.Net Core Developer - API Gateway Exp

Position: .Net Core Developer - API Gateway Exp

Location: Houston, TX – Hybrid Model

Long Term Contract

We are hiring an experienced .NET Core Developer with expertise in payment gateway and switch development. The role involves designing, developing, and optimizing high-performance payment processing systems with a focus on API-based integrations, and transaction processing for fintech platforms.

10 years of development experience in .NET Core / C# / ASP.NET Core with API Gateway must

Key Responsibilities:

• Develop and maintain payment gateway & switch applications using .NET Core / C#.
• Build and optimize high-performance APIs, microservices, and transaction routing engines.
• Work with BA, Product, and Ops teams to translate requirements into technical solutions.
• Debug, troubleshoot, and resolve transaction failures, settlement/reconciliation issues.
• Participate in SIT, UAT, and production support for payment projects.
• Contribute to code reviews, best practices, and process automation

Desired profile of the candidate:

• 10 years of development experience in .NET Core / C# / ASP.NET Core.
• Strong experience in payment systems, fintech, banking technology, or switch development.
• Hands-on expertise with transaction routing, host-to-host integrations.
• Proficiency in Web API, REST, microservices, SQL Server, Entity Framework, LINQ.
• Familiarity with cloud platforms (Azure / AWS) preferred.
• Knowledge of RBI/PCI-DSS standards, security & encryption in financial applications.
• Strong debugging, performance tuning, and problem-solving skills.