Data Analyst — Lagos, Nigeria

Ulasi Chukwuma Obinna.

I'm a Data Analyst working in Excel, SQL, PostgreSQL, and Power BI, with a background in front-end development, graphic design, and video editing that sharpens how I think about turning raw, scattered information into clear, business-ready insight.

B.Sc. graduate (Second Class Honours, Upper Division), University of Benin. TechyJaunt Data Analytics Bootcamp, 3 months, hands-on projects, not just theory.

"The best solutions happen where data, technology, and creativity meet."
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Ulasi Chukwuma Obinna
How I Work

I clean, question, and correct data before I trust it enough to act on it.

Excel, SQL, and Power BI, applied to real business questions, not just tutorials.

Real correction, from a live project
Reported hybrid price premium: 83%→29%, recalculated from source data

The source report defined the metric one way and calculated it another. I caught the gap before it went on a dashboard. Full story below.

Skills

What I actually work with, not a list of buzzwords.

Data & Querying

  • SQL (PostgreSQL)
  • pgAdmin4
  • Python fundamentals
  • Jupyter Notebook

Visualisation & BI

  • Power BI
  • DAX
  • Power Query (M)
  • Star Schema Modelling
  • Drillthrough & Slicers

Excel & Methods

  • VLOOKUP / XLOOKUP
  • INDEX / MATCH
  • SUMIF / SUMIFS / COUNTIFS
  • Data Cleaning & Validation
  • Data Storytelling
Projects

Two case studies. Both checked against the raw data, not just the source report.

Discount Motors dashboard
Power BIDAXPower QueryData Validation

Discount Motors: Hybrid & EV Sales Analysis

Analysed 6,693 used Toyota listings to test marketing's assumption that hybrid demand was too small to chase. Found hybrids already hold 30.5% of sales, second only to Petrol, and built a diagnostic Power BI dashboard around the real, same-model price premium instead of a misleading aggregate figure.

Caught & CorrectedThe source report defined the price premium using median price, but its stated result of 35% only reproduces using mean price. Recalculating with the documented method gave 29%, not 35%, and the dashboard was built on the corrected number.
View on GitHub → Read on Medium →
TomaLink pilot dashboard
Power BIData CleaningMarket ResearchDashboard Design

TomaLink: Reducing Post-Harvest Tomato Losses in Nigeria

Worked as one of six Data Analysts on a 30-person hackathon team building a platform to cut Nigeria's tomato post-harvest losses, currently 40 to 45% of the national harvest. Sourced and cleaned the 5,000-row pilot dataset, and validated every figure on the final dashboard against raw data before it reached a slide.

Research that shaped the productResearched seven existing agricultural platforms before proposing a direction. Twiga Foods in Kenya nearly collapsed trying to own its own farms, trucks, and warehouses, a direct case for why TomaLink connects existing stakeholders instead of owning the chain itself.
View on GitHub → Read on Medium →
Design Work

Analysis is one half of the work. Communicating it clearly is the other.

Graphic design work created for TrinityPad, a crypto and fintech platform, as part of my role as Community Manager & Graphic Designer.

TrinityPad Digital Yuan Yields campaign graphic
TrinityPad — "Digital Yuan Yields" campaign graphic
TrinityPad Yen Rails Global Flow campaign graphic
TrinityPad — "Yen Rails, Global Flow" campaign graphic
Certificates

Verified learning, not just a list of course names.

Power BI for Beginners
Microsoft · Simplilearn — 6 June 2026 — Code 10315554
Verify
Excel Dashboard for Beginners
Microsoft · Simplilearn — 26 May 2026 — Code 10273824
Verify
Data Analyst 101
Microsoft · Simplilearn — 27 May 2026 — Code 10273942
Verify
Introduction to MS Excel
Microsoft · Simplilearn — 23 May 2026 — Code 10262230
Verify
TechyJaunt Data Analytics Bootcamp
3-month program — Excel, SQL, Power BI, Python
In progress
Experience

Where the work has actually happened.

Nov 2025 — Present
Front-End Developer
Crown Chemical Investment Limited — view site →
Designed and built the company's official website with HTML, CSS, and JavaScript, translating stakeholder requirements into functional, responsive pages.
Sept 2024 — June 2026
Community Manager & Graphic Designer
TrinityPad
Managed online community engagement and designed marketing graphics and promotional materials for campaigns and social media. See examples above.
Jul 2022 — Aug 2023
Sales Manager
Crown Chemical Investment Limited
Managed daily inventory operations, conducted routine stock reconciliations, and coordinated product branding and distribution.
2025
B.Sc., Second Class Honours (Upper Division)
University of Benin
Contact

Let's work together.

ulasistanley1@gmail.com +234 703 974 4486 LinkedIn GitHub Medium