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111 entry level security engineer jobs at 34 companies in Ontario, CA

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Entry-Level Systems Engineer (Digital Comm & Networks Sys Engrg)
El Segundo, California, United States
$79k-$107k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
Bachelor’s degree in engineering or related field; knowledge of signal processing; ability to obtain U.S. security clearance.
Python, C++, Simulink, FPGA, ASIC, DSP
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Entry-Level Systems Engineer (Digital Comm & Networks Sys Engrg)
El Segundo, California, United States
$79k-$107k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
Bachelor's degree in engineering or related field; experience or coursework in signal processing; ability to obtain US Security Clearance (Secret) after start.
RF, Digital Signal Processing, Simulink, Python, C++, FPGA, ASIC
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1mo
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Security Engineer, Level 4
Los Angeles or Palo Alto or Bellevue or Santa Monica
$157k-$235k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
2+ YOE2+ years security-related experience post-Bachelor’s (or equivalent), strong security engineering background, proficiency with programming (Python/Go/Java), security tooling, AI tools, and excellent communication and analytical skills.
Python, Go, Java, SIEM, EDR, AI tools
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Security Engineer, Level 4
Los Angeles or Palo Alto or Bellevue or Santa Monica
$133k-$235k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Develops social media applications and augmented reality technology.
2+ YOEBachelor’s degree or equivalent, 2+ years security-related experience, expertise in infrastructure/application/cloud security domains, programming (Python/Go/Java), experience with vulnerability scanners, SIEM, EDR, and strong communication and problem-solving skills.
AI tools, vulnerability scanners, SIEM, EDR, cloud security frameworks, Python, Go, Java
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Security Engineer (Blue Team)
Hawthorne or Redmond
$130k-$180k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
2+ YOEBachelor's in a STEM field or 2+ years incident response/security operations/security engineering; experience with Python, Go, C++, or Rust; incident response, ETL, Kubernetes, and SIEM experience preferred.
Python, Go, C++, Rust, Kubernetes, ETL, SIEM, CSIRT, Windows, Linux, macOS
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3w
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Security Engineer
Kansas City or Atlanta or Clayton or New York or Los Angeles or Birmingham or Boston or Chattanooga or Charleston or Dallas or Denver or Edwardsville or Fort Lauderdale or Fort Worth or Houston or Jefferson City or Miami or Nashville or Park City or Philadelphia or Phoenix or Raleigh or Seattle or San Francisco or Salt Lake City or Wilmington or Washington
$120k-$150k/yr RemoteFull Time
Polsinelli
Polsinelli: Am Law 100 law firm providing comprehensive legal services.
2+ YOE2-4 years security engineering experience in on-premises environments, Bachelor's in CS/CE/IS or equivalent, experience with metrics/events/logging, detection engineering, scripting (Python, PowerShell), Microsoft Active Directory and Azure.
Splunk, Microsoft Active Directory, Azure, SIEM, Python, PowerShell, Microsoft Teams, Zoom, MITRE ATT&CK Framework, NIST Cyber Security Framework, CIS Controls
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2026 Entry Level Engineering Opportunities
Falls Church or Baltimore or Chandler or Huntsville or Virginia or Melbourne or Northridge or Ogden or Oklahoma City or Palmdale or Plymouth or Redondo Beach or Rocket Center or Rolling Meadows or Roy or San Diego
$70k-$95k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
Bachelors in engineering, computer science, or related STEM by June 2026; active U.S. government security clearance (Secret or higher); U.S. citizenship; strong engineering fundamentals, teamwork and communication; willing to relocate and start Jul–Dec 2026.
Microsoft Office
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2026 Entry Level Engineering Opportunities
Falls Church or Baltimore or Chandler or Huntsville or Virginia or Melbourne or Northridge or Ogden or Oklahoma City or Palmdale or Plymouth or Redondo Beach or Rocket Center or Rolling Meadows or Roy or San Diego or United States
$70k-$95k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
Bachelor's in engineering/CS/STEM by June 2026, active U.S. security clearance (Secret or higher), U.S. citizenship, strong teamwork and communication, willingness to relocate, available to start July–Dec 2026.
Microsoft Office
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Boeing Engineering Entry-level, Associate and Mid-level Positions
Seattle or Saint Charles or Huntsville or Portland or Tinker Air Force Base or Oklahoma City or Berkeley or Miami or Huntington Beach or Hazelwood or Germantown or El Segundo or Fort Walton Beach or China Lake or Tukwila or North Charleston or Kennedy Space Center or Heath or Houston or Fairfax or Colorado Springs or Seal Beach or Long Beach or Newburgh or Renton or Saint Louis or Auburn or Philadelphia or Everett or San Antonio or Kent or Mesa or New Orleans
$54k-$222k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, satellites, and defense systems.
