58 operating systems engineer jobs at 31 companies in Menifee, CA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
2mo
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Operating Engineer
Brea, California, United States
$55k-$57k/yr OnsiteFull Time
JLL
JLLNYSE: JLL: Global commercial real estate and investment management services.
4+ YOEHigh school diploma; 4+ years in electrician/HVAC or emergency backup systems; skilled with tools; OSHA knowledge; able to lift 60 lbs.
Electrical tools, HVAC equipment, Pumps, Motors, Conduit, Wiring
1mo
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Power Systems Engineer
Irvine, California, United States
$65k-$108k/yr HybridFull Time
ETAP
ETAP: Electrical power system modeling and analysis software solutions.
1.5+ YOE1.5+ years in electric utility transmission/distribution design or operations; power system analysis software experience; GIS/CAD familiarity; programming/AI for automation; strong written/spoken communication; US work authorization; BS in Electrical Engineering; PE license in CA preferred.
Revit, AutoCAD, ETAP, SKM, EMTP-RV, PSCAD, CYME, PSLF, GIS, MEP, CAD
3w
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Consulting Systems Engineer (Los Angeles, CA) - Operational Technology (OT) Modernization
Los Angeles or Orange County
$150k-$200k/yr OnsiteFull Time
World Wide Technology
World Wide Technology: Global technology solutions provider and systems integrator.
5+ YOE5+ years pre-sales/solutions engineering experience in utility OT; strong familiarity with SCADA, EMS/ADMS/OMS/AMI, industrial protocols and OT cybersecurity; SOW/BOM/POC development; bachelor’s degree or equivalent.
SCADA, OSIsoft, AVEVA, EMS, DMS, ADMS, OMS, AMI, GIS, pLTE, IP/MPLS, IEC 61850, DNP3, Modbus, IEC 60870-5-101/104, ICCP (TASE.2), OSIsoft PI System, AVEVA Data Hub, Nokia, Cisco, Itron, Landis+Gyr, GE Vernova
2d
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Cloud Systems Engineer III
Santa Ana, California, United States
$123k-$135k/yr HybridFull Time
Orange County's Credit Union
Orange County's Credit Union: Member-owned financial institution providing banking and lending services.
2+ YOEExperience administering Windows and Linux servers, Microsoft Intune, plus 2+ years operating cloud infrastructure (AWS/Azure). Strong IaC, scripting, security, and troubleshooting skills required.
Microsoft Windows Server, Active Directory, Microsoft Intune, Azure Active Directory (Entra ID), AWS, Azure, Terraform, Bicep, ARM, CloudFormation, Ansible, Kubernetes, AKS, EKS, Python, PowerShell, Bash, Git, ExpressRoute, Direct Connect
2mo
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Senior Network Engineer, Factory Systems and Operational Technology
Costa Mesa, California, United States
$150k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
5+ YOE5-7 years OT/enterprise network engineering; field installations; ISA-95 and Purdue; Cisco/Arista/Palo Alto; Modbus/TCP, PROFINET; travel; TS clearance.
Cisco, Arista, Palo Alto, Panorama, NGFW, Modbus/TCP, PROFINET, EVPN VXLAN, AWS, Azure, GCP, OCI, Python, Nornir, Jinja, Ansible, Terraform
13h
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Spacecraft Operations Engineer - Temporary
Carlsbad or San Jose or San Francisco or New York City
$181k-$285k/yr HybridContract
Viasat
ViasatNASDAQ: VSAT: Provider of global satellite-based connectivity and secure communication solutions.
10+ YOEBachelor’s/Master’s in engineering or equivalent, US citizenship, 10+ years satellite mission operations/I&T/systems engineering experience, practical knowledge of EPS/ADCS/Thermal/Comm, HIL/SIL familiarity, strong leadership and communication.
Hardware-in-the-Loop (HIL), Software-in-the-Loop (SIL), MATLAB, Git
6d
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Sr. BESS Operations Engineer
Teaneck or San Francisco or Irvine
OnsiteFull Time
Qcells
Qcells: Provider of solar modules, energy storage, and EPC services.
5+ YOEBachelor's or Master's in engineering,5+ years BESS/renewable/grid operations experience,knowledge of power systems,industrial protocols,Linux/SSH,Ansible,ability to apply LLMs/ML for automation and monitoring.
Modbus, CANbus, DNP3, TCP/IP, Linux, SSH, Ansible, Python, SCADA, Confluence, LLMs
1mo
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Mechanical Design Engineer III
Escondido, California, United States
$84k-$154k/yr OnsiteFull Time
Nikkiso
NikkisoTokyo Stock Exchange: 6376: Designs and manufactures precision fluid control and industrial equipment.
2+ YOEBachelor's degree in Mechanical Engineering with 2 years experience or Master's in Mechanical Engineering; cryogenic/high-pressure system experience; read/develop P&ID; familiarity with P&IDs; pump selection/operations; safety/risk assessment; CAD tools; travel up to 25%.
AutoCAD, Inventor, SolidWorks
3w
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Quality Engineer (Ontario, CA, US, 91761)
Ontario, California, United States
$80k-$85k/yr OnsiteFull Time
Datwyler
DatwylerSIX Swiss Exchange: DAE: Manufacturer of system-critical elastomer components for diverse industries.
2+ YOE2 years quality/engineering/operations experience, college degree in engineering/statistics/mathematics/business, knowledge of quality system management, strong MS Office skills, excellent communication; must be U.S. person (ITAR).
