Senior Full Stack Engineer / AI Engineer

Software with a pulse

I am Oleh, a Ukrainian engineer based in Poland. I build practical AI systems, full-stack products, MCP servers, LLM workflows, and developer tools with TypeScript, React, Node.js, Go, and cloud infrastructure.

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Experience

Senior full-stack work across AI, product, and production systems

ControlUp

Senior Full Stack Engineer / AI Engineer

Building production AI assistant infrastructure with MCP servers, tool orchestration, human-in-the-loop flows, chat history, and full-stack LLM integrations.

Quicklizard

Senior Software Engineer

Delivered pricing and commerce features across Next.js, Go services, Redis, RabbitMQ, PostgreSQL, Kafka, AWS, and observability tooling.

S-PRO

Lead Software Engineer

Led frontend engineers, supported 17+ projects, contributed to discovery, hiring, estimations, workshops, and system architecture.

Operating style

Useful software, fast feedback, fewer weird corners

I like engineering that serves the product: observable systems, thoughtful automation, and tools that make teams faster without making the codebase stranger.

Practical AI

LLM features should be observable, debuggable, and useful inside real product workflows.

Product gravity

The point is not just clean code. It is helping people learn, work, decide, ship, and operate.

Tooling taste

Fast feedback loops, developer experience, automation, and terminal-native workflows matter.

Maintainable systems

Clear ownership, simple abstractions, and production reliability beat cleverness for its own sake.

Selected projects

Real product surfaces, not just shiny screenshots

Featured projects

DEX / autonomous IT

Senior Full Stack / AI Engineer

ControlUp

A Digital Employee Experience platform where I'm building the AI Assistant from scratch: MCP servers, multi-agent tooling, and LLM pipelines on Foundry.

A license-aware AI platform that acts directly on enterprise monitoring and automation infrastructure.

ai assistantmcpmulti-agent

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Quicklizard dynamic pricing dashboard preview

AI dynamic pricing

Senior Full Stack Developer

Quicklizard

An AI-powered dynamic pricing platform where I owned full-stack delivery: Next.js workflows, Go services, and rollouts behind feature flags.

Modernized the frontend stack, cut repository overhead, and shipped the pricing dashboard, i18n, auth, and bulk-override workflows.

next.jsgopricing

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Restaurant delivery

Commerce systems

Tso Chinese

Dark-kitchen automation software where I designed the TSO 3.0 architecture, moving to microservices and rewriting the REST APIs as GraphQL.

Led a cross-functional team of up to 10 on a product running live operations, jobs, delivery, and a payment-processor migration.

microservicesgraphqlteam lead

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