Eng Sr Prin II - SW

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Quick Summary

Requirements Summary

C#/.

Technical Tools

OtherEng

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.

BAE Systems is seeking a Software Developer Subject Matter Expert (SME) to design, develop, and sustain custom enterprise applications that enhance mission‑critical messaging operations across a large‑scale, secure environment. The selected candidate will lead the development of Enterprise Email and Mailbox tools, ensuring reliability, security, and compliance with customer policies and operational requirements.

This role requires deep technical expertise, strong problem‑solving skills, and the ability to translate complex workflow needs into scalable, maintainable software solutions that directly support national‑level missions.

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#LI-DDUNN

Bachelor’s degree in Computer Science, Software Engineering, or related technical field.
16+ years of experience in software development supporting enterprise environments.
Proficiency in one or more of the following: C#/.NET, Javascript, JQuery, HTML, and CSS
Experience with SQL and GIT
Demonstrated experience developing tools that interface with Microsoft Exchange, Sharepoint, or enterprise messaging systems.
Strong understanding of secure coding practices, API integration, and automation frameworks.
Ability to communicate complex technical concepts to both technical and non‑technical stakeholders.

Nice to Have

~1 min read

Experience in M-V-C Development methodology
Sharepoint familiarization
Exchange familiarization
Mail Recall

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.

What We Offer

~2 min read

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.

Intern Benefits: Temporary employees generally are not eligible for BAE Systems benefits, but can elect to participate in the 401(k) savings plan. Temporary employees working 20+ hours per week are eligible for medical benefits, the employee assistance program, and business travel accident insurance.

Please note: Some benefits may be different for union employees that are governed by a collective bargaining agreement (CBA) or for positions covered by a wage law called the McNamara-O’Hara Service Contract Act (SCA).