Mels arstamyan

I build backend systems in Python for real commercial use—CRM panels for client, task, and analytics management, plus a taxi fleet management platform used by 3000+ active users.

On the integrations side, I’ve worked with messaging APIs like WhatsApp, Instagram, and Threads to automate communication workflows, including payment modules with Swagger/OpenAPI documentation.

For data and infrastructure, I use PostgreSQL and MySQL, optimized Django ORM queries, and shipped services with Docker, Git, and CI/CD via GitHub Actions. I’ve also built online stores with catalogs, shopping carts, and order APIs.

At Halper.ai, I developed AI tools and RAG systems using LangChain—chains, agents, tools, memory modules, retrieval pipelines, and vector search—while integrating LLMs for response generation and business process automation.