Freelancer profile translated to English.
Back to original languageAbout Pierre
Hello 👋
Product-oriented FullstackDeveloper, I support organizations (startups, local authorities, public services, SaaS) in the design, evolution, and reliability of their web applications.
My background combines experience in startups (Inicio - SaaS product, full remote) and in the public sector (Métropole de Lyon), where I worked on products with high usage, reliability, and maintainability stakes. I work on both backend and frontend, with a particular focus on the quality and sustainability of solutions.
🧠 What I do
-Fullstack Development(TypeScript / Node.js / NestJS / React)
-Maintenance, stabilization, and refactoringof existing products
-Functional improvementsaligned with user needs
-Automated testingand technical quality
-Documentation and best practices
-Clear communicationwith product, design, PO, and client teams
🔧 My strengths
- Ability to work ondiverse codebasesand quickly gain expertise in new technologies
- Sensitivity touser experience**, code quality, and software **reliability
- Experience working **remotely**, with autonomy and organization
- Agile, testing, and documentation culture
- Passion for products withreal impactand significant business value
🎯 What I can bring
Whether for:
- a complete web project
- a progressive redesign
- evolutions and fixes on a product already in production
I easily integrate into a team or work independently to deliver a stable, scalable result aligned with business objectives.
📩 Need a reliable Fullstack developer for your product?
Available forfreelance missions (remote / hybrid)- don't hesitate to contact me to discuss your needs and define an effective collaboration.
📌 pierrepayet.dev
French
Native or bilingual
English
Fluent
Can work on-site
Lyon (up to 10km)
Experience
- Adtractive GroupFull-Stack Software EngineerPRESS AND MEDIADecember 2025 - Today (6 months)Lyon, France
Context:
Client operating several hundred digital advertising screens in France, wishing to integrate an embedded AI module (edge AI) into their screens to dynamically adapt displayed advertisements based on viewer demographics, while collecting anonymized statistics via the existing Cloud platform.Missions:
- Design of the end-to-end technical architecture (communication with Edge AI module, Player, RESTful API, AWS Cloud, Web platform) for a dynamic advertising targeting system deployed on hundreds of digital screens.- Fullstack development of AI-driven distribution logic: real-time preloading, synchronization, configuration interfaces, and statistical endpoints. Implementation of an anonymized demographic data pipeline (edge to Cloud) with a performance dashboard and a robust fallback system ensuring broadcast continuity.Technologies:
React, Node.js, Express.js, RESTful API, MariaDB, Sequelize, AWS, Jest, Electron, Raspberry PI - InicioFull-Stack Software EngineerENERGY AND UTILITIESJanuary 2025 - December 2025 (11 months)Lyon, France
Context:
Within the Web team of thestartupInicio, design and development of aSaaS productfor renewable energy developers in Europe, with the mission to accelerate the energy transition. Objective: to facilitate the deployment of solar projects in France and internationally.Missions:
- Writing and reviewingtechnical designdocuments.-End-to-end development of new featuresfor the SaaS product: frontend (React) and backend (NestJS).-Managing technical debtof the Web project: tracking, prioritization, and continuous resolution throughout sprints.- **Handling bugs**: in-depth analysis, resolution, and presentation of findings to the team.-Monitoring and improving key KPIsof the Web project: stability, scalability, security, performance, and developer experience simplicity/quality (DevX).-Implementing AWS metrics and alerts(CloudWatch) for precise and proactive monitoring of the Web project.-Proposing ideasto improve the product and meet business needs: regular discussions, understanding challenges, and contributing to product directions.-Participation and facilitation(rotating role) of team rituals: daily meetings, sprint planning & review, retrospectives, architecture discussions, bug reviews, KPI tracking.- Organizing a reading club around the book “Software Craft: TDD, Clean Code, and other essential practices”: a weekly session dedicated to sharing and exchanging best practices.Technos & methods:
NestJS, React, Jest, TypeORM, Docker, AWS, Cursor, hexagonal architecture, mono-repo, agile methodology - Métropole de Lyon
On Malt
Web DeveloperPUBLIC SECTORMarch 2023 - January 2025 (1 year and 9 months)Lyon, FranceContext:
Joined the development team of laclasse.com, an Educational Digital Workspace (ENT) providing pedagogical, collaborative, and communication tools used daily by teachers, students, parents, and non-teaching staff in public institutions in the Lyon metropolitan area.Missions:
- Creation of a feature catalog inspired by the App Store, improving the discoverability and adoption of tools within educational institutions. Development of new components for the form generator (multiple-choice grid), enriching teachers' pedagogical possibilities.- Evolutionary and corrective maintenance, and close collaboration with product and design teams.Technologies:
TypeScript, Web Components, SQL, PHP, Docker
Reviews
B
Boris
Klee Conseil et Intégration
Reviewed on 11/10/2023
Very satisfied with the mission carried out with Pierre. He integrated well into the agile team, took ownership of this complex project (multi-technology, heavy deployment, production system with thousands of daily users), completed his developments by asking relevant questions and with a very high level of quality. I recommend Pierre for your missions.
Tao
TAO GASNIER
Reviewed on 1/25/2022
Pierre is the full-stack developer we dream of having for our project.
He delivered an excellent performance developing a Chrome extension, a MongoDB database server, and a REST API.
Pierre's code is clean and well-commented; he is committed to seeing things through and adapting to changes in direction. 🙌
Thank you Pierre for your professionalism and commitment.
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Education
- Master of Science (MSc) Pro Innovation Technologique (Bac +5) - Work-Study ProgramEPITECH - European Institute of Technology2022Parcours Architecte Système Réseau et Sécurité, spécialité Cybersécurité (Titre d'Architecte système réseau et sécurité, certification professionnelle de niveau 7 enregistrée au RNCP). La formation est basée sur un enseignement pratique et axé sur la résolution de problèmes réels, avec l'aide de professionnels de l'industrie. Le programme consacre une part importante au développement web (front-end, back-end, devops...) à travers de nombreux projets pratique.
- Bachelor's Degree in Computer Science (Level 6)Université Claude Bernard Lyon 12020Formation théorique et pratique généraliste en informatique, le programme consacre une part importante aux outils de base du développement de logiciels et aux technologies d'internet. La formation couvre différents domaines de l'informatique, tels que la programmation, l'algorithmique, les bases de données, le développement web, le réseau, la sécurité informatique...