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Дмитрий User

@user243

Message

Python backend developer building high-load APIs and fault-tolerant systems, leading teams to deliver faster.

Russian Federation

Message

What I'm looking for

I’m looking for a Python backend role where I can own architecture for high-load APIs, improve reliability and observability, and optimize PostgreSQL/ClickHouse and data pipelines. I enjoy teamwork, clean design, and using AI tools to ship faster.

I’m a Python Backend Developer (Middle+) and Acting Team Lead, currently working with a team of 8 where I own technical direction—architecture, code review, and sprint planning. I’ve designed and delivered 20+ microservices and 4 large APIs (100+ endpoints each), including building a 125-endpoint API solo in 25 work days.

I focus on high-load reliability: I developed an API hitting 7K rps in load testing, and after a Celery refactor I improved live notifications uptime from 95% to 99.9%. I optimize databases and data pipelines end-to-end—cutting a geo nearest-point query from 4s to 0.5s with PostgreSQL indexes, accelerating processing for ~1 TB GRIB files, and using OpenTelemetry plus Docker-based infrastructure to keep systems observable and fault-tolerant.

Experience

Work history, roles, and key accomplishments

Current

Python Developer / Acting Team Lead

Current

2 Yr IT Laboratory

Jun 2024 - Present (2 years 1 month)

Designed and delivered 20+ microservices and 4 large APIs, including building a 125-endpoint API solo in 25 work days. Developed high-load APIs (7K rps in testing), live notifications (Redis Pub/Sub, Celery, SSE) with uptime improved to 99.9%, and optimized PostgreSQL geo-queries (4s to 0.5s).

Python Backend Developer (Freelance)

Databases Independent Projects

Jan 2022 - Jun 2024 (2 years 5 months)

Sole backend developer for a US-market order marketplace, owning architecture and production delivery from PostgreSQL schema design to implementation. Built geolocation-based contractor matching, integrated Stripe payments and Twilio phone verification, and implemented role-based access using OAuth2 and JWT.