Data Analysis and Visualization
Pitchside Pro Revenue Performance Dashboard
Build an executive dashboard that answers what is driving revenue performance over time and where the business should focus next to sustain growth.
Explore the projectIndependent practice / Data & intelligenceVienna, Austria
Data Analyst & Power BI Specialist
Clear thinking.
Useful data.
Data analysis, business intelligence, and reporting systems. I turn complex information into a clear view of what comes next.
Open to employment & freelance projectsScroll to explore ↓
01 / Capabilities
A question.
A way forward.
Data Analysis & Reporting
Transform raw data into actionable insights through advanced analysis and business reporting.
ETL & Data Cleaning
Prepare reliable, accurate, and analysis-ready datasets through professional ETL and data quality processes.
Analytics Web Solutions
Custom web-based analytics solutions that bring data, dashboards, and insights together in one platform.
SQL Data Analysis
Extract valuable business insights directly from databases using advanced SQL analysis techniques.
Forecasting & Trend Analysis
Predict future outcomes using historical data, forecasting models, and trend analysis.
Dashboard Automation
Automate reporting workflows, dashboard refreshes, and business intelligence processes.
Power BI Dashboards
Custom Power BI dashboards for sales, finance, operations, executive reporting, and business intelligence.
02 / Selected work
From raw data
to something useful.
Natural Language Processing NLP
Enron Emails Dataset Analysis
Analyze email communication patterns, message volume, important senders, recipients, and common topics from a real-world email dataset.
Explore the project
Data Analysis and Visualization
Demographic Data Analyzer
Use Python to analyze demographic data and answer clear questions about income, education, work patterns, and population groups.
Explore the project03 / Working approach
Good work starts
with better questions.
A practical approach, from the first conversation to the next update.
- 01 /
Clarify
Define the decision, the audience and the questions the work needs to answer.
- 02 /
Prepare
Check sources, clean the data and make assumptions explicit.
- 03 /
Analyse
Explore patterns, build measures and test the reasoning behind the result.
- 04 /
Communicate
Turn the findings into a clear dashboard, explanation or recommendation.
- 05 /
Maintain
Document the logic, add checks and make the next update easier.
04 / Experience
Zain Haidar
I’m Zain, a data analyst based in Vienna. I bring together business intelligence, SQL, Python, and software engineering to prepare data, investigate patterns, and build useful reporting workflows.
2022–Present
Data Analyst
Upwork / Freelance
2019–2021
Data Analyst
FBM Solutions
2017–2019
Software Engineer
Fiverr / Freelance
Tools & capabilities
Business Intelligence & Visualization
Cloud & Tools
Data Analysis & Modelling
Data Engineering & ETL
Soft Skills
Continuing development
Udemy
Databricks Associate Developer, Apache Spark
Kaggle
Data Visualization
freeCodeCamp
Data Analysis with Python
05 / Notes
Ideas worth
thinking through.
AI & Data · 3 min read
GPT‑6.1 Sol puts model routing back on the agenda
The new Sol release raises a practical question: which tasks deserve the strongest model, and which simply need a dependable, economical answer?
Read article
AI & Data · 3 min read
Claude Sonnet 5.5: the number data teams should measure
Anthropic’s latest Sonnet update makes a useful distinction: cheaper work is not always cheaper tokens. Here is how to evaluate it against actual analytical tasks.
Read article
AI & Data · 3 min read
OpenAI Dots: delegation needs a job description
An always-on agent needs more than a clever prompt. OpenAI’s Dots launch brings ownership, permissions and review into the centre of the workflow.
Read article06 / Contact
A new role.
A new data challenge.
Open to employment & freelance projects
zainhaider72@gmail.com