Senior Software Engineer – Java, Contract

This is a fully remote position, open to applicants in United Kingdom.

📋 Description

• Design, develop, and maintain scalable and resilient backend services utilizing Java 17+ and Spring Boot.

• Create and enhance integrations between the iGaming platform and various operators, aggregators, and external partners.

• Design and implement REST APIs, asynchronous integrations, and event-driven services for high-volume, real-time gaming transactions.

• Develop and sustain platform capabilities related to player sessions, authentication, wallet transactions, game launches, betting, settlements, and transaction reconciliations.

• Collaborate effectively with Product, Architecture, Quality, Platform, and engineering teams.

• Translate external operator APIs and specifications into dependable integrations while identifying technical risks and dependencies.

• Diagnose and resolve intricate integration and production issues across distributed systems, APIs, messaging, databases, and external dependencies.

• Design for failure by incorporating timeouts, retries, idempotency, error handling, observability, and graceful degradation.

• Maintain automated unit, component, API, and integration test coverage.

• Develop automated API and integration tests using Playwright with TypeScript or similar frameworks.

• Contribute to CI/CD, deployment automation, monitoring, and observability efforts.

• Take ownership of software throughout its design, implementation, deployment, monitoring, and production support phases.

• Utilize AI-assisted engineering tools and methodologies.

• Continuously enhance code quality, engineering practices, developer experience, and system design.

⛳️ Requirements

• Candidates must operate through a fully registered limited company.

• Robust commercial software engineering experience with Java 17+ and Spring Boot or Quarkus.

• Strong grasp of backend and distributed system design, including scalability, resilience, concurrency, and high availability.

• Experience in designing and consuming RESTful APIs and integrating with third-party or external systems.

• Familiarity with event-driven architectures and messaging technologies such as Kafka, Pub/Sub, or RabbitMQ.

• Understanding of idempotency, retries, duplicate handling, eventual consistency, and failure recovery processes.

• Proficiency with relational and/or NoSQL databases, including diagnosing performance or data-related challenges.

• Practical experience with cloud platforms, preferably GCP, Docker, and Kubernetes.

• Knowledge of CI/CD pipelines, deployment processes, and production troubleshooting techniques.

• Experience in logging, metrics, tracing, alerting, and service-health monitoring.

• Extensive experience with unit, component, API, and integration testing.

• Experience with Playwright and TypeScript for API/integration test automation, or similar frameworks with the ability to adapt to Playwright.

• Understanding of testability, mocking/stubbing, contract testing, test data management, and test isolation.

• Familiarity with TDD, BDD, and pair programming methodologies.

• A shift-left quality mindset.

• Strong debugging and problem-solving skills across distributed systems and external integrations.

• Experience using AI-assisted development tools; reusable AI tooling, workflows, or agents are advantageous.

• Excellent communication, planning, and collaboration skills.

• Fluent in business English.

• Pragmatic and delivery-focused approach.

• iGaming experience is highly desirable, including online casino, sportsbook, or gambling technology.

• Experience integrating gaming platforms with operators, aggregators, wallet platforms, or third-party gaming providers.

• Understanding of iGaming integration flows such as authentication, game launch, wallet/balance, bet, win, rollback/cancellation, and reconciliation.

• Experience with real-money transactional systems.

• Awareness of regulatory, security, and operational considerations for real-money gaming platforms.

• Strong analytical and critical-thinking skills.

• Ownership mindset with the ability to take responsibility throughout production.

• Self-motivated and comfortable working independently.

• Adaptable and eager to learn.

• Comfortable collaborating with external partners and navigating ambiguity.

• Strong attention to detail.

🏝️ Benefits

• Fully remote work opportunity.

• 1-year extendable contract.

• Occasional travel to the headquarters in Málaga, Spain.