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

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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
Help us #BeatIndeed & #BeatLinkedIn
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
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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
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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
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1mo
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Building Automation Systems (BAS) Facilities Engineer II
Tempe or Irvine or Santa Ana or Lafayette
$84k-$126k/yr HybridFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
2+ YOEBachelor's degree plus 2+ years operating and maintaining BAS/HVAC/electrical/plumbing systems (or advanced degree). Experience with BAS design, installation, commissioning, and mechanical systems; CMMS knowledge; travel up to 25%; Tridium/Niagara certification and Spanish language fluency are desirable.
Building Automation System (BAS), Tridium Niagara, Honeywell, Distech, CMMS, Modbus, BACnet, LonWorks
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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
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5d
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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
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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
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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
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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
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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)
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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
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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
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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
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3mo
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Staff Mission and Operations Modeling and Simulation Engineer
Poway or San Diego or California
$98k-$171k/yr HybridFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
6+ YOEBachelor's in engineering (or equivalent experience) with 6+ years experience (or 4+ with MS, 2+ with PhD). Proficiency with AFSIM, Python, MATLAB, SysML, and simulation tools; systems engineering and presentation skills; ability to obtain DoD security clearance.
AFSIM, STK, Simulink, Python, MATLAB, SysML, Cameo
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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
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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
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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
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4w
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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
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2w
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Stationary Engineer
Oceanside, California, United States
$32-$41/hr OnsiteFull Time
Sodexo
SodexoEuronext Paris: SW: Global provider of integrated food and facilities management services.
1+ YOE1+ years related experience, boiler operator's license required, ability to operate and maintain boilers, compressors, generators, refrigeration and other mechanical systems, team-oriented and safety-focused.
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1mo
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Engineer II - $500 Sign on Bonus
La Jolla, California, United States
$24/hr OnsiteFull Time
La Jolla Beach & Tennis Club
La Jolla Beach & Tennis Club: Operates a historic oceanfront resort and private social club.
Performs repairs and preventative maintenance on plumbing, electrical, HVAC, carpentry, and mechanical systems; reads blueprints; operates power tools; maintains life-safety systems and building fixtures.
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