> Markdown version of [/jobs/ext/1461867-c-developer](https://www.wearedevelopers.com/jobs/ext/1461867-c-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # C++ Developer - **Company:** Addition Solutions Ltd - **Location:** London, UK (Remote available) - **Experience:** Expert - **Contract:** Temporary contract - **Skills:** Microsoft Windows, Artificial Intelligence, Amazon Web Services, Unit Testing, C++ (Programming Language), CMake, Software Debugging, Linux, Memory Management, Python (Programming Language), Linux System Administration, Networking Basics, Performance Tuning, Memory Leaks, Transmission Control Protocol (TCP), Multithreading, Scripting, Large Language Models, Concurrency, Git, Low Latency, Build Tools, Code Restructuring - **Published:** July 28, 2026 - **Apply:** https://www.reed.co.uk/jobs/c-developer/57169799 ## About the Role * Expert-level modern C++ development with recent, hands-on commercial experience. * Proven commercial experience developing across both Windows and Linux environments is essential. * Demonstrable experience modernising, upgrading and maintaining large, legacy C++ platforms. * Strong understanding of multithreading, concurrency, memory management and performance optimisation. * Server-side development experience with solid networking fundamentals, including TCP. * Strong unit testing practices and experience working with CI/CD pipelines. * Experience with build tools such as CMake, Git and automated testing frameworks such as GoogleTest or Catch2. * Strong debugging skills using tools such as gdb, Valgrind or sanitizers. * Exposure to AWS services, networking or containerisation is highly desirable. * Previous experience within iGaming or online gambling is highly preferred. Candidates from other low-latency, real-time environments such as trading or financial services will also be considered. * Experience using AI-assisted development tools-particularly Claude or similar LLM-powered coding assistants-will be heavily favoured. * Python or scripting experience for automation is beneficial. * Able to work independently, onboard quickly and communicate technical decisions clearly with both technical and non-technical stakeholders. ## Description * Develop high-quality C++ within a large, established production codebase. * Play a key role in migrating core platform capabilities from Windows to Linux as part of a wider modernisation programme. * Refactor and modernise legacy components while maintaining stability and existing functionality. * Build and enhance high-performance, low-latency, server-side systems supporting a live platform. * Integrate platform services with AWS where required as part of the wider cloud programme. * Use AI-assisted development tools, including Claude, to improve productivity while maintaining engineering quality. * Collaborate closely with engineering teams, cloud specialists and stakeholders to deliver technical solutions and communicate progress effectively. * Identify technical risks early and contribute to pragmatic, incremental improvements across the platform., * Help modernise a large C++ platform while contributing to a significant Windows-to-Linux migration. * Collaborate with experienced engineering teams and AWS cloud specialists. * Gain exposure to AI-assisted software development practices using Claude. * Flexible remote/hybrid working within the UK. * Long-term contract opportunity working on highly technical, performance-critical systems. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Code to Road in < 12 hours](https://www.wearedevelopers.com/videos/1082-code-to-road-in-12-hours) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [WeAreDevelopers LIVE – AI, Freelancing, Keeping Up with Tech and More](https://www.wearedevelopers.com/videos/1786-wearedevelopers-live-ai-freelancing-keeping-up-with-tech-and-more) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [The weekly developer show: Boosting Python with CUDA, CSS Updates & Navigating New Tech Stacks](https://www.wearedevelopers.com/videos/1293-the-weekly-developer-show-boosting-python-with-cuda-css-updates-navigating-new-tech-stacks) ## Related Articles - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)