Open to opportunities

Loyiso Nelani

@loyisonelani

Lead Software Engineer and Azure Solutions Architect delivering secure, scalable .NET microservices for financial services.

South Africa

Message

What I'm looking for

I’m looking to lead cloud-first .NET platform modernization—designing secure microservices, mentoring engineers, and driving CI/CD, observability, and resilient APIs in highly regulated financial environments.

I’m a Microsoft-certified Azure Solutions Architect, Azure Administrator, and DevOps Engineer with 14+ years in enterprise software engineering, architecture, and technical leadership. I build scalable, high-performance systems with .NET 8, ASP.NET Core, clean architecture practices, CQRS, and Azure cloud services.

As a Lead Software Engineer at Old Mutual Investment Group, I led architecture and delivery of enterprise-grade investment systems, defining cloud-first roadmaps and modernising platforms with Clean Architecture and Domain-Driven Design. I designed JWT-based security layers, implemented microservices with the Ocelot API gateway, and oversaw Azure DevOps CI/CD pipelines—while optimising SQL Server performance and improving observability and logging.

Earlier, at PPECB, I led a team of 5 developers, introduced CQRS to boost performance, and improved automated testing and deployment automation while resolving complex production issues. I’ve also developed enterprise banking modules, REST APIs, and mobile solutions (including a Xamarin app generating over R1 million in revenue), and I’m known for strategic, hands-on mentoring that raises engineering excellence.

Experience

Work history, roles, and key accomplishments

Current

Senior .NET Engineer

Current

Investec Bank

Mar 2026 - Present (3 months)

Design and build scalable, high-performance transactional banking systems using .NET and microservices. Implement Azure services and production security with JWT and Microsoft Entra ID while contributing to Azure DevOps CI/CD and mentoring engineering team members.

.NET ASP.NET Core Microservices Azure Services Azure Functions Azure Service Bus JWT Azure DevOps SQL Server

Lead Software Engineer

Old Mutual Investment Group

Apr 2023 - Feb 2026 (2 years 10 months)

Led architecture and delivery of enterprise investment systems with a cloud-first roadmap. Implemented Clean Architecture and DDD, secured APIs with JWT, applied Ocelot API gateway patterns, oversaw Azure DevOps CI/CD, and improved performance and observability while mentoring developers.

.NET 8+ASP.NET Core Clean Architecture Domain Driven Design Ocelot JWT Azure Cloud Services Azure DevOps Observability

Lead Developer

PPECB

Feb 2019 - Mar 2023 (4 years 1 month)

Led a team of 5 developers delivering critical perishable-product inspection systems. Designed service-oriented architectures, introduced CQRS to improve performance, increased automated testing and deployment automation, optimized SQL Server reliability, and developed a Xamarin mobile app generating over R1 million in revenue.

ASP.NET Core CQRS SOLID Azure DevOps SQL Server Ocelot Integration Testing Xamarin Performance Optimization

Senior Software Developer

Haefele Software

Nov 2017 - Feb 2019 (1 year 3 months)

Developed enterprise banking modules and REST APIs, including Oracle migration scripts. Improved performance and automated test coverage through code reviews, stakeholder collaboration, and support for production deployments and critical defects.

ASP.NET MVC C#REST APIs Oracle Automated Testing SQL Git Code Review Performance Optimization

Software Developer

DirectAxis

Mar 2017 - Oct 2017 (7 months)

Built Angular loan application interfaces and integrated them with backend APIs. Implemented validation and security checks, optimized backend services and UI performance, and mentored junior developers through peer reviews.

Angular ASP.NET C#SQL Server Performance Optimization Mentoring

Developer

Spur Group

Sep 2013 - Apr 2015 (1 year 7 months)

Developed ERP and financial reporting systems and built an HR performance review platform. Integrated FNB and Sage batch systems, created Windows services using TopShelf, strengthened application security, and optimized SQL queries while supporting mobile integrations and business-critical enhancements.