Northrop Grumman Azusa: The Missile Warning Sensor Facility with 60 Years of OPIR Heritage
Northrop Grumman Azusa: the missile warning sensor facility with 60 years of OPIR heritage
Northrop Grumman's Azusa, California facility is one of the most specialized sites in the US defense industrial base — a facility dedicated to electro-optical and infrared (EO/IR) sensor systems for missile warning satellites. The site currently has no open job listings on our platform, but its role in the $4.2 billion Next Generation OPIR Polar (NGP) program makes it a facility worth understanding if you're tracking Northrop Grumman's space sensor work.
What happens in Azusa
The Azusa site is Northrop Grumman's center of excellence for space-based infrared sensors — the instruments that detect missile launches from orbit by sensing their heat signatures. This is some of the most sensitive work in the US space defense portfolio.
Current flagship: Next Generation OPIR Polar (NGP) — The US Space Force awarded Northrop Grumman a cumulative $4.2 billion contract to build two missile-warning satellites for highly elliptical orbits (HEO). These satellites will detect and track ballistic missiles and hypersonic weapons with cyber-hardened communications. Northrop Grumman and Ball Aerospace develop the IR sensor payloads at Azusa, where the hardware is integrated with mission-processing electronics and flight software.
Heritage: SBIRS and DSP — Azusa's EO/IR work traces back through the Space-Based Infrared System (SBIRS) — the current US missile warning constellation — and its predecessor, the Defense Support Program (DSP), which detected missile launches from geostationary orbit for over 40 years. The site supplied the focal plane assembly, optical telescope assembly, and thermal control subsystems for SBIRS. That lineage of infrared detector expertise has been continuous at this facility for over six decades.
Facility history
The Azusa site has an unusual industrial heritage:
WWII origins — Built as an Aerojet rocket plant for solid rocket motor production. Aerojet manufactured propulsion for NASA missions and ICBMs at this facility.
Pivot to optics — When rocket production shifted to Aerojet's Rancho Cordova site, the Azusa facility transitioned to R&D, optics, and infrared detector technology for satellite programs.
TRW absorption — When Northrop Grumman acquired TRW in 2002, it inherited TRW's Defense Support Program sensor heritage. This work was consolidated into the Azusa facility, creating a single center of excellence for OPIR sensors.
The result is a facility that has been building some form of space sensing technology for over 60 years — one of the longest continuously operating space hardware sites in the country.
Azusa is a small, specialized facility focused on a single classified program (NGP). Hiring for this type of work happens in waves — during sensor development and integration phases, the site ramps up; between program milestones, it stabilizes. The absence of current listings doesn't mean the site isn't active — it means the current program phase isn't in a hiring surge. When NGP integration and testing ramp up, expect EO/IR engineer, systems integration, and test engineer positions to appear.
What roles exist at Azusa (when hiring)
Based on historical hiring patterns and the NGP program scope:
| Role | Focus | Typical Level |
|---|---|---|
| EO/IR Sensor Engineer | Infrared detector design, focal plane assembly | Staff/Senior |
| Optical Systems Engineer | Telescope assembly, optical alignment | Staff/Senior |
| Systems Integration Engineer | Sensor-to-spacecraft integration, testing | Mid/Senior |
| Thermal Engineer | Cryogenic cooling, sensor thermal control | Mid/Senior |
| Software Engineer | Mission processing, flight software | Mid/Senior |
| Security/ITAR Specialist | Classified program compliance | Various |
All roles at Azusa require US citizenship, and most require Secret or Top Secret clearances due to the classified nature of the missile warning mission. Salary ranges follow Northrop Grumman's standard California pay structure, with staff-level engineers earning $148K-$222K and senior staff reaching $193K-$289K.
Azusa in the NG California ecosystem
Azusa sits in the San Gabriel Valley, about 25 miles northeast of downtown LA. It's part of Northrop Grumman's broader Southern California presence:
| Site | Distance from Azusa | Focus |
|---|---|---|
| Azusa | — | EO/IR sensors, missile warning |
| El Segundo | 35 miles | Space Systems HQ, national security satellites |
| Redondo Beach | 40 miles | Space Park, satellite manufacturing |
| San Diego (Rancho Bernardo) | 120 miles | Unmanned systems, Global Hawk |
For engineers interested in space-based sensing, Azusa is the most specialized option. For broader space systems work, El Segundo and Redondo Beach offer more variety and higher hiring volume.
Browse all Northrop Grumman positions on Zero G Talent. For other NG locations, see Northrop Grumman El Segundo, Northrop Grumman San Diego, or Northrop Grumman Arizona. For NG salary data, see our Northrop Grumman salary breakdown.
