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You will work on a mature product used by a large global customer base, helping deliver new functionality, improve performance, troubleshoot complex issues, and maintain high quality standards across the application stack.\nThe project focuses on building enterprise grade solutions that provide advanced reporting, data visualization, and analytics capabilities integrated with widely used collaboration and work management platforms. The product serves a large global user base and continues to evolve with new features aimed at improving productivity, decision making, and user experience.\nDevelop and maintain backend functionality using Java, Spring, and REST APIs\nEnhance and support frontend applications built with React and TypeScript\nWork with relational databases to implement features, troubleshoot data issues, and optimize query performance\nInvestigate and resolve complex production issues by identifying root causes and implementing long term solutions\nCollaborate with product, support, and engineering teams to deliver new functionality and product improvements\nMaintain and extend existing framework based codebases while ensuring stability, performance, and maintainability\nCreate and maintain automated tests to support product quality and reliability\nParticipate in code reviews and contribute to engineering best practices\nSupport CI/CD processes and contribute to code quality and security initiatives\nPrepare and maintain technical documentation related to features and system behavior\n3+ years of relevant full stack work experience\nSolid backend experience with Java and the Spring ecosystem, including dependency injection and REST controllers; comfortable reading and safely modifying an existing framework based codebase rather than working only on greenfield projects\nGood command of relational databases and SQL, with the ability to troubleshoot data correctness and query performance issues; experience with multiple database vendors such as PostgreSQL, MySQL, Oracle, and Microsoft SQL Server is a plus\nPractical experience maintaining production UIs with React (Hooks and component composition) and TypeScript in a strongly typed codebase\nFamiliarity with state management solutions such as Redux, Redux Toolkit, MobX, or similar technologies and modern frontend build tools such as Vite or Webpack\nGood understanding of object oriented programming principles, common design patterns, and automated testing\nHighly analytical, with a genuine passion for debugging. 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You will work with international colleagues and handle customer and support requests both in writing and during meetings\nExperience developing or maintaining Atlassian Data Center applications (P2 Plugins, Atlassian Plugin SDK, Spring Scanner, Marketplace applications), or a strong willingness to learn the platform\nExperience supporting a customer facing product and working directly with customer and support requests\nFamiliarity with BI and analytics tools or the OData protocol\nExperience with performance profiling and optimization of large datasets\nAwareness of secure coding practices, including input validation, injection prevention, SSRF mitigation, dependency management, and CVE remediation\nAwareness of Atlassian Cloud and cloud migration paths, for example JCMA, for Data Center applications","description_format":"text","description_chars":3804,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"},{"name":"Serbia","iso":"RS","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-29T12:30:09Z"}],"visa":[],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":1,"p_active":0.39,"p_room":0.28,"age_days":62,"expected_fill_days":27,"reasons":["conf:12","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/dataart-full-stack-developer-with-java-and-react-analytics-hub","json_url":"https://alion.io/job/dataart-full-stack-developer-with-java-and-react-analytics-hub.json","meta":{"generated_at":"2026-11-02T19:10:05Z","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":26836,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":46984},"rest":"https://alion.io/mcp/rest/get_company?id=46984"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdataart-full-stack-developer-with-java-and-react-analytics-hub"},{"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%2Fdataart-full-stack-developer-with-java-and-react-analytics-hub"},{"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%2Fdataart-full-stack-developer-with-java-and-react-analytics-hub"},{"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/dataart-full-stack-developer-with-java-and-react-analytics-hub\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdataart-full-stack-developer-with-java-and-react-analytics-hub"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3453392}},{"tool":"search_jobs","arguments":{"company":"dataart.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3453392},"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. 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