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Ethan K.EK

Ethan K.

Senior Fullstack Software Engineer

€650/day
Grasse, FR
8-15 years

Average response time: 1 hour

About Ethan

I help technical founders ship faster, from AI agent systems to full stack applications, EU-sovereign infrastructure...

As a senior fullstack engineer with 10 years of experience, I build the systems that sit between "great idea" and "deployed product": multi-agent orchestration platforms, full-stack TypeScript application and GDPR-compliant infrastructure on European providers.

My stack: TypeScript/Bun, React, Next.js, Python, Windmill (workflow orchestration), Hetzner, Supabase, Docker.



What I've built recently:

→ Multi-agent AI orchestration platform (MCP-first architecture, Windmill + Supabase)

→ EU-hosted PaaS deployment pipelines (git-to-production on Hetzner)

→ Voice-controlled autonomous agent systems (sub-500ms latency)



I work best with founders and small teams who need a senior engineer who can own an entire vertical — from architecture to deployment — without hand-holding.



Based in the South of France (CET).

Open to contract work and technical partnerships.

  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Fluent

  • Italian

    Conversational

Remote only
Primarily works remotely

Experience

  • Get Scored
    Founding Engineer
    September 2025 - February 2026 (5 months)
    First engineer on a mobile app bringing transparency to fashion — rating brands on sustainability with data-driven ABCDE scores across waste, materials, transport, energy, labor practices, and more.
    Built the full product solo from zero: Supabase data model with full-text search and RLS, TypeScript monorepo (Turborepo), React Native / Expo mobile app with deep linking, and Next.js custom backoffice!
  • SKIPCALL
    Développeur Fullstack Sénior
    March 2025 - September 2025 (6 months)
    ▸ Developed the Twilio voice integration layer — device lifecycle management, automatic token refresh, graceful error recovery — enabling reliable in-app calling for sales sequences.
  • LumAI
    Solopreneur
    June 2024 - Today (2 years and 1 month)
    LumAI is a SaaS that make you able to deal with language complexity on any type of content ; audio, text or vidéo !

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Education

  • EPITECH - European Institute of Technology EPITECH - European Institute of Technology
    Epitech Nice
    Epitech est une école d'informatique créée en 1999 qui forme en 5 ans après-bac des experts du secteur. Elle permet de transformer une passion en expertise via une pédagogie résolument innovante, organisée par projets. Elle est présente dans 13 villes de France et 4 villes d'Europe. Epitech délivre un titre d'Expert en Technologies de l'Information (Bac+5), homologué Niveau 1 par l'Etat au niveau de la Commission Nationale de la Certification Professionnelle (CNCP).

Skill set

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