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Tristan WagnerTW

Tristan Wagner

Supermalter

Senior Full-Stack Software Engineer

€600/day
3 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Tristan

Senior Full-Stack Software Engineer with 10 years of experience, specializing in React, TypeScript, Node.js, Go, cloud, CI/CD, web performance, and product integration. I also hold a CII accreditation.

I undertake end-to-end missions: understanding business needs, technical scoping, architecture, frontend/backend development, cloud integration, testing, deployment, monitoring, and continuous improvement.

Recently, I worked on integrating products into the OVHCloud control panel, with one product achieving a Web Vitals score of 96 in production. I have also worked on business automation, AI/LLM integration, design systems, frontend migration, authentication, CI/CD, and optimizing existing applications.

I am comfortable working with product, tech, and business teams. I like to understand the real need before proposing a solution, and I can act as a senior hands-on developer or as a more cross-functional profile between product, architecture, and execution.

I work fluently in English and have experience in several international environments. I am looking for occasional, part-time, or full-time missions, ideally remote, with the possibility of hybrid/on-site depending on the location.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Japanese

    Basic

Remote only
Primarily works remotely

Experience

  • Freelance
    Senior Fullstack Software Engineer
    TECH
    March 2022 - Today (4 years and 3 months)
    Paris, France
    Freelance fullstack, frontend, cloud, and automation missions.

    - Development of fullstack web applications for SaaS, cloud, social media, and SME clients
    - Technical scoping, understanding business needs, and end-to-end delivery
    - Creation of high-performance static sites with Astro, achieving PageSpeed scores of 100/100
    - Automation of business workflows, AI/LLM integrations, and CI/CD optimization
    - Frontend development with React/TypeScript, backend development with Node.js/Go, and cloud deployments
    - Bug bounty, web pentesting, and application vulnerability research
    Astro.js Typescript React.js VueJS Artificial Intelligence
  • OVHcloud
    Senior Fullstack Software Engineer
    TECH
    September 2024 - June 2025 (9 months)
    Roubaix, France
    Product integration mission within OVHCloud Manager, OVHCloud's client control panel.

    - Full-time contribution to OVHCloud Manager
    - Design and development of web applications in TypeScript, React, and TanStack
    - Development and deployment of a new product achieving a Web Vitals score of 96
    - Frontend integration of products into the OVHCloud control panel
    - Maintenance and evolution of legacy AngularJS applications
    - Application run: problem identification, app and bundle optimization using Sentry
    - Backend development in Go on BFF services
    - End-to-end testing, code reviews, and participation in deployments

    Mission recommended by the Head of Product Unit Collaborative Solutions, particularly for frontend integration quality, product/UX improvement suggestions, rapid adaptation, and collaboration with product teams.
    React.js AngularJS TanStack Query Typescript Golang
  • MyM
    Fullstack Software Engineer
    SOCIAL NETWORKS
    September 2022 - February 2023 (5 months)
    Paris, France
    Frontend/fullstack mission on a high-traffic social media platform.

    - Bug fixing and new feature development on a legacy Symfony, JavaScript, and jQuery application
    - Frontend migration from a Vue.js stack to React, TypeScript, Turborepo, and Storybook
    - Design and implementation of a design system from scratch
    - Participation in backend migration to Go, microservices, and DevOps infrastructure
    - Implementation of a cross-platform web/mobile authentication system with OAuth and AWS Cognito
    - Collaboration with product/design teams via Figma
    - Code reviews and continuous improvement of frontend quality
    Typescript Storybook React.js VueJS Symfony

Reviews

5.0

Out of 2 ratings

A

Alberte

OVH Cloud

Several weeks project

-

Reviewed on 6/6/2025

A

Alberte

OVH Cloud

Reviewed on 5/27/2025

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Education

  • Google Mobile Web Specialist Certification, Développement Web
    Udacity
    2018
    Google Mobile Web Specialist Certification, Développement Web
  • Licence, Conception et développement d'applications mobiles
    Institut Méditerranéen d'Etude et Recherche en Informatique et Robotique (IMERIR)
    2017
    Licence, Conception et développement d'applications mobiles

Skill set

Categories