Manqoba Ngubeni
@manqobangubeni
C#/.NET developer at iOCO who improved API response times and helped rebuild an offline-capable field app.
South AfricaWhat I'm looking for
At iOCO, I develop and maintain C#/.NET Web APIs for mobile and web applications, and improved response times by moving heavy processing into SQL stored procedures and tuning queries. I also helped lead a Xamarin-to-.NET MAUI rebuild, implementing offline SQLite storage, autosave, MVVM patterns, and API synchronisation.
At CSG International, I built and supported REST and SOAP/XML APIs for telecom billing and related systems, and helped reduce recurring MultiChoice billing errors by approximately 40% through regression scripts and production defect fixes. I’ve also tutored programming at the University of Johannesburg and built Cura, a healthcare app connected to Python APIs and PostgreSQL.
Experience
Work history, roles, and key accomplishments
Software Engineer
iOCO
Aug 2025 - Present (1 year 3 months)
Develop and maintain C#/.NET Web APIs for mobile and web applications, including services connecting newer apps to existing .NET Framework APIs. Moved heavy processing into SQL stored procedures and tuned queries to improve response times, and helped lead a Xamarin-to-.NET MAUI rebuild.
Junior-Mid Software Engineer
CSG International
Feb 2023 - Jul 2025 (2 years 5 months)
Built and supported Java REST and SOAP/XML APIs connecting telecom billing, USSD, mobile apps, and CRM systems. Became a go-to engineer for difficult API integration issues, and used Linux/Bash regression scripts to help reduce recurring billing errors by approximately 40%.
Software Development Tutor
University of Johannesburg
Feb 2022 - Nov 2022 (9 months)
Supported students with programming exercises, object-oriented design, algorithms, and troubleshooting in C# and Python.
Education
Degrees, certifications, and relevant coursework
University of Johannesburg
BCom Honours, Information Systems
2024 - 2025
Pursued a BCom Honours in Information Systems with research on plant disease detection using deep learning.
University of Johannesburg
Advanced Diploma, Business Information Technology
2023 - 2023
Grade: 70% average
Completed an Advanced Diploma in Business Information Technology with a 70% average.
University of Johannesburg
Diploma, Business Information Technology
2020 - 2022
Activities and societies: 2nd Year Best Software Project Award
Completed a Diploma in Business Information Technology and received the 2nd Year Best Software Project Award.
AWS
AWS Certified Cloud Practitioner, Cloud Computing
Earned the AWS Certified Cloud Practitioner certification.
Udemy
The Complete JavaScript Course, JavaScript
Completed The Complete JavaScript Course.
Udemy
Java + REST API with Spring Boot, Java
Completed the Java + REST API with Spring Boot course.
Udemy
Machine Learning A-Z, Machine Learning
Completed the Machine Learning A-Z course.
Udemy
C# Programming Course, C#
Completed the C# Programming Course.
Coursera
Python & the Operating System, Python
Completed the Python & the Operating System course.
Coursera
Git and GitHub, Git
Completed the Git and GitHub course.
Udemy
Ionic React, Ionic React
Completed the Ionic React course.
Availability
Location
South AfricaAuthorized to work in
Salary expectations
Job categories
Interested in hiring Manqoba?
You can contact Manqoba and 600K+ other talented remote workers on Himalayas.
Message ManqobaGet matched with your dream remote job
Sign up now and join over 1,000,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
