Open to opportunities

Isaac Crown

@isaaccrown

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Software Engineer with 5+ years building secure, scalable C#/.NET and ASP.NET Core backend systems.

Nigeria

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What I'm looking for

I’m looking to leverage my C#/.NET backend and API security expertise to deliver scalable, well-tested products in an Agile environment—where I can keep learning, contribute to CI/CD excellence, and help grow the organization.

I’m a Professional and highly skilled software engineer with over 5 years of experience specializing in C# and ASP.NET Core. I build robust, well-performing applications that match specifications and exceed expectations, with a strong commitment to continuous learning and agile methodologies.

At Sterling Bank Plc, I designed and developed an online banking portal covering account management, transaction history, credit facilities, and data/airtime transactions. I implemented third-party API integrations for bill payments and applied security best practices including data encryption and secure API authentication protocols.

I’ve also contributed to scalable backend systems using Entity Framework, PostgreSQL/SQL, and microservices—leveraging C#, ASP.NET Core, .NET 6–8, Docker, and Azure services. I worked closely with teams across Agile sprints and helped deliver Alt Bank’s new version while aligning with Domain-Driven Design principles and maintaining strong CI/CD delivery standards.

Previously at ComplusTech Limited, I built the ChurchPlus multi-tenant application and improved administrative workflows through an intuitive admin dashboard. I optimized performance (reducing page load times by 20%), integrated payment processors and SMS/external APIs, and strengthened delivery reliability with Docker-based environments and Azure DevOps CI/CD—backed by unit and integration testing practices.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Sterling Bank Plc

Sep 2022 - Present (3 years 9 months)

Designed and developed a robust online banking portal for account management, transaction history, and data/airtime transactions, integrating third-party APIs for bill payments. Built scalable, secure microservices with C#, ASP.NET Core, PostgreSQL/SQL using Entity Framework, and supported CI/CD and Agile delivery while applying Domain-Driven Design principles.

C#ASP.NET Core .NET PostgreSQL Entity Framework Microservices REST APIs Docker Azure DevOps CI CD

Software Engineer

ComplusTech Limited

Apr 2021 - Sep 2022 (1 year 5 months)

Developed the ChurchPlus multi-tenant church management application with an admin dashboard to streamline operations for church administrators. Optimized backend performance to reduce page load times by 20%, integrated payment processors and SMS notification APIs, and implemented Dockerized deployments with automated CI/CD and testing.

ASP.NET Core PostgreSQL Docker Azure DevOps REST APIs Unit Testing Integration Testing CI CD

Software Engineer

Renamarket

Feb 2019 - Feb 2021 (2 years)

Built ASP.NET Core web APIs to support customer onboarding, including mapping Local Government Areas (LGAs) to states for improved registration workflows. Integrated secure payment gateways (Paystack and Flutterwave), developed secure e-commerce sites with SOLID principles, and containerized applications with Docker while collaborating via Git and code reviews.