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I am a Swiss-based front-end and full-stack engineer with a track record of delivering scalable solutions for defense and healthcare. I design architectures using Angular 15, TypeScript, and Next.js, and I optimize performance for high-traffic environments and large-scale applications. I enjoy collaborating with cross-functional teams to ship features that improve clinical workflows and user experiences. I am fluent in Spanish and English with a working knowledge of German, and I bring a proactive, user-centered mindset to every project.…I am a Swiss-based front-end and full-stack engineer with a track record of delivering scalable solutions for defense and healthcare. I design architectures using Angular 15, TypeScript, and Next.js, and I optimize performance for high-traffic environments and large-scale applications. I enjoy collaborating with cross-functional teams to ship features that improve clinical workflows and user experiences. I am fluent in Spanish and English with a working knowledge of German, and I bring a proactive, user-centered mindset to every project.

Juan Sebastian Quinayas Guarin

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

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I am a Swiss-based front-end and full-stack engineer with a track record of delivering scalable solutions for defense and healthcare. I design architectures using Angular 15, TypeScript, and Next.js, and I optimize performance for high-traffic environments and large-scale applications. I enjoy collaborating with cross-functional teams to ship features that improve clinical workflows and user experiences. I am fluent in Spanish and English with a working knowledge of German, and I bring a proactive, user-centered mindset to every project.…I am a Swiss-based front-end and full-stack engineer with a track record of delivering scalable solutions for defense and healthcare. I design architectures using Angular 15, TypeScript, and Next.js, and I optimize performance for high-traffic environments and large-scale applications. I enjoy collaborating with cross-functional teams to ship features that improve clinical workflows and user experiences. I am fluent in Spanish and English with a working knowledge of German, and I bring a proactive, user-centered mindset to every project.

Available to hire

I am a Swiss-based front-end and full-stack engineer with a track record of delivering scalable solutions for defense and healthcare. I design architectures using Angular 15, TypeScript, and Next.js, and I optimize performance for high-traffic environments and large-scale applications. I enjoy collaborating with cross-functional teams to ship features that improve clinical workflows and user experiences.

I am fluent in Spanish and English with a working knowledge of German, and I bring a proactive, user-centered mindset to every project.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

German

Intermediate

Work Experience

Front-end Developer Intern at Atos

November 1, 2017 - June 1, 2018

Frontend development internship responsible for implementing UI components, fixing cross-browser issues, and collaborating with backend teams to integrate APIs. Contributed to code reviews and documentation; used PHP, jQuery, Git, and MySQL for rapid feature delivery.

Full-Stack Developer at Digital5

December 1, 2022 - March 1, 2024

Developed and maintained new features for managing the Olympic Games website content; improved data loading efficiency. Collaborated with front-end and back-end teams; stack included PHP, jQuery, Git, and MySQL.

Front-end Developer at AkkoDis

May 1, 2024 - February 1, 2025

Front-end development tasks, implementing responsive UI components, collaborating with UX designers to enhance user experience, and ensuring accessibility and performance across devices.

Full-Stack Developer at Digitalist

December 1, 2022 - January 1, 2023

Responsible for both front-end and back-end development, I contributed to building robust applications and managed databases, ensuring seamless integration and performance.

Front-end Developer Intern at Atos

November 1, 2019 - June 1, 2020

Contributed to front-end development tasks in an Agile environment, supporting Angular/TypeScript projects and collaborating with cross-functional teams to deliver timely updates.