Jobs / United States / Northrop Grumman Systems Corporation

Northrop Grumman Systems Corporation

Software Engineer - Level 3 or 4 (Mathematician)

United States-Colorado-Boulder Posted today $114,000

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Skills this job asks for

LinuxC++PythonStatisticsJavaScriptSQL

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Sponsorship verdict

Posting rules out sponsorship

The posting rules out sponsorship or requires citizenship or security clearance.

  • No government sponsor record hereThis employer posted directly and does not match a government sponsor register.
  • The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
  • No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area.
  • Security clearance mentionedFrom the posting’s own wording.
  • Confirmed live todayWhen a source last listed this job as open.
Details and sources
No salary bar for this route
H-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.

US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).

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Before you apply

Requirement gap

The posting mentions a security clearance — usually restricted to citizens of that country.

Sponsorship unknown

No register record and no sponsorship wording in the posting. Worth asking the employer before investing significant time.

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About the role

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: 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. The Northrop Grumman Space Systems, Multi-Domain Operations, and Missile Defense Integration Business Unit (BU), Advanced Programs group has an opening for a Software Engineer – Level 3 or 4 (mathematician/algorithms developer/software engineer) . We are working on an autonomous distributed tracking system - Join our high performing software team and come make history with us! The position is located on-site in Boulder, CO. Boulder is nestled in the foothills of the Rocky Mountains, and only 25 miles from downtown Denver. Join the Advanced Programs team as a Mathematician with Linux environment and C++ software development exposure. Essential Functions: • Performance analysis of tracking and state estimation algorithms • Tool and prototype development using modern C++ v20+ and Python  • Algorithm defect tracking and resolution • Analysis tool development (Python) • Technical documentation input as required • Input to customer-facing presentations This requisition may be filled at a higher grade based on 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 for a Software Engineer (Level 3 or 4): • 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 and 3 years of related experience, or 1 year of experience with a PhD. • 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 and 6 years of related experience, or 4 years of experience with a PhD. • An active in-scope U.S. Government DoD Secret security clearance is required to start; with the ability to obtain and maintain a Top Secret security clearance. Preferred Qualifications: • Linux Experience • Modern C++ Experience - Ability to write modern C++ code (templates, understanding move semantics, smart pointers, etc.) • Python Experience • Strong Math Background • Stochastic Processes • Linear Algebra • Probability • Statistical Principles & Analysis Experience • Hypothesis Testing • Probability Distributions • Conditional Probability • Multi-Variate Random Variables • Kalman Filters • Least Squares • Algorithm design and state estimation experience • Stereo vision systems experience • Infrared systems experience • Satellite systems experience • Data fusion experience • Distributed systems experience • Algorithm verification and validation experience • Plotly, javascript, and SQL experience #COSpace #SpaceSoftwareJobs #SPEnhancedERAP Primary Le

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