Lead Backend Software Developer (Contract) London, Outside IR35 £500-£600 per day This is an exciting opportunity to join a fast‑moving engineering function at a pivotal moment of technical uplift. They are investing heavily in strengthening their core platforms and commercial data systems, creating a strong mandate for senior engineers to step in, lead, and make an immediate impact. Company They are a growing digital gaming organisation operating across multiple markets, currently modernising their backend ecosystem. With distributed teams across the UK and Europe, they are building scalable platforms that support a variety of customer‑facing and internal products. Engineering quality, strong technical leadership, and delivery excellence are central to their transformation. Contractors join at a time when technical ownership is expanding in‑house, creating real scope to shape systems and standards. Backend Development Deliverables * Lead backend development across a complex CMS and core data systems * Own key architectural decisions and unblock teams through strong technical leadership * Enhance the NextGen CMS, working on logic driven functionality and system evolution * Expand and support the Master Data platform that underpins wider services * Mentor engineers and drive engineering best practice across the backend team * Accelerate delivery by improving patterns, processes, and overall code quality Commercial Data Manager Deliverables * Lead development within the Commercial Data Manager, delivering new functionality and scaling existing services * Take full ownership of the HubSpot ecosystem, replacing agency support and bringing it in‑house * Implement new fields, features and data flows for commercial stakeholders * Maintain and evolve integrations across multiple services and data systems * Partner with architecture and engineering leadership on system design and improvements * (Nice to have) Drive smooth, reliable operation of CDM and HubSpot through clear technical ownership Your Skills and Experience * Strong capability in Node.js, JavaScript and TypeScript within complex backend environments * Confident designing scalable systems and making architectural decisions * Effective collaborator with product, delivery and commercial teams * Experience working in integration‑heavy or data‑rich environments * Proven leadership mindset with the ability to mentor, influence and drive standards * Practical cloud experience, ideally AWS, with good awareness of DevOps concepts How to Apply If you are a senior backend contractor ready to take technical ownership and deliver meaningful impact, please apply with your CV. #J-18808-Ljbffr
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Harnham Search & Selection Recruitment Team
