About William
Need a reliable full-stack developer to build your web product, hassle-free?
- Complete Full-stack: React/Vue, Node.js/Ruby on Rails, PostgreSQL/MySQL/MongoDB, Kubernetes
- Product Experience: I've launched several personal SaaS projects (data platform, link-in-bio, directory). I understand business challenges, not just code.
- Fast Delivery: I enjoy working in short cycles, with intermediate versions for validation.
- Clear Communication: Everything is done in writing (messages, tickets, documentation), for perfect traceability.
- High-converting landing pages + admin backoffice
- SaaS MVP (auth, dashboard, payments, API)
- Third-party API and data system integrations
- Refactoring and modernization of existing applications
- Infrastructure deployment and configuration (DevOps)
French
Native or bilingual
Portuguese
Native or bilingual
English
Fluent
Experience
- Direction générale des finances publiquesFull-stack DeveloperPUBLIC SECTORMarch 2023 - November 2025 (2 years and 8 months)Paris, FranceDuring my 2 years at DGFiP, I worked on a web-builder using VueJS, GrapesJS, and NodeJS for the DTNum. My responsibilities included:
- Front-end development in VueJS / GrapesJS and back-end (Node.js / Prisma, Socket.io, PostgreSQL) of the platform
- Ensuring compliance with the portal's and editor's accessibility rules
- End-to-end design of the application architecture
- Collaborating with the development team, the infrastructure team, UX designers, and the project owner to ensure platform consistency
- Handling Ops on Cloud Nubo (Ansible, Terraform, OpenStack)
- Organizing and leading technical meetings with the team
- ChronotruckFront-end DeveloperTRANSPORTATIONJune 2018 - December 2022 (4 years and 6 months)Paris, FranceWhen I joined Chronotruck, I was responsible for a VueJS SPA in collaboration with another front-end developer, a few back-end developers, and a product team. We developed our features using agile methodologies, applied fixes with the help of Sentry, and utilized our advanced testing stack (Vitest, Puppeteer, Nightwatch, BrowserStack).I had the opportunity to implement our CI/CD pipeline with CircleCI and then Github Action. DevOps tasks were also performed to improve our Capistrano deployments, Docker images, and the development of Terraform/Ansible scripts.During my 4 years, I mentored front-end interns, collaborated with new front-end developers, and worked with external teams on new projects.
- My CuistotFull-stack DeveloperRESTAURANTS AND FOOD SERVICEJune 2016 - June 2018 (2 years)Paris, FranceJoining a team of 3 developers, I was in charge of continuing the design of the backend architecture for the platform in Ruby on Rails.Later, I had the opportunity to work on the platform's Android and iOS application using AngularJS & Ionic. This mobile application would later be rewritten in React Native.In addition, I designed the interface on Figma in collaboration with the product team and integrated the new platform in VueJS/Nuxt, partly using VueMaterial and then Vuetify.
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Education
- BaccalaureateLycée Albert Schweitzer2016Baccalauréat