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Andres Tijera

@andrestijera

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Frontend developer building accessible, high-performance React and Next.js apps.

Colombia

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What I'm looking for

I’m seeking frontend roles where I can build accessible, high-performance React/Next.js products, collaborate with designers, and drive maintainable component systems.

I am a Frontend Developer with 4+ years building high-performance, accessible web applications using JavaScript/TypeScript, React, and Next.js. I have a proven track record delivering scalable solutions in distributed teams, optimizing frontend performance (high Core Web Vitals), and collaborating closely with designers and backend engineers to produce maintainable component architectures.

I specialize in turning Figma designs into pixel-perfect components, integrating headless CMS solutions like Contentful, and establishing design-system consistency with Storybook. I deliver results under tight timelines—having built a React/Next.js MVP and ~30 atomic components within two months—while prioritizing accessibility, performance optimization, and clean, testable code.

Experience

Work history, roles, and key accomplishments

Frontend Developer

Valtech

Apr 2024 - Dec 2025 (1 year 8 months)

Built React/Next.js and Vue/Nuxt apps, translating Figma designs into pixel-perfect components. Delivered MVP in 2 months (~30 components using Atomic Design). Integrated Contentful CMS and implemented Redux Toolkit for state management. Designed flexible interfaces to unblock development when backend was behind schedule.

React Next.js TypeScript Redux toolkit Contentful Performance Optimization TailwindCSS

Frontend Developer

Kin + Carta

Dec 2023 - Dec 2024 (1 year)

Built enterprise website from scratch using Base UI with custom styling. Achieved 91 Performance, 99 Accessibility, 100 Best Practices/SEO on PageSpeed. Reduced bundle size ~35% and load times ~20%. Built WCAG-compliant components documented with Storybook. Developed web scraping for CMS migration.

React TypeScript Performance Optimization Accessibility Lazy Loading Storybook Next.js JavaScript

React Developer

Blossom

Apr 2022 - Dec 2023 (1 year 8 months)

Developed features across web, mobile, and admin platforms for core banking solution serving credit unions. Built reusable React components with GraphQL/Apollo Client. Resolved cross-platform bugs ensuring UI consistency and reliability.

TailwindCSS Context API React GraphQL Apollo Client TypeScript Responsive Design

Frontend Developer

Prevalentware

May 2021 - Jun 2022 (1 year 1 month)

Built dashboard applications for commodities platform using Next.js, Prisma, and GraphQL. Created responsive interfaces with React and Tailwind CSS enabling companies to publish and manage logistics.