Northrop Grumman Space Systems, Multi-Domain Operations, and Missile Defense Integration Business Unit (BU) has an exciting career opportunity for a Modeling & Simulation Software Engineer – Level 3 or 4 to join our team of qualified, diverse individuals. This job is in Boulder, CO – Boulder is nestled in the foothills of the Rocky Mountains, and only 25 miles from downtown Denver. Due to the nature of our work, full-time in-person work is required.
Position Overview:
Welcome to the Advanced Programs Team! We are working on an autonomous distributed tracking system - Join our high performing software team and come make history with us!
As a Modeling & Simulation Software Engineer – Level 3 or 4 focused on modeling and simulation tasks. You will be responsible for the design, development, documentation, testing, deployment, and debugging of modeling and simulation applications. You may leverage the output of the model you created to run through the code and test the system. This includes researching, identifying, and implementing solutions to complex, multi-disciplinary software problems.
Seeking candidates who find satisfaction in working on challenging and diverse assignments in collaborative settings across all levels.
This requisition may be filled at a higher level based on the qualifications listed below.
This requisition may be filled at either a Principal Software Engineer – Level 3 or a Sr. Principal Software Engineer – Level 4.
Basic Qualifications:
- Principal Software Engineer – Level 3: Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 5 years of related experience, or a Master’s degree in a STEM discipline and 3 years of experience, or a PhD. and 1 year of experience.
- Sr. Principal Software Engineer – Level 4: Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 8 years of related experience, or a Master’s degree in a STEM discipline and 6 years of experience, or a PhD. and 4 year of experience.
- Complex Modeling & Simulation Experience (Prior Optical Signatures Code (OSC) and/or Digital Imaging and Remote Sensing Image Generation (DIRSIG) experience is ideal.)
- Modern C++ (v20 preferred)
- Ability and willingness to travel up to 10% to support business needs (only if needed)
- Applicants must have an active in-scope U.S. Government issued Secret security clearance at the time of application and is required to start; with the ability to obtain and maintain a Top Secret/SCI (TS/SCI) security clearance.
Preferred Qualifications:
- Python
- Linux
- Agile Development Exposure
Skills Required
- Bachelor's degree in a STEM discipline and 5 years related experience, or Master's +3 years, or PhD +1 year (Level 3)
- Bachelor's degree in a STEM discipline and 8 years related experience, or Master's +6 years, or PhD +4 years (Level 4)
- Modern C++ (C++20 preferred)
- Complex modeling and simulation experience
- Prior Optical Signatures Code (OSC) and/or DIRSIG experience
- Active in-scope U.S. Government Secret security clearance at time of application; ability to obtain and maintain Top Secret/SCI
- Ability and willingness to travel up to 10%
- Full-time in-person work in Boulder, CO
- Python
- Linux
- Agile development exposure
Northrop Grumman Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Northrop Grumman and has not been reviewed or approved by Northrop Grumman.
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Retirement Support — 401(k) matching is considered strong, with additional defined-benefit coverage for certain cohorts and options like catch-up contributions. Retirement programs are repeatedly highlighted as a core strength of the total rewards.
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Leave & Time Off Breadth — PTO, company-paid holidays, and compressed work schedules (such as 9/80) provide meaningful time away and flexibility. These scheduling options are cited as a major quality-of-life benefit across many locations.
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Parental & Family Support — Paid parental leave alongside caregiver leave, adoption assistance, and back-up care supports a range of family needs. These programs have been expanded recently, signaling continued investment in family support.
Northrop Grumman Insights
What We Do
We are a close-knit community of big thinkers collaborating to keep the world safe. Our passion, creativity and expertise bring next-level technology solutions to life in autonomous systems, cyber, C4ISR, strike, space, and logistics and modernization for our customers around the globe. On the Northrop Grumman team, you’ll join our pursuit of excellence immersed in a dynamic culture of innovation and respect. Your unique perspective will help achieve our shared vision for the future of global security. Every step of the way, you'll be supported by world-class training, employee resource groups and a comprehensive benefits package that enables greater health and happiness for you and your family. Worldwide and across disciplines, we’re challenging what’s possible for technology to protect people and places from undersea to outer space and into cyberspace. And we see the impact of our performance every day. We are Northrop Grumman, and we work on what matters—now, you too can make a difference. Explore opportunities in engineering, IT, manufacturing, business management, cybersecurity and more with us. Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer.







