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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Java Developer - Data Fabric / Platform Engineering - **Company:** NextWave Consulting Ltd - **Location:** Greater London, UK - **Salary:** £70,000.0 - £90,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Apache HTTP Server, Software Quality, Continuous Integration, Data Governance, Data Infrastructure, Data Security, Data Structures, Distributed Data Store, Java Database Connectivity, Java Virtual Machine (JVM), Junit, Apache Maven, Modular Design, Performance Tuning, Mockito, SQL Databases, Backend, Microsoft Fabric, Data Management, Api Management, Docker, Jenkins, Crud, Microservices - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815188856-backend-java-developer--data-fabric--platform-engineering ## About the Role * Strong hands-on experience in Java (17/21) + Spring * Deep understanding of JDBC, SQL parsing/validation, query planning/optimization * Experience with SQL planners or query transformation layers * Strong grounding in data structures, algorithms, and backend performance * Production-grade testing using JUnit 5, Mockito * Experience with clean architecture, DI, modular design * Comfortable owning CI/CD, code quality, observability * Familiarity with Docker, Maven, Jenkins Nice to Have * Apache Calcite * Starburst or federated query engines * JVM performance tuning * High-throughput service interfaces (REST/gRPC) * Data governance or policy enforcement layers, * Data platforms, governance layers, query engines, or SQL planners * Backend/platform services that sit in the critical path of data access * Systems where correctness, determinism, and performance matter ## Description Backend Java Developer - Data Fabric / Platform Engineering Location: London (Hybrid) Employment: Permanent Salary: £70,000 - £90,000 base (dependent on experience) If your idea of backend engineering is more than CRUD APIs and microservices boilerplate - this role is for you. We're building the core backend services of a Data Fabric platform that governs data access, entitlements, and query policy enforcement across distributed enterprise data systems. This is platform engineering: deterministic rule engines, SQL planning/interception, and high-throughput services that sit on the critical path of data access. This is deep backend + data infrastructure work. ? What You'll Do * Build core backend services in Java (17/21) for access control and query manipulation * Implement deterministic policy / rule engines for data governance * Work on SQL parsing, planning, validation, and transformation (e.g., Calcite or similar planners) * Integrate with distributed data platforms / query engines (e.g., Starburst or similar) * Own API contracts with living documentation in CI/CD * Build production-grade, testable pipelines * Drive observability, reliability, and performance * Contribute to architecture decisions (modularity, DI, extensibility) What You Bring (Must-Have) * Strong hands-on experience in Java (17/21) + Spring * Deep understanding of JDBC, SQL parsing/validation, query planning/optimization * Experience with SQL planners or query transformation layers * Strong grounding in data structures, algorithms, and backend performance * Production-grade testing using JUnit 5, Mockito * Experience with clean architecture, DI, modular design * Comfortable owning CI/CD, code quality, observability * Familiarity with Docker, Maven, Jenkins Nice to Have * Apache Calcite * Starburst or federated query engines * JVM performance tuning * High-throughput service interfaces (REST/gRPC) * Data governance or policy enforcement layers ? This Role Is Ideal If You've Worked On * Data platforms, governance layers, query engines, or SQL planners * Backend/platform services that sit in the critical path of data access * Systems where correctness, determinism, and performance matter ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [Rest API Antipatterns](https://www.wearedevelopers.com/videos/100208-rest-api-antipatterns) - [Modern Data Architectures need Software Engineering](https://www.wearedevelopers.com/videos/1030-modern-data-architectures-need-software-engineering) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [From boy scouting to redrawing the landscape](https://www.wearedevelopers.com/videos/1140-from-boy-scouting-to-redrawing-the-landscape) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [20 Essential Tools For Backend Development](https://www.wearedevelopers.com/magazine/218-20-essential-tools-for-backend-development) - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story)