{"id":3794732,"url":"https://alion.io/job/digiworld-technologies-java-full-stack-developer","title":"Java Full-Stack Developer","company":{"id":4374045,"name":"Digiworld Technologies","domain":"digiworld.sg","url":"https://alion.io/company/digiworld-technologies","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":"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":3000,"max":6000,"currency":"SGD","period":"month","gross":true,"usd_annual":56292},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Tomcat","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Gradle","optional":false},{"name":"Hibernate","optional":false},{"name":"JavaScript","optional":false},{"name":"JQuery","optional":false},{"name":"JUnit","optional":false},{"name":"Maven","optional":false},{"name":"Mockito","optional":false},{"name":"MySQL","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Postman","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring MVC","optional":false},{"name":"Spring Security","optional":false},{"name":"Java","optional":true},{"name":"Kotlin","optional":true}],"status":"live","first_seen_at":"2026-11-05T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-11-05T00:00:00Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"We are looking for a Java Full-Stack Developer with 4–6 years of experience in developing and maintaining enterprise web applications across frontend and backend layers. The candidate should have hands-on experience with Java-based frontend technologies, Java backend development, REST APIs, database integration, and application testing.\nKey Responsibilities\nDevelop and maintain frontend and backend components of enterprise applications.\nBuild web interfaces using Java-based UI technologies such as JSP, JSF, Servlets, or equivalent frameworks.\nDevelop backend services and RESTful APIs using Java and Spring Boot.\nIntegrate frontend components with backend services and external systems.\nImplement business logic, validations, and transaction workflows.\nDevelop and maintain database queries and data access components using Hibernate / JPA.\nWrite unit and integration tests and participate in code reviews.\nTroubleshoot application defects and optimise application performance.\nFollow secure coding practices and enterprise development standards.\nCollaborate with business analysts, QA engineers, architects, and other developers.\nWork onsite at the client location and participate in project delivery activities.\nRequired Technical Skills\nFrontend\nJava-based web technologies: JSP, JSF, Servlets, or equivalent.\nHTML5, CSS3, JavaScript, and jQuery.\nMVC architecture and frontend/backend integration.\nREST API integration and JSON/XML handling.\nBackend\nJava 8 or above; Java 11/17 preferred.\nSpring Boot, Spring MVC, and Spring Security.\nRESTful API development and integration.\nMicroservices fundamentals.\nHibernate / JPA.\nDatabase& Tools\nSQL and relational databases such as Oracle, PostgreSQL, or MySQL.\nMaven or Gradle, Git.\nJUnit, Mockito, and Postman.\nFamiliarity with CI/CD pipelines and Agile / Scrum practices.\nExposure to application servers such as Tomcat, WebLogic, or JBoss.\nExperience & Qualifications\n4–6 years of hands-on full-stack development experience.\nExperience delivering enterprise Java web applications.\nBachelor’s degree in Computer Science, IT, or a related discipline, or equivalent experience.\nStrong analytical, problem-solving, and communication skills.\nSkills\nJSP, REST APIs development, application troubleshooting, Java Applications, Hibernate Framework, Information Technology, Backend Integrations, JSF, Computer Science, Servlets, JPA, Business Logic, Great communications skills, Software Integration Testing, Backend Development, web-based GUI","description_format":"text","description_chars":2488,"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":["Software Testing & QA"],"lifecycle":[{"event":"open","at":"2026-11-05T08:31:15Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":26,"reasons":["seen:1","velocity","win:early"],"computed_at":"2026-11-06T05:58:05Z"},"pay":{"stated_usd_annual":56292,"is_top_pay":false},"html_url":"https://alion.io/job/digiworld-technologies-java-full-stack-developer","json_url":"https://alion.io/job/digiworld-technologies-java-full-stack-developer.json","meta":{"generated_at":"2026-11-07T02:31:34Z","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":5870,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":4374045},"rest":"https://alion.io/mcp/rest/get_company?id=4374045"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdigiworld-technologies-java-full-stack-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%2Fdigiworld-technologies-java-full-stack-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%2Fdigiworld-technologies-java-full-stack-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/digiworld-technologies-java-full-stack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdigiworld-technologies-java-full-stack-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3794732}},{"tool":"search_jobs","arguments":{"company":"digiworld.sg","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3794732},"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); 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