Backend engineer building fintech/payments platform services in C#/.NET (ASP.NET Core): designing REST APIs, handling SQL databases, third-party API and webhook integrations, auth, and Docker-based production deployments. Hybrid in Lagos or remote within Nigeria, NGN 500,000/month.
Must Have ●3+ years of professional backend engineering experience. ●Strong C# and .NET / ASP. NET Core experience. ●Strong understanding of REST APIs. ●Strong SQL and relational database experience. ●Experience integrating third-party APIs. ●Experience working with webhooks. ●Strong understanding of authentication and authorization. ●Understanding of database transactions and concurrency. ●Experience building and maintaining production applications. ●Working knowledge of Docker. ●Comfortable deploying and troubleshooting backend applications in production. ●Experience with Git and collaborative development workflows. ●Strong debugging and problem-solving ability. ●Ability to work independently and take ownership.