Martin Waichinga

“As a data analyst working across multiple countries, I specialize in transforming complex, inconsistent datasets into clear, meaningful insights. I manage regional data pipelines, ensure data quality, and standardize reporting to make sure every country’s data can be trusted and compared at scale. My work enables teams to understand performance across markets, identify growth opportunities, and make strategic decisions based on accurate, harmonized information.”

Designed and optimized relational data models in PostgreSQL to meet complex reporting needs. Built and maintained conceptual, logical, and physical data models aligned with business requirements. Improved data integrity and query performance through normalization and denormalization of large datasets. Developed ETL processes and pipelines, mapping data from source systems to staging and core layers. Designed dimension models for enterprise data warehouses using Kimball’s methodology. Partnered with business and technical stakeholders to define data standards and gather requirements. Created efficient, scalable SQL queries using CTEs, COALESCE, and other advanced functions.

Designed data collection strategies and preprocessed raw data for analysis. Performed statistical analyses, including regression and clustering, to uncover trends. Conducted ad-hoc analyses and addressed client queries to ensure satisfaction. Applied Python, R, and SPSS for research and linear regression modeling. Pursued continuous learning to stay updated on data analysis tools and techniques.

Entered and verified large datasets, ensuring accuracy and data integrity. Maintained organized filing systems for efficient data retrieval. Collaborated with teams to resolve discrepancies and exchange data seamlessly. Managed data entry tasks under tight deadlines with prioritization skills. Used [C.P.I.M.S.] for efficient data entry and retrieval. Adapted to evolving systems and requirements, maintaining high performance. Supported training for new employees to ensure smooth onboarding.

Managed all incoming and outgoing communication including emails, phone calls and personal inquiries maintaining prompt and accurate responses. Coordinated and maintained calenders for the Parish Priests, scheduling appointments, meetings and events and resolving scheduling conflicts. Entered and managed critical data and records, maintaining accuracy and accessibility for parochial use. Assisted in the setup and organization of meetings, including booking venues, arranging equipments and typing minutes.Provided exceptional customer service, addressing inquiries and ensuring positive interactions with clients, customers and visitors. Maintained confidentiality while handling sensitive documents including employee records and financial data. Utilized efficiency in office software, including Microsoft Office Suite, to streamline documentation and reporting processes.

Data entry, Data cleaning and Data Mining