Open to opportunities

Alexsander Sarmento

@alexsandersarmento

Message

I build production-critical React, Node.js, and AWS SaaS products across web and mobile.

Brazil

Message

What I'm looking for

I'm looking for senior full-stack, React/TypeScript, product engineering, or mobile engineering work where I can build reliable web and mobile products across frontend, backend, cloud infrastructure, and production operations.

I'm building production-critical features, APIs, and data services for Clint's large-scale B2B CRM SaaS platform using React, TypeScript, Node.js serverless, GraphQL, PostgreSQL, OpenSearch, and AWS.

Previously at Plathanus Software & Design, I delivered web and mobile products end-to-end, from responsive React interfaces and Node.js APIs to cloud deployment. My mobile work with Flutter and React Native helped ship multiple applications on Google Play and the App Store, including BJJ Control, Mingoo, PopUp CAASC, and Pluxee Fleet.

I've also built FeedSpring, a SaaS social-feed platform used by more than 3,500 companies globally, and contributed to Reservatório de Dopamina, a platform with more than 150,000 subscribers. I care about reliable, maintainable software, accessible interfaces, performance, and practical engineering workflows.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Software Engineer

Current

Clint

Sep 2025 - Present (1 year)

Working on a large-scale B2B CRM SaaS platform, building production-critical features and services with React, Node.js serverless, GraphQL, PostgreSQL, OpenSearch, and AWS. Developing React and TypeScript interfaces using a proprietary design system, with attention to componentization, accessibility, and internationalization.