Join Leidos as a Software Systems Engineer in Huntsville, AL

Leidos is seeking a talented Software Systems Engineer to join our multi-disciplinary team in Huntsville, AL, delivering innovative solutions for missile defense systems. As a leader in defense, space, cyber, and commercial fields, Leidos provides responsive, cost-effective engineering and IT solutions across the U.S.

Key Responsibilities

• Develop and maintain clear understanding of overall system interdependencies and interfaces.
• Derive software requirements and use cases with full traceability to system requirements.
• Drive definition of desired software functionality to meet System of System needs.
• Leverage Model-Based Systems Engineering (MBSE) methodologies for creating deliverables and ensuring traceability.
• Collaborate with multi-disciplinary teams and external stakeholders throughout the software lifecycle.
• Maintain SysML software models using Cameo Systems Modeler.

Basic Qualifications

• Bachelor’s degree in Systems Engineering, Software Engineering, Computer Science, Computer Engineering, or equivalent from ABET-accredited university (2-4 years relevant experience) or MS with <2 years.
• Demonstrated top-down systems engineering process knowledge for architecture and verification.
• Experience deriving software requirements/use cases, defining interfaces, and collaborating in Agile environments.
• Proficiency with tools like DOORS or Cameo Systems Modeler.
• US Citizenship with Final Secret Clearance or eligibility to obtain/maintain.

Preferred Qualifications

• MBSE experience, especially SysML in Cameo Systems Modeler.
• Knowledge of DoD acquisition processes.
• Full software lifecycle experience.
• Local to North Alabama or willing to relocate.

Why Leidos?

At Leidos, we outthink, outbuild, and outpace the status quo. We're recruiting disruptors who refuse to fail in high-stakes missions. Enjoy a pay range of $69,550 - $125,725, comprehensive benefits, and career growth in a dynamic environment. Original posting: November 25, 2025. Positions remain open at least 3 days.