Looking for a job

Ostap User

@ostapuser

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I build full-stack booking and logistics platforms with React, Node.js, NestJS, and AWS.

Poland

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What I'm looking for

I'm looking to build efficient full-stack products, tackle complex backend challenges, collaborate with cross-functional teams, and share technical knowledge while continuing to grow.

I've built full-stack platforms at Innowise and Swiss Krono Ukraine, from real-time travel booking to enterprise workforce and logistics operations.

At Innowise, I engineered Node.js and NestJS APIs for accommodation listings, user management, and bookings. I built real-time availability and host chat with WebSockets, secured authentication with bcrypt and JWT, and added Redis caching and AWS Lambda functions.

I also delivered React-based booking flows, personalized recommendations, MongoDB and Prisma data layers, AWS S3 storage, and Docker-based environments.

Previously at Swiss Krono Ukraine, I developed React and Node.js features for attendance tracking, RFID entry and exit tracking, timber shipments, unloading schedules, and role-based access for HR, logistics, and warehouse teams.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Innowise

Aug 2024 - Present (2 years 2 months)

Engineered a scalable backend API with Node.js and NestJS for a unified travel booking platform, architected real-time communication with WebSockets, and built the frontend with React.js, Zustand, and Axios.

Junior Full Stack Developer

Swiss Krono Ukraine

Jan 2023 - Dec 2023 (11 months)

Developed full-stack features for an enterprise workforce and logistics platform using React and Node.js/Express, integrated RFID card readers for attendance tracking, and implemented role-based access control with JWT.