Data Analyst · Nairobi, Kenya

Benard
Mwinzi

Turning raw data into real decisions

Python · SQL · Tableau · Excel, 4+ years delivering analytical insights for international clients across HR, finance, and operations. Currently seeking a full-time data analyst role.

See my projects Get in touch
Benard Mwinzi
4+Years freelancing
8Client projects
5Analysts mentored
5Portfolio projects
On Upwork ↗
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8 Jobs completed
★
5.0 Rating (3 reviews)
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Rising Talent Badge
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Available for hire
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Benard is an outstanding and fast freelancer. Their expertise and efficiency are truly remarkable. They delivered exceptional results, met tight deadlines, and maintained excellent communication throughout the project. I highly recommend Benard for their exceptional skills and professionalism.

★★★★★ 5.0 · Excel project · May 2023 · Upwork verified
Work

Selected projects

Five end-to-end analyses spanning banking, hospitality, real estate, payments, and sales — real data, real tools, real findings.

XYZ Bank Digital Customer Journey Dashboard
Python MySQL Tableau
01
XYZ Bank — Digital Customer Journey Analysis
End-to-end banking analytics across 2,000 customers. Only 19.6% remained active by year-end. Ksh 1.58B revenue at risk identified from churn and dormancy.
View full analysis →
Hotel Booking Analytics annual performance chart
Python Pandas Seaborn
02
Hotel Booking Analytics: Revenue Drivers & Customer Behaviour
EDA of 66,541 bookings (2010–2019). Top markets, age segments, discount strategy, and SGD 13.3M revenue breakdown across 10 years.
View full analysis → 
UPDATE housing_data
SET SoldAsVacant = CASE
  WHEN SoldAsVacant IN('Yes','Y')
  THEN 'Y' ELSE 'N'
END;
-- Self-join imputation
JOIN housing_data b
  ON  a.ParcelID  = b.ParcelID
  AND a.UniqueID <> b.UniqueID
WHERE a.PropertyAddress='';
✓ 56,477 rows · 0 lost · 6 issues resolved
SQL MySQL Data Engineering
03
Nashville Housing, SQL Data Cleaning & Analysis
End-to-end SQL pipeline for 56,477 housing records. Self-join imputation, address decomposition, PII removal, zero rows lost across 8 validated steps.
View full analysis →
Adventure Works Excel Dashboard
Excel DAX Power Pivot
04
Adventure Works MS-Excel Dashboard
Two interactive dashboards across $307M revenue, 4 years, 606 products. Power Pivot data model, DAX measures, VBA macros, and interactive slicers.
View full analysis →
Kenya Mobile Money growth chart
Python Tableau EDA
05
The Rise of Digital Payments in Kenya
End-to-end analysis of Kenya's digital payments ecosystem (2007–2026) using Central Bank data. Mobile Money grew 500×, POS rose 4→42%, card usage fell post-COVID.
View full analysis →
About me

Analyst.
Problem Solver.

Benard Mwinzi
Benard Mwinzi Data Analyst · Nairobi, Kenya

I am a data analyst based in Nairobi, Kenya, with a BA in Economics and Mathematics from Machakos University and a Google Data Analytics Certificate. I specialise in transforming raw data into clear, actionable insights.

Over 4+ years of freelance work on Upwork, I have delivered dashboards, benchmarking reports, and data visualisations for international clients across HR, operations, and business analytics.

Beyond analysis, I served as a Data Analytics Mentor at Blossom Academy in Ghana, guiding five graduates into their first freelance data careers. I am currently seeking a full-time data analyst role where I can apply these skills to drive real business decisions.

PythonSQLTableau ExcelMySQLPower Pivot DAXEDAA/B Testing Data Storytelling
📊

Data-driven storytelling

Translating complex datasets into clear narratives that non-technical stakeholders can act on.

🌍

Local domain expertise

Deep knowledge of African markets, from Kenya's digital payments ecosystem to regional economics.

🎓

Teaching & mentorship

Guided 5 junior analysts into paid freelance careers through structured coaching and proposal writing.

🤝

Client-focused delivery

8 completed Upwork projects for US and European clients with focus on clarity and timely communication.

Capabilities

Skills & tools

A full-stack analytical toolkit built across 4+ years of real client work.

Languages

Python
SQL
DAX

Visualisation

Tableau
Matplotlib
Seaborn

Tools

MS Excel
Power Pivot
MySQL

Analytical

EDA
A/B Testing
Storytelling
Background

Experience &
education

Work experience
Mar 2025 – Jun 2025
Data Analytics Mentor
Blossom Academy · Ghana
Mentored five analytics graduates into their first freelance careers. Guided profile building, proposal writing, and landing first gigs through a structured programme.
Oct 2023 – Jan 2024
Data Analyst
Knoetic, Inc. · United States
Analysed employee attrition data from 630 startup respondents across the US and Europe. Delivered a benchmarking report with 19 visualisations covering attrition by company size, remote status, and demographics.
Jan 2021 – Present
Data Analyst (Freelance)
Upwork ↗
8 diverse data analysis projects for international clients, dashboards, benchmarking reports, ER diagrams, and data visualisations across HR, operations, and business analytics.
Education
May 2022 – Jan 2023
Google Data Analytics Certificate
Google / Coursera
Professional certification covering spreadsheets, SQL, Tableau, and data storytelling. Completed all eight courses including the Cyclistic capstone project.
View credential
Sep 2015 – Apr 2022
BA Economics and Mathematics
Machakos University · Kenya
Interdisciplinary degree combining economic theory with statistical and mathematical techniques. Minor in Statistics and Sociology.
Get in touch

Let's work
together

I'm open to full-time data analyst roles and interesting freelance projects. Reach out via any channel below or send a message directly.

@
Emailbenardmwinzi73@gmail.com
☎
Phone+254 728 900 958
in
LinkedInbenard-musyoka1234
GH
GitHubgithub.com/BenaData
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