{"id":898652,"url":"https://alion.io/job/fs-roup-unior-ull-tack-eveloper-typescript-eact-upabase-ostgres","title":"Junior Full-Stack Developer (TypeScript / React ・ Supabase / Postgres)","company":{"id":681407,"name":"KFS GROUP","domain":"kfs-group.com","url":"https://alion.io/company/kfs-group","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Join","truth_index":null},"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":"explicit","locations":["Budapest, Hungary"],"countries":["HU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Claude","optional":false},{"name":"Copilot","optional":false},{"name":"Cursor","optional":false},{"name":"GitHub","optional":false},{"name":"JavaScript","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"Supabase","optional":false},{"name":"TypeScript","optional":false},{"name":"CI/CD","optional":true},{"name":"Debian","optional":true},{"name":"Firebase","optional":true},{"name":"Git","optional":true},{"name":"Next.js","optional":true},{"name":"Python","optional":true},{"name":"Tailwind CSS","optional":true},{"name":"Vite","optional":true}],"status":"live","first_seen_at":"2026-06-23T11:58:14Z","employer_posted_date":"2026-06-23","last_verified_at":"2026-10-16T11:41:02Z","board_verified":true,"closed_at":null,"days_open":115,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":114},"description":"Location: Hungary Type: Full-time or working student / part-time - both welcome Level: Junior ・ Working student ・ Recent graduate\nWhy this role\nWe build software that real businesses run on. You'll join a small, senior team where you own real features early - not tickets that someone pre-chewed for you. You'll learn fast, ship to production within your first weeks, and have a senior engineer in your corner the whole way.\nThis is a role for someone early in their career who thinks in systems, not just syntax.\nLet's be honest about AI (please read this)\nWe don't expect you to hand-type every line from memory, and we don't want you to. Of course you'll use Cursor, Copilot, Claude, and whatever comes next - that's not cheating, that's the job in 2026. We want you to vibe-code.\nBut here's the thing the tools can't do for you: they don't know what the right answer is. We hire for that. Our focus is architecture and judgment - the ability to decide what should be built, how the data should be shaped, where a responsibility belongs, and whether the code the AI just generated is actually correct, secure, and maintainable, or just plausible-looking.\nSo the bar isn't \"can you write a for-loop without help.\" The bar is: do you understand the system well enough to steer the tools and recognize a good result when you see one? If you're early in your career but you genuinely _get_how the pieces fit together, you're exactly who we're looking for.\nTasks\nWhat you'll do\nBuild product features end to end with AI-assisted tooling: database → API → React UI.\nLearn to model data properly in Postgres - schema, relationships, migrations, and Supabase Row-Level Security - and understand why it's structured that way.\nBuild clean, usable interfaces in React + TypeScript.\nRead, question, and improve the code you and the tools produce - and learn to tell solid architecture from a shortcut that'll hurt later.\nGrow quickly with real mentorship, code reviews, and ownership.\nOur stack (what you'll learn on the job)\nLanguages: TypeScript, Python\nFrontend: React, [Next.js / Vite], Tailwind CSS\nBackend / Data: Supabase (Postgres, Auth, Storage, Edge Functions), SQL, RLS\nTooling: Git/GitHub, CI/CD, Claudflare, and the AI dev tools you already use\nAI-native workflow: Cursor / Copilot / Claude as a normal part of how we build\nSysops: Debian, terminal, etc\nYou won't know all of this on day one. No junior does. You'll learn it here.\nRequirements\nWhat we're looking for\nMust-haves\nA real foundation in TypeScript / JavaScript and React - through study, side projects, an internship, or things you've built for fun.\nArchitectural curiosity: you care why code is structured a certain way, not just whether it runs.\nBasic comfort with SQL / relational data - or the clear ability to pick it up fast.\nYou use AI dev tools well and critically - you don't blindly paste whatever they output.\nYou communicate clearly in English and you're genuinely eager to learn.\nBased in Hungary, or able to work reliably within CET hours.\nNice-to-haves\nA GitHub or portfolio with something you actually built - however small or messy.\nExposure to Supabase, Firebase, or any Postgres-backed app.\nAn eye for UI/UX.\nCurrently studying computer science or similar (working-student arrangement very welcome).\nGerman or another European language (not required - English is our working language).\nWe care far more about how you think than about your CV length.\nBenefits\nHow we work\nSmall team - you learn directly from people who've shipped a lot, and your work matters from week one.\nHybrid: a real office in HU plus flexibility to work from home most of the week.\nStudent-friendly: flexible hours; we'll work around your lectures and exams.\nLow bureaucracy: clear ownership, short feedback loops, no death-by-process.\nWhat we offer\nFair junior compensation with clear room to grow.\nReal mentorship - not \"figure it out alone.\"\nModern hardware and the AI tooling you need.\nA learning budget for courses, books, and conferences.\nThe chance to grow into a serious engineer on a product that real customers use.\nHow to apply\nSend a short note about yourself plus your GitHub / portfolio / LinkedIn. Built something you're proud of - or even something broken you learned from? Link it. A CV is welcome, but what you've made and how you think tells us more.\nNo essay required. 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