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Hi, I’m Krzysztof Bonk, a Senior Full-Stack AI Engineer based in Warsaw, Poland. I specialize in building scalable AI-powered platforms that blend frontend and backend expertise to deliver real-time video calls and chat experiences with tight synchronization of audio, video, and generated content. I’ve led end-to-end development across cross-functional teams, shipped production-grade microservices, and integrated AI services such as OpenAI and Stable Diffusion. I’m passionate about performance, reliability, and crafting delightful user experiences while continuously improving engineering practices and tooling.…Hi, I’m Krzysztof Bonk, a Senior Full-Stack AI Engineer based in Warsaw, Poland. I specialize in building scalable AI-powered platforms that blend frontend and backend expertise to deliver real-time video calls and chat experiences with tight synchronization of audio, video, and generated content. I’ve led end-to-end development across cross-functional teams, shipped production-grade microservices, and integrated AI services such as OpenAI and Stable Diffusion. I’m passionate about performance, reliability, and crafting delightful user experiences while continuously improving engineering practices and tooling.

Krzysztof Bonk

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Hi, I’m Krzysztof Bonk, a Senior Full-Stack AI Engineer based in Warsaw, Poland. I specialize in building scalable AI-powered platforms that blend frontend and backend expertise to deliver real-time video calls and chat experiences with tight synchronization of audio, video, and generated content. I’ve led end-to-end development across cross-functional teams, shipped production-grade microservices, and integrated AI services such as OpenAI and Stable Diffusion. I’m passionate about performance, reliability, and crafting delightful user experiences while continuously improving engineering practices and tooling.…Hi, I’m Krzysztof Bonk, a Senior Full-Stack AI Engineer based in Warsaw, Poland. I specialize in building scalable AI-powered platforms that blend frontend and backend expertise to deliver real-time video calls and chat experiences with tight synchronization of audio, video, and generated content. I’ve led end-to-end development across cross-functional teams, shipped production-grade microservices, and integrated AI services such as OpenAI and Stable Diffusion. I’m passionate about performance, reliability, and crafting delightful user experiences while continuously improving engineering practices and tooling.

Available to hire

Hi, I’m Krzysztof Bonk, a Senior Full-Stack AI Engineer based in Warsaw, Poland. I specialize in building scalable AI-powered platforms that blend frontend and backend expertise to deliver real-time video calls and chat experiences with tight synchronization of audio, video, and generated content.

I’ve led end-to-end development across cross-functional teams, shipped production-grade microservices, and integrated AI services such as OpenAI and Stable Diffusion. I’m passionate about performance, reliability, and crafting delightful user experiences while continuously improving engineering practices and tooling.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Polish

Fluent

English

Advanced

Work Experience

Senior Full-Stack AI Engineer at Luxoft

February 1, 2021 - April 1, 2024

Spearheaded development of a hybrid backend for AI chat using Node.js, Express, and GraphQL, supporting 200,000 monthly messages and reducing API latency by 41%. Implemented real-time messaging transport with socket.io and Redis Pub/Sub, enabling sub-200ms delivery for live typing and presence across 50,000 concurrent users. Led authentication with JWT, session handling, and Redis-backed ephemeral data storage. Established CI/CD pipelines with Travis CI and Docker/Kubernetes, and orchestrated deployments via AWS ECS/Terraf orm. Integrated OpenAI and Stable Diffusion into production-like workflows and coordinated cross-team efforts to deliver synchronized audio, video, and generated content experiences.

Full-Stack Software Engineer at Future Processing

January 1, 2019 - January 1, 2021

Designed and implemented a single-page chat interface using React and Redux with responsive layouts and media attachments, improving mobile completion rate by 31%. Built backend REST APIs with Node.js and Express, interfacing MongoDB and PostgreSQL to serve 10,000 daily active users with 99.7% uptime. Integrated third-party AI services (Dialogflow, early OpenAI prototypes) to prototype conversational flows, reducing cycle time from weeks to days. Optimized media pipelines with FFmpeg and background workers, supporting batch processing of 2,000 images/hour. Implemented JWT-based auth, Redis session storage, and robust auth flows. Created CI/CD pipelines with Docker/Kubernetes, and mentored teammates to improve QA and PR acceptance.

Software Engineer at Sii Poland

November 1, 2017 - January 1, 2019

Delivered core web features using AngularJS, later migrating components to Vue.js to accelerate delivery by 40% for key client modules. Built backend services using Java and Spring Boot, connected to MySQL and MongoDB, handling tens of thousands of API requests daily with high availability. Contributed to authentication and security practices, set up CI/CD with Docker and Jenkins, and collaborated with international project teams across Poznań and other offices.