{"id":3603685,"url":"https://alion.io/job/4g-identity-solutions-java-engineer-middleware-integration","title":"Java Engineer - Middleware Integration","company":{"id":4490414,"name":"4G Identity Solutions","domain":"4gid.com","url":"https://alion.io/company/4g-identity-solutions","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Hyderabad, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Git","optional":false},{"name":"IAM","optional":false},{"name":"Java","optional":false},{"name":"Keycloak","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"Swagger","optional":false}],"status":"live","first_seen_at":"2026-11-02T10:35:10Z","employer_posted_date":null,"last_verified_at":"2026-11-02T10:35:10Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"Responsibilities: \nDesign secure shared backend services, API gateways, and system-to-system integrations for the personnel identity platform and other enterprise systems.\nDevelop and maintain secure REST APIs, backend modules, and integration services using the approved backend stack.\nOwn API contracts, schema validation, versioning, service authentication, rate limiting, and error conventions.\nImplement identity lifecycle, enrollment, adjudication, card issuance, and verification integrations as assigned.\nIntegrate biometric enrollment and ABIS-related systems through documented approved vendor interfaces.\nDevelop card personalization, GIS/GPS, mobile-backend, and enterprise integration APIs.\nImplement OAuth 2.0/OpenID Connect, RBAC, and IAM/Keycloak integration where specified.\nDesign transactional behavior, idempotency, retries, timeouts, asynchronous queues, and reconciliation.\nCreate auditable business events, tracing, structured logs, and secure handling of sensitive records.\nBuild database access and optimize queries with clear ownership of business transactions.\nPublish OpenAPI specifications, sequence diagrams, and interface test packs; support end-to-end integration.\nExpose governed services for centrally managed AI agents without delegating high-impact actions without approval.\nDesign, version, and test robust API specifications and maintain the integration test suite.\nBuild and optimize secure reference integrations that gracefully handle system failures and retries.\nArchitect system workflows through sequence diagrams and define strict transaction and audit logging standards.\nFacilitate technical knowledge transfers and document operational playbooks for exception handling.\n\nRequirements: \nBachelor's / master's degree or equivalent practical experience in computer science, IT, engineering, or a closely related discipline.\nStrong problem-solving, documentation, secure-development discipline, and collaboration with solution architecture, product, QA, and operations teams.\n4+ years of strong Java/Spring Boot (preferred project stack; final choice to be confirmed) or a proven equivalent enterprise backend stack.\nREST, JSON, OpenAPI/Swagger, and API contract design.\nSQL and PostgreSQL/MySQL, transactions, and query optimization.\nOAuth 2.0/OpenID Connect, JWT, RBAC, and TLS.\nAsynchronous messaging, retries, idempotency, and exception handling.\nGit, automated unit/integration testing, and secure coding.\nProduction-grade troubleshooting of multi-system integrations.\n\nPreferred / advantageous: \nKeycloak and API gateways.\nBiometric enrollment, ABIS, smart-card personalization, or secure identity systems.\nRabbitMQ/Kafka, distributed tracing, and high availability.\nDefence/government and restricted-network deployment experience.\nIntegration with approved AI orchestration services.\nSkills\nJSON, JWT, Java, Keycloak, OAuth, OpenAPI, RBAC, REST, Spring Boot, Swagger, TLS","description_format":"text","description_chars":2921,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Government","Network Security"],"lifecycle":[{"event":"open","at":"2026-11-02T10:35:10Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":2,"expected_fill_days":26,"reasons":["seen:2","win:early"],"computed_at":"2026-11-05T05:54:30Z"},"pay":null,"html_url":"https://alion.io/job/4g-identity-solutions-java-engineer-middleware-integration","json_url":"https://alion.io/job/4g-identity-solutions-java-engineer-middleware-integration.json","meta":{"generated_at":"2026-11-06T00:36:55Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":1007,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4490414},"rest":"https://alion.io/mcp/rest/get_company?id=4490414"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2F4g-identity-solutions-java-engineer-middleware-integration"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2F4g-identity-solutions-java-engineer-middleware-integration"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2F4g-identity-solutions-java-engineer-middleware-integration"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/4g-identity-solutions-java-engineer-middleware-integration\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2F4g-identity-solutions-java-engineer-middleware-integration"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3603685}},{"tool":"search_jobs","arguments":{"company":"4gid.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3603685},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}