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Northrop Grumman

Defense contractor for aerospace, space, cybersecurity

Principal / Senior Principal Systems Engineer

Full-TimeUpdated on 10/4/2026
$114k - $213.4k+ Overtime + Shift differential + Discretionary annual bonus
Senior, Expert
Bachelor's, Master's, PhD
Woodland Hills, Los Angeles, CA, USA
In PersonFull-time onsite work in Woodland Hills, California is required.
No H1B Sponsorship
US Citizenship Required

About the job

Requirements
  • A Bachelor of Science in a STEM discipline and 5 years of related systems engineering experience, a Master of Science in a STEM discipline and 3 years of related systems engineering experience, or a Ph.D. in a STEM discipline and 1 year of related systems engineering experience is required for the Principal Systems Engineer level.
  • A Bachelor of Science in a STEM discipline and 8 years of related systems engineering experience, a Master of Science in a STEM discipline and 6 years of related systems engineering experience, or a Ph.D. in a STEM discipline and 4 years of related systems engineering experience is required for the Senior Principal Systems Engineer level.
  • Demonstrated systems engineering experience, preferably in aerospace or defense.
  • Proficiency with systems engineering tools such as DOORS, CAMEO, MATLAB, or comparable software.
  • U.S. citizenship is required.
  • The ability to obtain and maintain a U.S. Government Secret clearance is required.
  • Availability to work onsite full-time in Woodland Hills, California is required.
Responsibilities
  • Own the post-CDR technical baseline, ensuring requirements, architectures, and interface control documents remain consistent, traceable, and properly controlled through qualification and production transition.
  • Refine and maintain the verification cross-reference matrix, mapping each requirement to specific test, analysis, inspection, or demonstration, including hardware-in-the-loop and software-in-the-loop coverage.
  • Lead integration and test planning and execution, developing test procedures, coordinating lab resources, and driving incremental hardware and software integration from components through system-level builds.
  • Execute formal verification campaigns, analyze test results, resolve discrepancies, and maintain verification status reporting to support requirement sell-off and customer acceptance.
  • Support system validation and operational suitability activities, including mission-scenario testing, host-platform integration, and evaluation in representative environments.
  • Partner with Operations and Manufacturing to enable production transition, contributing to design-for-manufacturing and design-for-assembly reviews, production test strategies, and as-built configuration tracking.
  • Drive ongoing configuration and change management, leading or participating in configuration control boards, assessing the technical impact of changes, and keeping DOORS traceability up to date.
  • Maintain and report on the risk and issues register for post-CDR phases, proposing mitigations and providing clear status to program leadership and customers.
  • Provide technical guidance and mentorship to junior engineers and actively participate in cross-functional teams to ensure alignment with program objectives and promote knowledge sharing across mechanical, electrical, and software disciplines.
  • Drive continuous improvement by identifying process inefficiencies, proposing updates to configuration-management practices, and contributing to lessons-learned documentation for future programs.
Desired Qualifications
  • A Master's degree or PhD in a STEM field or technical management.
  • A solid understanding of inertial navigation and related products.
  • Experience leading post-CDR phases and reviews such as Test Readiness Review, System Verification Review, Functional Configuration Audit, Physical Configuration Audit, and Production Readiness Review.
  • An active Department of Defense Secret clearance.

About the company

Northrop Grumman is a defense and space contractor that designs, builds, and integrates advanced military aircraft, spacecraft, and related technologies. Its products range from stealth aircraft and space telescopes to autonomous systems and cybersecurity solutions, delivered as end-to-end platforms across air, land, sea, and space. The company differentiates itself through its history of combining aerospace engineering with software and sensors, a scale-built by merging Northrop and Grumman and later adding defense and space acquisitions. Its goal is to secure national defense and enable scientific exploration by providing trusted, integrated systems at scale.

Company Size

10,001+

Company Stage

IPO

Headquarters

Falls Church, Virginia

Founded

1939

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Simplify's Take

What believers are saying

  • July 21, 2026 backlog hit $104.7 billion, with $20 billion net awards.
  • September 30, 2026 Army awarded $18.8 million for XRC ramjet propulsion development.
  • September 23, 2026 GHOST-R awards place Northrop on Space Force GEO reconnaissance prototypes.

What critics are saying

  • July 21, 2026 margins fell to 10.1%, pressured by Defense Systems and Space programs.
  • May 2026 Baltimore layoffs showed program volatility already hits Mission Systems headcount.
  • Sentinel restructuring and B-21 production ramp concentrate existential execution risk through 2030.

What makes Northrop Grumman unique

  • Northrop Grumman owns B-21, Sentinel, and CIRCM, spanning stealth, missiles, and survivability.
  • October 2026 FORTITUDE gallium nitride chips compress spectrum processing onto grain-of-rice hardware.
  • October 2026 Gilbert and Layton expansions deepen aerospace manufacturing around Arizona and Utah.

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Benefits

Health Insurance

Life Insurance

Disability Insurance

Paid Vacation

Paid Holidays

Relocation Assistance

Performance Bonus

Growth & Insights and Company News

Headcount

6 month growth

↓ -1%

1 year growth

↓ -1%

2 year growth

↓ -1%
Associated Press
Oct 8th, 2026
SRC develops Gryphon R1810 radar for Northrop Grumman's Raid Hunter drone defence system

SRC has developed its new Gryphon R1810 radar for Northrop Grumman's Raid Hunter air defence system, designed to protect military bases and critical infrastructure from aerial threats including drone swarms. The radar tracks incoming threats and intercepting munitions, supporting precision fire control throughout engagements. SRC scaled its existing Gryphon radar architecture to create the R1810, progressing from inception to functional prototype in six months. The system can detect Group 1 unmanned aircraft at up to 21.6 kilometres and Group 3 systems at 49.4 kilometres, significantly exceeding the capabilities of its R1540 predecessor. The R1810 uses the same core electronics as SRC's Gryphon R1540 but features eight subarrays per panel instead of four, providing greater detection range and accuracy.

