Freelancer profile translated to English.
Back to original languageAbout Thomas
MERN Stack Full Stack Developer specializing in building sustainable and scalable web applications.
I work on projects with high business complexity: multi-entity platforms, secure back-offices, process automation, advanced user rights management, and third-party service integration.
My approach: clean code, thoughtful architecture, security by design, and clear documentation to facilitate maintenance and collaboration.
I have supported demanding companies like Qonto, as well as scale-ups and multi-entity groups, on long-term missions (6-12 months), in full remote, with a strong product orientation.
Current Stack: MongoDB, Express, React, Node.js
Complementary Technologies: TypeScript, Next.js, PostgreSQL, AWS, Third-party APIs
What I can do for you:
→ Develop a robust and scalable MVP from scratch
→ Redesign or optimize an existing application
→ Integrate complex automations and business workflows
→ Design clear and maintainable architectures
→ Quickly integrate into your team and processes
Available immediately for remote missions, ideally medium to long term.
👉 Do you have a project, product, or technical challenge to clarify?
Let's have a simple chat to see how I can help you.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Groupe GenevoiseMulti-entity Back-office Platform Development | MERN StackCONSULTING AND AUDITSSeptember 2024 - September 2025 (1 year)Lyon, FranceContextA group comprising several companies needed a centralized platform to manage documents, user rights, and legal compliance, along with dedicated lead acquisition websites.InvolvementI designed and developed a secure back-office that allows for:
- Management of multi-entity organizations with advanced rights & access control (users, permissions, delegations)
- Document structuring via hierarchy, metadata (tags, types, statuses), and versioning
- Centralized administration through a multi-organization dashboard
Concurrently, I developed several websites based on Figma mockups, focused on acquisition (landing pages, automated forms, dynamic blog via Sanity CMS) in close collaboration with the product and design teams.Result / Impact- A stable and scalable platform used by several companies within the group
- Operational time savings through automation
- Legal compliance ensured from the design phase
- Smooth collaboration with non-technical teams (product, design)
What this demonstratesAbility to manage complex long-term projects, rigor in security and compliance, strong product orientation, autonomy, and effective communication with diverse profiles. - UniflowE-commerce & SaaS Application Development | MERN StackDIGITAL AND ITJune 2023 - June 2024 (1 year)Lyon, FranceContextA web agency needed a full-stack developer to design and deliver several client projects: e-commerce, internal dashboards, showcase websites, and SaaS applications.InvolvementI managed the entire development cycle:
- Back-end architecture (REST APIs, inventory management, secure payments)
- Responsive front-end integration with optimized UX
- Cloud deployment and maintenance (performance optimization, monitoring)
- Automation of administrative tasks via internal dashboards
Result / Impact- Several stable and high-performing projects delivered to production
- Client satisfaction due to on-time delivery and rigorous follow-up
- Applications designed for scalability and maintainability
What this demonstratesTechnical versatility (e-commerce, SaaS, dashboards), ability to deliver quickly without sacrificing quality, agile collaboration, and management of multiple projects in parallel. - EDULIBFeature Development & UI Redesign | E-learningEDUCATION AND E-LEARNINGJanuary 2023 - May 2023 (4 months)Paris, FranceContextAn e-learning platform needed new back-end features and a front-end redesign according to Figma mockups.Involvement
- Development of new back-end features (Ruby on Rails 7)
- Front-end redesign faithful to Figma specs (HTML/CSS/Bootstrap)
- Development of automated tests (Rspec, Cucumber)
Result / Impact- Platform enhanced with new functionalities
- Modernized and more user-friendly interface
- Increased test coverage for stability
What this demonstratesQuality-focused approach (automated tests), technical versatility (back-end + front-end), integration rigor.
Reviews
Elisa
NOVA VITA
Reviewed on 11/7/2022
First mission with Thomas went very well. Thomas is professional, available, and takes the time to find the best option to ensure the implemented solution is practical, accessible, and cost-effective for the client. Communication via Slack is very smooth. He takes your deadlines and urgent needs into account. I recommend him!
Recommendations
LG
FU
+5
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Education
- Computer ProgrammingEcole 422021Programmation informatique
- Computer ProgrammingLe Wagon2019Programmation informatique