06/05/2026 updated

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Senior AI Engineer | RAG Pipelines | Agentic Systems | LLM Infrastructure

Beltinci, Slovenia
Worldwide
M.S. in Computer and Information Science, University of Ljubljana
Beltinci, Slovenia
Worldwide
M.S. in Computer and Information Science, University of Ljubljana

Profile attachments

Nik_Adzic_CV.pdf

About me

Senior AI Engineer with 10+ years of software engineering experience. Specialized in AI agents, RAG systems, LLM infrastructure, AWS, GCP, Python, FastAPI, React, and cloud architectures. Experienced in building production-grade AI applications, automation platforms, and financial AI solutions.

Artificial Intelligence Markup Language (AIML)
Agentic AI Systems & RAG Pipelines
Expertise in designing and building production-grade agentic systems using LangGraph, LangChain, and RAG pipelines with LlamaIndex and vector search (Qdrant) for financial and data-intensive use cases.

LLM Fine-Tuning & Inference
Hands-on experience fine-tuning reranker and generative models (Qwen) using Unsloth and HuggingFace, evaluating adapter-based models, and deploying GPU inference with vLLM for optimized throughput and latency.

Backend Development & API Engineering
Proficiency in building scalable backend systems with Python, FastAPI, and Node.js, including deployment on Docker, GCP Cloud Run, and AWS for high-availability production environments.

Vector Search & Reranking
Experience with vector search technologies such as Qdrant and reranking models for domain-specific retrieval and ranking tasks in financial AI applications.

Observability & Evaluation
Utilization of Langfuse and DeepEval for RAG and end-to-end testing, ensuring quality and reliability of AI pipelines in production.

Cloud Infrastructure & DevOps
Deployment and management of cloud infrastructure using Docker, GCP Cloud Run, AWS, Supabase, and Runpod for scalable and cost-efficient AI and backend systems.

Frontend & Full-Stack Development
Development of scalable frontend applications using React, GraphQL, TypeScript, and Jotai, supporting complex operational and booking workflows.

Data Engineering & Pipelines
Design and implementation of data pipelines and PostgreSQL-backed systems for real-time analytics, logistics, and AI-driven recommendation workflows.

Multi-Agent Orchestration
Building multi-agent systems with classification, routing, tool-calling, and feedback loops for equity research, analysis, and financial AI workflows.

Experience

Professional experience10+ years
Freelancer since2017

Languages

GermanGoodEnglishFluentSerbianFluentSlovenianNative speaker

Project history

Senior AI Systems Engineer (Contract)

Exta Labs
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.

Project: Agentic Hedge Fund (LangGraph, RAG, FastAPI)

GitHub Repo (Personal Project)
Built multi-agent equity analysis system spanning fundamental, technical, sentiment, and valuation workflows. Designed LangGraph-based orchestration with classification, routing, tool-calling, and feedback loops. Implemented RAG pipeline for structured financial retrieval using LlamaIndex and vector search (Qdrant). Integrated market and macro APIs; deployed backend with FastAPI, Docker, and GCP Cloud Run.

Project: Fine-Tuning & Inference for Financial LLM Systems

GitHub Repo (Personal Project)
Fine-tuned reranker models for finance-specific retrieval and ranking tasks. Built generative fine-tuning workflow for Qwen using Unsloth and HuggingFace. Evaluated adapter-based models for inference quality, cost, and serving efficiency. Deployed GPU inference with vLLM, optimizing throughput and latency.

Senior Software Engineer

Whoosh
Built production systems for a vertical SaaS platform serving 400+ golf clubs. Developed scalable React and GraphQL applications supporting bookings, operations, and staff workflows. Designed and implemented an AI layer for intelligent booking and operational workflows using LLM-driven agentic systems.

Founder (Exited / Operated)

Perfeqt
Built and scaled a wellness platform with 140,000+ products sold. Led product, engineering, and full-stack platform development across e-commerce, logistics, analytics, and operations. Developed early AI-driven systems and agentic workflows for data analysis and recommendations.

Tech Lead

Zerogrocery (Bay Area / Remote)
Led a team of 7 engineers building a logistics and delivery platform. Scaled the company from 4 to 100 employees and designed backend and data systems for real-time delivery operations.

Senior Software Engineer

Garten (YC16)
Built internal and customer-facing applications during scale-up from 50 to 450 employees.

Senior Software Engineer

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

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