedded systems. The environment is fast‑paced and collaborative, with a strong emphasis on clean code, hardware awareness, and reliable system behaviour.

Key Responsibilities

Develop and enhance GUI and application‑level features using C++ and Qt for embedded platforms.
Build on‑screen display tools and front‑end components for hardware‑integrated applications.
Contribute to Python‑based tooling, automation, and integration scripts.
Collaborate with embedded engineers, product teams, and test to refine requirements and deliver high‑quality software.
Troubleshoot, debug, and optimise code for performance, memory usage, and hardware constraints.
Support the full development lifecycle from design through to deployment on embedded targets. About You

Strong commercial experience with C++ and Qt for GUI and application development.
Proven background working on embedded systems or hardware‑integrated applications.
Confident using Python for tooling, automation, or integration tasks.
Comfortable navigating low‑level constraints, hardware interfaces, and embedded development workflows.
Analytical, detail‑driven, and able to communicate effectively across engineering teams. Desirable

Experience with cross‑platform or resource‑constrained environments.
Familiarity with embedded Linux, device drivers, or hardware‑software integration. For more information, please contact Cathy Swain.
T: (phone number removed)
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