Backend Developer (Ruby on Rails / Python) with commercial experience in building SaaS products and data-intensive backend systems.
- Backend development with Ruby on Rails and Python
- Design and implementation of REST APIs
- Data-intensive systems: scraping, ETL, document processing
- Search systems based on Elasticsearch
- Background jobs and async processing (Sidekiq, Celery)
- Integration of AI / LLM (OpenAI API) into backend services
- AI-based classification and data extraction (NER)
- Document processing and enrichment using LLMs
- RAG-based backend services (vector search + LLM)
- AI used as part of backend systems, not as research
Backend: Ruby on Rails, Python, Django, FastAPI
Async: Sidekiq, Celery, Redis
Databases: PostgreSQL, PostGIS
Search: Elasticsearch (custom indices, analyzers, synonyms)
AI / LLM: OpenAI API
Infra: Docker, Kubernetes (deployments), GitHub Actions
Frontend: Vue.js, HTML, CSS
- Maribor, Slovenia
- English — Upper-Intermediate
- Slovenian — Basic (conversational)
- Russian / Ukrainian — Native
- GitHub: https://github.com/MaxxxZu