Kewin Wereszczyński

Kewin Wereszczyński

Software Engineer

Started his career as a tester before transitioning into programming, working on numerous startup projects as a solo frontend developer or in small teams. His biggest achievement was becoming a frontend lead on one of the projects. Passionate about 3D graphics, games, special effects, photography, and cinematography, he has also explored being a rock band vocalist, English stand-up performer, improviser, and YouTuber. Recently, he has become a bit obsessed with AI.

What I’ve been shipping

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How I Used MCP to Control My Friend's Home

Learn how MCP works with a hands-on project that connects Claude AI to smart home data using a Node.js server.

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Want to Run LLMs on Your Device? Meet MLC

Find out how MLC compiles both model and runtime for efficient local LLM inference, and what that means for running AI on your Android or iOS app.

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Local LLMs on Mobile Are a Gimmick-For Now

Can local LLMs replace cloud-based AI? We analyze performance, limitations, and the future of on-device AI models in 2025.

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Giving AI The Keys to Your App: Agents Controlling UI State

Learn how to let AI agents control UI state in React using Jotai and Flows-AI, automating logic and workflows for smarter, autonomous applications.

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Building AI Agent Workflows With Vercel’s AI SDK: A Practical Guide

Learn to build AI Agent workflows with Vercel's AI SDK. Explore chaining, routing, parallel & evaluator-optimizer patterns.

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Creating a Video Transcription App: Lessons Learned

Read about Callstack's R&D journey into AI for a transcription app, using OpenAI's Whisper for speech recognition. Discover the lessons learned.

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Building a Custom AI Assistant for Your Business

Learn what it takes to build a custom AI-powered chatbot for your company, including the challenges, solutions, performance, and security considerations.

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Live Dev Session: React Universe News, Tools & Code

React & React Native live stream: new tools, news, coding experiments, and developer opinions—raw, unscripted, and full of real-time insights.

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React Universe, Unfiltered: WWDC, AI, Storybook, and Dev Hot Takes

A live, unscripted dev session on Apple WWDC, on-device AI, Storybook drama, and the quirks of React Native, plus lots of developer side quests.

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Run LLMs Locally With React Native & MLC

Watch how MLC brings on-device AI to React Native. See react-native-ai in action and discover what’s next for local model execution.

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