Budapest, Hungary Hybrid Internship

KFS GROUP is hiring a Junior Full-Stack Developer (TypeScript / React ・ Supabase / Postgres)

Responsibilities

  • Build product features end to end with AI-assisted tooling: database → API → React UI.
  • Learn to model data properly in Postgres ― schema, relationships, migrations, and Supabase Row-Level Security ― and understand why it's structured that way.
  • Build clean, usable interfaces in React + TypeScript.
  • Read, question, and improve the code you and the tools produce ― and learn to tell solid architecture from a shortcut that'll hurt later.
  • Grow quickly with real mentorship, code reviews, and ownership.

Requirements

  • A real foundation in TypeScript / JavaScript and React ― through study, side projects, an internship, or things you've built for fun.
  • Architectural curiosity: you care why code is structured a certain way, not just whether it runs.
  • Basic comfort with SQL / relational data ― or the clear ability to pick it up fast.
  • You use AI dev tools well and critically ― you don't blindly paste whatever they output.
  • You communicate clearly in English and you're genuinely eager to learn.
  • Based in Hungary, or able to work reliably within CET hours.

Nice to Have

  • A GitHub or portfolio with something you actually built - however small or messy.
  • Exposure to Supabase, Firebase, or any Postgres-backed app.
  • An eye for UI/UX.
  • Currently studying computer science or similar (working-student arrangement very welcome).
  • German or another European language (not required ― English is our working language).

Benefits

  • Small team ― you learn directly from people who've shipped a lot, and your work matters from week one.
  • Hybrid: a real office in HU plus flexibility to work from home most of the week.
  • Student-friendly: flexible hours; we'll work around your lectures and exams.
  • Low bureaucracy: clear ownership, short feedback loops, no death-by-process.
  • Fair junior compensation with clear room to grow.
  • Real mentorship ― not 'figure it out alone.'
  • Modern hardware and the AI tooling you need.
  • A learning budget for courses, books, and conferences.
  • The chance to grow into a serious engineer on a product that real customers use.

Work Arrangement

Hybrid — Hungary

Additional Information

  • Language requirements: English is the working language; German or another European language is nice-to-have.
  • Travel: not mentioned.
  • Hours: flexible hours, student-friendly.
  • Shifts: not mentioned.
  • Equipment: modern hardware and AI tooling provided.
  • Clearance: not mentioned.
  • Background checks: not mentioned.
  • Contract duration: not mentioned.
  • Probation: not mentioned.
  • Relocation: not mentioned.
  • Training: learning budget for courses, books, and conferences.
Job Details
Location Budapest, Hungary
Work mode Hybrid
Employment Internship
Department Software Development
Category Full-Stack
Posted 3 months ago
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