Backend Developer Consultant

Come and push your journey to the next level! 

A taste of what you’ll do 
The Middle Backend Developer builds and maintains the backend services that integrate third-party game providers into the platform. The role covers the technical lifecycle of an integration — from provider specification through implementation to production support — and owns the reliability of the services handling game launches, bet and win transactions and provider callbacks. It suits a developer comfortable working against external specifications and third-party systems they don't control. 

• Implement and maintain integrations with third-party game providers in PHP/Laravel, working from provider API specifications and integration documents  

• Handle game transaction flows — launch, bet, win, rollback, reconciliation  

• Design and optimise database schemas and queries in database 

• Investigate and resolve integration issues with providers, including direct technical liaison with their engineering contacts  

• Investigate and resolve production incidents affecting game availability or player transactions, including participation in the on-call rota  

• Write and maintain automated tests, including coverage of provider edge cases and failure modes  

• Participate in code review, sprint planning, refinement and retrospectives  

• Keep integration documentation current, including provider-specific behaviour and known quirks  

• Apply secure development practices and comply with regulatory, licensing and data protection requirements  

• Support and mentor junior developers on the team  

• Any other task/responsibility which may be related and/or connected to your role as Middle Backend Developer 

Who and what we are after? 
 

• Minimum 3 years' commercial PHP development experience 

• Basic working knowledge of Python 

• Strong Laravel experience, including Eloquent, queues, service container and Artisan tooling  

• Comfortable working in an older procedural PHP codebase alongside modern framework code, and migrating between the two 

• Practical experience integrating third-party REST APIs, including handling authentication, retries, timeouts and inconsistent provider behaviour  

• Competent with relational databases: schema design, indexing, query optimisation  

• Understanding of transactional integrity, concurrency and idempotency in financial or wallet-style operations  

• Experience with RabbitMQ or a comparable message broker — consumers, queue configuration, handling stuck or piling messages  

• Redis for caching and pub/sub 

• Experience with Git, branching workflows and CI/CD pipelines  

• Automated testing with PHPUnit; familiarity with static analysis and style tooling (PHPStan, PHPMD, Laravel Pint)  

• Docker, and basic familiarity with Kubernetes for local development 

• Able to debug production issues across service boundaries and identify whether a fault is ours or the provider's  

• Clear written and spoken English, sufficient for direct correspondence with external provider teams  

• Able to work independently on assigned scope while escalating blockers early  

• Degree in Computer Science, Software Engineering or equivalent practical experience 

Meet all the eligible criteria? Apply today and join the Immense Group team. 

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