Ivan Lysko Email & Phone Number

Spain

Lviv, Ukraine

- Architected Optimized Rendering Approach: Implemented a strategic separation of SSR, SSG, and client-side rendering, rewriting and optimizing the rendering process to improve efficiency and performance across the application.- Enhanced Resource Efficiency: Optimized CPU and RAM consumption for the Next.js application, reducing AWS costs for the client. Decreased CPU usage per active user from 0.6 to 0.05 and resolved memory leaks, ensuring stable memory usage over time. Memory consumption dropped from a steady increase to 1GB over two days to a consistent level of 400MB, significantly enhancing stability and resource utilization.- Performance Optimization for User Experience: Reduced search page load time from 5 seconds to 1–1.5 seconds by refining SQL queries, implementing caching strategies, and optimizing both front-end and back-end logic.

Collaborating closely with a seasoned Tech Lead, I spearheaded the development of a top-notch backend for online event streaming. Our product has been successfully delivered to several important events with all the essential features, and I have further enhanced the system to enable high-load parallel streaming during events.

Kharkiv, Ukraine

I successfully launched a project that I developed from scratch, which was able to withstand high loads.I have supported various projects in different areas such as blockchain and marketplaces. I immerse myself in understanding business requirements and propose solutions that help to implement necessary functionality faster, better and correct malfunctions.Collaborated closely with product managers and stakeholders to collect requirements and convert them into practical development tasks.

Kyiv, Kyiv City, Ukraine

Store Management Web Service: - Improved dashboard page performance by 320% by optimizing the data retrieval approach, transitioning from fetching all stores to using pre-prepared data.- Provided long-term support and maintenance for a comprehensive web service.- Managed and enhanced functionalities for the store management system.- Ensured system reliability, performed updates, and integrated new features as needed.Chrome extension:- Successfully developed a Chrome browser extension from scratch.- Maintained and updated the extension based on client requirements and user feedback.

Bachelor Of Engineering - Be, Esi Infocommunications And Software Engineering. Software Engineering

Junior Specialist, Computer And Software Engineering. Administration Of Computer Systems And Networks