
Pierre PAYET
Fullstack Software Engineer | Node.js, TypeScript
Salaire / Taux journalier
Lyon, France
Mobilité : Lyon
Freelance, ouvert au CDI
Peut venir sur site
Expertises
Langues
À propos
Introduction
Product-oriented fullstack engineer with over 4 years of experience across startup, public sector, media, and SME environments. Specialized in TypeScript and Node.js, I design and build web applications and APIs used at scale, from conception to production maintenance. Self-driven and proactive, with a strong focus on product impact, code quality, best practices, testing, and close collaboration with product and business teams.
Expérience de travail
Fullstack Software Engineer
SanofiFreelance
juin 2026 - Présent
5 mois
Lyon, France
ℹ️ Contexte : I joined Sanofi's "Digital Accelerator" in Lyon, as part of the "GenAir Doc Factory" team. This is a platform for the automated generation of regulatory reports, powered by generative AI. 🏆 Key achievements: • Collaboration within an international team: France, Canada, Spain, India. • Contribution to a demanding technical project: DDD, CQRS, Hexagonal Architecture, CRDT. • Integration of AI into all stages of development (research, design, planning, implementation, PR). ⚙️ Technologies: TypeScript, React, Node.js, Express.js, AWS, GitHub Actions CI, Datadog
Full-Stack Software Engineer
Adtractive GroupFreelance
déc. 2025 - Présent
11 mois
À distance
ℹ️ Context: Client operating several hundred digital advertising screens across France, seeking to integrate an embedded AI module (edge AI) into its screens to dynamically adapt displayed advertisements based on viewer demographics, while collecting anonymized statistics through the existing Cloud platform. 🏆 Key achievements: • Designed the end-to-end technical architecture (Edge AI module communication, Player, RESTful API, AWS Cloud, Web platform) for a dynamic ad targeting system deployed across hundreds of digital screens. • Developed the fullstack AI-driven broadcast logic: real-time preloading, synchronization, configuration interfaces, and statistics endpoints. • Built 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
Full-Stack Software Engineer
Inicio
janv. 2025 - déc. 2025
1 an
À distance
ℹ️ Context: Paris-based startup developing an algorithm to identify high-potential sites for photovoltaic projects through large-scale territorial analysis, and building a SaaS platform used by solar developers across Europe. 🏆 Key achievements: • Developed an interactive map (Mapbox, GeoJSON) for visualizing electrical substations across France, generating strong client enthusiasm. • Led an architectural refactoring of the main product page (frontend & backend), reducing load time from ~4s to near-instant. • Delivered business-oriented fullstack features: integrated chat with notifications (AWS SES), admin dashboard empowering the Sales team to operate autonomously. • Set up monitoring metrics (AWS CloudWatch) and led a Software Craftsmanship book club (TDD, Clean Code). ⚙️ Technologies: TypeScript, Node.js, NestJS, React, Jest, TypeORM, Docker, AWS, JetAdmin, Hexagonal Architecture, monorepo
Full-Stack Software Engineer (Frontend-focused)
Métropole de LyonFreelance
mars 2023 - janv. 2025
1 an 11 mois
Lyon, France
ℹ️ Context: Joined the development team of laclasse.com, a Digital Workspace (ENT) providing educational, collaborative, and communication tools used daily by teachers, students, parents, and non-teaching staff across public schools in the Lyon metropolitan area. 🏆 Key achievements: • Created an App Store-inspired feature catalog, improving discoverability and adoption of tools across schools. • Developed new components for the form builder (multiple-choice grid), enriching teachers' pedagogical capabilities. • Ongoing feature development and bug fixes, with close collaboration with product and design teams. ⚙️ Technologies: TypeScript, Web Components, SQL, PHP, Docker
Euronews
sept. 2021 - déc. 2022
1 an 4 mois
Lyon, France
Full-Stack Software Engineer - Work-Study then Fixed-Term Contract
sept. 2022 - déc. 2022
4 mois
Lyon, France
ℹ️ Context: Pan-European multilingual international news channel broadcasting 24/7. Work-study program followed by a fixed-term contract within the Software Design and Development team, responsible for designing and maintaining internal tools, including the custom-built CMS used by journalists to write and publish articles on the Euronews website. 🏆 Key achievements: • Developed and improved features across internal tools, platforms, and backend APIs in Node.js. • Developed and validated a POC for migrating a local Elasticsearch instance to AWS OpenSearch by adapting backend services, replacing client libraries, and rewriting data connectors, which the team then used to execute the full production migration. • Wrote a Python script for large-scale data migration (≈20 TB) to AWS S3. ⚙️ Technologies: Node.js, TypeScript, Express.js, Angular, Jest, Sequelize, AWS, OpenSearch, SQL, Python
Développeur Web back-end en alternance
sept. 2021 - août 2022
1 an
Lyon, France
Same as above.
Full-Stack Software Engineer — Work-Study
Synergies-Tech
sept. 2020 - août 2021
1 an
69800 Saint-Priest, France
ℹ️ Context: SME specializing in after-sales maintenance of automated mechanical systems, with an internal mobile application enabling field technicians to complete and submit their intervention reports in real time. Sole developer in the company. 🏆 Key achievements: • Improved and maintained a business mobile application with ERP API integration. • Developed and integrated custom modules for the open- source ERP Dolibarr. • System and network administration. ⚙️ Technologies: Vue.js, Sequelize, PHP, Hyper-V, Dolibarr
Formation
EPITECH - European Institute of Technology
Master of Science (MSc) Pro Innovation Technologique (Bac +5), Informatique
2020 - 2022
2 ans 1 mois
Résultat : Bac +5
Network and Security System Architect track, specializing in Cybersecurity (Network and Security System Architect qualification, Level 7 professional certification registered with the RNCP). The training is based on hands-on learning and focused on solving real-world problems, with the support of industry professionals. The program dedicates a significant portion to web development (front-end, back-end, DevOps, etc.) through numerous practical projects.
Université Claude Bernard Lyon 1
Licence 3, Informatique (Bac +3), Informatique
2019 - 2020
1 an 1 mois
Résultat : Bac +3
Training covering: programming, algorithms, databases, web development, networks and computer security.
Université Savoie Mont Blanc
DUT, Réseaux informatiques et Télécommunications (Bac +2), Informatique
2016 - 2018
2 ans 1 mois
Résultat : Bac +2
Training covering: System/network installation and administration, programming, web development, IT security. CCNA 2 certification exam.
Licences et certifications
TOEIC : Score 940/990
Délivré le : févr. 2018