Illia Zinchenko

• ▹Co-founded and led full-cycle development of a tournament management platform growing to 1,000+ users, becoming official partner of the Ukrainian Badminton Federation.
• ▹Architected a multi-format tournament system supporting round-robin, single/double elimination, and group stage formats with real-time match scoring.
• ▹Built a dynamic player rating engine tracking individual progress with automated ranking algorithms.
• ▹Developed club management features enabling clubs to manage members, internal rankings, and rosters.
• ▹Delivered a comprehensive analytics dashboard giving players and organizers full visibility into performance across the platform.

• ▹Promoted to Project Lead managing a distributed team of 6 engineers across 4 countries delivering a financial forecasting platform.
• ▹Built a multi-year financial forecasting platform enabling large enterprises to model P&L, balance sheet, and cash flow projections using Golang, Oracle, React, and Portainer + AWS.
• ▹Developed an AI-powered accounting automation tool that auto-fetches, analyzes, and categorizes user transactions using Lambda functions and Plaid API.
• ▹Engineered an IoT-based workforce time-tracking system with punch-in/punch-out hardware devices and payroll-ready data exports integrating QuickBooks, Plaid, Stripe, and Flinks.
• ▹Architected and maintained multi-tenant and micro-service cloud infrastructure using AWS, Docker, RabbitMQ, Redis.

• ▹Conducted pre-release security consulting identifying and resolving critical vulnerabilities before production launch using Firebase and Next.js security best practices.
• ▹Delivered new feature development accelerating product readiness for release using Next.js and Firebase.
• ▹Integrated Gemini AI to power an intelligent tutoring system that analyzes student test responses and generates personalized hints within an ed-tech platform.

Promoted from Middle Full-Stack Developer (before Jul 2023)

• ▹Promoted to Web Team Lead, defining development and QA processes for a cross-functional team of 10+ engineers.
• ▹Led and mentored a JS/TS Full-Stack internship program, improving team onboarding through hands-on coaching in React and Express.js.
• ▹Managed full team lifecycle including hiring, performance reviews, and personal development plans across a 10+ person engineering team.
• ▹Built a healthcare appointment booking platform for a German clinic network with penetration testing and security hardening using NestJS, PostgreSQL, and AWS.
• ▹Developed a logistics and parcel tracking platform with real-time shipment visibility using Socket.io, ReactJS, and AWS infrastructure.
• ▹Built a social platform for plant enthusiasts with IoT device integration for real-time plant monitoring using Firebase Realtime DB, MQTT, Bluetooth, and React.
• ▹Architected scalable cloud infrastructure using AWS CloudFront, S3, EC2, Lambda, RDS, and VPC.
• ▹Integrated AI-powered features into client products via ChatGPT API and OpenRouter.

• ▹Maintained and stabilized a legacy full-stack application reducing technical debt using ReactJS, Node.js, and PostgreSQL.
• ▹Upgraded Node.js from v6 to v14 step by step.
• ▹Integrated and supported PayPal payment flows ensuring uninterrupted transaction processing within an existing production codebase.
• ▹Managed cloud deployment and infrastructure using Heroku and AWS.

• ▹Built and shipped web3-integrated UI features for a fintech startup using ReactJS.
• ▹Developed a Discord-based football simulation game with real-time game logic using Express.js, Discord API, and PostgreSQL.

• ▹Developed internal accounting system features reducing manual processing time using C# WFA.
• ▹Developed integration with 1C databases.
• ▹Resolved rendering and performance bottlenecks for large-scale data processing pipelines via optimized C# algorithms and memory management.