Novi Sad, Serbia
Goran Ljiljak
Power BI Developer · Data Engineer · Data Analyst
“Data is like coffee — unprocessed, it’s just a bean. My job? Brewing it into something that keeps your business running!”
About Me
I am a Power BI Developer and Data Consultant based in Novi Sad, Serbia, with over 10 years of experience working across data, reporting, and business systems.
My focus is on turning complex data into clear, actionable reports and dashboards that help businesses make better decisions. I specialise in Power BI report development and service administration, data modelling, and building reporting solutions that people actually use.
My background spans the full data stack — from SAP ERP systems and SQL databases, through data engineering with Python and Google Cloud Platform, to front-end reporting in Power BI. That combination lets me understand a business problem at every layer, from the raw data source to the executive dashboard.
I am fluent in Serbian, English, and German, which allows me to work effectively with international teams and clients across Europe.
If you are looking for someone to build, improve, or take ownership of your Power BI reporting — let’s connect.
Services
Power BI Report Development
Building clean, fast, and user-friendly Power BI reports and dashboards tailored to your business needs. From initial data connection to a polished, published report.
Power BI Service Administration
Managing your Power BI Service environment — workspaces, permissions, dataset refresh schedules, capacity monitoring, and gateway configuration.
Data Modelling & Optimisation
Designing and restructuring data models for performance and maintainability. Star schema implementation, DAX optimisation, and Power Query transformation pipelines.
Dashboard Audits & Performance Fixes
Diagnosing slow or unreliable Power BI reports and fixing them. Full audit of the data model, DAX measures, and query performance with a clear action plan and implementation.
Work With Me
I take on a limited number of side projects alongside my main role. If you need a Power BI expert who can hit the ground running — let’s talk.
Skills & Technologies
Reporting & BI
- Power BI Desktop & Service
- Excel
- Power Query
- Power Platform
Programming & Data
- Python
- SQL
- Pandas
Cloud & Infrastructure
- Google Cloud Platform
- BigQuery
- Docker
- REST APIs
- SAP HANA
Microsoft · 2026 · PL-300
Microsoft Certified: Power BI Data Analyst Associate
Validates the ability to design and build scalable data models, clean and transform data, and enable advanced analytic capabilities that provide meaningful business value through easy-to-comprehend Power BI visualizations.
Work Experience
Power BI Developer
Mahle
Data Engineer
Gorilla Sports Balkans d.o.o., Novi Sad
Data Engineer
Remade d.o.o., Novi Sad
SAP Support Consultant
Remade d.o.o., Novi Sad
Data Analyst
New Plant d.o.o., Novi Sad
Recent Posts
View all →June 6, 2026
Copilot in Power BI: What It Actually Does Well (and Where It Still Falls Short)
An honest, hands-on assessment of Microsoft Copilot in Power BI in 2026 — what works, what does not, and whether it is worth enabling for your team.
June 6, 2026
From SAP Consultant to Data Engineer: How I Made the Transition
A personal account of transitioning from SAP consulting to data engineering — what skills transferred, what I had to learn from scratch, and what I wish I had known earlier.
June 6, 2026
Power BI vs Tableau vs Looker in 2026 — An Honest Comparison from the Field
A practical, experience-based comparison of Power BI, Tableau, and Looker in 2026. Learn which BI tool fits your team, stack, and budget — without the marketing fluff.
Get In Touch
I am always open to discussing new projects, Power BI challenges, or just connecting with people in the data space. Feel free to reach out through any of the channels below.