Team

The people behind Expert Group.

A small, senior team organised into three functions that work together every day — matrixed, without silos. All functions report directly to the director, and specialists are assigned per project and named in the proposal.

Leadership

Nikola Jeremić

Co-Founder · CEO · Principal Architect. Lead architect of a HIPAA-aligned mental health EHR system — 10+ microservices and atomic permissions management, cutting the cost of onboarding a clinic by 60%. Eight years in BIG4 consulting — Senior Manager at EY, Manager at KPMG. Six Microsoft certifications, including Fabric Analytics Engineer.

Dev

Custom enterprise software: web applications, integrations and operational platforms.

Lead

Aleksandar Gucunja

Team Lead · Dev

Vukašin Vulović

Software Developer

Works with: Data / AI · Shared functions

Nikola Ivezić

Software Developer

Aleksandra Perkucin

BA Lead

Works with: Data / AI · Shared functions

Daria Rakkad

Power Platform Developer

Tatjana Grigorijev

Developer
Data / AI

Data, BI and AI: Microsoft Fabric, semantic models, Power BI and on-premise LLM systems.

Lead

Stefan Seman

Acting Team Lead · Data & AI

Darko Simić

Lead Data Engineer

Borivoj Grujičić

Data Engineer · author of Elusion

Works with: Dev · Shared functions

Dušan Simonović

AI Developer

Jakov Vidojević

BI Engineer

Dragan Rončević

Junior BI Engineer
Shared functions

Business development, human resources and accounting — support across the whole of delivery.

Viktor Jaćović

Business Development Manager

Svetlana Savić

Head of HR

Ana Rabrenović

Lead Accountant

Vasilije Pavićević

Accountant