Senior Application Engineer

Job description

GCyber, LLC is seeking a Senior Application Engineer to support a high visibility customer in Washington, DC. You will join a multidisciplinary team responsible for developing, maintaining, and operating enterprise applications primarily on the .NET platform across both classified and unclassified networks. As the Senior Application Engineer, you will: - Design, develop, test, and deploy web applications using C#, ASP .NET, Angular, JavaScript, HTML/CSS, and MS SQL Server - Support CI/CD pipeline development and migration to modern DevSecOps tooling. - Write and maintain automated tests (unit, regression, UAT) to ensure code quality and release confidence - Produce clear documentation: source code, system architecture, end-user guides, and test plans - Track work using Agile Kanban methodology via Jira; write and refine user stories with clear acceptance criteria - Support application migrations including .NET Framework to .NET Core and VM-based hosting to containers - Collaborate with government and contractor team members on development, troubleshooting, and operational support - Respond to production incidents and contribute to after-action reporting and root cause analysis - En...