You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Leny BernardLB

Leny Bernard

CTO Expert PHP - JS | Symfony - React

€600/day
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Leny

Engaged CTO — +15 years of experience in tech, product, and ecological transition


For over 15 years, I have been building digital projects with technical rigor and purpose. Co-founder of the agency Troopers, I touched everything: development, architecture, team management, client relations, strategy. This total immersion allowed me to acquire a solid product culture and a strong adaptability, in complex environments as well as in rapid execution phases.

Subsequently, I joined or supported several impact startups like Toovalu or GoodSteps (acquired by Sami), where I was able to use my skills for ecological and societal transition. I developed business expertise around carbon footprints, CSRD, and decarbonization strategies, while consolidating my user-centered approach and my mastery of modern stacks (PHP/Symfony, React/TypeScript, modular architecture, API-first...).

Today, I bring this dual tech & business perspective to the Territoires en transitions project within the ADEME incubator. I am also the founder of Communo, an open-source platform for sharing equipment and local mutual aid, born from my conviction that resilience will come from recreating strong links through cooperation and mutual aid at the local level.
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Basic

Can work on-site
Nantes (up to 50km), Paris (up to 30km), Rennes (up to 15km), Bordeaux (up to 10km)

Experience

  • Good Steps
    Lead dev
    ENVIRONMENTAL
    March 2024 - August 2025 (1 year and 5 months)
    Nantes, France
    At GoodSteps, I participated in the development of a CSRD-oriented application, by implementing a modular architecture to manage complex repositories and allow the input of multi-repository indicators.

    I designed and developed several key modules: management of IROs, stakeholder mapping, gap analysis, indicators... I also implemented a granular ACL system to ensure fine-grained security, structured the project with nestjs-query, and equipped the team with Storybook for better front-end scalability.
    NestJs React.js CSRD Carbon Footprint CSR
  • Communo
    Founder - Project Manager
    SOFTWARE PUBLISHING
    January 2022 - Today (4 years and 7 months)
    Nantes, France
    Communo is a non-profit project, under free license, designed to encourage cooperation and mutual aid within our current and future local communities. The vision is to allow any community to access Communo as a common good to simplify sharing and mutual aid within these communities. The goal is to network communities while ensuring absolute decentralization, respect for personal data, and engaging society towards transition starting from the local level. Development and design of the project. API: Symfony + ApiPlatform + GraphQL Front: Typescript, React, ChakraUi CI/CD: gitlab Architecture: hexagonal + DDD + CQRS Conferences: AFUP Nantes, Les écolorés, Web2day 2023, Open Source Experience 2023. Carried out a communication campaign as part of the launch and participatory budget.
    Symfony GraphQL React.js Tech Lead PostgreSQL
  • Toovalu
    CTO
    ENVIRONMENTAL
    June 2021 - February 2024 (2 years and 7 months)
    Nantes, France
    Toovalu is a platform that allows organizations to implement impact strategies, to measure/analyze and define either a low-carbon strategy and align with SBTi trajectories (globally to respect the Paris agreements) or a CSR/CSRD strategy.

    Launch of a transformation project from the monolithic Symfony+twig application to an API+front application (api-platform, graphql, react, typescript, chakra-ui, jwt)
    E2E test policy
    Project orchestration with docker compose and Makefile
    Implementation, maintenance, optimization of a Gitlab-ci CI/CD system
    Awareness and lobbying on the use and creation of free-licensed software
    Awareness and lobbying on the use of the semantic web and the creation of ontologies to standardize climate & CSR impact repositories
    Cybersecurity guarantor
    Technical assistance
    Internal micro-trainings (Agile Scrum, PHP + Symfony, ApiPlatform + graphql, ShapeUp)
    Management of the creation and evolution of the website (Nextjs, Strapi, tailwind)
    Implementation of the ShapeUp method = Creation of a ShapeUp board game to drive change in the company (without ever naming it)
    Implementation of the OBEYA method to boost the product team
    Implementation of "Welcome to the jungle"
    PHP 8 React Typescript API Platform GraphQL

Recommendations

Be the first to recommend Leny

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • MASTER OF SCIENCE
    SUPINFO
    2011

Skill set

Categories