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Hi there! I'm Oleh Romaniv, a hands-on Full Stack Developer with a passion for building scalable e-commerce and healthcare platforms. I enjoy turning complex requirements into clean, efficient code and delivering solid user experiences. I'm always excited to explore new tech, automate workflows, and collaborate with product and design teams to ship reliable software.…

Oleh Romaniv

Back-End Developer, Full Stack Developer, Front-End Developer, +4

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Hi there! I'm Oleh Romaniv, a hands-on Full Stack Developer with a passion for building scalable e-commerce and healthcare platforms. I enjoy turning complex requirements into clean, efficient code and delivering solid user experiences. I'm always excited to explore new tech, automate workflows, and collaborate with product and design teams to ship reliable software.…

Available to hire

Hi there! I’m Oleh Romaniv, a hands-on Full Stack Developer with a passion for building scalable e-commerce and healthcare platforms. I enjoy turning complex requirements into clean, efficient code and delivering solid user experiences.

I’m always excited to explore new tech, automate workflows, and collaborate with product and design teams to ship reliable software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Russian

Fluent

Ukrainian

Fluent

English

Intermediate

Polish

Intermediate

Spanish; Castilian

Beginner

Work Experience

Full Stack Developer at Chip Craze

January 1, 2023 - April 1, 2023

Designed and developed a scalable e-commerce platform using Next.js and Node.js, focusing on performance, modular architecture and maintainability. Implemented optimized data fetching and rendering strategies, improving load times and ensuring smooth user experience under increasing traffic. Structured the application with reusable components and clear state management, enabling faster feature development and easier long-term scaling. Integrated back-end services and APIs to support core e-commerce functionality, including product management and transaction flows.

Full Stack Developer at Octa Bionics

November 1, 2023 - February 1, 2024

Designed and implemented a secure Node.js backend for a medical prosthetics platform, with JWT-based authentication and protected access to sensitive user data. Modeled and optimized a PostgreSQL database to improve reliability, query efficiency and data consistency across core platform operations. Built and integrated REST APIs to support stable communication between backend services and the client application. Developed responsive and interactive interfaces using React, Redux and React Spring, improving usability and overall product experience.

Full Stack Developer at UMKA

May 1, 2024 - January 1, 2026

Led development across multiple e-commerce and business platforms, aligning technical solutions with operational and product needs. Integrated CRM, Binotel, Horoshop and Runway APIs, reducing manual processes and improving workflow efficiency across core business operations. Built Telegram bots and Python automation scripts for data processing, third-party integrations and routine workflows. Improved deployment reliability through Docker, NGINX and monitoring setup. Owned and implemented the SEO strategy across client-facing platforms, improving technical structure, metadata and search visibility. Participated in stakeholder meetings, translating business requirements into technical solutions across different platform directions.

Full Stack Developer (Contract) at UMKA

May 1, 2025 - June 1, 2025

Developed a high-traffic ticketing platform for a large-scale concert event. Implemented real-time ticket availability logic and reservation flows, reducing overselling risk during peak demand. Integrated Wix APIs, custom backend logic, and payment workflows to manage bookings, transactions and event operations. Optimized platform responsiveness and stability to maintain reliable performance during traffic spikes and ticket release windows.