Oleksandr – React, Node.js, Gatsby.js

AI-powered working activity tracker

• Created a desktop tool that collects info about user activity and sends it to the server for processing;
• Built a server that processes a huge amount of client activity info using Open AI API;
• Found a way to reduce the cost of Open AI API usage to 4x times.

NFT exchange platform

• Was responsible for continuous improvements of FE code to keep up-to-date;
• Managed different chain integrations;
• Contributed to open-source projects related to target integrations.

Founded a company specializing in software solutions and development services for manufacturing enterprises. Delivered a product based on Node.js and TypeScript for efficient management of production processes and real-time progress tracking.

• Developed a white-label app that is actively used by multiple clients from scratch and sold it;
• Developed a responsive front end with React and Bootstrap and managed data with PostgreSQL and Prisma;
• Made cross-platform DevOps scripts with Bash to run the app on different platforms;
• Automated manual process of sensor data collection;
• Worked on edge between software and hardware for the first time.

An AI-powered app that simplifies CRM analytics for companies of any size, presenting insights in a user-friendly and intuitive manner.

• Migrated tech stack to improve the performance of daily data processing and API server;
• Supported and refactored really bad legacy code on FE.

This project is a platform aimed at facilitating the buyback and resale of unused clothing items, utilizing TypeScript as its core language. It involved collaboration with esteemed brands, including Kuyichi, Haglöfs, and Rains, to advance sustainable practices in the fashion industry. Backend development was conducted using Node.js and Nest.js, while the front end was built with Next.js and Chakra UI. Management of monorepo was achieved with NX, and the applications were hosted on the Azure cloud platform. Data storage was implemented using PostgreSQL, and Figma was employed for design collaboration throughout the development process.

• Reorganized Front-end and Back-end architecture;
• Implemented the best practices of development processes to enhance the development experience and ensure efficient delivery.

Open Banking payment system that seamlessly integrated with leading banks in the UK and EU.

• Migrated from serverless stack to monolith;
• Improved development flow by adding code checks and docs coverage;
• Mentored four developers starting from scratch and helped them reach the junior level.

Open-source project with 6k weekly downloads developed entirely from scratch. It features a React component designed for a simple login integration with Microsoft services, based on the Official Microsoft Authentication Library for JavaScript.

• Developed all components and functionalities from scratch;
• Provided ongoing support over multiple years;
• Ensured adherence to the Official Microsoft style guidelines throughout the project's lifecycle.

React components of Figma design system based on thomas-lowry/figma-plugin-ds, and implements UI2: Figma Design System.

• Spearheaded the launch of the open-source initiative for Figma as one of the founding members;
• Collaborated closely with Figma officials to drive the initiative forward;
• Successfully managed multiple projects within the Figma Plugins ecosystem;
• Transformed a CSS UI framework into a comprehensive React UI components library.