Software Systems Engineer

Description

Looking for an opportunity to make an impact?

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

Are you ready for your next career challenge?

Leidos Defense Systems Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world's toughest security challenges for customers with "can't fail" missions.

Leidos Land Systems has an exciting opportunity for a talented Software Systems Engineer to join a multi-disciplinary team within a matrixed organization to create unique solutions for complex problems, specifically regarding missile defense systems.

The Software Systems Engineer will support systems engineering needs throughout the software lifecycle of complex software systems. This includes deriving requirements, defining architecture and interfaces, driving software behaviors, and supporting verification and traceability of requirements. The selected candidate will develop and maintain a clear understanding of the overall software system functionality, interdependencies and interfaces. This includes communicating with a multi-disciplinary engineering team of both internal and external stakeholders. The selected candidate will also assist in maintaining the SysML software model in Cameo Systems Modeler.

Primary Responsibilities

Support verification and traceability of deliverables to software requirements

Assist in development of verification plans and process improvements

Develop and maintain a clear understanding of overall system interdependencies and interfaces

Derive software requirements with traceability to system requirements

Implement creative solutions to ensure program requirements are upheld

Basic Qualifications

Bachelor's degree in Systems Engineering, Software Engineering, Computer Science, Computer Engineering, or equivalent degree with 2+ years of experience or Master's degree.

Experience using requirement database tool(s) such as DOORS or Cameo Systems Modeler.

Demonstrated understanding of the top-down systems engineering process for architecture development and bottoms-up verification.

Experience in deriving requirements for complex systems.

Experience defining system interdependencies and interfaces.

Experience effectively collaborating and communicating within a multi-disciplinary team.

Experience working within an Agile environment (or equivalent).

Resident of the North Alabama area or willing to relocate to the Huntsville - North Alabama, AL area.

Must be a US Citizen and possess (and be able to maintain) a Final Secret Clearance or meet the eligibility to obtain (and maintain) a Secret Clearance.

Preferred Qualifications

Preferred candidates will also have experience and / or working knowledge with :

Model-Based Systems Engineering methodologies, particularly modeling in Cameo Systems Modeler (or equivalent) using SysML

DoD acquisition processes and methods

Software engineering throughout the software lifecycle

Object Management Group (OMG) Certified System Modeler Professional (OCSMP) certification

INCOSE Systems Engineering Professional (SEP) certification (ASEP or CSEP)

At Leidos, we don't want someone who "fits the mold"-we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, "what's next?" before the dust settles on "what's now."

If you're already scheming step 20 while everyone else is still debating step 2... good. You'll fit right in.

Original Posting : October 15, 2025

For U.S. Positions : While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range :

Pay Range $67,600.00 - $122,200.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.