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ApusBerliozi/README.md

Hi, I'm Roman 👋

Senior Python Backend Developer — Microservices / Fintech / Product

Backend developer with 5+ years building high-load fintech and product systems in Python. Focused on microservices, system integrations, and backend that moves business metrics — not just tickets closed. Actively contribute to the Python OSS ecosystem: submitting patches to FastStream (async framework for Kafka/RabbitMQ/NATS/MQTT event-driven services) and Dishka (DI framework for Python), and maintain pyfenn, an ML/DL workflow-automation framework of my own.

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🔧 About

  • 🏦 Currently building microservices at LIME, a high-load fintech product (~1500 RPS) — anti-fraud & credit-scoring integrations for loan disbursement
  • 🧩 Specialize in microservices architecture, async Python, and system integrations
  • 🌱 Open-source contributor to FastStream and Dishka
  • 🛠 Maintainer of pyfenn, a personal open-source project
  • 💬 Ask me about: FastAPI, Django, async Python, message queues, backend architecture for fintech
  • 📫 Reach me at: romanrabota602@gmail.com or Telegram @roman28341

🧰 Tech Stack

Languages & Frameworks Python FastAPI Django Starlette

Database PostgreSQL SQL

Async & Messaging asyncio aiohttp asyncpg RabbitMQ FastStream

DevOps & Tooling Docker Linux GitLab CI/CD pytest Sentry

💼 Experience Highlights

LIME — Python Backend Developer · High-load Fintech (1500 RPS) · 2024 – 2026

  • Designed microservices (FastAPI, Django) integrating anti-fraud and credit-history providers for loan disbursement
  • +10% loan approval rate via ML scoring integration · +5% loan disbursement volume via offer-logic optimization
  • Improved Sentry-based monitoring, cutting incident response time; code reviewer for a team of ~10

InstallBiz — Python Backend Developer · Startup, Production · 2023 – 2024

  • Built a FastAPI backend for technical-drawing generation; optimized CPU-heavy operations with multiprocessing
  • Sped up the auto-layout (nesting) algorithm 10x
  • Implemented G-code generation for CNC machines and integrated with "MoySklad" for order sync

LAMA Group — Python Backend Developer · Retail · 2021 – 2023

  • Built microservices (Starlette) and external API integrations, incl. the "LENTA" API
  • Automated employee-management processes and promo-code campaign logic
  • Designed PostgreSQL database schemas

🐍 Contribution Snake

github-snake

🎓 Tomsk State University (TSU) — Bachelor's in Biology  |  🌐 English B2

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