Job Description
hackajob is collaborating with Tombola to connect them with exceptional professionals for this role.
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The opportunity
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We're looking for a Senior Developer/engineer who's genuinely ready for a senior role — someone who can own the full software lifecycle, shape technical direction, and raise the bar for the team around them.
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This isn't a stepping stone. It's a role where your experience and instincts will matter from day one. You'll be working on platform systems that power one of the UK's biggest gaming sites — everything built in-house, with real complexity and real stakes.
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You'll be expected to drive quality, influence architecture decisions, and be a technical reference point for your peers. But you'll also be coding — we're not looking for someone who's stepped too far from the work. The best senior developers here do both.
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What you'll be doing
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• Owning the full software delivery lifecycle — from requirements through to production
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• Designing and delivering robust, scalable solutions in C# across tombola's platform
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• Driving engineering standards — code quality, testing practices, documentation
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• Influencing technical direction and contributing to architectural decisions
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• Mentoring and coaching developers at all levels
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• Leading code reviews and pair programming sessions
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• Working closely with stakeholders and non-technical colleagues to shape requirements
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• Monitoring application health and leading performance investigations
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• Contributing to agile ceremonies — standups, sprint planning, technical refinements
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• Ensuring compliance and regulatory considerations are built into delivery
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What we're looking for
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• Proven, senior-level C# skills — we're looking for someone exceptional here
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• Strong knowledge of the .NET ecosystem — both legacy frameworks and modern .NET
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• Experience owning work end-to-end, from requirements through to live systems
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• Deep understanding of testing methodologies — unit, integration, and beyond
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• Ability to design software to a high technical standard, collaboratively
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• Experience mentoring others and influencing team direction
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• Excellent communication across technical and non-technical audiences
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• Understanding of compliance, regulations, and how they affect software delivery
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Nice to haves
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• SQL and data layer experience
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• Experience working across both backend and frontend codebases
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• Involvement in hiring and technical interviewing
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Why tombola? ❤️
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At tombola, senior developers have genuine influence. Technology decisions are never handed down from above — they're made by the people closest to the work. You'll have real autonomy, real ownership, and the chance to help shape how we build for years to come.
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We're a business that's genuinely driven by technology. Every product, every system, every feature — built in-house. That means your work has real impact, and the team you'll join knows and cares about that.
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We've also got great benefits. Head to our careers site to see the full picture.
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At tombola we know that our differences make us stronger and that thinking differently is key to long-term success. We work hard to create a culture of inclusivity where everyone is free to be themselves. We welcome applications from all backgrounds.
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