Data Analyst & BI Specialist | Economics & Finance | Nairobi, Kenya

I turn businesses and financial data into decisions. SQL, Power BI , Excel, and Python. Available for remote roles worldwide.

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Turning Data Into Strategic
Business Decisions

I combine Economics & Finance academic training with hands-on data analytics — so I don't just describe what happened in the data, I explain why it happened and what the business should do next.

Data Analysis

Cleaning and exploring datasets to surface patterns, inefficiencies, and growth opportunities using Excel, SQL, and Python.

Business Intelligence

Designing multi-page Power BI dashboards with star schemas, DAX measures, and bookmark navigation for executive reporting.

Financial Analytics

Analyzing audited financial data using IFRS-adjusted frameworks to identify anomalies, trends, and CFO-level insights.

Economic Insights

Applying macroeconomic reasoning to interpret market conditions, policy impacts, and business performance in African markets.

Business Analytics Case Studies

Every project follows: business problem → data preparation → analysis → insights → recommendations. Each one is structured the way a consultant would present to a client.

Excel Superstore Sales Analysis Dashboard — Carlton Waiti
Completed

Excel Superstore Sales Analysis

Business question: Which product categories, regions, and customer segments are driving profit and which are destroying it?
Key finding: Furniture's discount strategy was eroding margins despite high revenue. Tables segment had negative profit margin.

Excel Advanced PivotTables KPI Dashboard 9,994 rows
Olist SQL E-Commerce Analysis
Rated 9.5 / 10

Olist SQL E-Commerce Analysis

Business question: Which seller categories generate the most revenue, and how does delivery performance impact customer satisfaction?
Key finding: Late deliveries correlated directly with 1-star reviews. Top 10 sellers drove 23% of total revenue.

PostgreSQL 17 CTEs Window Functions LAG() DENSE_RANK()
Excel Superstore Sales Analysis Dashboard — Carlton Waiti
Rated 9.1 / 10

Olist Power BI Executive Dashboard

Business question: How do we give leadership a single view of e-commerce performance across orders, revenue, delivery, and customer satisfaction?
Key finding: 5-page executive dashboard with PARALLELPERIOD YoY comparisons revealed Q4 seasonal revenue spikes.

Power BI Star Schema 10 DAX Measures PARALLELPERIOD AVERAGEX
Safaricom SQL Financial Analysis
Rated 9.6 / 10

Safaricom SQL Financial Analysis

Business question: What does 10 years of Safaricom's audited financials reveal about revenue composition, margin trends, and strategic risk?
Key finding: Identified Ethiopia IAS 29 hyperinflation gain anomaly, M-PESA COVID zero-rating inflection point, and FY2022 capex spike as strategic acquisition, not infrastructure.

PostgreSQL IFRS-Adjusted Ernst & Young Data 6 CFO Queries 3 Analytical Views
Safaricom Power BI — Carlton Waiti
Rated 9.8 / 10

Safaricom Power BI Financial Dashboard

Business question: How do we present 10 years of Safaricom's audited financials in an executive dashboard that supports CFO-level strategy decisions?
Key finding: 5-page dark-canvas dashboard with 20 DAX measures, conditional color hex formatting, YoY label measures, and bookmark navigation. Primary source: audited Ernst & Young data.

Power BI 20 DAX Measures Conditional Color Hex Bookmark Navigation Audited Data
IBM HR Analytics Dashboard
⏳ In Progress

IBM HR Analytics Dashboard

Business question: What employee attributes and departmental patterns are driving attrition, and what is the true cost to the organization?
Approach: Power BI with cost-of-attrition DAX measure, 5-page executive dashboard, attrition segmentation by role and tenure.

Power BI HR Analytics DAX Attrition Cost 5-Page Dashboard

All projects are fully documented on GitHub

SQL scripts, DAX measures, data models, and written analysis; everything is open and reviewable.

github.com/Carl-ctrl-design

Economics Background.
Analytics Execution.

I'm Carlton Waiti — a BSc Economics & Finance student at Kenyatta University, Nairobi. My path into data analytics was anything but linear.

Before I ever opened Power BI or wrote a SQL query, I was out in the field collecting and analyzing data for research initiatives backed by UNICEF and the ILO, managing data integrity across hundreds of structured surveys, and translating raw field findings into reports that shaped real policy decisions. That experience taught me something most analysts learn much later: data is only as valuable as the decision it enables.

