{"id":971161,"url":"https://alion.io/job/ytec-senior-front-end-developer-react-next-js","title":"Senior Front-end Developer (React / Next.js)","company":{"id":699435,"name":"Ytec","domain":"ytec.nl","url":"https://alion.io/company/ytec-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","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":"structured","locations":["Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":55000,"max_usd":117000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":12},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Next.js","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"Django","optional":true},{"name":"JavaScript","optional":true},{"name":"Python","optional":true},{"name":"SQL","optional":true}],"status":"live","first_seen_at":"2026-06-12T16:14:09Z","employer_posted_date":"2026-06-12","last_verified_at":"2026-10-21T10:56:14Z","board_verified":true,"closed_at":null,"days_open":132,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":131},"description":"Your mission\nDesign and build modern React / Next.js applications that stay maintainable as they grow.\nMake and defend architectural decisions - and understand the performance consequences of them.\nSet front-end standards, build reusable components, and create patterns the whole team builds on.\nWork closely with our back-end developers to integrate APIs and business logic cleanly.\nOwn quality end to end, including in production: reading logs, tracing issues, and diagnosing incidents together with our DevOps and sysadmins rather than handing them off.\nImprove performance, accessibility, and overall UX across projects.\nReview code, raise the bar, and help good front-enders across our teams become even better - without slowing them down.\nYour profile\n5+ years in front-end development, with deep, current React and TypeScript experience.\nReal production experience with Next.js - you understand rendering strategies (SSR / SSG / ISR / CSR), hydration, routing, and when to use which, not just how to scaffold an app.\nA strong grasp of front-end architecture: component design, state management, and how structural choices affect maintainability, bundle size, and runtime performance.\nThe ability to measure and improve performance (Core Web Vitals, bundle analysis, profiling) - and to understand the cost of the trade-offs you make.\nSolid experience integrating front-ends with APIs and back-end systems.\nComfort across the full lifecycle: version control, testing, debugging, CI/CD, deployment, and maintenance.\nExcellent English and the confidence to work directly with product owners and clients.\nSenior judgment: you know when to be rigorous and when to be pragmatic, you take ownership of outcomes, and you make the people around you better.\n Nice to have: Python/Django and SQL (you'll work closely with our back-end teams), real depth in accessibility, a good design sensibility, or experience setting standards within a team.Why us?\nChallenging custom software projects.\nA highly skilled and technical team.\nShort communication lines and little bureaucracy.\nSignificant influence on front-end architecture and development standards.\nOpportunities to improve processes and shape the future of front-end development within the company.\nA culture that values expertise, ownership, and continuous improvement.\nA salary between €3000 - 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