El Segundo, California, United States · On-site
$150k–$175k/yr
ABOUT NOOKS Nooks is pioneering Classified-Infrastructure-as-a-Service (CIaaS) — designing, building, and operating Sensitive Compartmented Information Facilities (SCIFs) and other secured, classified environments for th…
Skills: Industrial security, Physical security, SCIF operations, NISPOM, SCI
El Segundo, California, United States · On-site
$110k–$240k/yr
CHAOS Industries is redefining modern defense with omniscient systems purpose-built for today’s realities. Designed and built by top U.S. military veterans and Silicon Valley innovators, CHAOS Industries’ products are po…
Skills: Directional Communications Systems, RF Systems, Digital Signal Processing, Algorithm Development, Data Analysis
El Segundo, California, United States · On-site
$125k–$165k/yr
Overview Stellar Solutions, a nationally recognized “Great Place To Work”, has exciting opportunities providing Engineering solutions for innovative new-entrant space companies, as well as established space systems manuf…
Skills: Avionics hardware engineering, Systems engineering, ASIC integration, Receiver card integration, Requirements management
El Segundo, California, United States · On-site
$87k–$198k/yr
Strategic Deterrence Advisor The Opportunity: Space has evolved from a peaceful environment into a contested and congested domain. The U.S. Space Force is rapidly expanding to address global threats. Booz Allen enables m…
Skills: Program management, Nuclear command control and communications, National security, Space systems, Electromagnetic pulse technologies
El Segundo, California, United States · On-site
$101k–$186k/yr
Project Management Specialist - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on…
Skills: Project management, Earned Value Management, EVM, Program execution, Risk management
El Segundo, California, United States · On-site
$21/hr–$23/hr
Hourly Wage The hourly pay range for this position is $21.00 per hour - $23.00 per hour . Work Hours The work hours for this position are Weekends Only , 8:00 am - 4:30 pm . Key Purpose The Day Porter must have a keen ey…
Skills: Janitorial Services, Facility Maintenance, Customer Service, Equipment Inspection, Safety Compliance
El Segundo, California, United States · Hybrid
$94k–$176k/yr
RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities …
Skills: Project management, Supply chain management, Procurement, Subcontracts, Supplier management
El Segundo, California, United States · On-site
$107k–$193k/yr
Supply Reliability Engineer - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, A Boeing Company, delivers affordable, high-performance space systems for exacting customers. At Millenni…
Skills: Quality Engineering, Root Cause Analysis, AS9100, Process Auditing, Statistical Analysis
El Segundo, California, United States · On-site
$96k–$182k/yr
Date Posted: 2026-08-18 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Activ…
Skills: Linux systems administration, Cybersecurity compliance, Networking fundamentals, TCP/IP, DNS
Northrop Grumman Mission Systems, Inc.El Segundo, California, United States · On-site
$142k–$213k/yr
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: No CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportu…
Skills: Python, C++, Linux, CI/CD, Jenkins
El Segundo, California, United States · On-site
$117k–$227k/yr
The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
Skills: Space Domain Awareness, Mission Analysis, Modeling and Simulation, Python, MATLAB
El Segundo, California, United States · On-site
$110k–$138k/yr
CHAOS Industries is redefining modern defense with omniscient systems purpose-built for today’s realities. Designed and built by top U.S. military veterans and Silicon Valley innovators, CHAOS Industries’ products are po…
Skills: Mechanical engineering, CAD, SolidWorks, Prototyping, Structural analysis
El Segundo, California, United States · On-site
$110k–$138k/yr
CHAOS Industries is redefining modern defense with omniscient systems purpose-built for today’s realities. Designed and built by top U.S. military veterans and Silicon Valley innovators, CHAOS Industries’ products are po…
Skills: Mechanical engineering, CAD, SolidWorks, System integration, Prototyping
El Segundo, California, United States · On-site
$150k–$190k/yr
Blue Sky Innovators is seeking a Senior Financial Manager to join our team in El Segundo, CA! The Senior Financial Manager will be responsible for the following: Provide day-to-day on-site Financial Management support. P…
Skills: Financial Management, DoD Acquisitions, Budget Development, Forecasting, Financial Analysis
El Segundo, California, United States · On-site
SAIC has an opening for a Launch Cost Estimator Analyst who will utilize and enhance their skills in budget formulation and budget excursion cost estimating and analysis by supporting programs related to the development …
Skills: Cost Estimating, Budget Formulation, Financial Analysis, Parametric Cost Estimating, Life Cycle Cost Analysis
El Segundo, California, United States · On-site
$96k–$182k/yr
Date Posted: 2026-08-17 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Activ…
Skills: Earned Value Management, Financial variance analysis, Estimates at Completion, Financial forecasting, Microsoft Excel
El Segundo, California, United States · On-site
$114k–$213k/yr
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunit…
Skills: Aeronautical engineering, Air vehicle configuration, Siemens NX, CAD modeling, Parametric modeling
El Segundo, California, United States · On-site
Overview Allied Universal®, North America’s leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynamic, welcoming, and collaborative workplace…
Skills: Security operations, Patrol, Surveillance, Incident response, Access control
El Segundo, California, United States · On-site
$51k–$64k/yr
Title: Administrative Assistant Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national se…
Skills: Administrative support, Calendar management, Meeting facilitation, Microsoft Office Suite, Document creation
El Segundo, California, United States · On-site
$146k–$277k/yr
Date Posted: 2026-08-17 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The a…
Skills: RF design, Circuit card assembly design, GPS receiver development, RF testing, Troubleshooting
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The Security Manager will lead all site security operations, ensuring full compliance with NISPOM, SCI, and SAP regulations while managing the site security team. They will act as the primary liaison for government and industry partners and oversee the accreditation and maintenance of classified spaces.