SatNews
Oct 6th, 2026
Northrop Grumman selects ThinKom ThinAir SATCOM antennas for U.S. Navy E-130J Phoenix II TACAMO fleet.

Northrop Grumman selects ThinKom ThinAir SATCOM antennas for U.S. Navy E-130J Phoenix II TACAMO fleet. October 6, 2026 On October 6, 2026, satellite antenna manufacturer ThinKom Solutions, Inc. announced that Northrop Grumman has selected its ThinAir SATCOM antenna system to equip the U.S. Navy's E-130J Phoenix II aircraft. The airborne platform is under development to perform the military's Take Charge and Move Out (TACAMO) strategic communications mission, providing command-and-control connectivity during high-consequence operations. Technical specifications and platform architecture. ThinKom's ThinAir GT product line delivers multi-band Beyond-Line-of-Sight (BLOS) satellite communications for aircraft operating across diverse flight profiles. Utilizing ThinKom's Variable Inclination Continuous Transverse Stub (VICTS) phased-array architecture, the low-profile antenna system provides high-throughput connectivity compatible with both geostationary orbit (GSO) and non-geostationary orbit (NGSO) satellite constellations. The low-drag aerodynamic housing minimizes fuel and drag impact on airborne platforms while incorporating anti-jamming features and multi-orbit survivability capabilities engineered for executive transports, large cargo aircraft, and defense reconnaissance systems. Strategic role in TACAMO fleet modernization. The E-130J Phoenix II represents the U.S. Navy's next-generation TACAMO aircraft, replacing legacy operational platforms to maintain survivable communications between national decision-makers and nuclear deterrence forces. By integrating multi-orbit, multi-band satellite connectivity, the platform ensures continuous signal availability across contested electromagnetic environments. Executive perspective. "The TACAMO mission depends on communications systems that are resilient, available and ready in the most demanding operating environments," said Bill Milroy, Chief Technology Officer at ThinKom. "The selection of our ThinAir antenna reflects the growing importance of multi-orbit, high-throughput SATCOM capabilities for strategic airborne platforms, and we are proud to support Northrop Grumman and the U.S. Navy on this program."

Behind The Black
Oct 2nd, 2026
October 2, 2026 quick space links.

October 2, 2026 quick space links. Courtesy of BtB's stringer Jay plus the last from reader Gary. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below. * Space Force awards Northrop Grumman and True Anomaly separate contracts to develop high-orbit maneuverable inspector satellites True Anomaly will upgrade its Jackal spacecraft, already tested in orbit. Northrop will upgrade its MEV servicing satellite design, used to extend the life of several geosynchronous communication satellites. * SpaceX and Elon Musk have created 4,400 millionaires The tweet is in answer to a typically hateful leftist attack on evil billionaires On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman. The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner. The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible. "Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."-San Antonio Express-News

MarketScreener
Oct 2nd, 2026
Northrop Grumman corporation introduces FORTITUDE? Chip technology.

Northrop Grumman corporation introduces FORTITUDE? Chip technology. Published on 10/02/2026 at 11:35 am EDT S&P Capital IQ Northrop Grumman?s FORTITUDE? processed vast portions of the electromagnetic spectrum on a single, grain-of-rice?sized gallium nitride chip. The future-ready technology delivers three times more power and 20 times better signal quality, helping satellites, radar, GPS, electronic warfare and future 6G systems stay connected with clearer, more reliable performance. Previously known as the Super Lattice Castellated Field Effect Transistor, FORTITUDE? builds on the company?s focused research and development and substantial investment in microelectronics to replace dozens of components, cutting weight, and slashing power consumption while delivering greater value for the end system. Built in the U.S. for both commercial and defense markets, FORTITUDE? simplifies system architectures and opens new opportunities for faster, more dependable communications across next generation platforms. (C) S&P Capital IQ - 2026

Utah Business
Oct 2nd, 2026
Northrop Grumman continues in-space industry leadership with new facility opening in Arizona.

Northrop Grumman continues in-space industry leadership with new facility opening in Arizona. Company investment expands workforce capacity and further solidifies Gilbert as a critical hub for advanced space manufacturing and engineering. Northrop Grumman // Oct 1, 2026 GILBERT, Ariz. - Northrop Grumman (NYSE: NOC) is deepening its long-term commitment to Arizona's advanced manufacturing and space engineering expertise with the opening of the new A1 building on the company's Gilbert campus. Northrop Grumman senior leaders joined local, state, and federal elected officials, community partners, and employees to celebrate the opening of the new A1 building on the company's Gilbert, Arizona, campus. The 120,000-square-foot facility adds substantial office, classified, integration and test, and mission support space to advance critical space missions for national security, civil and commercial customers. Northrop Grumman is deepening its long-term commitment to Arizona and the greater Phoenix metro area as a key hub for advanced manufacturing and space engineering, creating high-skilled jobs, bolstering the regional industrial base and helping shape the future of the U.S. space economy.