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Blessing Leso

@blessingleso

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I build reliable data pipelines and Power BI dashboards that turn business data into operational insight.

South Africa

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What I'm looking for

I'm looking for Data Analyst, Data Engineer, or Business Intelligence Developer opportunities where I can build reliable data solutions, develop ETL pipelines and reporting dashboards, and turn business requirements into actionable insights.

At Synergy Wellness ZA, I optimized data cleaning with Pandas to reduce retrieval time by 40%, built Power Query ETL workflows, and designed monthly operational Power BI dashboards using DAX and relational data models.

I'm a Business Information Technology graduate with Microsoft certifications in Azure Data Fundamentals, Power BI, Power Automate RPA, and Fabric Data Engineering. I've also developed REST API reporting integrations, supported business requirements, and built Python-based predictive modelling and analytics projects.

Experience

Work history, roles, and key accomplishments

Data Analyst Intern

Synergy Wellness ZA

Jan 2025 - Dec 2025 (11 months)

Optimized data cleaning using Pandas, reducing data retrieval time by 40%. Designed interactive Power BI dashboards and built ETL workflows to support operational reporting.

Pandas Power BI DAX Power Query SQL REST APIs JSON Odoo Data Cleaning ETL

Development Software Student Assistant

University of Johannesburg

Aug 2023 - Nov 2023 (3 months)

Tutored students on IT concepts including Object-Oriented Programming, JavaScript, HTML, MySQL, and C#. Developed and maintained Python and JavaScript applications and facilitated communication between students and lecturers.

JavaScript HTML MySQL C#Python SDLC Communication Skills

Data Capturer & Examination Assistant

Department of Higher Education and Training

Jul 2019 - Nov 2019 (4 months)

Assisted in the administration of examination processes, ensuring adherence to guidelines and quality assurance. Controlled, distributed, and scanned examination scripts.

Data Entry Quality Assurance Administration

Education

Degrees, certifications, and relevant coursework

University of Johannesburg

BTech, Business Information Technology

2025 -

Pursuing a BTech in Business Information Technology, with coursework in software requirements, software testing, advanced databases, advanced programming, and human-computer interface.

University of Johannesburg

Diploma, Business Information Technology

2020 - 2023

Completed a Diploma in Business Information Technology, covering systems software, development software, information systems, business analysis, and communication networks.

Hoërskool Staatspresident CR Swart

National Senior Certificate, General

2014 - 2018

Completed the National Senior Certificate with subjects including English, Afrikaans, Mathematics, Physical Sciences, Information Technology, and Business Studies.