Technical Lead Developer (Unreal / Unity Cross-Platform Architect) Location: London, UK (Hybrid: 3 days a week in Farringdon / Remote flexibility) Job Type: Full-time, Permanent (Flexible working options available) BFB Labs provides digital therapeutics for better youth mental health and is revolutionising the way children access and engage with therapeutic support. Our products fuse evidence-based therapeutic approaches with immersive and responsible gaming, making them highly engaging, scientifically robust, and cost-effective. We build evidence-based health tech that meets the highest clinical standards, fundamentally improving the lives of young people and families. As a multi-award-winning, female-led, early-stage enterprise, we offer a driven, go-getting culture where you will play a foundational role in growing our team and scaling our impact. You will spend roughly 50% of your time writing and optimising high-performance code for our flagship Unreal Engine application, and 50% managing system design, conducting code reviews, and mentoring our ambitious mid-level development team. If you are an exceptional C++ developer looking to step up into management, define engineering culture, and own cross-platform architecture, this is your next role. Therapeutic Apps: Unreal Engine / C++ and Unity / C# Data Platform & Hub: Python / AWS / React Native/RestAPIs Lead & Architect: Own the technical roadmap and architectural integrity across our therapeutic games and data platform. Ensure data security, clinical compliance, and cloud stability. Drive core feature development and performance optimisations across our flagship therapeutic products. Code Quality & Governance: Set code styling, documentation, and testing frameworks to elevate our mid-level developers across Unreal/C++, Unity/C#, and Python environments. Product Release Operations: Oversee app store deployment pipelines, compliance requirements, and build distribution. An Unreal Expert: You have deep, hands-on experience building, debugging, and optimising complex applications or games using Unreal Engine and C++. While C++ is your native language, you have the flexibility to jump into Unity (C#) codebases to provide structural logic reviews and guide our game developer. A Natural Mentor: You genuinely enjoy unlocking the potential of mid-level engineers. Systems Thinker: You understand the fundamentals of data flow, APIs, and cloud architecture (Python/AWS). You care about how an app talks to a database just as much as how it renders on screen. Outcome-Driven: You prioritise building reliable, stable software that serves vulnerable users over endlessly over-engineering complex code. Purpose-Driven Work: The code you write and oversee will directly support young people going through clinical mental health pathways. Great Perks: 28 days of annual leave (plus bank holidays)—which grows by 1 extra day for every year you're with us (up to 5 additional days). You'll also get access to the company pension scheme, the flexibility to work remotely for up to one week twice a year (taken as separate sessions), and we usually top it off with an extra 3 discretionary days off over the Christmas period so you can fully recharge. Hybrid Flexibility: Work from our fantastic co-working space in Farringdon (Central London) 3 days a week, with the remainder remote. How to Apply We are looking for the right person to start ASAP . A final interview held at our Farringdon office space.
