Jean Sébastien Techer · JST6
You’re in the right place.
Looking for a Senior / Founding / Cloud & AI Engineer — that’s me.
Architecture, delivery, sovereign cloud, and AI in production. Let’s talk for 30 minutes — even just to clarify what you need.
No commitment · No hard pitch · Just a conversation.
Four ways people find me
Same person. The title depends on what you need right now.
Senior Engineer
Code, architecture, and standards. A senior who ships — not a ticket-taker.
Founding Engineer
From first commit to scale: product ownership, stack, delivery, and handover.
Cloud Engineer
Infra, CI/CD, Scaleway / sovereign cloud — production that holds, costs under control.
AI Engineer
Agents, MCP, grounded RAG — AI in production, not a throwaway POC.
Not ready for a call? Start here.
Auto audits in 2 minutes, or an express audit on video — no perfect brief required.
Auto audits
~2 min · instant score · no booking
Express audits
15–30 min · video · no commitment
Discovery call
Clarify the need and next step.
15–30 min
Tech lead / architecture
Stack, delivery, sovereign cloud.
30–45 min
AI / agents / MCP
Use cases, RAG, governance.
30–45 min
Shared CIO / CockpIT
IT landscape, executive cockpit, shared services.
30 min
We should talk if…
You don’t need a perfect brief. A conversation is enough to see if we match.
- You have a product to move forward and need a reliable senior.
- You want cloud / AI in production — without debt or vibe coding.
- You’re looking for a founding engineer or external tech lead, not a quote factory.
- You just want to challenge a technical idea — that’s already a good reason.
What they say about me
Feedback from clients and partners
Trusted by
“Jean Sébastien supported us brilliantly on our web & mobile app. He built a secure front and back architecture for health data. Highly recommended!”
“Jean-Sébastien is a complete fullstack developer: front, back, and devops with real infra sensibility — near top-tier security standards for health data. Formidably effective.”
“Jean-Sébastien delivered many successful projects at Scaleway. Passionate, pragmatic, versatile and effective. Strong technical proposals — and led a team of 7 engineers.”
Next step: a call.
No endless form. Pick a slot, we talk, we see if it’s worth going further.
Jean Sébastien Techer — Senior / Founding / Cloud & AI Engineer