> Markdown version of [/jobs/ext/4609193-software-developer-a-a-engineer](https://www.wearedevelopers.com/jobs/ext/4609193-software-developer-a-a-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Developer/A&A Engineer - **Company:** B CORE LLC - **Location:** Herndon, VA, United States - **Experience:** Expert - **Salary:** $145,000 - $170,000 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), .NET Framework, Agile Methodology, Artificial Intelligence, Amazon Web Services, Application Integration Architecture, Software Applications, Confluence, JIRA, Microsoft Azure, C Sharp (Programming Language), C++ (Programming Language), Code Review, Data Structures, Relational Databases, Software Debugging, Software Design Patterns, Github, Internet Information Services (IIS), Object-Oriented Software Development, Windows PowerShell, Software Engineering, Software Vulnerability Management, Web Applications, Web Services, Scripting, Enterprise Software Applications, Kotlin, Deployment Automation, Windows Services, Software Version Control, Legacy Systems, Jenkins, Web Api, Programming Languages - **Published:** November 6, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9296226/software-developeraa-engineer ## About the Role The team primarily develops in C# and .NET. Candidates with strong experience in Java or another object-oriented programming language are encouraged to apply. The successful candidate should be able to become productive in C# within the first several months., * Minimum 6+ years of professional software development experience, with at least 2 years focused on security engineering and A&A processes. * Bachelor's degree in a related technical field or equivalent professional experience. * Strong proficiency in an object-oriented programming language such as C#, Java, Kotlin, or C++. * Strong understanding of object-oriented design, data structures, algorithms, and common software design patterns. * Experience developing and supporting business or enterprise applications. * Experience with source control, code reviews, testing, debugging, and the Software Development Lifecycle * Experience working with relational databases, web services, or application integrations. * Ability to learn new programming languages, frameworks, and systems. * Knowledge of A&A processes, including identifying and addressing security incidents and compliance issues. * Strong problem-solving and communication skills. Desired Qualifications: * Experience with C# and .NET. * Experience with PowerShell or another scripting language. * Experience developing web APIs, Windows services, desktop applications, or web applications. * Experience with Microsoft Windows and IIS environments. * Experience with Jenkins CI/CD pipelines and automated deployments. * Experience working with AWS and Azure * Experience using GitHub, Jira, Jenkins, and Confluence * Familiarity with secure software development practices. * Familiarity with Agile development methods. * Familiarity with AI-assisted development tools and AI-enabled application capabilities, including the secure use and validation of generated code and content. ## Description Do you want to join a team that is building tailored technical solutions to modernize our government's mission and our client's business? Do you have a desire to change how people work? Are you interested in helping to protect our nation's cyber interests? Join our growing team supporting customer missions as a Software Developer / A&A Engineer in Herndon, Virginia., We are seeking a Senior Software Developer with expertise in secure software engineering and Assessment and Authorization (A&A) processes. The candidate will develop secure applications, conduct security assessments, and support A&A efforts in an Agile environment, collaborating with cross-functional teams to safeguard customer assets., * Design, develop, test, deploy, and maintain enterprise applications and services. * Develop readable, maintainable, and secure software. * Troubleshoot application defects and production issues. * Review code and contribute to technical design decisions. * Work with customers and team members to clarify requirements. * Maintain technical documentation. * Participate in planning, code reviews, testing, and software releases. * Support and improve existing applications, including legacy systems. * Complete security-relevant A&A tasks, such as risk assessments, vulnerability management, security control testing, and preparing authorization packages.