Senior Full Stack Engineer

The Senior Full-Stack Developer builds and modernizes NASS mission applications using .NET Core, Blazor, and Azure PaaS services. This role develops secure, API-driven applications, supports legacy modernization efforts, and contributes reusable components to the Integrated Cloud Environment platform. *Key Responsibilities* * Develop modern applications using .NET Core, Blazor, Azure PaaS services, and other current technologies. * Design and implement applications using an API-driven architecture, with front-end, back-end, and integration layers communicating through secure, versioned RESTful APIs. * Implement responsive UI components aligned with NASS UI standards; build reusable components and templates to accelerate future development. * Ensure application components are WAF-compatible, secure by design, and compliant with FIPS and NIST standards. * Apply test-driven development (TDD) practices, including automated unit, integration, and contract tests for APIs. * Use GitHub for source control, branching, code reviews, and automated builds; deploy through CI/CD pipelines to Azure App Services and Azure Container Registry. * Reverse-engineer and refactor legacy Perl/PHP applications into modern, maintainable .NET Core and Blazor architectures while preserving mission-critical functionality. * Migrate legacy APIs to secure, scalable RESTful APIs aligned with Integrated Cloud Environment platform standards. * Support database modernization efforts by integrating application logic with modernized Azure SQL data models. * Produce technical documentation, including API specifications, architecture diagrams, and developer onboarding materials. * Support Integrated Cloud Environment platform enhancements and the onboarding of new NASS business applications. * Provide application support, including troubleshooting, blocker resolution, and performance issue remediation for mission-critical workloads. *Required Qualifications & Skills* * Proven full-stack development experience with .NET Core and Blazor. * Experience designing and consuming RESTful APIs in an API-first architecture. * Familiarity with Azure App Services, Azure Container Registry, and CI/CD pipelines using GitHub. * Experience with test-driven development (TDD) and automated testing practices. * Experience modernizing legacy applications (e.g., Perl, PHP) into current technology stacks preferred. * Working knowledge of FIPS/NIST security standards and secure, WAF-compatible application design. *Security & Eligibility Requirements* * Must comply with HSPD-12 and FIPS PUB 201 personal identity verification (PIV) requirements for federal contractor personnel. * Subject to a National Agency Check with Inquiries (NACI) or higher-level background investigation as designated for the position, and must be cleared prior to accessing sensitive NASS data. * Required to sign a NASS confidentiality certification / non-disclosure agreement prior to accessing NASS systems, databases, or data files. * Must complete annual USDA Information Security Awareness (ISA) and Rules of Behavior (ROB) training. * Must be a U.S. Citizen or Lawful Permanent Resident ("green card" holder). * Must obtain and display a government-issued identification badge while on USDA premises. Pay: $118,000.00 - $140,000.00 per year Work Location: In person