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Sisasenkosi Nyathi

@sisasenkosinyathi

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I maintain accurate data records, validate datasets, and build reliable reports using Excel, SQL, and Power BI.

South Africa

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What I'm looking for

I'm looking for a remote data administration or analytics role where I can maintain accurate records, validate data, build reliable reports, and continue developing my SQL and Power BI skills.

I've maintained accurate CRM and database records while supporting data administration, quality checks, and reporting across remote projects.

At AnalystLab Africa, I structured sales data in SQL Server, wrote queries to reconcile business data, and cleaned retail datasets by handling missing values, duplicates, and format validation.

I built and maintained an interactive Power BI dashboard for Superstore sales, profit, and regional reporting, cross-checking figures across multiple views. I also built an ETL pipeline using the OpenWeather API, producing a validated, audit-ready CSV file.

Through independent virtual assistant practice and an ALX Africa placement, I've kept Zoho CRM, HubSpot, Google Workspace, inboxes, calendars, and document systems accurate and current. I bring a methodical approach to documentation, version control, and catching errors before they reach a report.

Experience

Work history, roles, and key accomplishments

Data Specialist Volunteer

AnalystLab Africa

Jul 2026 - Aug 2026 (1 month)

Imported and structured a sales database in SQL Server, writing queries to reconcile and report on business data. Cleaned and standardized datasets, built a Power BI dashboard, and developed an ETL pipeline for an OpenWeather API project.

SQL SQL Server Data Cleaning Data Validation Power BI ETL Data Reconciliation Data Analysis

Virtual Assistant

Independent Practice

Nov 2024 - Apr 2026 (1 year 5 months)

Maintained and updated core CRM records and Google Workspace databases, ensuring client and contact data accuracy. Ran regular checks on inbox, calendar, and document systems to catch and fix errors.

Zoho CRM HubSpot Google Workspace Data Entry

Excel Data Analysis

Self-Directed Practice Project

Feb 2026 - Mar 2026 (1 month)

Cleaned and prepared a Superstore retail dataset to 99.9% data completeness, then built Pivot Tables and used filters to cross-check sales figures. Completed a structured beginner Excel training module using a real Jumia Nigeria e-commerce dataset.

Excel Pivot Tables Data Cleaning Data Validation Data Analysis

Virtual Assistant

ALX Africa Program Placement

Jun 2024 - Oct 2024 (4 months)

Carried out data entry and record management using Google Workspace and Microsoft Office, alongside inbox and calendar administration. Completed the ALX Virtual Assistant training program.

Google Workspace Microsoft Office Data Entry Records Management Inbox Management Calendar Management