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I'm Fabien, a Senior Front-End / Full-Stack Engineer with 7+ years of experience building stable and scalable web and mobile applications for enterprises and startups. I specialize in React, Next.js, and TypeScript, and I thrive in international teams delivering reliable, maintainable features and modern front-end architectures. I'm passionate about AI/LLM tool integration, CI/CD, monorepos, and shared UI libraries, with a focus on performance and quality. I speak English, French, Malagasy, and work on my Japanese, and I'm currently based in Tokyo.…I'm Fabien, a Senior Front-End / Full-Stack Engineer with 7+ years of experience building stable and scalable web and mobile applications for enterprises and startups. I specialize in React, Next.js, and TypeScript, and I thrive in international teams delivering reliable, maintainable features and modern front-end architectures. I'm passionate about AI/LLM tool integration, CI/CD, monorepos, and shared UI libraries, with a focus on performance and quality. I speak English, French, Malagasy, and work on my Japanese, and I'm currently based in Tokyo.

Fabien Rajaonarison

Full Stack Developer, Front-End Developer, Web Developer, +2

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I'm Fabien, a Senior Front-End / Full-Stack Engineer with 7+ years of experience building stable and scalable web and mobile applications for enterprises and startups. I specialize in React, Next.js, and TypeScript, and I thrive in international teams delivering reliable, maintainable features and modern front-end architectures. I'm passionate about AI/LLM tool integration, CI/CD, monorepos, and shared UI libraries, with a focus on performance and quality. I speak English, French, Malagasy, and work on my Japanese, and I'm currently based in Tokyo.…I'm Fabien, a Senior Front-End / Full-Stack Engineer with 7+ years of experience building stable and scalable web and mobile applications for enterprises and startups. I specialize in React, Next.js, and TypeScript, and I thrive in international teams delivering reliable, maintainable features and modern front-end architectures. I'm passionate about AI/LLM tool integration, CI/CD, monorepos, and shared UI libraries, with a focus on performance and quality. I speak English, French, Malagasy, and work on my Japanese, and I'm currently based in Tokyo.

Available to hire

I’m Fabien, a Senior Front-End / Full-Stack Engineer with 7+ years of experience building stable and scalable web and mobile applications for enterprises and startups. I specialize in React, Next.js, and TypeScript, and I thrive in international teams delivering reliable, maintainable features and modern front-end architectures.

I’m passionate about AI/LLM tool integration, CI/CD, monorepos, and shared UI libraries, with a focus on performance and quality. I speak English, French, Malagasy, and work on my Japanese, and I’m currently based in Tokyo.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

French

Fluent

Malagasy

Fluent

Japanese

Intermediate

Work Experience

Full-Stack Engineer at Voy Travel

July 1, 2025 - Present

Developed hotel search, details, filters, and a conversational booking flow in React Native (Expo). Integrated structured LLM tool calls using Zod + TRPC. Added Redis caching and improved performance and stability across mobile platforms.

Founder and Senior Software Engineer at Naina Consulting

January 1, 2019 - Present

Founded Naina Consulting and developed 10+ production web applications using React, Next.js, and TypeScript. Built full-stack features with Node.js, TRPC, PostgreSQL, Redis, and Zod. Set up monorepos, shared UI libraries, CI/CD pipelines, and automated QA workflows.

Full-Stack Developer at Yomiwa

February 1, 2025 - May 1, 2025

Rebuilt a multilingual web application using Next.js/TypeScript. Implemented Japanese word/kanji search, caching, SSR, SEO improvements, and responsive UI.

Full-Stack Developer at Warner Bros. Discovery (Eurosport.com)

July 1, 2019 - March 1, 2024

Developed new features for a high-traffic sports platform. Improved rendering, bundling, and CI workflows. Built GraphQL server/client and assisted with interviews, code reviews, and major refactoring.

Full-Stack Developer at Allianz Trade

January 1, 2022 - Present

Built new case-management features and refactored legacy code.

Software Developer at Accenture

January 1, 2019 - Present

Vue/Nuxt development, reusable UI components, Cypress E2E testing.

Software Developer at Ignition Program

January 1, 2018 - December 31, 2019

SPA development in Vue/Nuxt and legacy Angular improvements.

Software Developer at IBM

January 1, 2018 - December 31, 2018

Built AI/AR proof-of-concepts and supported multiple POCs.