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onwumelu kingsely

@onwumelukingsely

Message

I build scalable .NET APIs, integrations, and financial reporting systems.

Nigeria

Message

I'm building backend services for Foodease at fusionintel.io, a high-traffic multi-tenant restaurant and food delivery application.

I develop .NET Web APIs for restaurant operations, including POS workflows, daily sales-balancing calculation engines, and automated financial reporting for diverse tenants.

I've integrated delivery and rider APIs from Glovo and Chowdeck to automate real-time dispatch and order tracking. I also work with messaging APIs, WhatsApp bots, and webhook listeners for asynchronous processing.

I optimize database queries and indexes for tables with more than one million records, and use pagination and data splitting to reduce payload size, memory use, and server latency.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Fusionintel

Oct 2025 - Present (1 year)

Engineered and maintained backend services for a multi-tenant restaurant and food delivery application using .NET Web API. Integrated third-party delivery APIs, optimized database queries for large datasets, and designed financial calculation engines for daily sales balancing.

.NET Web API C#SQL LINQ EF Core Swagger Scalar AutoMapper Security Identity Authentication Blazor Middleware Multi tenant architecture Third Party Integrations Database Optimization Performance Engineering Financial Logic Reporting

Education

Degrees, certifications, and relevant coursework

FreeCodeCamp

Certificate, Computer Science

2021 - 2023

Completed comprehensive project-based training in .NET Web API development, covering C#, asynchronous programming, and relational databases.

University of Benin

Bachelor of Science, Biochemistry

2017 - 2022

Earned a Bachelor of Science in Biochemistry from the University of Benin.

SoloLearn

Certificate, Computer Science

2020 - 2021

Completed a practical, project-based foundation in object-oriented programming, data structures, and foundational algorithms using C# and .NET methodologies.