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Backend-developer (8++ years) with a strong focus on Python and with production microservices experience. Skilled in asynchronous and multiprocessing data processing. Commercial experience in building a full-cycle startup (AI-powered app builder) with FastAPI/React.js/Web3³…

Egor Fedosov

Back-End Developer, Full Stack Developer, DevOps Developer, +2

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Backend-developer (8++ years) with a strong focus on Python and with production microservices experience. Skilled in asynchronous and multiprocessing data processing. Commercial experience in building a full-cycle startup (AI-powered app builder) with FastAPI/React.js/Web3³…

Available to hire

Backend-developer (8++ years) with a strong focus on Python and with production microservices
experience. Skilled in asynchronous and multiprocessing data processing. Commercial
experience in building a full-cycle startup (AI-powered app builder) with FastAPI/React.js/Web3³

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Work Experience

Co-Founder & CTO at AI Constructor

March 1, 2022 - March 1, 2026

Co-founded AI Constructor and led backend and platform development. Built Python/FastAPI/Alembic-based backends for handling views, clicks, and subscriptions; created front-end tooling with ReactJS and KonvaJS; designed on-chain/off-chain blockchain referral systems with signature verification on smart contracts; deployed Kafka with replication for publish/subscribe; implemented content generation via OpenAI API; produced AI-powered reports and analytics; set up monitoring with Prometheus and Grafana; cached profile data in Redis; optimized PostgreSQL queries; packaged microservice functionality; established dynamic app infrastructure (Nginx/CDN/VP API); deployed MinIO for object storage; automated security tooling; led DevOps practices.

Senior Specialist, Automation of Security Systems

January 1, 2017 - February 1, 2022

Led backend modernization and DevOps initiatives: Docker with RabbitMQ task queue for resource parsing (Selenium/Playwright); added asynchronous I/O-bound endpoints; migrated from Django (DRF, ORM) to FastAPI (SQLAlchemy/Alembic); wrote 100+ unit tests with pytest; migrated legacy code using multithreading, NumPy, and Cython extensions; supervised a team of 3 developers; built Celery workers for CPU-bound reports and signature processing; implemented monitoring/alerting with PyQt/WebSocket; migrated from SQLite to PostgreSQL+Redis; configured GitLab CI for multiple microservices; built an ELT pipeline processing ~1 TB of data daily with PySpark and Pandas/Polars; improved system reliability and response times.