Candidates must have at least 9 years of experience in industrial and physical security, specifically within cleared defense contracting or SCIF environments. A valid TS/SCI security clearance is required, along with prior experience serving as a Facility Security Officer.
Nooks is pioneering Classified-Infrastructure-as-a-Service (CIaaS) — designing, building, and operating Sensitive Compartmented Information Facilities (SCIFs) and other secured, classified environments for the defense and national security community. We work with the agencies, contractors, and mission-driven organizations that keep the nation safe, delivering the physical infrastructure that makes classified work possible. We’re growing fast, operating across multiple markets, and building a company that takes both the mission and the business seriously.
As Security Manager, you own security at your site – full stop. You’ll lead all security operations, oversee the site security team, and act as the primary liaison between Nooks and its government, defense, and industry partners. This is a senior role for someone with deep expertise in industrial and physical security, classified space accreditation and operations, and risk mitigation, and who thrives operating at the intersection of compliance, operations, and client relationships. You’ll be appointed as the site’s Facility Security Officer (FSO), functioning as the senior security representative at the site, directly reporting to the Senior Manager of Industrial Security.
At Nooks, we move fast. While you’ll have clear ownership over your core responsibilities, startup life means priorities can shift. We’re looking for a proactive problem-solver who is comfortable with ambiguity and ready to lean in wherever the team needs them most to drive us forward. You’re never satisfied with the status quo – you’re constantly looking for new ways, methods, and ideas to keep security operations moving at pace, remove friction for clients, and deliver the best security experience at the site.
After 12 months, your site has passed every annual or short-notice assessment with zero critical findings and your accreditation documentation is audit-ready at all times. Your site security team is stable, well-mentored, and operating with a clear chain of escalation, and at least one team member has grown into greater ownership under your management. Government, defense, and industry partners treat you as the trusted point of contact for escalated security matters, and Growth, Product, and Contracts regularly pull you into deals for technical credibility. Leadership relies on your risk assessments and strategic recommendations to shape decisions about the security program, not just to react to problems after they surface.
You report to the Senior Manager of Industrial Security and are expected to drive decisions on site-level security posture, not simply execute on direction from others. You’ll work closely and regularly with IT & Cyber, Product, Ops, and Growth, and you’ll serve as the senior security point of contact for Nooks clients, industry partners, and U.S. Government entities. Internally, you’re expected to mentor and develop your site security team directly; externally, you’re expected to represent Nooks with the credibility of someone who owns the accreditation and compliance posture of the site.
Candidates must be authorized to work in the United States. In-scope TS/SCI security clearance eligibility is required. All candidates must be eligible for and committed to maintaining a U.S. government security clearance as a condition of employment.
Salary Range for all departments
Classified-Infrastructure-as-a-Service
Nooks is tackling the challenging necessity of Classified-Infrastructure-as-a-Service (CIaaS) for both industry and government customers to accelerate collaboration, technology adoption and engagement between industry and government to win the Great Power competition. Nooks will lower the barrier-of-entry/scale to qualified companies to engage in classified environments to rapidly bring innovative solutions to reality and revolutionize the landscape of classified operations. We strive to build a culture of "People First, Service Always." We are a Veteran Owned Small Business, and we believe that service to country can continue even after leaving the military/government. We want each of our employees to grow, learn, and achieve more than they ever thought possible in a culture that embraces diverse backgrounds and perspectives. Come join our team!
Based on 730 listings with disclosed salaries, most security & safety jobs in El Segundo, CA pay between $92k–$225k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 806 open security & safety positions in El Segundo, CA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Boeing, The Aerospace Corporation, RTX, CHAOS Industries, KBR, Inc., among others. Browse the listings above to see every active employer.
Yes — 80 of the 806 open security & safety positions offer remote or hybrid work (8 remote, 72 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
