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Billernest MainaBM
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Billernest Maina

@billernestmaina

Geospatial Data Scientist turning spatial data into actionable insights for measurable impact.

Kenya
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What I'm looking for

I’m looking to apply geospatial intelligence and data science to solve real-world challenges and strengthen decision-making. I want to build dashboards, automate workflows, and deliver measurable impact across development, environmental, and public health work.

I’m a Geospatial Data Scientist with expertise in GIS, spatial analysis, field data collection, and remote sensing. I turn complex geospatial and non-spatial datasets into actionable insights that strengthen decision-making.

I’ve supported large-scale programs through data verification, electronic data collection (ODK-based systems), GPS mapping, and rigorous data-quality audits across multiple counties. I collaborate with multidisciplinary teams and translate field findings into clear technical summaries and reports for program improvement.

In my recent work, I built and analyzed datasets of 50,000+ records using SQL, Python, Excel, and PowerBI to identify funding gaps, service coverage trends, and equity issues. I also develop interactive performance-monitoring dashboards for near-real-time learning and apply machine learning techniques (regression, classification, NLP, and unsupervised learning) through my current Data Science studies.

Experience

Work history, roles, and key accomplishments

CC

Technical & Research Analyst

Clinton Health Access Initiatives (CHAI)

Dec 2024 - Dec 2025 (1 year)

Supported field-based monitoring and implementation research for the national CHIS program across 10+ counties to strengthen community-level disease surveillance and reporting. Conducted data verification and routine quality audits, using ODK-based electronic data collection to submit high-quality quantitative data to centralized servers.

DU

Data & Research Analyst

Development Initiatives (UK)

Mar 2023 - Sep 2024 (1 year 6 months)

Conducted mixed-methods implementation research combining 50,000+ record quantitative datasets with stakeholder interviews and field validation to assess health and social-sector program performance. Built and analyzed datasets in SQL, Python, Excel, and Power BI, developing interactive performance monitoring dashboards for near-real-time learning.

KU

Motor Vehicle Electrician Intern

Kenyatta University

May 2023 - Jul 2023 (2 months)

Diagnosed and repaired automotive electrical systems by installing and troubleshooting components including alternators, starter motors, wiring, horns, lights, and turn signals. Performed maintenance on battery and charging systems, inspected electrical connections, and replaced relays, fuses, and circuit breakers.

WA

Geospatial Data Analyst

Water Resources Authority

Jul 2017 - Sep 2017 (2 months)

Collected spatial data from field stations and created maps, performing analysis of streamflow and water quality data. Updated monthly water resources registers and produced Lake Naivasha–Nakuru sub-region maps using ArcGIS 10.5, including data entry of RGS discharge, rainfall, and evaporation.

Education

Degrees, certifications, and relevant coursework

ALX Africa logoAA

ALX Africa

Data Science Program, Data Science

2025 -

Built end-to-end data analysis workflows using Python, SQL, Power BI, and Google Sheets. Cleaned, prepared, and analyzed datasets, designed MySQL databases for analytics, and applied machine learning models for regression, classification, NLP, and unsupervised learning.

KK

Kenya Christian Industrial Training Institute (KCITI)

Motor Vehicle Electrician (MVE), Motor Vehicle Electrical Systems

Studied and practiced diagnosing and repairing automotive electrical systems. Installed and troubleshot wiring and components such as alternators, starters, alarms, horns, lights, and performed testing and maintenance on batteries and charging systems.

Egerton University, Njoro-Main Campus logoEC

Egerton University, Njoro-Main Campus

Bachelor of Science (B.Sc.), Geography

2014 - 2018

Earned a B.Sc. in Geography. Covered core geography studies during undergraduate coursework.

MC

Miramar International College

Business Management Certificate, Business Management

Completed training in business management, including identifying market opportunities, challenges, and associated risks. Developed skills in planning timelines and budgets, conducting market research, and analyzing agricultural-industry trends to support business decisions.

ALX Africa logoAA

ALX Africa

Data Analysis Program, Data Analysis

Analyzed and visualized complex datasets using Excel, Power BI, and Python to generate actionable insights. Built and queried relational databases with MySQL, designed datasets and dashboards, and applied data cleaning and transformation techniques.

KS

Kiburu Boys High School

Kenya Certificate of Secondary Education (KCSE), Secondary Education

2011 - 2013

Completed secondary education leading to the Kenya Certificate of Secondary Education (KCSE).

Tech stack

Software and tools used professionally

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