I now apply that thinking to business analytics. My Economics & Finance background means I don't just describe what happened in the data — I explain why it happened and what the business should do next.

What makes me different: I identified the Ethiopia IAS 29 hyperinflation gain anomaly in Safaricom's financials, the M-PESA COVID zero-rating inflection point, and the FY2022 capex spike as a strategic acquisition — not just numbers on a page.

Experience

Freelance
Freelance Data Analyst & Web Developer
Jul 2024 – Present · Nairobi, Kenya (Remote)

Provide freelance data analytics and web development services to small businesses and entrepreneurs across Nairobi and remotely. Financial Analysis, Data Analysis.

UDPK / UNICEF / ILO
Data Enumerator & Field Analyst
Aug 2025 – Oct 2025 · Nairobi, Kenya

At UDPK, in partnership with UNICEF and ILO, contributed to a UNPRPD-backed research initiative on disability inclusion in climate action across Nairobi communities. Used KoboToolbox and ODK. Outputs were policy-facing.

UNICEF Kenya
Data Enumerator
Jul 2025 – Aug 2025 · Nairobi, Kenya

Conducted structured surveys across multiple Nairobi communities as part of UNICEF's national disability inclusion research program. Managed data integrity across hundreds of records.

KUDHEIHA Workers Union
Field Data Analyst
Jun 2025 – Jul 2025 · Kasarani, Nairobi

Supported labor conditions research for domestic workers and caregivers across Nairobi as part of a union-led advocacy initiative. Data Analysis, Research Analysis.

Flekc Freight & Logistics
Finance Account Associate
Dec 2023 – Oct 2024 · Ruiru, Kiambu, Kenya

Managed financial reporting, variance analysis, and compliance for a growing freight and logistics operation in the greater Nairobi area. Financial Accounting, Cash Flow, +10 skills.

Truce Lounge
Accountant
May 2022 – Jan 2023 · Nairobi, Kenya

Managed payroll support, budgeting, and expense tracking. Produced routine summaries for management to support purchasing, vendor follow-up, and cash control.

Education

Kenyatta University
BSc Economics & Finance
Sep 2022 – Jun 2026 (Expected)

Specialising in quantitative economic analysis, financial modelling, and data-driven decision-making. Engaged in research-based fieldwork through partnerships with UNICEF and ILO. Building a portfolio of real-world analytics case studies focused on business performance, customer analysis, and financial insights.

Analytics Toolkit

Skills assessed against real delivered projects, not self-reported. Ratings from independent project reviews.

Core Tools

Advanced Microsoft Excel Advanced

PivotTables, Power Query, XLOOKUP, KPI dashboards, data cleaning. 9,994-row retail sales project delivered.

SQL / PostgreSQL Proficient

CTEs, window functions, LAG(), DENSE_RANK(), analytical views, 10 business queries. Olist project rated 9.5/10.

Power BI + DAX Advanced

Star schema, 20 DAX measures, PARALLELPERIOD, AVERAGEX, DATEDIFF, conditional color hex, bookmark navigation. Safaricom project rated 9.8/10.

Python Developing

Pandas, Matplotlib, Jupyter Notebook. Demand forecasting project in progress using Superstore dataset.

My edge: Economics & Finance academic foundation applied to every analysis. I explain the business reasoning behind the numbers, not just the numbers themselves.

Certifications

Google Data Analytics
Coursera / Google
✓ Completed
UNITAR Budgeting for SDGs
UNITAR
✓ 2025
Microsoft PL-300 Power BI
Microsoft
⏳ May 2026
HackerRank SQL Certificate
HackerRank
⏳ In Progress

What I Deliver

Data Cleaning
Remove duplicates, handle nulls, standardize, build tidy datasets ready for analysis
SQL Analysis
Extract, join, aggregate, and window-function data to answer business questions
BI Dashboards
Executive dashboards: KPIs, trends, drill-down filters, YoY comparisons
Recommendations
Turn analysis into actions: where to focus, what to fix, expected impact

Let's Work Together

Open to remote Data Analyst roles, freelance analytics work, and meaningful collaborations. Email and LinkedIn are the fastest channels.

Email
Best for hiring inquiries and formal communication
LinkedIn
View my full profile and career history
GitHub
All project code, SQL scripts, and documentation
WhatsApp
Best for quick follow-ups and freelance conversations
Available for Remote Work
Response within 24 hours · Nairobi EAT (UTC+3)
Professional communication · documented results

Send a Message

Share the role, project, or objective. I'll respond within 24 hours.

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