Anatoly Rozhkov

Babilonia is a personalized horoscope platform delivering daily and weekly AI-powered predictions across multiple life categories.

1) Built and deployed the full backend infrastructure, integrating LLM providers, payment processing, and subscription management for an international user base.

2) Architected full FastAPI backend from scratch, covering auth, subscription management, payment processing, and core business logic.

3) Integrated multiple LLM providers (OpenAI, Grok) to generate personalized astrological predictions from raw calculations.

4) Optimized LLM latency by pre-generating predictions in background tasks and parallelizing computation steps asynchronously.

5) Integrated payment providers across multiple regions, enabling seamless transactions for an international customer base.

6) Achieved full test coverage of critical business logic including auth, subscriptions, and payment flows.

7) Built a custom pytest fixture replicating Django's django_db for FastAPI, isolating each test in a clean database transaction.

8) Deployed and managed production infrastructure on DigitalOcean, including VPS, database clusters, and object storage.

9) Integrated OAuth2 authentication with Google and Instagram for seamless user onboarding.

Mos.ru is the official digital platform of the Moscow city government, providing residents and businesses with online access to municipal services including document processing, healthcare, education, business licensing, city news, and tourism information. Projects I worked at: RussPass Magazine and Discover Moscow portal

russpass .ru
discover .moscow

1) Led full-scale Django-Wagtail redesign, delivering 150ms response times including for resource-rich articles.

2) Built a self-regenerating cache system handling thousands of pages, edge cases including deletions, moves, and hierarchies - ensuring content is always served pre-processed.

3) Built an image processing pipeline with automated rendition generation, resolving a race condition in concurrent image rendering via thread-safe cache operations.

4) Optimized API performance with raw SQL queries, bypassing slow Wagtail block queries and eliminating N+1 issues.

5) Owned microservice communication via Kafka and RabbitMQ, extending consumer DTOs to handle evolving schemas while maintaining backward compatibility.

6) Collaborated with non-technical stakeholders to shape requirements, advocating for efficient solutions and driving technically sound decisions.

7tech is a fintech platform helping financial institutions offer loans and installment plans for smartphones and wearable devices. Its products enable banks and lenders to expand their reach across customer devices while increasing revenue, improving operational efficiency, and reducing risk.

1) Progressed from Junior to Middle Engineer, taking on increasing ownership of architecture and performance work over the course of the engagement.

2) Engineered a distributed FastAPI/Django application handling 84, 000+ concurrent devices at peak throughput of 250 RPS using RabbitMQ

3) Designed and integrated APIs between web/mobile applications, third-party services, and internal backend systems.

4) Applied strategic indexing and raw SQL to fine-tune query performance, resolving N+1 problems and cutting database response times

5) Offloaded CPU-bound tasks to background workers using Celery and Redis, scheduling heavy operations during off-peak hours to maintain response times and prevent request rejections at scale

6) Built 800+ integration test suite from scratch covering 90%+ of business logic at 0% flake rate, reducing production errors by 90% and increasing development speed by 40%.

Outsourced project for Schneider Electric: HR Platform with global deployment

Worked on a Django-based HR CRM covering end-to-end employee lifecycle management: payroll, vacation scheduling, business trip compensation, vehicle tracking, and staff rotation