Top Senior Level C# Jobs in Washington DC,

As a Senior Back-End Developer, you will design, develop, and maintain robust back-end systems using C# and .NET frameworks. Responsibilities include coding, debugging, testing back-end APIs, collaborating with cross-functional teams, and implementing best practices for secure coding and compliance.

The Sr. Software Engineer will design, code, test, document, and validate high-performing software solutions. Responsibilities include writing complex code, application security remediation, performing tests, collaborating with business teams, and supporting custom or third-party solutions. This role requires strong problem-solving skills and adherence to development methodologies.

Lead voice and digital AI Self-Service solutions for large, multi-location contact centers. Design and implement AI self-service applications with Google CCAI. Serve as a project lead for Google Delivery practice. Integrate backend systems and perform testing.

The Systems Engineering Manager will lead a team focused on reliability, security, and performance of the NationBuilder platform, working collaboratively with engineering and operations. Responsibilities include developing technical vision, managing costs, ensuring compliance, and fostering professional growth within the team.

As a Senior Software Engineer in DevSecOps, you will enhance and operate the Plex platform, focusing on CI/CD improvements and integrating security tools. Collaborating closely with engineering teams, you will streamline software quality, stability, and performance while maintaining and securing cloud-based applications.

As a Senior Software Engineer at OpenSesame, you'll develop new features, enhance existing systems, and mentor fellow engineers. You'll work in a collaborative environment utilizing Extreme Programming practices, focusing on both front-end and back-end tasks while modernizing legacy systems.

The Senior Backend Engineer will enhance and maintain APIs using PHP and Java, design analytics systems, ensure code quality through testing, collaborate on system design, mentor other engineers, and debug production systems, all while contributing to architectural improvements and managing technical debt.