Summary
Overview
Work History
Education
Skills
Painting and playing piano
Timeline
Hi, I’m

Sergio Andrés Martínez

Full Stack Frontend Developer
Mosquera
Sergio Andrés Martínez

Summary

I am Sergio Martinez, a full-stack JavaScript developer passionate about using technology as a tool for socio-economic change and solving real-life problems. My expertise lies in web development with proficiency in ReactJS, Node.js, and SQL. I also have experience in back-end development using Next.js and deploying applications on Vercel. I have a keen interest in UX/UI design and enjoy crafting user-friendly and visually appealing interfaces. With strong project management skills, I mentor junior developers in agile environments, ensuring efficient project completion. Outside of work, I enjoy diversifying my knowledge in relevant fields and engage in activities such as sports, research, and critical thinking.

Overview

17
years of professional experience
2
years of post-secondary education
1
Language

Work History

UNAD

Multimedia engineering
04.2023 - Current

Job overview

  • UX/UI Design, Frontend (HTML, CSS, JavaScript, React, Python C#), Multimedia Integration.

CIDE

Graphic Designer
12.2007 - Current

Job overview

  • UX - UI, design creator web, Adobe, Sketch, Figma.

Hunt Tickets

Full Stack Web Developer
08.2024 - 04.2025

Job overview

  • Used Javascript, SQL and HTML to develop app-solutions.
  • Increased website performance by optimizing front-end and back-end code for faster loading times.
  • Applied responsive design principles to ensure consistent display and functionality across a wide range of devices, including mobile phones, tablets, and desktop computers.
  • Created easy-to-use APIs for third-party integrations, enhancing the functionality of existing applications without compromising on performance or security.

Fracttal

Senior Front End Developer
08.2023 - 04.2024

Job overview

  • Designed and developed a UX component system based on atomic design for the Fracttal One application, using React.js, Redux, Sass, HTML, JavaScript ES6, TypeScript, Storybook, and Node.js.
  • Implemented and documented components, training other developers in their use and ensuring effective integration into React Native projects.
  • Optimized application performance, reducing load time by 20% through advanced code optimization techniques.
  • Maintained and improved existing React applications, fixing bugs and updating dependencies, resulting in a 30% decrease in production incidents.
  • Facilitated collaboration between design and development teams, ensuring the accurate implementation of design specifications and improving system interoperability.

Grupo Ditech

Semi Senior Front End Developer
08.2023 - 04.2024

Job overview

  • Company Overview: Casa Editorial El Tiempo for Metrocuadrado project
  • Developed and built web applications using React.js, Next.js, Redux, Sass, HTML, JavaScript ES6, Storybook, TypeScript, and Node.js.
  • Documented components and created a model of reusable components based on systematic design.
  • Optimized application performance by implementing advanced code optimization techniques.
  • Collaborated closely with designers and backend teams to ensure consistency and functionality of user interfaces.
  • Trained other team members in the use and maintenance of developed components.
  • Casa Editorial El Tiempo for Metrocuadrado project

FacTECH

Senior Front End Developer
10.2022 - 04.2023

Job overview

  • Developed, built, and maintained web applications using React.js, Next.js, CSS, HTML, JavaScript ES6, GraphQL, and Node.js.
  • Implemented innovative frontend solutions, enhancing user experience and optimizing application efficiency.
  • Collaborated closely with backend and design teams, ensuring consistency and functionality of user interfaces.
  • Documented and trained other developers in best practices and efficient use of modern technologies.
  • Improved application performance, achieving significant reductions in load times and production incidents.

Aranda Software

Senior Front End Developer
01.2022 - 10.2022

Job overview

  • Developed, built, and maintained web applications using JavaScript technologies such as React.js, Redux, Sass, HTML, JavaScript ES6, TypeScript, Storybook, and Node.js.
  • Collaborated with design and backend teams to ensure consistency and functionality of user interfaces.
  • Implemented and optimized application performance using advanced code optimization techniques.

Education

UNAD

Multimedia engineering from UX/UI Design, Frontend (HTML, CSS, JavaScript, React, Python C#), Multimedia Integration
04.2023 - Current

University Overview

CIDE

Graphic Designer from UX - UI, design creator web, Adobe, Sketch, Figma

University Overview

Skills

Communication

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Painting and playing piano

Painting and playing piano

Painting and playing the piano help me relax and express myself. I love painting because it represents a peaceful pause in my life, where i can forget my worries and focus only on colors and creativity. It's like taking a deep breath in the middle of a busy day. Playing the piano also gives me calm and helps me to connect with my emotions.

Timeline

Full Stack Web Developer
Hunt Tickets
08.2024 - 04.2025
Senior Front End Developer
Fracttal
08.2023 - 04.2024
Semi Senior Front End Developer
Grupo Ditech
08.2023 - 04.2024
Multimedia engineering
UNAD
04.2023 - Current
UNAD
Multimedia engineering from UX/UI Design, Frontend (HTML, CSS, JavaScript, React, Python C#), Multimedia Integration
04.2023 - Current
Senior Front End Developer
FacTECH
10.2022 - 04.2023
Senior Front End Developer
Aranda Software
01.2022 - 10.2022
Graphic Designer
CIDE
12.2007 - Current
CIDE
Graphic Designer from UX - UI, design creator web, Adobe, Sketch, Figma
12.2007

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Sergio Andrés MartínezFull Stack Frontend Developer