Software Developer/A&A Engineer, Senior
BAE Systems· enterprise· Defense & Space· Oct 23, 2026 · 5d ago
Herndon, Virginia
In office
Full-time
Senior
$133K–$226K
6+ years exp
Job description
Job Description BAE Systems, a top-ten prime contractor to the U.S. Department of Defense, enables the U.S. government to transform data into intelligence and provides engineering, integration and sustainment support for critical military platforms and systems. Intelligence & Security provides services and products to the Department of Defense, the government, federal law enforcement officials, and troops deployed around the world.
At BAE Systems, we promote a strong, collaborative culture and provide our employees with the tools, skills and training they need to succeed. We are all about trust, camaraderie and a shared ambition to lead the world in defense technologies and national security services. We offer flexible work environment to support the balance in your life and keep you performing at your best. Be a part of a company that is part of the community; driven to improve our future and protect our freedom.
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.
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.
Key Responsibilities:
• 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.
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Required Education, Experience, & Skills • 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.
Preferred Education, Experience, & Skills • 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.
Pay Information
Full-Time Salary Range: $132962 - $226035
Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.
Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.
About BAE Systems, Inc. BAE Systems, Inc. is a defense, aerospace, and security company headquartered in Falls Church, Virginia, with more than 40,000 employees worldwide. We serve, supply, and protect those who protect us. As one of the most geographically diverse international defense companies, we deliver a full range of products and services spanning air, land, maritime, space, and cyber, including advanced electronics, intelligence solutions, and dedicated customer support.
Our culture is performance-driven and values-led, built on curiosity, creativity, and collaboration. Purpose isn't a tagline here. It's what drives us. We're developing breakthrough technologies that defend national security and make a lasting impact on our communities and our planet. When you join BAE Systems, you're not just building a career. You're contributing to a mission that truly matters.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.
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Keywords to mirror
agilejavakotlinci/cdawsazurejiraai
- Platform
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- Effort
- medium
Benefits
Benefits detected in the listing.
Dental
Vision
401(K)
Paid Time Off