Sammy is a Senior Fullstack Engineer and Developer Experience ambassador with over 13 years of experience specializing in React, TypeScript, and Node.js. He is a dedicated test automation advocate with deep expertise in Cypress, Playwright, and Jest. Throughout his career, Sammy has delivered complex solutions for high-stakes industries, ranging from building financial trading platforms at Goldman Sachs to healthcare systems at Semble and tax automation dashboards for Fonoa. His technical versatility spans GraphQL, AWS microservices, and Next.js, complemented by a strong background in UX design and usability testing to ensure that highly technical backends remain intuitive for the end user.
Played a key role in building a webapp that provides a platform for traders to find and purchase financial structured products.
Built a user-friendly and intuitive interface that allows customers to quickly and easily browse and purchase financial products that suit their needs.
Built a robust and scalable website using a variety of technologies and best practices.
Assisted Fonoa, an online service automating taxes for companies like Uber, by working on products related to automated invoicing, tax calculations, returns automation, and supplier management.
Utilized React, TypeScript, Next.js, Tailwind, react-intl, and react-query in crafting performant and user-friendly UIs.
Introduced improvements to the codebase provided by relevant developer-experience tooling, besides feature development.
Completed a Greenfield project aimed at creating an aggregation platform for trading structured products. The platform was developed using React + Apollo, ElasticSearch, MongoDB, Kafka, and Snowplow.
Introduced notable features like a rewards program, competitor products, product comparison algorithms, and complex searching filters. Developed Apollo automated mocks for better workflow among teams.
Incorporated integrations with Sentry error-reporting, Contentful GraphQL API, Docker & Kubernetes. Implemented Continuous Integration/Continuous Deployment with GitLab.
Involved in full-stack JavaScript & TypeScript Development in React + React Native + Apollo + Node.js + Redux + REST + MongoDB, integrating with Braze & Segment for analytics.
Implemented an automated validation system for graphql schema against the codebase and graphics files.
Imposed testing and scraping frameworks (Jest, Enzyme, Pupetter) and Sentry error-reporting, Contentful, along with CI/CD using CircleCI.