Microsoft Windows, Microsoft Office, PPAP, ISO, AS, RC/CA
3mo
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Industrial Engineer (9440)
Newport Beach, California, United States
$80k-$138k/yr OnsiteFull Time
Tower Semiconductor
Tower SemiconductorNASDAQ: TSEM: Global manufacturer of specialty analog integrated circuits.
2+ YOEB.S in Industrial Engineering, Systems Engineering, or Computer Science; 2-3 years in semiconductor manufacturing; Master's preferred; experience in manufacturing and operations management; strong statistics, data analysis, and problem solving; knowledge of manufacturing science, scheduling/dispatching, TOC, Lean, inventory and capacity planning; e...
PROMIS, APF, RTD
3w
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Tactical Fires Network Systems Analyst
Camp Pendleton, California, United States
$62k-$141k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
Experience integrating Marine Corps fires and networks (AFATDS, JADOCS, JFN, MSS); Marine Corps operations experience; capability analysis, requirements definition, system test/integration, and technical documentation; TS/SCI clearance; HS diploma or GED; ability to travel up to 25%.
AFATDS, JADOCS, JFN, Maven Smart Systems (MSS)
2mo
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Sr. Test Engineer (Gasification R&D)
San Bernardino, California, United States
$150k-$175k/yr OnsiteFull Time
Arbor Energy
Arbor Energy: Building advanced power systems for clean, carbon-negative electricity.
5+ YOEFive+ years of hands-on test-engineering with high-pressure/high-temperature systems; design, build, and operate test stands; strong instrumentation and data acquisition.
Python, MATLAB, PLC, Sensors, Data Acquisition
1mo
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Senior Mission Operations Engineer
Irvine, California, United States
$130k-$190k/yr OnsiteFull Time
Turion Space
Turion Space: Builds spacecraft for orbital debris removal and satellite servicing.
3+ YOE3+ years in mission or spacecraft operations; deep knowledge of operations concepts, procedures, and ground systems; strong cross‑disciplinary communication; ability to obtain TS/SCI; scripting experience (Python, MATLAB) preferred.
Python, MATLAB
1mo
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Senior Field Operations Engineer - ISR
Irvine, California, United States
$125k-$150k/yr OnsiteFull Time
DZYNE Technologies
DZYNE Technologies: Developer and manufacturer of autonomous airborne defense systems.
5+ YOE5+ years in systems engineering/test/documentation with electrical/avionics/RF background, strong technical writing and data management skills, bachelor's in a technical field or equivalent experience, US work authorization, onsite in Irvine, CA, occasional lifting to 25 lbs.
Microsoft Excel, SQL, Python, BI platforms, FRACAS, AS9100, MIL-STD
1w
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GTM Engineer – HubSpot & Sales Enablement
Irvine, California, United States
HybridFull Time
Xe
XeNASDAQ: EEFT: Provides international money transfers and online currency exchange services.
Deep, hands-on HubSpot Sales Hub expertise; experience building GTM/revenue operations systems; strong commercial intuition and sales motion knowledge; ability to translate strategy into execution and dashboards.
HubSpot Sales Hub
1mo
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Integration Capacity Analysis (ICA), Engineer 3 (Pomona, CA, US, 91768)
Pomona or California
HybridFull Time
Edison International
Edison InternationalNYSE: EIX: Generating and distributing electricity to customers in Southern California.
5+ YOEBachelor's degree in engineering or related field, 5+ years engineering experience in operations/production/construction/maintenance, valid Class C driver license, ability to pass background/PRA for NERC/CIP roles; preferred experience with power systems, power flow modeling, Python, SQL, Snowflake, ML, and data visualization.
Python, SQL, Snowflake
1w
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Director, Technical Lead Forward Deployed Engineer
Santa Clara or Irvine
OnsiteFull Time
KPMG
KPMG: Global professional services network providing audit, tax, and advisory.
10+ YOE5+ Mgmt10+ years shipping production secure software systems with ML/AI and cloud experience; bachelor’s in science/engineering; 5+ years hands-on leadership; portfolio/GitHub; strong communication and problem-solving; travel may be required.
Claude Code, Lovable, Cursor, Azure, GCP, AWS, GitHub
1w
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Facility Engineer
Brea, California, United States
OnsiteFull Time
Life Time
Life TimeNYSE: LTH: Operates premium athletic country clubs and lifestyle resorts.
3+ YOEExperience with HVAC, plumbing, electrical, boilers, and pool systems; ability to lift 20+ lbs; technical/trade certification; 3+ years facilities experience; required certifications include boiler operator/stationary engineer, EPA CFC, and pool operator credentials.
CMMS
2w
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Forward Deployed Engineer
Monterey Park or Orange County or Las Vegas
$100k-$130k/yr HybridFull Time
Astrana Health
Astrana HealthNASDAQ: ASTH: Operates technology-powered platforms to coordinate and deliver medical care.
1+ YOEBuild and deploy production AI systems, work with clinical/claims/operational data, collaborate with clinical and operations teams; 1+ years software/ML/engineering experience; preferred technical degrees.
LLMs, RAG, agents
1mo
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Backend Engineer, Flag Delivery
Oakland or San Francisco or New York City or Boston or Seattle or Irvine or Los Angeles or Monterey or Santa Barbara or Santa Rosa or Austin or Portland or Philadelphia or Chicago or United States
$146k-$235k/yr OnsiteFull Time
LaunchDarkly
LaunchDarkly: Provides a feature management platform for software development teams.
5+ YOE5+ years backend engineering experience building/operating production distributed systems; strong programming in Go/Java/Rust; production debugging, observability, on-call experience; clear AI usage in engineering work.
Go, Java, Rust