About Careertakes

👉 Important disclosure: Careertakes is a third-party recruiting platform supporting this hiring process. If selected, you will be employed directly by our client, Aerospace & Defense.

Applicants for this role may also receive access to additional matched opportunities through the Careertakes platform.

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About the Role

Confidential Client is seeking a Software Engineer — Cybersecurity to join a systems and embedded-software team supporting next-generation defense programs in the St. Charles, MO (St. Louis area). This role focuses on designing, developing, and validating embedded and application-level software for mission-critical systems. Candidates must hold an active U.S. Secret security clearance and be eligible to obtain Top Secret and Special Program access.

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What You’ll Do

• Design, develop, test, and maintain embedded and application software through the full development lifecycle.
• Translate requirements and system-level needs into software designs and interfaces.
• Implement software components using C++, Python, and C# while targeting Linux-based environments.
• Integrate and validate software across unit, subsystem, and system-level testing.
• Collaborate with cross-functional teams (systems, hardware, test, and integration) to deliver robust solutions.
• Author and maintain software documentation, interface definitions, and test artifacts.
• Participate in peer code reviews and apply software engineering best practices (version control with Git, CI workflows).
• Work within domain-specific constraints for safety, reliability, and regulatory compliance in defense systems.

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Qualifications

Required

• Bachelor’s degree in Computer Science, Engineering, Data Science, or a related technical field.
• Active U.S. Secret security clearance with the ability to obtain Top Secret and Special Program access.
• 3+ years of relevant software engineering experience (level may vary between Associate to Senior based on specific opening).
• Hands-on experience with C++, Python, and/or C# for system or embedded development.
• Proficiency developing on Linux and using Git for version control.
• Familiarity with network architectures and TCP/UDP communication protocols.
• Experience with unit testing, integration testing, and software verification/validation.

Preferred

• Prior work on embedded systems or defense/aerospace programs.
• Strong software architecture and systems-thinking skills.
• Experience with secure coding practices and testing in safety- or security-critical domains.

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Benefits & Compensation

• Competitive base pay and incentive opportunities.
• Comprehensive health, dental, and vision insurance options.
• Retirement savings plans and employer contributions.
• Paid time off and paid holidays.
• Professional development and career growth opportunities.
• Relocation assistance available for eligible candidates. (Exact compensation details vary by role and will be provided by the hiring organization.)

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Location & Clearance

• Primary work location: St. Charles, MO (St. Louis area).
• Must possess an active U.S. Secret clearance and be able to obtain Top Secret and Special Program access as required by the program.

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Equal Opportunity & Hiring Transparency

Careertakes and our client are Equal Opportunity Employers committed to building a diverse and inclusive workforce. We prohibit discrimination or harassment of any kind. To support a fair and efficient hiring process, AI tools may be used to assist with application review or resume screening. These tools do not replace human decision-making. Final hiring decisions are made by people.

If you have questions about how your data is used, please contact us directly.