Senior Product Engineer with Full-stack Expertise

Helder Oliveira is a Product Engineer and a creative based in London. He has built full-stack applications across web, mobile, blockchain and embedded platforms. His client-side expertise includes React, Electron, Roku’s Scenegraph, and native iOS development with Swift and SwiftUI, with a strong focus on UX and design-first thinking. On the service-side, he has experience with traditional service hosting, containers, and serverless, including AWS, GCP, Cloudflare Workers, CloudFormation, SAM CLI, Node.js, Bun.js, MySQL, Postgres, NoSQL, gRPC, Redis, Docker, and Nginx, as well as legacy tools like CodeIgniter and FTP. He has also developed developer tools such as CLIs and SDKs, primarily in Typescript/JavaScript, and has written code in systems languages like Rust and Zig. He prioritizes clean code, great UX, developer experience, documentation, rapid iteration, and automating workflows with CI/CD (GitHub Actions, Bash scripts). He is also familiar with modern development practices leveraging coding agents like pi, opencode, claude, LLM, and kimi over fireworks inference.