Jean-Luc Robert
Full Stack Developer @ Echosens
About
I'm a passionate full‑stack JavaScript engineer from Paris with 10 years of experience. I'm an independent developer with over 7 years of experience as a micro‑entrepreneur and a SASU, now I help startups and SMEs to create efficient web apps with React and Node JS. My core strengths: - Client‑focused execution: deploying customer‑centric large‑scale application with demonstrable results. - Technical: modern front‑end (React, Next, Redux/Context, Tailwind, Material UI, CSS 3), back‑end APIs (Node JS, Express, Nest JS, PostgreSQL, GraphQL), and DevOps fundamentals (CI/CD, Docker, AWS). - Problem solver: optimizing performance, improving UX, securing APIs, and making complex features easy to maintain using advanced design patterns. I have successfully done projects such a web platform which has improved customer engagement by 30% in 8 weeks, a complete rewrite of a huge legacy app within 2 weeks, an MVP SaaS (software as a service) enabling users to easily track and manage tasks through devices and more. When I am not coding, I continue studying new tech trends and team management. Let’s work together! If you’re in need of a freelance full‑stack developer who can provide quality web and mobile solutions, don’t hesitate to contact me.
France
Paris
Computer Software
PostgreSQL, Engineering, REST APIs, Scratch, Express.js, Programmation orientée objet (POO), Next.js, Ingénierie produit, Conception pilotée par le domaine, Logiciel en tant que Service (SaaS), Web Development, NestJS, Web Applications, Presentations, Design, Interfaces, Machine Learning, Microservices, Jira, JavaScript Frameworks
Experience

Full Stack Developer
Ville de Paris, Île-de-France, France
At Echosens, leader of the Liver health management examination, that sells the FibroScan (a Liver health management hardware and software). In the cloud team constituted of 10 full Stack developers, 2 cloud architects and 3 testers we improve the B2B app of Echosens that allows the users to manage FibroScan exams of their patients and provides various kind of health scores. I was in charge of rewriting the full LHM (Liver Health Management) app from Javascript to Typescript, improving the performance of the UX/UI and fixing bug on AWS Lambda. I also built their new app LHR (Liver Health Management Research), and it's admin Dashboard from scratch using the latest best practices and clean code architecture.

Senior Full Stack Developper
Ville de Paris, Île-de-France, France
As a Fullstack developer (Node js and React js) in Agile method in the Fullstack team, we aimed to meet the growing challenge of data visualization by combining performance and ease of use. My mission was to assist the existing team on the castor web app by adding features, improving data management and global performance.

Lead full stack developper
Paris, Île-de-France, France
Back on the ministry on request, team of 4 developers in an agile scrum environment. My major tasks was: - The evolution of the core application for the cross border controls equiped in all the french airports. - The training of the developers of the new major version of the React JS technology (v16.8). - The creation of a new app for the management of statistics of the data linked to the cross border traffic (using Python).

Senior Frontend Developer
Paris, Île-de-France, France
At Ermes (Redpill Group), creation of the Ermes application (management of advertising strategy for major accounts based on AI). Scrum methodology, team of 10 developers (4 back-end and 6 front-end). Tasks: - Design and architecture of front-end application - React JS training and best practices - Data connector calculations and management (AI) - Performance management - Diagram design - JWT authentication - Funnel management. - Training of the trainees (on react js technology)

Senior Frontend Developer
Région de Paris, France
Redesign of the border control app (used in all French airports). Team of 4 developers. Scrum methodology. Tasks: React training, best practices training, advanced image processing, browser history management, interfacing with Web services, design and refinement of graphic charter, documentation. TDD, React, Redux, Websocket, HTML5 workers.

Frontend Developer
Région de Paris, France
Media sector, development of the french main journalists' dashboard (B2B). In a team of 4 developers (team "bone", Scrum methodology), I added some features (infinite scroll), fixed some bugs and improved performance (the app loaded 20% faster after my work).

Frontend Web Developer
CrossQuantum
Région de Paris, France
Banking sector (Swiss Life), mobile application development that provides banking management tools to the end users (B2C). Team of five developers, Scrum methodology. I added some features to the app (style and performance optimization on IOS and Android, an interactive banner that demonstrates the latest feature to the users, new menu integration).

Javascript Developer
Paris Area, France
At French Bureau (now Possible Future) the purpose was to create a MVP of a Real estate architecture collaboration SaaS. In a team of 2 freelance developers, I was in charge of the the backend development, and then a Fullstack JS developer (learning the use of React JS). Implementation of the rest API, in Node with Hapi: - Installation and configuration of the remote database with Mongoose. - Set up unit tests with Swagger (and Joi). - Creation of various services (Authentication via JWT, mails with Sendgrid, errors management). - Configure routes and models. Interventions in the front-end application, using React (and Redux): - Communication with the Api via Smalldots and Axios. - Implementation of the MapBox GL library (drawings and constructions on the Google map) - Implementation of the various stages in the creation of user story architectures (via states).

PHP Developer
Région de Paris, France
As a PHP developer in a team of 5 developers, I worked on the main website of atelier des chefs, dealing with high stakes in terms of user interaction and experience (UX, UI), and performance (B2C, 5 millions of unique visitors per month) in close collaboration with the art director (pixel perfect implementation). Some of the main tasks carried out: - Creation of new home page. - SEO optimizations (Rich Snippet, JS performance optimizations, etc.). - Dematerialization of the gift card (e-gift card) for the christmas period that has double the usual income of this period. - Creation of corporate partnership pages.

PHP Developer
Région de Paris, France
Full Stack developer PHP/JS at NSens, working as a junior developer in this computer engineering service company. In a team of 3 developers, I contributed to create B2C apps for individuals and enterprises specialized in E-commerce, real estate investment, real-time collaboration tools. Worked on: https://www.meilleurescpi.com/ https://www.beaute-futee.com/
Jean-Luc Robert's Contact Information
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