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Modeling & Simulation Performance Engineer - Level 3 or 4

Yesterday Huntsville, AL

RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: SecretTRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.Northrop Grumman Space Systems, Multi-Domain Operations, and Missile Defense Integration Business Unit (BU) has an exciting career opportunity for a Modeling and Simulation Engineer - Level 3 or 4 to join our team of qualified, diverse individuals. This position will be in Huntsville, AL.
Position Overview:
The selected Modeling and Simulation Engineer will support the Ground Weapons System (GWS) program as an individual contributor on the System Performance and Analysis - Test Exerciser team. This role is responsible for providing technical contributions and guidance to modeling and simulation products that directly support the design and development of the GWS capability on behalf of the Missile Defense Agency (MDA).
The selected candidate should thrive in a fast-paced work environment with high expectations, significantly diverse assignments, and collaborative/teams comprised of all experience levels.
Basic Qualifications:

Principal Modeling & Simulation Systems Engineer - Leve 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 and 3 years of related experience, or 1 year of experience with a PhD.

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Sr. Principal Modeling & Simulation Systems 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 and 6 years of related experience, or 4 years of experience with a PhD.
Proficiency in strongly typed languages such as C, C++, or JAVA
Experience or familiarity with other software languages such as ADA or Python'
Experience with the Atlassian tool suite and software version control tools such as Git and Bitbucket
Experience developing software using Object Oriented Design or SOLID principles
Experience debugging complex software systems
Familiarity with multithreaded or distributed systems
Familiarity with physics-based models as they relate to missile defense
Must be able to support an in-person / closed-area work environment
Applicants must have a current active in-scope US Government issued Secret security clearance at the time of application, which is required to start
Preferred Qualifications:

Experience developing software for iTEx
Experience working with OSF (Objective Simulation Framework) and GTISS (Ground Test Integrated System Simulation)
Experience optimizing runtime performance of algorithms or models and simulations (C++ is a bonus)
Experience with performance profiling of multithreaded or distributed systems under load
Experience working with the Boost thread library
* Strong understanding of data structures, concurrency, and scalable/efficient software design
Primary Level Salary Range: $108,800.00 - $163,200.00Secondary Level Salary Range: $135,800.00 - $203,600.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

Client-provided location(s): Huntsville, AL
Job ID: NorthropGrumman-R10230899
Employment Type: OTHER
Posted: 2026-04-28T21:06:23

Perks and Benefits

  • Health and Wellness

    • Health Insurance
    • Dental Insurance
    • Vision Insurance
    • Life Insurance
    • Short-Term Disability
    • Long-Term Disability
    • HSA
    • HSA With Employer Contribution
    • On-Site Gym
    • Pet Insurance
    • Mental Health Benefits
    • Virtual Fitness Classes
  • Parental Benefits

    • Birth Parent or Maternity Leave
    • Non-Birth Parent or Paternity Leave
    • Fertility Benefits
    • Adoption Assistance Program
    • Family Support Resources
    • Adoption Leave
  • Work Flexibility

    • Flexible Work Hours
    • Remote Work Opportunities
    • Hybrid Work Opportunities
    • Four-Day Work Week
  • Office Life and Perks

    • Commuter Benefits Program
    • Company Outings
    • On-Site Cafeteria
    • Holiday Events
  • Vacation and Time Off

    • Paid Vacation
    • Paid Holidays
    • Sabbatical
    • Leave of Absence
  • Financial and Retirement

    • 401(K)
    • 401(K) With Company Matching
    • Performance Bonus
    • Relocation Assistance
    • Financial Counseling
    • Profit Sharing
  • Professional Development

    • Tuition Reimbursement
    • Promote From Within
    • Mentor Program
    • Shadowing Opportunities
    • Access to Online Courses
    • Lunch and Learns
    • Internship Program
    • Leadership Training Program
    • Associate or Rotational Training Program
  • Diversity and Inclusion

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