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Maksymilian Żyliński

@maksymilianyliski

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Senior Fullstack Engineer at Nexus Polska, modernizing hospital software and delivering AI-powered prescription entry.

Poland

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At Nexus Polska, I’m migrating legacy desktop modules of a hospital information system into modern web applications. I work across C#/.NET, C++/MFC, Microsoft SQL Server, and React/TypeScript.

I built the web version of the Prescription module and integrated AI-powered medication search, which fills in drug, dose, and schedule from a natural-language instruction. I also designed the Cypress E2E testing architecture from scratch, raising coverage from 0% to about 66%.

At TKH Technology, I built Angular and TypeScript tools for Commend International, including an admin panel for IoT intercom devices and a Media Library. I mentored a team of seven Angular engineers and contributed to feature planning and architecture refactors.

At GAMIVO, I built features for an Angular and TypeScript marketplace, including Google OAuth and Steam login; Steam sign-in was used by about 800 users per day in its first month. I also develop MachineWatch, a CNC monitoring SaaS, and Pompa, a cross-platform workout and nutrition tracker.

Experience

Work history, roles, and key accomplishments

Current

Senior Fullstack Engineer

Current

Nexus Polska

Oct 2026 - Present (1 month)

Migrating legacy desktop modules of a large hospital information system to modern web applications, working across the full stack including legacy C#/.NET and C++/MFC code, SQL Server, React/TypeScript frontends, and Docker-based environments. Testing with Playwright and Maestro (E2E) alongside unit tests.

C#.NET C++MFC Microsoft SQL Server React TypeScript Docker Playwright Maestro E2E Testing Unit Testing

Senior Frontend Engineer

Nexus Polska

Nov 2024 - Oct 2026 (1 year 11 months)

Built the web version of the Prescription module in React and TypeScript, integrated AI-powered medication search, and designed the Cypress E2E testing architecture from scratch, raising coverage from 0% to ~66%. Built and maintained an Azure DevOps CI/CD pipeline and developed features in the React Native mobile app.

React TypeScript Cypress E2E Testing Azure DevOps CI CD React Native AI Code Review Mentorship

Senior Frontend Developer

TKH Technology

Mar 2022 - Jul 2024 (2 years 4 months)

Built an Angular/TypeScript admin panel for configuring and managing IoT intercom devices, including ring groups and device settings, and a Media Library for managing video, audio, GIF, and PDF assets. Performed code reviews and mentored a team of 7 Angular engineers.

Angular TypeScript IoT NgRX Jest Karma Cypress CI CD Code Review Mentorship

Frontend Developer

GAMIVO

Jun 2020 - Mar 2022 (1 year 9 months)

Built features of a high-traffic Angular/TypeScript marketplace with complex client-side state, implemented Google OAuth and Steam login, and built an affiliate panel with dashboards and statistics. Implemented real-time upload progress using native WebSockets and contributed to the Java/Spring Boot backend.