Extra developer for your team
Your technical team is in place, but you’re missing someone for one specific area. I join the team a few days a week and work like everyone else, with your tools.
- From a few weeks to a few months
- €500 excl. VAT per day
30-minute call, free and with no commitment.
When to call me
An AI project
Your team wants to ship an AI feature and nobody there has done it before.
An app to take over
It already exists and you need someone to make it more reliable, like I did on Aexmed.
A deadline coming up too fast
The team isn’t big enough to hit the date, and hiring would take too long.
What I know well
TypeScript, React, Next.js and NestJS, with PostgreSQL. SwiftUI for iPhone apps. And on the AI side, RAG, MCP servers and agents.
The price
- Extra developer for your team
- €500 excl. VAT per day
A contract lasts from a few weeks to a few months.
Some examples
What a client says
“Killian is an excellent developer. He delivered what we asked for very quickly and accurately. Communication with him was always smooth and efficient. He listened to our needs and reacted very quickly when unexpected things came up, which made our collaboration very pleasant and productive.”
Your questions
Another question? Email me at killian@propell.studio
Do you work remotely?
Most of the time, yes. I’m in Rennes and I work with your tools, like the rest of your team.
How many days a week?
A few days a week, depending on what you need. We set it together before we start and it’s written in the proposal.
How long does a contract last?
From a few weeks to a few months. My contract on Aexmed lasted 5 months.