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Charles Nzioki

Charles Nzioki

Data Science and Statistics Professional

Talent
NairobiMember since August 22, 2026
Data Quality AssuranceReport WritingKobo CollectMicrosoft ExcelPower BISPSS
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Data Quality AssuranceReport WritingKobo CollectMicrosoft ExcelPower BI

About

Research and data professional, 2+ years' experience in supporting research, monitoring and evaluation, field data collection, statistical analysis, and report writing in health, agriculture and community development projects. Skilled in designing and conducting surveys, literature review, handling qualitative and quantitative data, and interpreting and summarizing research into actionable reports. Well versed in R, SPSS, Microsoft Excel, Power BI, Kobo Collect and data quality assurance, and with a focus on evidence-based research, attention to detail and delivering quality work products in tight deadlines.

Experience

Sales Analyst at Easy Reach Automobiles Ltd (2025-06 – 2026-07)

  • Interpret and use data related to customers, operations and sales to inform business decisions.
  • Ensure high standards of data quality and accuracy through clean, validate and maintain datasets.
  • Create analytical reports and dashboards in Microsoft Excel and Power BI.
  • Analyze customer behavior and market trends to inform strategic decision making.
  • Create reports and presentations to management.
  • Work with other cross-functional teams to offer recommendations on operational improvement through data.

Data Clerk at Makueni Dairy Farmers Association (2024-01 – 2025-12)

  • Accurately maintained and updated records of milk production, inventory, customer orders, and supplier transactions across all operations.
  • Processed and systematized daily operations data for effective reporting and decision making. When milk delivery and stock data is entered accurately and timely into digital systems, it results in a streamlined workflow and improved operational efficiency.
  • Liaised and managed supplier relationships to monitor and regulate inventory levels, guaranteeing the availability of stock.
  • Supported quality assurance of dairy operations by identifying data trends and discrepancies in analytical reports.

Enumerator at National Value Chain Development Project, Ministry of agriculture (2024-04 – 2025-05)

  • Duly identified the boundaries of enumeration areas and provided household listings with 100% completion rate resulting in a successful enumeration of more than 500 households.
  • Utilized Kobo Collect for gathering high quality agricultural data, improving productivity analysis at the farmer level and data-informed decision making.
  • Registered local farmers using the Know Your Farmer (KYF) app, enhancing farmer access to agricultural inputs, services, and government support.
  • Successfully handled and delivered all data collection materials ensuring 100% adherence to data integrity protocols during field activities.

Data Assistant (Intern) at County Health Department (2023-04 – 2023-08)

  • Supported analysis of patient records, disease prevalence data, and healthcare outcomes to inform planning and delivery of public health interventions.
  • Collaborated with epidemiology teams to track disease patterns and identify high-risk zones using R and SPSS.
  • Conducted data cleaning and preprocessing of large datasets, ensuring compliance with healthcare data standards and accuracy protocols.
  • Developed reports and dashboards using Excel and Power BI, enhancing visibility of healthcare service delivery and disease outbreak trends.

Polling Clerk / Counting Clerk at Independent Electoral and Boundaries Commission (IEBC) (2022-08 – 2022-08)

  • Verified and processed over 500 voters using the Kenya Integrated Election Management System (KIEMS), maintaining 99% accuracy rate.
  • Managed voter queues and supported individuals with special needs, reducing wait times and ensuring inclusive access to polling services.
  • Participated in accurate sorting and counting of ballots, maintaining 100% accuracy rate and supporting electoral transparency.
  • Ensured proper ballot handling and documentation, contributing to the integrity and smooth execution of the 2022 General Elections.

Education

Bachelor of Science in Biostatistics – Jomo Kenyatta University of Agriculture and Technology (JKUAT) (2020-01 – 2024-12)

Skills

Data Science and Statistics Professional

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