Data Engineer — Microsoft Fabric & Databricks Specialist

I turn messy data
into pipelines people
can actually trust.

4+ years building production ELT pipelines and medallion lakehouses on Azure, Fabric, and Databricks. Top Rated Plus on Upwork, 100% Job Success across 10+ engagements.

Bronze

Raw ingestion

Land data as-is from APIs, ERPs, and event sources — nothing thrown away.

Silver

Cleaned & validated

Deduplicated, typed, tested — the layer every downstream job can rely on.

Gold

Business-ready

Curated marts feeding Power BI, forecasts, and same-day decisions.

Bronze — the raw material

About me

I'm a data engineer who's spent the last four years living inside medallion architectures — building the bronze-to-gold pipelines that let a company stop trusting spreadsheets and start trusting a dashboard.

I led the on-premise-to-Azure migration for Bosch Srbija's e-commerce data, cutting pipeline runtime by 30% and automating 90% of what used to be manual work. Since 2023 I've run my own freelance practice on Upwork, shipping Fabric and Databricks pipelines across insurtech, e-commerce, fitness, and SaaS clients.

What I actually enjoy is the unglamorous middle of the stack: the silver layer, the tests that catch a broken feed before a stakeholder does, the pipeline that just runs every morning without anyone thinking about it.

4+years building production data pipelines
30%faster pipeline execution after Bosch Azure migration
90%of manual transformation steps automated
25%improvement in data quality from testing frameworks
100%Upwork Job Success Score, Top Rated Plus
Silver — refined & validated

What I work with

Cloud & Platforms

  • Microsoft Fabric
  • Azure Databricks
  • Azure Data Factory
  • Cosmos DB
  • BigQuery
  • OneLake

Programming & Query

  • Python (PySpark, Pandas, Scikit-Learn)
  • SQL
  • DAX
  • M (Power Query)

Data Engineering

  • ETL / ELT pipeline design
  • Medallion architecture
  • Delta Lake & lakehouse
  • Automated testing, CI/CD

Analytics & BI

  • Power BI
  • Looker Studio
  • Tableau
  • Google Analytics
  • Odoo API integration
Gold — curated & business-ready

Featured projects

Case studies below are placeholders — swap in real write-ups as you finish each build.

FabricPySpark

Medallion Lakehouse Pipeline

End-to-end bronze/silver/gold pipeline on Microsoft Fabric, ingesting raw sales data and publishing a tested, query-ready gold layer.

case study — add write-up
DatabricksPython

Customer Churn Prediction

A churn model trained on synthetic subscription data, built and scored inside Databricks, surfaced back into a Power BI risk dashboard.

case study — add write-up
SQLPower BI

Revenue & Retention Dashboard

Near real-time KPI dashboard tracking revenue, CLTV, and churn from a SQL warehouse, replacing a weekly manual export process.

case study — add write-up
BigQueryGA

Marketing Attribution Pipeline

SQL-based BigQuery pipeline pulling Google Analytics events into a ROAS and channel-performance model.

case study — add write-up
Verified

Certifications

Microsoft Fabric Data Engineer Associate (DP-700)
Microsoft
Azure Data Fundamentals (DP-900)
Microsoft
Google Data Analytics Professional Certificate
Coursera
Azure Databricks & Spark for Data Engineers
Udemy
Azure Data Factory for Data Engineers
Udemy
Machine Learning A-Z: Python + AI
Udemy

Let's build your pipeline.

Open to freelance data engineering work and full-time roles — Fabric, Databricks, Azure, or a lakehouse migration you've been putting off.

© 2026 Igor Kocić. Built with data, coffee, and one too many Spark jobs.