Hi, I'm Nik 👋

Senior AI Systems Engineer building production AI systems end-to-end - from RAG and agent orchestration to fine-tuning, evaluation, inference, and deployment.

Focused on agentic workflows, LLM evaluation, and scalable AI infrastructure for data-intensive and financial use cases.

Experience

Exta Labs

Founder / AI Engineer

2025 - Present

London, UK

  • Designing and building production-grade AI systems across RAG, agent orchestration, and LLM inference.
  • Developing financial AI tooling including multi-agent equity research and analysis workflows.
  • Implementing fine-tuning, evaluation, and deployment pipelines for domain-specific models.

Perfeqt

Founder

2021 - 2025

Remote

  • Built and scaled wellness platform with 140,000+ products sold.
  • Led product, engineering, and full-stack platform development across e-commerce and operations.

Whoosh

Senior Software Engineer

2021 - 2026

Remote

  • Built production systems for vertical SaaS platform serving 400+ golf clubs.
  • Developed scalable React and GraphQL applications for bookings, operations, and staff workflows.

Zerogrocery

Tech Lead

2020 - 2021

Bay Area / Remote

  • Led team of 7 engineers building logistics and delivery platform.
  • Scaled company from 4 to 100 employees with backend/data systems for real-time operations.

Garten (YC16, ex Oh My Green)

Senior Software Engineer

2018 - 2020

Bay Area, CA

  • Built internal and customer-facing applications during scale-up from 50 to 450 employees.

Cherrydeck

Senior Software Engineer

2017 - 2018

Remote

  • Led frontend delivery of marketplace MVP, launched in 2 months and onboarded thousands of users.

NETCONOMY

Software Engineer

2016 - 2017

Graz, Austria

  • Built and maintained e-commerce solutions with React, Redux, and GraphQL.
  • Worked on Java and SAP Commerce (Hybris) implementations for enterprise clients.

Education

M.S. in Computer and Information Science

University of Ljubljana

Faculty of Computer and Information Science

2012 - 2015

Ljubljana, Slovenia

B.S. in Computer and Information Science

University of Ljubljana

Faculty of Computer and Information Science

2009 - 2012

Ljubljana, Slovenia

Stack

LangGraph

Agent orchestration and workflow routing

Langfuse

LLM observability, tracing, and analytics

LlamaIndex

RAG indexing and retrieval pipelines

Qdrant

Vector DB for semantic search

vLLM

High-throughput inference serving

FastAPI

API layer for production deployment

Docker

Containerized build and deployment

GCP Cloud Run

Production deployment for AI backends

Unsloth / HuggingFace

Fine-tuning workflows and model tooling

DeepEval

LLM evaluation and regression testing