Freelancer profile translated to English.
Back to original languageAbout Jérôme
Full-Stack Engineer with over 14 years of professional experience, specializing in backend engineering and end-to-end web deployment. With deep expertise in NestJS and PostgreSQL, I master the entire technical chain, from frontend (Vue.js) to CI/CD pipelines and REST APIs, while integrating artificial intelligence into my workflow to optimize code quality and accelerate delivery cycles.
My background allows me to bridge technical excellence and business strategy, a duality exemplified by my role as Founder & CTO of FitHere. There, I designed and fully developed a sports community management platform, demonstrating my ability to drive a complex product from initial conception to market launch.
French
Native or bilingual
English
Native or bilingual
German
Basic
Chinese
Basic
Remote only
Primarily works remotely
Experience
- FitHereFounder and CTOSPORTSNovember 2024 - Today (1 year and 9 months)A dual-faceted sports platform: a community product enabling organizers to create events and develop local sports ecosystems based on a "city + sport" model, and a Workspace solution helping companies deploy, manage, and measure their corporate sports initiatives through dedicated KPI dashboards.PRODUCT & BUSINESSDefined product vision, roadmap, and go-to-market strategy; prepared pitch deck and led discussions with investors.Acquired first users and designed the initial sales funnel and conversion strategy.Collaborated with Product and Design teams to translate user needs into technical specifications.Designed and developed the entire scalable Nx monorepo, enabling the deployment of five applications in production from a single, shared codebase: a public website (Astro), a mobile-first web application (Vue.js 3 + Capacitor), a REST API (NestJS), an administrator dashboard, and an asynchronous worker for background tasks (BullMQ + Redis).KEY ACHIEVEMENTSArchitected a multi-platform monorepo with full code sharing between applications and libraries (types, UI, translations, utilities).Developed a secure authentication system based on JWT tokens (HttpOnly cookies), with token renewal (refresh token) and Firebase Auth integration.Designed a real-time notification pipeline (in-app, email, and push) with batching, deliverability tracking, and user preferences.Developed a community and event management system with participant registration, team composition tracking, and alerts for organizers.Implemented CI/CD with Docker, automated database migrations (Prisma), and managed secrets via Doppler.
- ITDM GroupBackend DeveloperAugust 2023 - November 2024 (1 year and 3 months)Served as one of the main backend developers on a full-scale ERP platform covering logistics, HR, construction site management, invoicing, and the full supplier/customer/employee/vehicle lifecycle.Architected the entire database schema and data model to support a complex, multi-domain business applicationEngineered 50+ NestJS modules — including entities, DTOs, resolvers, and services — following clean architecture principles throughoutDesigned and implemented all GraphQL queries, mutations, and input types, providing a consistent and efficient API contract for frontend consumersActed as the primary API contract owner, collaborating closely with frontend developers to shape and adapt backend responses to UI requirementsConducted code reviews on peer merge requests, enforcing code quality standards and architectural consistency across the teamDrove backend refactoring initiatives, leading dedicated meetings to align the team on technical debt reduction and structural improvementsNestJS GraphQL PostgreSQL TypeScript
- TrustyFullstack Software EngineerApril 2022 - May 2023 (1 year and 1 month)Contributed to the conception and development of a new HR recruitment platform from the ground up, spanning database design, API architecture, and a reactive frontend interface for company administrators.Designed and implemented the full MongoDB database architecture, defining all schemas to support the recruitment domain's data modelBuilt a RESTful Node.js/Express API serving as the communication layer between the backend and frontend applicationsDeveloped a reactive administration interface for client companies using Meteor and Vue.js, handling both backend logic and frontend renderingOwned end-to-end delivery across the full stack, from data layer through to user-facing featuresMongoDB Node.js Express.js Meteor Vue.js
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Education
- Master 2 Management and Strategy of Information SystemsIAE Lyon2010
Certifications
- Google Analytics CertificationGoogle Academy2017
- WordPress DeveloperOpenClassrooms2015