Full-time

Senior .NET Developer

Posted by Mobomo, LLC • DC, United States, United States

📍 DC, United States 🕒 February 24, 2026

About the Role

We are seeking a full-time, backend-focused Senior .NET Developer to support application modernization initiatives and ongoing maintenance of legacy systems. This role requires a hands-on engineer with strong experience in modern backend technologies, containerized environments, and CI/CD pipelines, as well as the ability to lead and mentor other developers.
Responsibilities

+ Participate in the analysis, design, and development of system modernization efforts

+ Support and enhance existing legacy applications

+ Lead and contribute to Agile development activities, including standups, user stories, backlog grooming, and task execution

+ Build, maintain, and enhance backend services using .NET (C#), GraphQL, and relational databases

+ Contribute to and support CI/CD pipeline development and deployment processes

+ Implement and maintain containerized solutions and troubleshoot deployment issues

+ Design and implement unit t...

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