Contact information

You can get this candidate's contact information from https://www.work.ua/resumes/9861605/

Work experience

Backend програміст

from 09.2025 to 09.2026 (1 year)
TemaBit, Дистанційно (IT)

• Built core workflows of an in-house operations app (REST API, unit tests) that replaced a third-party vendor system, using spec-driven AI-agent development; now in production and rolling out across the network.
• Designed the platform's user and permission model with per-location access, extensible to new apps without schema changes.
• Stopped erroneous SMS to customers by fixing a carrier-sync bug that reactivated long-closed orders.
• Eliminated race conditions in concurrent order acceptance with conditional writes and PostgreSQL advisory locks.
• Built a serverless real-time support chat in Telegram connecting customers with the support team.
• Built a reusable Telegram alerting library that surfaces production errors in real time at near-zero cost.

Back end програміст

from 07.2024 to 06.2025 (1 year)
Nexa Agency, Дистанційно (IT)

Agency building Telegram Mini Apps and gamified airdrop platforms used by millions of users.
• Owned backend architecture for 5+ Telegram Mini Apps and gamified airdrop platforms, including one with over 4 million users; onboarded and guided a second backend developer as the team grew.
• Designed RESTful APIs handling 500K+ daily requests, scaling airdrop platform backend to support user spikes with minimal downtime.
• Developed TON and Telegram Stars payment integrations, supporting in-game purchases and withdrawals.
• Resolved a critical event loop blocking issue caused by DB queries fetching millions of records per user; refactored data access, restoring stability under high traffic.

Education

Secondary

Knowledge and skills

• Patience
• Responsibility
• Purposefulness
• JavaScript
• Git
• MySQL
• Node.js
• MongoDB
• TypeScript
• Mongoose
• PostgreSQL
• GitHub
• AWS
• Single-minded
• HTML
• SQL
• Docker
• REST API
• TypeORM
• NestJS
• Express.js

Language proficiencies

• English — average
• Ukrainian — fluent