Lead Back-End Software Developer

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. The 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.The Role and 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.The Role and 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.