Freelancer profile translated to English.
Back to original languageAbout Kevin
Front-end Developer specialized in React, Next.js, and TypeScript, with 5 years of experience in designing, redesigning, and developing modern web applications. I work on highly complex front-end projects, with a solid mastery of architecture, state management, API integrations, and best practices for quality and performance.
I have worked in demanding environments (aerospace, energy, health), where I have redesigned critical applications, built complete subscription journeys, developed B2B/B2C sales funnels, modernized legacy interfaces, and created operational back-offices used daily by business teams.
My recent missions include:
– Complete migration of an aerospace application to React/TypeScript, UI modernization, and legacy code audit.
– Development of B2B applications for energy sales: sales funnel, broker/client portals, OpenAPI integration, advanced state management (Redux, Zustand).
– Creation of a B2C application ecosystem: back-office, client portal, standalone sales funnel.
– Design of comprehensive business tools (pricer, offer creation, HR management, moderation) as a freelancer.
I work with a structured approach: understanding the need, designing interfaces, building a maintainable front-end architecture, clean API integration, rigor on code quality, and iterative deliveries.
Accustomed to close collaboration with POs, designers, and backend teams, I ensure to provide a clear, reliable, and scalable front-end, designed for both the end-user and the teams who will evolve the tool.
French
Native or bilingual
English
Fluent
Can work on-site
Rennes (up to 50km), Paris (up to 50km), Lyon (up to 50km), Nantes (up to 50km), Bordeaux (up to 50km)
Experience
- ExailReact Front-end DeveloperDEFENSE AND MILITARYJanuary 2024 - January 2025 (1 year)Rennes, France→ Mission Objective:Modernize a critical license management application in the aerospace sector, ensuring compliance and performance.→ Achievements:Front-end migration to React + TypeScript, reducing bugs and ensuring a robust and scalable codebase.UX/UI redesign based on Figma, improving user experience in a multi-site and multi-language context.Technical compliance with industry standards through Agile integration (Jira) and CI/CD (GitLab, Jenkins), reducing regulatory risks.→ Technical Stack:React, TypeScript, Figma, Jira, GitLab CI, Jenkins
- Primeo EnergieReact Front-end DeveloperENERGY AND UTILITIESJanuary 2022 - January 2024 (2 years)Rennes, France→ Mission Objective:Develop B2C applications to digitize customer relations in the energy sector and optimize sales funnels.→ Achievements:Creation of a responsive client portal with an optimized sales funnel, boosting conversion rates and user engagement.Development of MegaPricer, a dynamic pricing tool in React/TypeScript connected to OpenAPI APIs, reducing commercial processing time.Figma integration, Agile management via Jira, and CI/CD deployment (GitLab, Jenkins, Docker), ensuring code quality and rapid time-to-market.→ Technical Stack:React, TypeScript, Redux, Figma, Jira, GitLab CI, Jenkins, Docker
- MBA MutuelleReact Front-end DeveloperBANKING AND INSURANCEJanuary 2021 - January 2022 (1 year)Rennes, France→ Mission Objective:Digitize the health insurance subscription process to improve customer acquisition and automate contract management.→ Achievements:Development of the subscription funnel in ReactJS/TypeScript, with complex business logic for quotes, contracts, and electronic signatures.Figma integration and adaptation of the front-end architecture according to business use cases, ensuring a fluid and reliable UX.Compliance with health/mutual insurance regulatory requirements, through advanced front-end controls and cross-functional collaboration.→ Technical Stack:ReactJS, TypeScript, Redux, SCSS, Figma, Git
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Education
- Application Developer Designer React.jsO'clock2020Développement d'interface Front End (React.js, Typescript, Javascript, TailwindCSS, Shadcn)
- Web and Mobile Web Developer3WAcademy2019Développement d'interface Front End (HTML5, CSS3, Javascript), Développement Back End (PHP, SQL)