Hi there 👋 I'm Maria

Senior Backend Engineer with 9+ years building systems that survive production.
I've maintained 99.999% uptime on real-time, high-concurrency platforms processing critical transactions.

Languages change. Distributed systems don't.

🚀 What I'm building right now

• mini-langfuse — OpenTelemetry tracing for LLM apps. FastAPI + async + pytest + PyPI client (soon).
• RAG system — LangChain + pgvector + FastAPI (coming this month).

⚙️ Core stack

Backend: Python · FastAPI · Node.js · TypeScript ·NestJS
Data: PostgreSQL · Redis · Kafka · RabbitMQ
Cloud: AWS (ECS, RDS, S3, Lambda) · Docker · CI/CD
Quality: TDD · Jest · pytest · DDD

🌱 Currently

• Deepening Python async, FastAPI, OpenTelemetry
• Building public packages for PyPI
• Learning RAG + vector databases

💡 What I've learned the most from

• High-availability user registration systems in iGaming (99.999% uptime).
• Event-driven pipelines processing 10,000 documents at 38 docs/s with zero failures.
• End-to-end design and deployment of microservices on AWS.

📫 Find me

LinkedIn · Blog