Independent technical advice, AI included
I give independent, fully remote advice on your architecture, code or AI plans, before you start a project or accept a proposal. You receive written recommendations your team can act on.
Jean-Baptiste Thery
Senior full-stack TypeScript & AI freelance developer
Agentic developer, within your rules
Available for fully remote freelance
- Format
- Focused review, working session or ongoing support
- Price
- Reviews quoted, or €550 excl. VAT a day for ongoing support (indicative)
- Organisation
- Fully remote, by video and in writing
Advice on the decisions that shape your project
A technology choice, an unfamiliar codebase or a supplier's proposal is hard to judge from the outside. I examine the context, explain the trade-offs and name the questions to settle before you commit.
It also suits founders building with AI tools who need the output reviewed and the next steps structured.
What the review can cover
- A technical plan based on your product goals and constraints
- An architecture or code review with prioritised recommendations
- An assessment of where AI can help your product or team, and where it cannot
- A review of a supplier's proposal, assumptions and scope
- Guidance on development, testing and release practices
- A written record of decisions, open questions and next steps
From your first message to the handover
The same four steps on every engagement, so you know what happens next and what you receive.
You describe your project
Send a short brief on Malt or LinkedIn: your project, budget and target date. I confirm availability and the next step.
We agree the scope
Scope, schedule, pricing (fixed price or day rate), working hours and how we communicate, agreed in writing before work starts.
You follow the work
Code reviews, demos or written reports keep progress visible. Every change I deliver is reviewed and tested.
Handover and follow-up
Documentation, recommendations and, for development work, code whose rights the contract assigns to you. Maintenance by agreement.
Describe your project on MaltArchitectures I built and lived with
My advice comes from projects whose architecture I built and then lived with, on client engagements and on my own tool.
Institutional design system for React and Angular
Web Components let one library serve React and Angular and render on the server, with components built around RGAA 4.1 and WCAG 2.1 AA requirements.
Sciences Po · Confidential project
Full-stack foundation of an academic portal
A Spring Boot backend and a multi-zone Next.js frontend, decided and built with another developer as the foundation every later feature relies on.
Thematic mapping with no server
Every step runs in the browser, up to millions of rows and even offline, so no server ever receives the user's data. A complete rewrite designed by the Cartography Lab, which I developed.
Cited search for coding agents
Coding agents get cited passages without your files going to a hosted index, with opt-in semantic search and performance measured on real repositories.
What clients and colleagues say
“On top of being very up-to-date with all techs and stacks front, he is a very creative software engineer who will use his curiosity to try and offer the best solution possible for the problem, without sticking to his guns.”
LinkedIn“J'ai eu la chance de travailler avec Jean-Baptiste sur un projet d'agence. Et j'ai été impressionné par son implication et encore plus par la qualité de son travail. Motivé et rigoureux, Jean-Baptiste est aussi force de proposition et apporte de véritables solutions tout au long du projet. Je ne peux que vous recommander de faire appel à lui, mais laissez-en un peu pour les autres !”LinkedIn“I strongly recommend working with JB. He was instrumental in getting our frontend off the ground, handling everything with zeal, unwavering dedication, and unparalleled reliability.”LinkedInAdvice from someone who still writes the code
My judgement on architecture, testing and releases was formed on delivered projects, from Oney's landing pages to Suzuki France's national platforms. That was before AI coding tools, and my advice on AI comes from using it in my own work.
Through jCode, I work with public institutions, established companies and startups. My own products, WorkoutGen and Ragmir, taught me what follows a release.
- of web development
- 10 years
- missions completed on Malt (November 2026)
- 80+
- as a freelancer
- 7 years
- from 47 client ratings on Malt (November 2026)
- 5.0/5
Areas of expertise
Turn the recommendations into a plan
Compare the available services on the services overview.
Getting technical advice
Do I need to be a developer?
No. I explain the review in terms of your product, budget and constraints, with technical detail only where it helps you weigh a choice or brief a developer.
How does consulting differ from development work?
Consulting recommends; a development engagement also carries out the agreed work, and the two can be combined. If you are deciding who should build an AI feature, the guide to choosing a freelancer, an agency or a hire compares the three options.
Can you support us over several months?
Yes, on a few agreed days each month: architecture decisions, code reviews and advice on how your developers use coding agents. Meeting times are agreed with your team, and the rest runs in writing.
Can you review code produced by AI tools?
Yes. I develop with AI coding tools such as Claude Code and Codex myself. I review the code, its behaviour and its fit with your application, then set written priorities for fixes, tests and further development.
Can you tell us whether we need AI at all?
Yes, and the answer is often no. Many needs are met by a plain automation or a few lines of code, which cost less to run and are easier to audit than a model. I recommend AI only where rules fall short, and say so in writing.
How is the work priced?
A focused review or a working session is quoted against an agreed scope. Ongoing support is billed by the day, at an indicative €550 excluding VAT as of October 2026.
Let's talk about your project.
Tell me what you want to build or improve, your budget and your target date.
- Fully remote
- English or French
- France · UK · US