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# Senior API Developer

- **Company:** MKS2 Technologies
- **Location:** Washington, DC, United States (Remote available)
- **Experience:** Expert
- **Salary:** $130,000.0 - $140,000.0
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Microsoft Azure, C Sharp (Programming Language), Systems Integration, Management of Software Versions, .NET Core, Asp.net Web Api, Api Management
- **Published:** July 26, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=fcb5a0dba6aa4620

## About the Role

Role Description: API developer for .NET APIs on an Azure integration platform that sits between CRM apps and back-end DBs with data exposed via APIs. APIs are written in .NET Framework currently, with future migration to .NET Core. Develop and test new and updated APIs on the integration platform. Collaborate with front-end consumers and back-end data providers to align on design and conduct testing. Troubleshoot and fix production defects found in APIs. This role requires skills, experience, and best practices in .NET (Core and Framework) development, testing, and technical design. Azure experience is a plus but is not required. Experience with AI tools to accelerate development and testing is a plus.

## Description

* Designing, developing, and implementing services using C# and ASP.NET Web API/.NET Framework, integrating with authentication providers (OAuth/JWT or other auth patterns), and external services
 * Deploying solutions through CI/CD pipelines
 * Packaging and deploying APIs to Azure environments, and publishing them through Azure API Management for routing, policy enforcement, rating, versioning and monitoring.
 * Conduct testing of .NET APIs on Azure
 * Leverage AI tools to accelerate development and testing
 * Collaborate with other technical teams to align on design and testing
 * Create and maintain detailed technical documentation
 * Troubleshoot and resolve production defects in APIs
 * Participate in Agile ceremonies
 * Report on progress and status of development

Mandatory skills:

 * API programming: Advanced

 * Microsoft .NET Framework: Advanced

 * Microsoft .NET Core: Advanced


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