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Lenin Uzcategui

@leninuzcategui

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I’m a senior front-end developer delivering accessible, high-performance React applications for enterprises.

Chile

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What I'm looking for

I’m looking to grow in an ambitious, cross-functional team where I can build accessible, pixel-perfect, high-performance web apps. I want to own React front-end delivery, strengthen testing/CI/CD, and collaborate closely with backend services while mentoring others.

I’m a Front-End Developer with over 4 years of professional experience at Globant, delivering responsive, high-performance web applications for enterprise clients in the e-commerce and fintech sectors. I bring deep expertise in React.js, advanced CSS methodologies, and modern JavaScript (ES6+), backed by a strong foundation in testing, API integration, and Agile delivery. I’m known for translating complex design requirements into pixel-perfect, accessible interfaces while maintaining 90%+ test coverage and mentoring junior engineers.

In my most recent role, I designed and maintained responsive applications and improved user engagement metrics by 20% through UX-aligned, pixel-perfect implementations. I led unit and integration testing with Jest and Vitest to achieve 90%+ code coverage and reduced production incidents by 30% via automated testing pipelines integrated into CI/CD workflows. I’m passionate about emerging technologies—currently exploring Svelte, TypeScript, Elixir/Phoenix, and WebAssembly—and I’m committed to contributing to ambitious, cross-functional teams as a Senior or Semi-Senior Front-End Developer.

Experience

Work history, roles, and key accomplishments

Front-End Developer (Semi-Senior)

Globant

Jun 2020 - Jun 2025 (5 years)

Designed and maintained responsive enterprise web applications for e-commerce and fintech using React.js, HTML5, and CSS3, improving user engagement by 20%. Led unit and integration testing with Jest and Vitest (90%+ coverage), reduced production incidents by 30% via CI/CD testing pipelines, and mentored junior developers.

React HTML5 CSS3 styled components Jest Vitest Integration Testing TDD CI CD RESTful APIs PostgreSQL Agile Scrum Vite

Junior Front-End Developer

Globant

Dec 2020 - May 2021 (5 months)

Supported the development of web applications, transitioning static sites to dynamic React-based UIs using HTML, CSS, and JavaScript. Performed code reviews, set up initial Jest testing, and collaborated on API integrations and SQL database queries within Agile environments.