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Andrey Bulygin

@andreybulygin

Backend engineer at Staff-Hub who automated migration of 6,170+ news items and analytics collection.

At Staff-Hub, I delivered backend development for multiple clients, including automating the migration of over 6,170 news items from the legacy RusHydro news portal to the VK HR Tek news module. I also automated analytics collection across both portals and reverse-engineered a Lexical-based editor to preserve rendering and interactivity.

At MAXBITSOLUTION LLC, I developed the Django backend for PayGO and built a system to process transaction notifications from SMS, push notifications, and Telegram. I resolved a vulnerability that could allow unauthorized closure of deposit requests and optimized API endpoints and SQL queries by an average of 20x.

Experience

Work history, roles, and key accomplishments

Software Engineer

Staff-Hub LLC

Aug 2025 - Aug 2026 (1 year)

Delivered backend development for multiple clients under an outstaffing model. Automated migration of over 6,170 news items, built analytics collection, and automated per diem calculations.

Python Django REST APIs SQL Windows NTLM Lexical EDM Automation

Backend Engineer

MaxBitSolution LLC

Oct 2024 - Aug 2025 (10 months)

Developed the Django backend for PayGO, a P2P processing platform. Designed a system for parsing transaction notifications, resolved a critical vulnerability, and optimized API endpoints and SQL queries by 20x.

Python Django REST APIs SQL PostgreSQL P2P SMS Push Notifications Telegram Pytest Unit Testing Agile Scrum

Lead Backend Developer

Kod Bezopasnosti LLC (Code of Security)

Sep 2023 - Dec 2023 (3 months)

Developed backend features in Django for the Continent TLS server, ensuring correct certificate export and automated reissuance. Fixed logging bugs, implemented localization, and increased test coverage from 70% to 90%.

Python Django TLS Certificate Authority SSL Testing Localization Telegraf

Software Engineer

CITIS (Center for Information Technologies and Systems of Ex

Mar 2023 - Sep 2023 (6 months)

Rewrote legacy PHP services into a modern stack (Python, Django, DRF, PostgreSQL, Celery, Redis, React) for tracking world-class research centers. Built report generation, moderator cabinets, and optimized database query speed by 10x.

Python Django DRF PostgreSQL Celery Redis Gunicorn Nginx Docker React Redux SQL ORM PDF .DOCX

Software Engineer

Freelance

Oct 2018 - Mar 2022 (3 years 5 months)

Developed web applications and microservices, writing advanced raw SQL queries and integrating with external services. Built web scrapers, customized Django admin panels, and applied machine learning techniques across numerous freelance projects.