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changelia/README.md

Hi, I'm Leva 👋

Full-Stack Software Engineer · Backend & AI Systems

Python · FastAPI · Node.js · NestJS · TypeScript · React · Next.js · PostgreSQL · Redis


👨‍💻 About Me

I'm a Full-Stack Software Engineer with 6+ years of commercial experience, focused on building scalable web applications, backend systems, APIs, and AI-powered products.

My strongest area is backend engineering, while I work comfortably across the full stack — from database and system architecture to modern React and Next.js applications.

I focus on:

  • Building scalable APIs and backend services
  • Designing reliable application architectures
  • Developing full-stack web applications
  • AI / LLM integrations and agentic systems
  • Async processing, background jobs, queues, and caching
  • Database design and performance
  • CI/CD and production deployments

🛠 Tech Stack

Backend

Python FastAPI Node.js NestJS TypeScript

Frontend

React Next.js JavaScript

Databases & Infrastructure

PostgreSQL Redis MongoDB Docker GitHub Actions AWS

AI / LLM

OpenAI APIs · LLM Integrations · RAG · AI Agents · LangChain · Structured Outputs · Tool Calling


⚙️ Engineering

Backend        REST APIs · Async Processing · Background Jobs
               Caching · Authentication · WebSockets

Frontend       React · Next.js · TypeScript

Data           PostgreSQL · Redis · MongoDB

AI             LLM APIs · RAG · Agents · AI Search

Infrastructure Docker · CI/CD · AWS · GitHub Actions

Architecture   Scalable Systems · API Design · System Design

🎯 Current Focus

I'm currently expanding my work around AI-native software engineering, combining traditional full-stack development with:

  • LLM application architecture
  • RAG and vector search
  • AI agents and tool calling
  • AI evaluation and observability
  • Distributed and event-driven systems
  • System design and scalability

💼 Open to Opportunities

I'm open to Full-Stack, Backend, and AI Engineering opportunities where I can work on production systems, scalable APIs, modern web applications, and AI-enabled products.


📫 Connect

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