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Léo M.LM

Léo M.

⭐ Senior ReactJs, Node, Graphql

€450/day
5 projects
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Léo

Hello!

🗒️Computer Science Engineer by training**, I have been doing web development for over 13 years with personal projects, and over 8 years professionally. Before that, I held several positions, from **fullstackdeveloper to **lead dev and architect**, in both start-ups and multinationals. I have acquired technical and human experience, which allows me to better understand the vision of a project and find the best solutions by anticipating growth.
Very curious, I like to learn and face new challenges.

🚀Freelancerfor nearly two years, I have already completed more than 5 missions, ranging from a few days to several months. I can handle an MVP, a complete project, or a simple evolution of your applications.

🌳 I am particularly interested in working on projects with **environmental or social impact**, but I am open to all proposals.

💻 I mainly work withNode.js, Graphql, React, Mysqland of course **Typescript**.
With expertise in Git, Docker/containerization, and DevOps.
On the front-end side, I am used to using Figma and interacting with an UX/UI team.

Thank you and do not hesitate if you have any questions.
See you soon and have a nice day ☀️
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Nantes (up to 50km), Paris (up to 50km), Lyon (up to 50km), Lille (up to 50km), Toulouse (up to 50km)

Experience

  • Léo Mullot
    Fullstack Developer (Freelance)
    SOFTWARE PUBLISHING
    February 2024 - Today (2 years and 6 months)
    Nantes, France
    Being a freelancer for 2 years, I have had the opportunity to undertake various missions:
    • Frontend expert for the Ministry of Foreign Affairs on a long-term assignment. I migrated an application to a more modern stack (Node and React).
    • Added a GraphQL layer for the specific needs of an application (Bolidem).
    • Developed MVPs for a startup, based on Figma mockups (Hedito).
    • Provided support to a development team to accelerate the development phase (Integrative Phenomics).
    • etc.
    React.js Node.js Docker Typescript GraphQL
  • Sencrop
    Fullstack Developer
    AGRICULTURE
    December 2022 - November 2023 (1 year)
    Lille, France
    I worked for a year at Sencrop, a company that supports farmers in monitoring crops, water usage, and pesticides. I joined a squad in charge of a new solution for their application: weather. I was able to:
    • Develop fullstack in a hexagonal architecture (React & Node).
    • Add features in A/B testing.
    • Work in a 100% remote setting.
    Node.js React.js Agile Methodology Fullstack Docker
  • SKEEPERS
    Lead Developer
    E-COMMERCE
    December 2021 - December 2022 (1 year)
    Nantes, France
    Within a start-up that grew into a scale-up, I transitioned from a fullstack developer role to Lead Developer for a team of 4 people.
    • Training new joiners.
    • Code review support.
    • Implementation of the technical architecture.
    • Technical supervision of the team.

    And in parallel, I continued development tasks:
    • Development of features from spec to production (Node, GraphQL, React).
    • Design of backend solutions and task automation (managing emails, client contracts, etc.).
    • Front-end integration based on Figma mockups.
    Node.js React.js GraphQL MySQL Docker

Reviews

5.0

Out of 3 ratings

C

Cédric

CTO - NormeRH

Reviewed on 3/16/2026

A very high-quality intervention. I really recommend Leo. Leo joined our technical team as a developer. He was able to: * Understand the complex technical and business context in record time. * Integrate into the team, whether with developers or functional teams. * Deliver good quality code that significantly advanced the project. * Be proactive in proposing solutions, both in terms of methodology and technical solutions, while remaining attentive to our constraints and history. Looking forward to working with him again :-).
F

Fabien

Bolidem

Reviewed on 2/27/2024

2nd mission and same comment: delighted with Leo's work, who was again competent, fast, and very helpful. We recommend him 100%.

Recommendations

Pierre-Loan JanczakPJ
Elisa DemanezED
Pierre-Loan Janczak and 1 other person have recommended Léo

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Education

  • Engineer (in computer science)
    Polytech' Paris Sud
    2019
    - Web development - Applicative development - Database admin - Project management - Communication
  • DUT informatique
    IUT Montpellier
    2016

Skill set

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