SERGEY BRYZGALOV

Senior Software Engineer

Moscow, RU.
Telegram

About

Specializing in high-performance Python systems, I design and optimize scalable services using frameworks like FastAPI and Django. My expertise includes intelligent workload distribution across application logic and analytical databases (e.g., ClickHouse), consistently achieving significant performance improvements (up to 10x). I possess extensive experience in the full-cycle development of data-intensive applications, ranging from advanced NLP solutions to large-scale data processing pipelines.

Work

VK

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Senior Software Engineer

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Summary

Senior Python Backend Developer specializing in building high-performance systems, optimizing data workflows, and maintaining critical services. Led the development of NLP-powered microservices (FastAPI, spaCy) and large-scale data pipelines (ClickHouse, multiprocessing), achieving 10x faster processing of 2TB+ datasets. Automated manual reporting systems and currently maintain 5+ production services, ensuring high availability while implementing performance improvements.

Highlights

Developed a high-performance text moderation NLP service utilizing FastAPI and a custom fine-tuned spaCy model, handling over 2,000 requests per day with a p99 latency under 100ms, and successfully integrated it into the core product pipeline.

Engineered a robust data processing optimization for 2TB datasets, reducing processing time from 1 week to 15 hours through parallel batch processing in Python (Django ORM + multiprocessing) and offloading complex aggregations to ClickHouse (window functions, materialized views), ensuring balanced computational load and preventing memory bottlenecks.

Fostered cross-functional collaboration with Data, ML, and Product teams to resolve complex integration challenges, facilitated critical technical discussions, and streamlined onboarding for new developers to ensure rapid system familiarization.

United Media Agency

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Software Engineer

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Summary

Architected and implemented robust B2B automation and scalable infrastructure solutions for a high-load music aggregator platform, ensuring high availability and optimizing data retrieval.

Highlights

Architected and implemented B2B automation logic for a high-load music aggregator platform, facilitating seamless content delivery for over 10 million media files to major social and streaming platforms, achieving 99.9% uptime through asynchronous processing (Celery/RabbitMQ) and fault-tolerant design.

Designed and deployed a scalable Docker Swarm-based infrastructure, reducing deployment time by 60%, and implemented comprehensive CI/CD pipelines (GitLab CI) with integrated monitoring (Prometheus/Grafana) to optimize operational workflows.

Significantly optimized complex query performance across PostgreSQL (OLTP) and ClickHouse (OLAP) databases, decreasing data retrieval latency by 15% through advanced indexing strategies and strategic query refactoring.

Inplat technology

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Junior Developer

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Summary

Developed and enhanced critical real-time monitoring and payment processing systems, contributing to improved system stability and performance.

Highlights

Engineered a real-time service health monitoring system, integrating SMS, Telegram, and Email notifications, which successfully reduced overall system downtime by 5%.

Led a critical codebase refactoring initiative that significantly enhanced overall system performance, including a 5x reduction in report generation time via SQL refactoring.

Maintained and continuously improved payment processing services, ensuring seamless and reliable transactions for over 10,000 daily users.

Education

MIREA (Russian Technological University)

Master's Degree Information System and Technologies Grade:

Languages

Russian

Native

English

Conversational

Skills

Python

Python, Backend Development, Software Development.

FastAPI

FastAPI, API Development, Web Frameworks.

Django

Django, Web Frameworks, ORM.

SQL

SQL, Database Management, Query Optimization.

PostgreSQL

PostgreSQL, OLTP, Database Administration.

ClickHouse

ClickHouse, OLAP, Analytical Databases.

Docker

Docker, Containerization, Deployment.

RabbitMQ

RabbitMQ, Message Broker, Asynchronous Processing.

CI/CD

CI/CD Pipelines, DevOps, Automated Deployment.

Grafana

Grafana, Data Visualization, Dashboards.