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 / L aravel , 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. Please take the time to read our Candidate Privacy Policy – Immense prior to clicking ‘apply’.