{"id":2113077,"url":"https://alion.io/job/link-group-senior-react-developer-3","title":"Senior React Developer","company":{"id":3913591,"name":"Link Group","domain":"linkgroup.pl","url":"https://alion.io/company/link-group-2","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Frontend","role_family":"Frontend","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":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":18000,"max":23000,"currency":"PLN","period":"month","gross":null,"usd_annual":70608},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"GraphQL","optional":false},{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"Babel","optional":true},{"name":"Docker","optional":true},{"name":"GCP","optional":true},{"name":"Kubernetes","optional":true},{"name":"Next.js","optional":true},{"name":"Webpack","optional":true}],"status":"live","first_seen_at":"2026-09-16T22:01:13Z","employer_posted_date":null,"last_verified_at":"2026-09-16T22:01:13Z","board_verified":false,"closed_at":null,"days_open":30,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":30},"description":"At Link Group, we specialize in building tech teams for Fortune 500 companies and some of the world's most exciting startups. Our mission is to connect talented professionals with opportunities that align with their skills, interests, and career aspirations.\n\nWe are currently looking for a Senior React Developer to join our team and lead the development of cutting-edge front-end solutions for global clients.\n\nAbout the Project\nThe project involves developing complex, scalable web applications for the finance/stock exchange industry. As a Senior React Developer, you will play a key role in architectural decisions, performance optimization, and mentoring junior developers.\n\nTech Stack\n\nReact.js, TypeScript, Redux\n\nJavaScript (ES6+), HTML5, CSS3\n\nNext.js, Webpack, Babel\n\nRESTful APIs, GraphQL\n\nTesting frameworks (Jest, Cypress, React Testing Library)\n\nCI/CD, Docker, Kubernetes\n\nCloud platforms (AWS, GCP, Azure)\n\nWhat We Offer\n\nTailored opportunities to match your professional interests and goals.\n\nA dynamic and collaborative work environment.\n\nAccess to exciting and diverse projects for global clients.\n\nCompetitive compensation aligned with your expertise.\n\nOngoing opportunities for professional growth and development in front-end technologies.\n\nIf you're passionate about creating top-tier web applications and leading technical innovations, we’d love to hear from you!\n\nApply today and join us at Link Group to make an impact!\nZakres obowiązków\nDesign and develop high-performance, scalable front-end applications using React.js.\nLead architectural discussions and implement best practices for front-end development.\nOptimize applications for speed, security, and maintainability.\nCollaborate closely with back-end developers, UI/UX designers, and stakeholders.\nWrite and maintain unit and integration tests to ensure code quality.\nMentor and support junior developers by sharing knowledge and best practices.\nStay updated on emerging front-end technologies and drive innovation within the team.\nWymagania\n\nAt least 5+ years of experience in front-end development.\n\nExpert proficiency in React.js, TypeScript, and JavaScript (ES6+).\n\nStrong experience with state management libraries like Redux.\n\nDeep understanding of performance optimization techniques and front-end architecture.\n\nExperience integrating with RESTful APIs and GraphQL.\n\nHands-on experience with unit and integration testing (Jest, Cypress, React Testing Library).\n\nStrong problem-solving and debugging skills.\n\nKnowledge of CI/CD processes and deployment in cloud environments.\n\nGood command of English.\n\nTech stack\nReact\nTypeScript\nJavaScript\nRedux\nREST API\nGraphQL\nIntegration 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