Freelancer profile translated to English.
Back to original languageAbout Trystan
I deliver SaaS that run in production and I leave behind productive teams that follow best practices.
Senior Fullstack Engineer and software architect. I join founders to build and scale their software product end-to-end by bringing my technical and organizational expertise.
Two ways to work together
- Founding Engineer, building V1 together.
You have a SaaS idea, not (yet) a tech team. I build the solution end-to-end: Architecture, Frontend, Backend, Infra, and Devops.
I master AI in my Workflow to create MVPs that validate a real need, ready to be given to Sales to test the market. We iterate together at the speed of user feedback and deploy within the hour.
- Tech Lead, establishing processes to optimize your teams
Your team is delivering, but the infrastructure is fragile, PRs take more than a week to get to production, and the DevOps and agile culture doesn't exist.
I share my technical and organizational expertise to improve the lives of your Tech, QA, Product, and Sales teams.
My Stack
I prefer using the right tools for the right jobs. My Stack and preferences:
Backend : Node.js, Golang, Rust
Frontend : Angular, React, Svelte
Data : PostgreSQL, MongoDB
Infra : Docker, Terraform, CI/CD
AI : Claude Code, AI agents, RAG, MCP, Fine-tuning
French
Native or bilingual
English
Fluent
Can work on-site
Bordeaux (up to 40km), Paris (up to 20km)
Experience
- CriteriumFounderEDUCATION AND E-LEARNINGNovember 2025 - March 2026 (4 months)Bordeaux, FranceI created Criterium.app, a SaaS that allows educational managers to integrate AI into their training to provide their learners with immediate, 7/7 support.Criterium uses RAG indexing to quickly and affordably retrieve training content, delivering precise information tailored to the training center's pedagogy.I developed my own CRM, did client prospecting, and sales calls to onboard my clients onto the app.
- SomanyWaysLead Senior Fullstack EngineerSOFTWARE PUBLISHINGApril 2024 - Today (2 years and 2 months)Bordeaux, FranceResponsible for the entire product (Front, Back, Infra, DevOps). Guardian of the architecture and product vision, I combine technical excellence and AI innovation.
- Engineering & Quality: Technical leadership, major refactors (Angular, NestJS, Vitest), and application of DDD/TDD/SOLID standards.
- Agentic AI Innovation: Development of intelligent chatbots and acceleration of dev cycles via agentic LLMs (BMAD, Claude Cowork & Make AI Automations).
- Integration of new AI Workflows to enable the product team (PO, PM, Designer) to "vibecoder" changes on the app.
- Product Ownership: Roadmap definition, OKR prioritization, and cross-functional communication.
- Business Impact: Drastic infrastructure optimization, reducing Cloud costs by 70%.
- Code418Fullstack DeveloperEDUCATION AND E-LEARNINGJanuary 2020 - January 2024 (4 years)Bordeaux, FranceLong-term freelance mission for a distance learning center, focused on pedagogical innovation and internal tool optimization.- Design and development of business tools for administrative and pedagogical management- Main stack: Node.js, TypeScript, PostgreSQL- Configuration, customization, and maintenance of Moodle (PHP, MySQL/PostgreSQL)- Development of custom features and improvement of IT processes- Administration of Linux servers and databases- Collaboration with pedagogical and operational teamsIn parallel: WordPress Trainer- Creation of certified training content (Qualiopi, CPF)- Improvement of e-learning courses on Moodle- Training of 300+ learners
Reviews
AD
Account deleted
Reviewed on 3/9/2020
Very good provider. Reliable and fast. See you soon if an opportunity arises!
Erica
Stilrent
Reviewed on 3/9/2020
Very responsive, solution-oriented
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Education
- Engineering Degree in Architecture and Software Systems EngineeringCNAM2026VAE
- Digital Director (Master)Artfx2019C#, Python, Game Engine (Unreal, Unity) 3D Modeling (Blender, Maya)