Sergio – AWS, React, Typescript
Sergio is a Full-Stack Developer with 5+ years of experience building applications using React, Node.js, Next.js, TypeScript, and AWS. Experienced in microservices, serverless, event-driven, stateless, and distributed systems, with strong knowledge of caching strategies and scalable architectures. Skilled in Node.js internals, asynchronous code, and file/stream processing, with hands-on experience in AWS services and CI/CD pipelines. Beyond coding, he has experience as a Tech Lead, managing international teams of 10–12 people.
14 years of commercial experience in
Main technologies
Additional skills
Direct hire
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Let’s get started today!Experience Highlights
Senior Full-Stack Developer
Bitwerx provides a platform that simplifies data integration in the veterinary field. I contributed to building an internal tool that allowed cross-functional teams to create taxonomy mappings, enabling customers to integrate their data seamlessly.
- Contributed to the creation of reusable components with a system design that could be applied across different applications;
- Introduced new tools, such as Prisma, to interact with the database;
- Improved data fetching by adding pagination, which was previously missing;
- Enhanced text search by requiring a minimum number of characters and implementing a debounce to prevent unnecessary requests;
- Leveraged a robust architecture with Neo4j for flexible data retrieval, efficient data combination, and Prisma for transaction management on a PostgreSQL database within a Next.js application.
Senior Full-Stack Developer
Film Funder is a marketplace designed to connect creators and writers with directors and funders to develop projects in the film industry.
- Designed the database structure for the MVP;
- Created a REST API with basic CRUD operations for project management;
- Implemented Prisma for database interaction;
- Added role-based access control for the application and its features;
- Made minor UI adjustments.
Senior/Tech Lead Full-Stack Developer
Petco.com is the largest e-commerce pet retailer in the US, with over a million visits per day.
- Helped migrate the platform to a headless architecture;
- Implemented SSR strategies to maximize SEO ranking;
- Designed and executed A/B testing strategies;
- Implemented caching strategies to improve platform performance;
- Led a front-end development team of 12 developers across multiple countries.
Senior Full-stack developer
Seeconds is a mobile application that allows users to watch the latest news and trends in video format. It also enables them to follow channels, artists, or hashtags, and to like content.
- Designed the database structure;
- Developed the CMS backend for content creation;
- Built a microservice for video processing using FFMPEG, Redis, and AWS S3;
- Contributed to the development of the mobile application;
- Created a Single Page Application (SPA) for users who received shared content links but did not have the mobile app installed;
- Configured deep links in the mobile app to improve user experience;
- Containerized applications with Docker to ensure consistent deployment.