{"id":2406003,"url":"https://alion.io/job/syone-full-stack-developer-java-node-js-react","title":"Full Stack Developer – Java / Node.js / React","company":{"id":2555720,"name":"Syone","domain":"syone.com","url":"https://alion.io/company/syone","size_band":"51-200","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Deel","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-14T06:34:16Z"}},"role":"Backend","role_family":"Backend","seniority":"junior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Lisbon, Portugal"],"countries":["PT"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":26000,"max_usd":68000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"JavaScript","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"CI/CD","optional":true},{"name":"GDPR","optional":true},{"name":"Git","optional":true},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-10-01T17:05:43Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-15T02:28:31Z","board_verified":true,"closed_at":null,"days_open":13,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":13},"description":"Job details\nWhat you will do\nDevelop and maintain Full Stack applications using Java, Node.js and React.\n\nDevelop and integrate REST APIs and backend services.\n\nWork with Java / Spring Boot and Node.js on the backend.\n\nDevelop modern and responsive interfaces using React.\n\nWork with databases and contribute to scalable and maintainable solutions.\n\nCollaborate with developers, QA and other stakeholders within an Agile/Scrum environment.\n\nParticipate in the full software development lifecycle, from development to testing and deployment.\n\nContribute to code quality, performance and continuous improvement.\n\nWhat you need to bring\nProfessional experience as a Full Stack Developer / Software Engineer.\n\nSolid experience with Java and Spring Boot.\n\nHands-on experience with Node.js.\n\nGood experience with React.js.\n\nExperience developing REST APIs.\n\nGood knowledge of JavaScript and/or TypeScript.\n\nExperience with databases and SQL.\n\nFamiliarity with microservices architecture is a plus.\n\nExperience with Git and CI/CD is a plus.\n\nGood communication skills in English.\n\nBy applying, you accept our GDPR policies. Your personal data in your CV and documents will be used solely for processing your application at SYONE. SYONE, S.A. (NIPC 504729624) is the data controller, located at Rua Alfredo da Silva, 8-A, Edifício Stern, Piso 3D, 2610-016 Amadora. We will use your data to tailor your application to relevant vacancies and for potential employment contracts. If selected, your data will be kept during your employment and for at least two years after. If not selected, your data will be kept for two years for future vacancies and then deleted, except for your contact details. You can exercise your rights (access, rectification, erasure, etc.) by emailing . Your data may be shared with our HR service providers and will be stored securely. You can withdraw your consent at any time. We will not use your data for other purposes without your express consent. For more information, email . 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