Okoli Tochukwu

Backend Engineer with 1+ years of experience building scalable, production-grade systems in C# and ASP.NET Core. Specialises in Clean Architecture, multi-tenant SaaS platforms, and payment gateway integrations. Proven track record delivering reliable, well-tested APIs in fast-paced Agile teams — most recently improving API response times by 20% and leading a framework upgrade from .NET 8 to .NET 10.

Backend Engineer at ChurchPlus (2024-12 – Present) • Architect and maintain scalable backend services using ASP.NET Core and EF Core, following Clean Architecture and domain-driven design principles.

• Design and implement secure RESTful APIs supporting asset management, member dashboards, and multi-tenant data isolation.
• Lead integration of multiple third-party payment gateways, implementing webhook handling, transaction validation, and secure API communication using HttpClient.
• Refactored and upgraded the application from.NET 8 to.NET 10, improving performance, maintainability, and framework alignment.
• Implement background services and workflow automation for notifications and scheduled processes.
• Write and maintain comprehensive unit tests using NUnit, reducing production defects and ensuring deployment confidence.
• Participate in architectural decisions, peer code reviews, and CI/CD improvements within an Agile/Scrum development team.
• Improved API response time by 20% through targeted optimisation of database queries and middleware configuration.

Bachelor of Science in Computer Science – Federal University of Technology Owerri (2023)