Currently enrolled engineering/applied sciences student graduating before Sept 2027; strong academics, technical projects or internships; U.S. Person required; may require security clearance; employer will not sponsor visas.
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Security Engineer II, Detection and Response
San Francisco or Vancouver or Phoenix or Los Angeles or Seattle or Austin or Portland or California or United States or Canada
$123k-$165k/yr RemoteFull Time
Circle
CircleNYSE: CRCL: Digital currency issuer and blockchain financial infrastructure provider.
2+ YOE2+ years in detection/response or security engineering; experience with incident response, AWS + EKS, AI tooling, MacOS internals, and programming in Python or Golang; familiarity with Slack and GSuite; able to take on-call shifts.
Slack, Apple MacOS, GSuite, SIEM, Orchestration platforms, AWS, EKS, AI tooling, Python, Golang
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Security Software Engineer
Costa Mesa, California, United States
OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
0+ YOEPursuing or have completed a Bachelor's or Master's in CS/Engineering/Math/Physics; 0.25–2 years of technical experience; proficiency in Rust, C/C++, or Go; cybersecurity fundamentals; embedded systems knowledge; US person with clearance eligibility.
Rust, C, C++, Go, Embedded systems
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2w
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Aerospace Engineer (Direct Hire)
Los Angeles County or Vandenberg AFB or Washington or Cape Canaveral AFS or Patrick AFB or Houston or Wallops Island
$54k-$100k/yr OnsiteFull Time
Federal Aviation Administration
Federal Aviation Administration: Regulates civil aviation and manages national air traffic systems.
1+ YOEBachelor's degree in engineering (ABET-accredited) or equivalent, transcripts required; U.S. citizenship; specialized engineering experience for FV-H level; security clearance required.
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1w
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Composite Engineer
Adelanto, California, United States
$69k-$116k/yr OnsiteFull Time
General Atomics Aeronautical Systems
General Atomics Aeronautical Systems: Designs and manufactures unmanned aircraft and radar systems.
2+ YOEBachelor's in engineering or equivalent experience, 2+ years engineering experience, composite materials and fabrication experience, ability to obtain DOD security clearance, strong communication and documentation skills.
SAP, AMPS, NX, Microsoft Excel
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1w
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Systems Engineer
Adelanto, California, United States
$69k-$116k/yr OnsiteFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
2+ YOEBachelors in engineering or related field with 2+ years experience (or equivalent experience); knowledge of computing systems, OS, networking, virtualization; ability to obtain DoD security clearance.
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2w
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Thermal Engineer
El Segundo, California, United States
$75k-$125k/yr OnsiteFull Time
Space Kinetic
Space Kinetic: Developing propellant-free systems for deploying payloads in space.
1+ YOEBachelor's in aerospace/mechanical engineering,1–2 years related experience (advanced degrees valued),thermal design and test experience,ability to obtain government security clearance,US lawful status required.
ANSYS Thermal Desktop, Sinda/Fluint/RadCad, Siemens Space Systems Thermal, SolidWorks, CREO, AutoCAD, MATLAB, Python
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4w
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Senior GNC Engineer
Irvine, California, United States
$150k-$213k/yr HybridFull Time
Turion Space
Turion Space: Builds spacecraft for orbital debris removal and satellite servicing.
1+ YOEGraduate degree or BS in engineering with 1–4 years experience; proficiency in C++, Python, or MATLAB; technical competency in GNC, sensors, modeling & simulation; ability to obtain U.S. security clearance.
C++, Python, MATLAB
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2mo
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Software Engineer - Test
Los Angeles, California, United States
OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
2+ YOEB.S. in a technical field, 2+ years software engineering experience, 2+ years Python; experience with server infrastructure, CI/CD for HIL, Linux; strong documentation, automation, and security practices.
Python, Rust, Linux, CI/CD
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3w
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Propulsion Systems Engineer II
Long Beach, California, United States
$100k-$130k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
2+ YOEBachelor's in engineering,2+ years propulsion or high-performance systems experience,US citizenship,ability to obtain security clearance.
Amesim, EcosimPro, Simulink, Simscape, Jama, Python, NX, Teamcenter, Windchill, National Instruments
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Low Observables Engineer
Palmdale, California, United States
$77k-$135k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Bachelor's in engineering/physics or related, lab/hands-on build experience, US citizenship, government security clearance required, experience with EM/RCS/LO and programming useful.
Unix, C, C++, Java, Fortran, MATLAB, Python, CAD
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Radar Systems Engineer II
El Segundo, California, United States
$76k-$144k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
2+ YOEBachelor's in STEM and 2+ years systems engineering experience with radar algorithm design, requirements development, Matlab/Python/C++, DOORS, and ability to obtain U.S. security clearance.
DOORS, MATLAB, Python, C++
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