Harnham
Lead Back-End Software Developer
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Lead Backend Software Developer (Contract)
Location: London, Outside IR35
Rate: £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.
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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.
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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.
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