{"id":2421434,"url":"https://alion.io/job/antas-senior-java-developer","title":"Senior Java Developer","company":{"id":4336773,"name":"Antas","domain":"antas.rs","url":"https://alion.io/company/antas","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":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":9500,"max":10500,"currency":"SGD","period":"month","gross":true,"usd_annual":98400},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"FastAPI","optional":false},{"name":"Git","optional":false},{"name":"Gradle","optional":false},{"name":"Java","optional":false},{"name":"JUnit","optional":false},{"name":"Maven","optional":false},{"name":"Mockito","optional":false},{"name":"Scrum","optional":false},{"name":"SOAP","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Framework","optional":false},{"name":"Kotlin","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-10-13T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-10-13T00:00:00Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"Job Summary\nDesign, develop, and maintain enterprise-grade Java web applications and distributed systems. Lead scalable microservices and API implementations while collaborating across teams to deliver secure, maintainable software solutions throughout the full SDLC.\nResponsibilities\nDesign, develop, and maintain enterprise-grade web applications and distributed systems using Java, Spring Framework, and Spring Boot to meet business needs\nArchitect and implement scalable microservices, RESTful APIs, and SOAP web services for seamless enterprise application integration\nDevelop backend business logic applying Core Java, object-oriented programming, Java Collections Framework, concurrency, and exception handling to ensure robust functionality\nAnalyze technical specifications and translate business requirements into secure, scalable, and maintainable software solutions\nCollaborate with software architects, business analysts, and engineering teams on system design, technical solutions, and full software development life cycle (SDLC) activities\nConduct code reviews, design reviews, and pair programming sessions to enforce coding standards, design patterns, and software engineering best practices\nPerform application profiling, debugging, performance tuning, and root cause analysis to resolve complex technical issues efficiently\nImplement automated unit and integration testing and maintain code quality using established testing and code review practices\nManage application deployment, release validation, and post-production support across development, testing, and production environments\nMentor junior developers and contribute to technical documentation, continuous improvement, and development standards\nRequired competencies and certifications\nStrong hands-on expertise in Java, Core Java, object-oriented programming, Collections Framework, multithreading, and concurrency\nExtensive experience with Spring Framework, Spring Boot, microservices architecture, RESTful APIs, and SOAP web services\nStrong knowledge of design patterns, SOLID principles, secure coding practices, and distributed application design\nExperience in API integration, JSON/XML processing, exception handling, and application performance optimization\nProficiency in Git, Maven or Gradle, automated testing, and software build and release processes\nExperience with unit testing frameworks such as JUnit and Mockito, and familiarity with CI/CD tools such as Jenkins\nStrong understanding of Agile/Scrum methodologies, SDLC, code review practices, application deployment, and production troubleshooting\nExcellent analytical, problem-solving, technical documentation, and cross-functional collaboration skills\nPreferred competencies and qualifications\nMinimum Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related discipline\nMinimum 10 years of relevant experience in Java application development, including enterprise application design and implementation\nSkills\nObject-Oriented Programming, Writing Technical Specifications, Code Quality, Git, Design, RESTful API, Scalability, Design Patterns, Spring Framework, Root Cause Analysis, Spring Boot, Microservices Design, Business Logic, Performance Tuning, enforces coding standards, Liaising With Architects, Debugging, API, FastAPI","description_format":"text","description_chars":3314,"description_truncated":false,"requirements":{"experience_years_min":10,"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":[],"lifecycle":[{"event":"open","at":"2026-10-13T04:28:00Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":23,"reasons":["seen:2","velocity","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":{"stated_usd_annual":98400,"is_top_pay":false},"html_url":"https://alion.io/job/antas-senior-java-developer","json_url":"https://alion.io/job/antas-senior-java-developer.json","meta":{"generated_at":"2026-10-16T03:12:12Z","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":4836,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"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":4336773},"rest":"https://alion.io/mcp/rest/get_company?id=4336773"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fantas-senior-java-developer"},{"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%2Fantas-senior-java-developer"},{"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%2Fantas-senior-java-developer"},{"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/antas-senior-java-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fantas-senior-java-developer"}]}