Software Developer, Senior

Herndon, VAFull-time$133k–$226kPosted Aug 5, 2026

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 to design, develop, maintain, and support enterprise software applications in a Microsoft Windows environment.

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.

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Required Education, Experience, & Skills

6 or more years of professional software development experience.
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.
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 Intelligence & Security
BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it’s what we do at BAE Systems. Working here means using your passion and ingenuity where it counts – defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team—making a big impact on a global scale. At BAE Systems, you’ll find a rewarding career that truly makes a difference.

Intelligence & Security (I&S), based in McLean, Virginia, designs and delivers advanced defense, intelligence, and security solutions that support the important missions of our customers. Our pride and dedication shows in everything we do—from intelligence analysis, cyber operations and IT expertise to systems development, systems integration, and operations and maintenance services. Knowing that our work enables the U.S. military and government to recognize, manage and defeat threats inspires us to push ourselves and our technologies to new levels.

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.