{"id":1807120,"url":"https://alion.io/job/nextwave-backend-java-developer-data-fabric-platform-engineering","title":"Backend Java Developer – Data Fabric / Platform Engineering","company":{"id":2564510,"name":"Nextwave","domain":"nxwave.com","url":"https://alion.io/company/nxwave-com","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Freshteam","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":70000,"max":90000,"currency":"GBP","period":"year","gross":null,"usd_annual":119225},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Docker","optional":false},{"name":"Java","optional":false},{"name":"Jenkins","optional":false},{"name":"JUnit","optional":false},{"name":"Maven","optional":false},{"name":"Mockito","optional":false},{"name":"Platform Engineering","optional":false},{"name":"SQL","optional":false},{"name":"gRPC","optional":true},{"name":"Kotlin","optional":true},{"name":"Rest API","optional":true}],"status":"live","first_seen_at":"2026-10-03T19:28:48Z","employer_posted_date":"2026-10-03","last_verified_at":"2026-10-05T01:29:01Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Backend Java Developer - Data Fabric / Platform Engineering\nLocation: London (Hybrid)\nEmployment: Permanent\nSalary: £70,000 - £90,000 base (dependent on experience)\nIf your idea of backend engineering is more than CRUD APIs and microservices boilerplate - this role is for you.\nWe’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.\nThis is platform engineering: deterministic rule engines, SQL planning/interception, and high-throughput services that sit on the critical path of data access.\nThis is deep backend + data infrastructure work.\nWhat You’ll Do\nBuild core backend services in Java (17/21) for access control and query manipulation\nImplement deterministic policy / rule engines for data governance\nWork on SQL parsing, planning, validation, and transformation (e.g., Calcite or similar planners)\nIntegrate with distributed data platforms / query engines (e.g., Starburst or similar)\nOwn API contracts with living documentation in CI/CD\nBuild production-grade, testable pipelines\nDrive observability, reliability, and performance\nContribute to architecture decisions (modularity, DI, extensibility)\nWhat You Bring (Must-Have)\nStrong hands-on experience in Java (17/21) + Spring\nDeep understanding of JDBC, SQL parsing/validation, query planning/optimization\nExperience with SQL planners or query transformation layers\nStrong grounding in data structures, algorithms, and backend performance\nProduction-grade testing using JUnit 5, Mockito\nExperience with clean architecture, DI, modular design\nComfortable owning CI/CD, code quality, observability\nFamiliarity with Docker, Maven, Jenkins\n⭐ Nice to Have\nApache Calcite\n Starburst or federated query engines\nJVM performance tuning\nHigh-throughput service interfaces (REST/gRPC)\nData governance or policy enforcement layers\nThis Role Is Ideal If You’ve Worked On\nData platforms, governance layers, query engines, or SQL planners\nBackend/platform services that sit in the critical path of data access\nSystems where correctness, determinism, and performance matter","description_format":"text","description_chars":2144,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Data & Analytics","Financial Services","Professional Services"],"lifecycle":[{"event":"open","at":"2026-10-03T19:28:48Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":35,"reasons":["conf:0","win:early"],"computed_at":"2026-10-04T05:45:00Z"},"pay":{"stated_usd_annual":119225,"is_top_pay":false},"html_url":"https://alion.io/job/nextwave-backend-java-developer-data-fabric-platform-engineering","json_url":"https://alion.io/job/nextwave-backend-java-developer-data-fabric-platform-engineering.json","meta":{"generated_at":"2026-10-05T03:04:28Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"assistant","counted_by":"address","units_charged":1,"used_today":12,"day_limit":2000,"remaining_today":1988,"minute_limit":60,"resets_at":"2026-10-06T00:00:00Z"}}}