{"id":1145691,"url":"https://alion.io/job/optiveum-senior-frontend-react-developer","title":"Senior Frontend (React) Developer","company":{"id":685848,"name":"Optiveum","domain":"optiveum.com","url":"https://alion.io/company/optiveum","size_band":null,"is_staffing_agency":true,"is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":null,"max":130,"currency":"PLN","period":"hour","gross":false,"usd_annual":68000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Material UI","optional":false},{"name":"React Query","optional":false},{"name":"React.js","optional":false},{"name":"Tailwind CSS","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"Jenkins","optional":true}],"status":"live","first_seen_at":"2026-09-21T09:51:51Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-09-23T18:53:49Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Senior Frontend (React) Developer\nRate: up to 130 PLN/h net + VAT (B2B)\n\nWork Model: Hybrid (3 days per week from the office)\n\nLocation: Warsaw, Poland\n\nEngagement: Full-time (40 hours/week)\n\nAbout the Role:\nWe are Optiveum - your recruitment and contracting partner. We are currently looking for a Senior React Developer to join the team of our client, a renowned organization operating in the financial and investment sector. In this role, you will work alongside the current Frontend Developer on the development, maintenance, and support of an Investment Fund Orders’ processing administration UI application.\nPlease note: Optiveum is the recruitment and contracting party for this role. You will be signing the cooperation agreement directly with us.\nResponsibilities:\nContributing to the ongoing development of the redesigned UI application using modern technologies and implementing new business requirements.\n\nSupporting the preparation, stabilization, and production rollout of upcoming releases.\n\nProviding application support, troubleshooting, and bug fixing for existing and newly delivered functionalities.\n\nTaking over day-to-day UI support responsibilities to ensure continuity of operations.\n\nImproving and maintaining code quality, including the remediation of identified vulnerabilities and framework dependencies.\n\nCollaborating closely with Backend Developers, Business Analysts, Test Engineers, and end-users to clarify requirements, investigate issues, and deliver solutions.\n\nParticipating in Agile team activities, including backlog refinement, sprint planning, reviews, and production support.\n\nMust-have skills:\nReact.js (v18 or higher)\n\nReact Query\n\nTypeScript\n\nReact Testing Library\n\nMaterial UI\n\nTailwind\n\nReact Form\n\nHook-oriented programming\n\nStrong communication skills\n\nNice-to-have skills:\nBasics of Java and SpringBoot\n\nOther TanStack libraries\n\nJenkins\n\nGeneral JavaScript proficiency\n\nWhat we offer:\nTransparent cooperation- Optiveum will be your dedicated contracting partner.\n\nSeamless B2B contract setup and ongoing support.\n\nOpportunity to work on a modern tech stack within a complex, financial-domain project.","description_format":"text","description_chars":2152,"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":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-23T15:00:08Z"}],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.542,"p_room":1,"age_days":2,"expected_fill_days":22,"reasons":["conf:10","agency","velocity","win:early"],"computed_at":"2026-09-24T05:45:00Z"},"pay":{"stated_usd_annual":68000,"is_top_pay":false},"html_url":"https://alion.io/job/optiveum-senior-frontend-react-developer","json_url":"https://alion.io/job/optiveum-senior-frontend-react-developer.json","meta":{"generated_at":"2026-09-24T17:10:29Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}