Martin Čupeľa
Senior React SDK Developer at Stream
Spain
Summary
🤩
Rockstar🎓
Top SchoolMartin Čupeľa is a Senior React SDK Developer with 7 years of full-stack TypeScript experience, now focused on building and maintaining production-grade React chat SDKs and frontend examples at Stream. He balances front-end, back-end and DevOps work, shipping React UIs, Node.js services, GraphQL/REST APIs and containerized CI/CD pipelines while applying event-sourcing and microservices patterns. His projects include a sandboxed online code editor that orchestrates Docker containers on demand with multi-client editing and SSE notifications, showcasing his ability to connect real-time UX with secure execution environments. An active contributor to Stream’s open-source React chat repositories, he blends UI refactors and accessibility/styling fixes with pragmatic dependency and build maintenance. Trained in psychology, he brings strong team facilitation and user-focused product instincts to technical design and collaboration.
7 years of coding experience
11 years of employment as a software developer
Industrial and Organizational Psychology, Industrial and Organizational Psychology at Technische Universität DresdenMgr. Psychology, Mgr. Psychology at Masaryk University Brno, Faculty of Social Studies
Spanish, German, French, English
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (16)
customizer10
css10
typescript10
javascript10
user-interface10
typescripts10
custom-theme10
front-end-development10
customisation10
react10
typescript-types10
ui-components10
sc9
scs9
authentication6
Programming languages (4)
Github contributions (5)
GetStream/stream-chat-react
Feb 2022 - Jan 2023
React Chat SDK ➜ Stream Chat 💬
Role in this project:
Front-end Developer
Front-end DeveloperContributions:4 releases, 427 reviews, 313 commits in 10 months
Contributions summary:Martin primarily contributed to the front-end development of the React-based chat SDK. They refactored UI components, specifically updating the channel header to utilize SVG icons for the menu button. Additionally, they introduced functionality to the ChannelSearch component, allowing customization of the placeholder text. Further contributions included fixing a typo and improving import orders.
react-chatstream-chatchatreactchat-sdk
GetStream/website-react-examples
Apr 2022 - Nov 2022
Role in this project:Front-end Developer
Front-end DeveloperContributions:5 reviews, 6 commits, 46 PRs in 7 months
Contributions summary:Martin focused on upgrading and maintaining the user interface of social messenger demo applications. Their contributions include upgrading dependencies, refactoring components, implementing theme changes, and resolving styling issues to ensure the UI aligns with the latest Stream Chat React versions. They also addressed layout issues, corrected component behavior, and optimized visual elements, improving the overall user experience and visual consistency.
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