Nikolas

PROFESSIONAL SUMMARY
Backend Developer with hands-on experience in Python and Node.js, building
scalable web applications, REST APIs and working with relational and non-relational
databases. Skilled in system design, data processing, Al integrations, and DevOps
practices. Passionate about solving complex problems and developing efficient,
reliable backend solutions.

EXPERIENCE
Nicholas Al Document Search System FastAPI . PostgreSQL . pgvector . Docker

Personal Project | 2024 - 2025
Backend Developer
Developed a backend service with FastAPI for indexing and semantic search
Building scalable backend solutions of documents (text, files, URLs).
with Python, Node.js and modern Implemented text classification and embeddings generation for content-based
technologies. search.
Used PostgreSQL with pgvector for storing and searching similar documents.
Deployed with Docker for easy scaling and local development.
[open contact info](look above in the "contact info" section)

[open contact info](look above in the "contact info" section) Crypto Exchange Backend Node.js . PostgreSQL . Redis . Docker . JWT

github.com/kolia1995 Personal Project | 2024 - 2025

Ukraine / Remote
Built REST API for user registration, authentication, wallets and cryptocurrency
trading.
Implemented JWT authentication and Redis-based sessions.
Integrated external market APIs for real-time trading operations and P2P
TECH SKILLS exchange.
Designed transactional workflows for secure financial operations.
Used Docker for containerization and deployment.
Languages

Python JavaScript TypeScript
Telegram Al Agent Python . FastAPI . LLM . PostgreSQL . Redis
Personal Project | 2024 - 2025
Backend Frameworks
Developed a Telegram bot with Al agent using Groq / OpenAl-compatible models
FastAPI Node.js Express.js Implemented short-term and long-term memory, RAG search for contextual
answers.
Databases Added intent recognition and integration with external APIs
Used modular architecture (NLP, memory management, tool execution).
PostgreSQL MongoDB Redis

SQL (advanced)
KEY SKILLS & TECHNOLOGIES
DevOps & Infrastructure

Docke Kubernetes Linux

CI/CD Git GitHub Kafka

SOFT SKILLS
Problem solving
Team collaboration
Clean code & best practices
Time management
ADDITIONAL INFORMATION
Fast learning
GitHub: github.com/kolia1995
Availability: Full-time / Part-time / Remote
LANGUAGES
Goal: Grow as a backend developer, work on scalable
Ukrainian -- Native systems, and contribute to innovative products.
English -- B1 (Intermediate)
Romanian -- A1 (Learning)