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 tests, review load testing results, and identify performance bottlenecks
- Troubleshoot defects and recommend system optimizations and enhancements
- Collaborate closely with stakeholders and a small development team, providing technical guidance and mentorship
Required Qualifications
Minimum of 5 years of experience as a software engineer in backend development
Strong experience building applications using .NET (C#)
Experience developing and maintaining GraphQL APIs
Experience with Postgres and/or MSSQL databases
Experience designing and maintaining data models and schemas
Experience serving as a senior or lead engineer on development projects
- Experience with Agile methodologies, Docker/containerization, and CI/CD pipelines
- Ability to work independently and collaboratively while mentoring junior developers
- Strong experience gathering requirements and working directly with stakeholders
Preferred Qualifications
Experience working with legislative systems or legislative data
Experience with Microsoft Azure
Familiarity with MEAN stack (MongoDB, Express, Angular, Node.js) and/or React.js
Location
Capitol Hill, Washington D.C.
Some work may be performed off-site with approval and at the discretion of the POC.
Top Skills
What We Do
The largest federal agencies, Fortune 1000 companies, and emerging tech startups trust Mobomo to build elegant solutions to solve their complex digital problems.
As a full-service DevOps agency Mobomo has helped revolutionize the digital federal and commercial landscape through our innovative designs of high performing websites and applications that are engineered to fit the unique needs of each of our customers. Through a collaborative, consultative process, we use cutting-edge DevOps techniques to deliver mobile, web, and cloud solutions that are integrated with our proven Agile software development methodology.
Our unique approach to conceiving, building, and delivering mission-critical products that people love to use. It’s fast, it’s focused, and most importantly, it’s effective.








