Turning complex datasets into compelling visual narratives that stakeholders understand and trust. 8+ years of expertise.
Data Analyst & BI Specialist with 8+ years of turning messy, scattered business data into clean, trusted insights that leaders actually use to make decisions. I build end-to-end SQL/Python/BI solutions that eliminate manual spreadsheets, cut reporting effort by 40%, and save 16+ hours per department each month while reducing metric conflicts by 40%.
Strategy to delivery of BI solutions that work together seamlessly.
Complex data becomes compelling visual narratives stakeholders trust.
On-time delivery with measurable ROI, improved forecasting, reduced uncertainty.
Fluent in English (C1), German (B2), and Turkish (native).
Thesis: Enhancing Project Management through Machine Learning and Predictive Analytics
Best Senior Project Award – Logistics Optimization for Auto Gas Facilities
Published logistics research achieving 18% efficiency gain at Turkish auto-gas facilities.
Pro-bono project with Turkish Kidney Foundation Hospital optimizing patient admissions processes.
Selected for excellence in pharmaceutical business modeling.
Koç University – Logistics Optimization for Auto Gas Facilities.
Sharing thoughts on data analytics, business intelligence, and the intersection of technology and strategy.
A road journal through Norway, Sweden, and Denmark that reads like a reflection on what it means to build things that outlast the people who made them.
A week in Berlin, read through the lens of cognitive science and data visualisation research, where perception, representation, and ambiguity all shape the story.
Visibility isn't the hard part. Interpretation is. Why the most valuable thing an analyst can deliver isn't a cleaner dashboard but a defensible point of view.
The dashboard is green. The meeting room is tense. Both things are true. Why organizations keep arguing over "the same" numbers, and why KPI alignment is more about governance than dashboards.
Three speakers, three teams, one recurring theme: the gap between what AI promises and what your data actually supports. A recap of the Spring Data Allergy edition of Data Berlin, hosted at SumUp in Friedrichshain.
Building diverse, equitable, and inclusive data teams is not just the right thing to do — it is a strategic advantage that strengthens analytics organizations.
Real feedback from teams, product owners, and business leaders I have supported in analytics, BI, and data strategy.
"I had the pleasure of working with Birce Sarı at Zorlu Holding, where she reported directly to me in her role as a Business Analyst and Power BI Specialist. Birce consistently demonstrated strong analytical thinking, effective communication skills, and a positive attitude."
Pinar Yildiran
PMO, Enterprise Architecture & IT Governance Lead Director
"Birce was an exceptional professional in our Solution Development team, with dual expertise in both data analytics and business analysis. Her ability to extract meaningful insights from complex datasets and align them with business needs was truly impressive."
Tekin Çetin
Zorlu Holding Consultant
"Birce Sari is an outstanding Data Analytics specialist. She stood out from the rest — her questions showed deep experience, and in our Tableau course she often seemed to know the tool better than the lecturer."
Iuliia Arkadeva
Frontend-focused Fullstack Developer
I'm currently available for freelance projects. Whether you need data analysis, visualization, or consulting, I'd love to hear from you.