Sergio Esteban Torres Niño

Senior Frontend Engineer

Built frontends for three LLM-generated content products and led the migration to Next.js 14, improving Lighthouse Performance from 25 to 94. Managed public search apps end to end on AWS S3 and Lambda.

ReactNext.jsTypeScriptReduxAWSAzure DevOpsPlaywrightFigmaClaude Code

Frontend Developer

Built a self-improvement blog from the ground up using React and Hygraph, enabling the editorial team to publish without coding. Designed the home page and reading experience in weekly iterations with the product owner.

ReactJavaScriptGraphQLHyGraphReact RouterGit

Frontend Web Developer

Built an investor web app for retail investors, including portfolio metrics, interactive charts, and real-time price updates. Wrote unit tests with Jest and documented components to speed up onboarding.

ReactJavaScriptReduxReact RouterREST APIsWebpackJestGit

Freelance Web Developer

Developed web projects for small businesses.