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Hi, I'm Josselin, a front-end developer with over 5 years of experience specializing in React, Next.js, and TypeScript. I love turning design mockups into pixel-perfect interfaces and improving user experiences with optimized web applications. Working in agile teams and across various cloud platforms gives me the opportunity to grow and deliver impactful projects. I have worked remotely with clients in the public sector, music industry, and banking, always eager to learn new technologies and take on challenging projects. When I'm not coding, you'll find me collecting watches or training in boxing and Jiu Jitsu.…Hi, I'm Josselin, a front-end developer with over 5 years of experience specializing in React, Next.js, and TypeScript. I love turning design mockups into pixel-perfect interfaces and improving user experiences with optimized web applications. Working in agile teams and across various cloud platforms gives me the opportunity to grow and deliver impactful projects. I have worked remotely with clients in the public sector, music industry, and banking, always eager to learn new technologies and take on challenging projects. When I'm not coding, you'll find me collecting watches or training in boxing and Jiu Jitsu.

Josselin Caër

Front-End Developer, Developer, Programmer, +1

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Hi, I'm Josselin, a front-end developer with over 5 years of experience specializing in React, Next.js, and TypeScript. I love turning design mockups into pixel-perfect interfaces and improving user experiences with optimized web applications. Working in agile teams and across various cloud platforms gives me the opportunity to grow and deliver impactful projects. I have worked remotely with clients in the public sector, music industry, and banking, always eager to learn new technologies and take on challenging projects. When I'm not coding, you'll find me collecting watches or training in boxing and Jiu Jitsu.…Hi, I'm Josselin, a front-end developer with over 5 years of experience specializing in React, Next.js, and TypeScript. I love turning design mockups into pixel-perfect interfaces and improving user experiences with optimized web applications. Working in agile teams and across various cloud platforms gives me the opportunity to grow and deliver impactful projects. I have worked remotely with clients in the public sector, music industry, and banking, always eager to learn new technologies and take on challenging projects. When I'm not coding, you'll find me collecting watches or training in boxing and Jiu Jitsu.

Available to hire

Hi, I’m Josselin, a front-end developer with over 5 years of experience specializing in React, Next.js, and TypeScript. I love turning design mockups into pixel-perfect interfaces and improving user experiences with optimized web applications. Working in agile teams and across various cloud platforms gives me the opportunity to grow and deliver impactful projects.

I have worked remotely with clients in the public sector, music industry, and banking, always eager to learn new technologies and take on challenging projects. When I’m not coding, you’ll find me collecting watches or training in boxing and Jiu Jitsu.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

French

Fluent

Spanish; Castilian

Advanced

English

Advanced

Portuguese

Advanced

Work Experience

Front-end developer at Publidata.io

October 31, 2024 - July 23, 2025

Developed new React components to extend functionality, resolve technical issues, and enhance user experience. Conducted thorough code reviews and maintained a robust Storybook library with clear documentation. Managed and updated Node packages to ensure stability and compatibility across the project. Collaborated within a distributed team environment, with strong communication and agile workflows. Designed user-focused solutions that supported eco-friendly initiatives, including recycling and sustainability efforts.

Fullstack developer at Quebra.co

March 1, 2023 - Present

Developed and launched a user-authenticated music-sharing website, enabling users to upload and share their music seamlessly. Implemented a headless CMS (Sanity) to manage and display content. Employed Next.js Static Site Generation (SSG) to optimize website performance, improving user experience. Successfully completed this project as a personal side project to gain hands-on experience with new and challenging technologies.

Front-end developer at Keyrus

August 31, 2019 - July 23, 2025

Worked on the front end of the e-commerce website for one of the largest retailers in Colombia. Improved load times and high performance across devices. Delivered pixel-perfect design and smooth user interactions. Followed Scrum methodology and contributed to sprints within an international team.

Front-end developer at Credit Agricole

January 1, 2019 - Present

Guided the client in selecting a tech stack that ensured strong SEO performance and easy content management. Used React-based frameworks to deliver excellent page speed and improved Core Web Vitals scores. Built the structure for content types, reusable pages, and components, including internationalization (i18n). Enabled flexible page creation by making every CMS block reversible for tailored layouts. Trained the client's team on how to use new tools and produced clear documentation.