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Lucas TostéeLT

Lucas Tostée

Web Developer - Typescript | Node.Js / React.Js

€500/day
4 projects
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Lucas

Hello,

🚀 Passionate about programming, I am a follower of the agile method and I have strong expertise in web development, specifically SAAS (Software As A Service).

🌟 Varied experiences:
- With over 5 years of experience, working in both small structures and large groups like Prestashop (400k+ users)
- I have mostly worked in an agile methodology, adding features in close collaboration with UI/UX teams and resolving bugs.

💼 Flagship projects:
- Creation of SAAS for bank account management (front-end: ReactJs and NextJs, back-end: Strapi on Heroku) comprising several thousand users,
- Mobile application that lists available parking spaces nearby. This project is close to my heart because it saves time for car owners, I use the technologies (React Native, NodeJs, AWS).

🎨 Open Source Contribution:
- Active in the JS community by contributing to open source projects and creating various tools, here is a list of the different NPM packages I have created,
🔧 Technical skills:
- Mastered languages and frameworks: ReactJs, NodeJs, Typescript, NextJs
- CI/CD expertise with GitHub Actions, containerization with Docker, and AWS configurations (S3, CloudFront, Lambda, DynamoDB, ElasticCache, EC2, ECS...)

🚀 My goal: To produce readable and maintainable code to offer real added value to users.

💬 I am available for the creation and improvement of websites and web applications.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 10km)

Experience

  • Linxea
    Full Stack Developer
    BANKING AND INSURANCE
    March 2026 - May 2026 (2 months)
    Paris, France
    Context:

    Leading a complete technical migration for a large company, transforming a legacy monolithic architecture into a modern decoupled stack combining a headless CMS and a modern frontend.

    **Scope**: Architecture and implementation of a headless CMS solution with Strapi coupled with a Next.js frontend, replacing a tightly coupled monolith suffering from scalability and deployment constraints.



    **Technical Implementation**:

    - Design of content models and configuration of REST/GraphQL APIs in Strapi
    - Building a Next.js application with optimized rendering strategies (SSR, SSG, ISR)
    - Establishment of decoupled deployment pipelines enabling independent iteration of backend and frontend
    - Implementation of robust data fetching patterns and caching strategies

    **Key Results**:

    - Significant performance gains: Faster TTFB, improved response times through static generation and ISR
    - Enhanced scalability: Independent horizontal scaling of CMS and frontend services
    - Improved developer velocity: Clear separation of concerns facilitating parallel workflows
    - Accelerated deployment cycles: Granular builds vs. monolithic deployments

    **Technologies**: Strapi, Next.js, Node.js, REST/GraphQL APIs, React



    **Duration**: 2 months
    Strapi Next.js Microsoft Azure Node.js React.js
  • Localista
    SAAS Development
    TELECOMMUNICATIONS
    January 2025 - May 2025 (4 months)
    Paris, France
    Context:

    Intervention on an application requiring the addition of new features and bug fixing.

    Main Missions:
    1. Development of New Features:
    ▪ Integration of Customer Relationship Management (CRM) systems.
    ▪ Implementation of features to push and retrieve data from the CRM.
    2. Bug Fixing:
    ▪ Identification and resolution of various bugs to improve application stability and performance.
    Technical Stack:
    • RemixJS: Used for front-end development and route management.
    • PostgreSQL: Relational database for data management and storage.
    This mission helped improve the application's efficiency while ensuring better integration with CRM systems.
    React.js PostgreSQL GitHub Actions RemixJs
  • BiM Cloisons
    Software Engineer
    CIVIL ENGINEERING
    July 2024 - October 2024 (3 months)
    Paris, France
    Context:

    Working at BIM Cloissons, a company specializing in SaaS solutions for the construction sector, focusing on adding new features and fixing bugs on their platform.

    Main Missions:

    1. Development of New Features:
    ▪ Integration of features for optimized management of construction projects.
    ▪ Implementation of reporting and data analysis systems to improve decision-making.

    2. Bug Fixing:

    ▪ Identification and resolution of various bugs to improve application stability and performance.
    ▪ Performing functional tests to ensure the quality of the final product.

    Technical Stack:
    . RemixJS: Used for front-end development and route management, providing a fluid user experience
    •ReactJS: Used for front-end development and creating dynamic user interfaces.
    •Node.js: Framework for back-end development, used for managing requests and services.
    •PostgreSQL: Relational database used for data management and storage.

    This mission helped improve the platform's efficiency while ensuring a better user experience and seamless integration with project management systems.
    Fullstack API React.js Remix

Reviews

4.1

Out of 4 ratings

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Reviewed on 5/11/2020

We asked Lucas to build our web application. Everything went well, Lucas was available to discuss the project, he has the skills and delivered the expected work! I highly recommend him!
FlorianF

Florian

Florian Richard

Reviewed on 9/22/2018

First part of an integration mission for my personal website. Lucas is very understanding, very responsive to requests, and very competent! This first part of the mission fully meets my expectations. He is also very flexible and accommodating, and always offers additional insights that go beyond the initial request (SEO, help with going live, etc.).

Recommendations

YD
Lucien GeorgeLG
Julie S.JS
+2
Yoann Delpierre and 4 other people have recommended Lucas

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Education

  • Master of Web Programming
    ECV Digital
    2022
    L'ECV Digital est une école qui prépare au diplôme de chef de projet digital, durant mes années à l'ECV j'ai abordé les différents angles du web que ce soit le web-marketing (SEO, SEA), le web-design (Sketch, suite Adobe), et notamment le web-développement dans lequel j'ai décidé de me spécialiser en tant que développeur front-end (HTML5, CSS3, JavaScript, Jquery, React).
  • The Fundamentals of JavaScript
    Linkedin Learning
    2017
    Aprés avoir apprit HTML5 et CSS3, je décide de contnuer ma formation en apprenant un des langages les plus utilisés sur le web JavaScript.

Certifications

  • Web Programming
    ECV Digital Paris
    2021
    Algorithm Software Front-End Development Back-End Development Fullstack Web Development

Skill set

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