PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
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
1mo
Save
Mark Applied
Hide
Operating Engineer
Los Angeles, California, United States
$47-$55/hr OnsiteFull Time
5+ YOE5+ years in operating mechanical, electrical, and plumbing systems; HS diploma or GED; trade licenses; driver license; experience in commercial properties; knowledge of energy management systems.
Outlook, Excel, Word, Energy management systems, HVAC, Boilers, Pumps, Refrigeration
1w
Save
Mark Applied
Hide
Operating Engineer-Plant
Los Angeles, California, United States
$40-$47/hr OnsiteFull Time
3+ YOE3+ years plant operations and maintenance experience; associate degree in engineering/technical discipline; steam engineer license or 500 HP license, universal chlorofluorocarbons certificate, valid driver's license; ability to operate and maintain boilers, HVAC, plumbing, electrical and automation systems.
2mo
Save
Mark Applied
Hide
Operating Engineer
Brea, California, United States
$55k-$57k/yr OnsiteFull Time
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
3w
Save
Mark Applied
Hide
Systems Engineer (Esports)
Los Angeles, California, United States
$149k-$208k/yr OnsiteFull Time
5+ YOE5+ years in systems/support/infrastructure engineering; experience with Ansible, Terraform, Jenkins, virtualization, containerization, imaging/deployment tools, Linux/Windows, scripting, Git, and cloud platforms; able to reduce operational toil and support global events.
Ansible, Terraform, Jenkins, VMware, Hyper-V, Proxmox, AHV, Docker, FOG, SCCM, Autopilot, Linux, Windows, PowerShell, Bash, Git, AWS, Azure
6d
Save
Mark Applied
Hide
Sr. Systems Engineer
Los Angeles, California, United States
$88k-$131k/yr HybridFull Time
5+ YOE5+ years systems engineering experience; expertise with Kubernetes, Linux, cloud operations (Azure preferred); automation with Git Ops, Ansible, Terraform, Claude AI; monitoring with Datadog/Prometheus; scripting in Python/Bash/PowerShell; security/compliance (PCI DSS, SOC 2); on-call participation.
Kubernetes, Linux, Azure, Git Ops, Ansible, Terraform, Claude AI, Datadog, Prometheus, Python, Bash, PowerShell
1mo
Save
Mark Applied
Hide
Power Systems Engineer
Irvine, California, United States
$65k-$108k/yr HybridFull Time
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
3mo
Save
Mark Applied
Hide
Senior Fluid Systems Engineer I
Long Beach, California, United States
$115k-$144k/yr OnsiteFull Time
5+ YOE5+ years designing and operating fluid systems; bachelor's in mechanical engineering; strong fundamentals in fluids and thermodynamics.
Python, Siemens NX, REFPROP, GFSSP
1mo
Save
Mark Applied
Hide
Manufacturing Systems Engineer
Los Angeles, California, United States
$90k-$175k/yr OnsiteFull Time
2+ YOEB.S. in engineering, 2+ years manufacturing operations or production engineering experience, MES/ERP experience, software aptitude (SQL, Python, JavaScript), dashboard and data-analysis skills, strong problem solving and communication, ability to work extended hours/weekends.
MES, ERP, SQL, Python, JavaScript
1w
Save
Mark Applied
Hide
Space Systems Engineer (Temporary)
Los Angeles, California, United States
RemoteFull Time
10+ YOE10+ years spacecraft systems engineering experience; expertise in on-orbit operations, orbital mechanics, orbital modeling/simulation, launch vehicle integration; Top Secret/SCI clearance and U.S. citizenship required; proficiency with Microsoft Word, Excel, and PowerPoint.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint
1mo
Save
Mark Applied
Hide
Operating Engineer, Temp-to-hire
Los Angeles, California, United States
$37/hr OnsiteFull Time, Temporary
2+ YOE2+ years maintaining commercial/industrial building systems; associate degree or equivalent in HVAC/mechanical/electrical or apprenticeship; experience with BMS/CMMS and Microsoft Office; ability to troubleshoot mechanical, electrical, and life-safety systems; ability to lift 50 lbs; COVID-19 vaccination required.
BMS, Alerton, CMMS, Microsoft Office
1d
Save
Mark Applied
Hide
Associate Mission Systems Engineer
Seal Beach or Herndon or Aurora or El Segundo
$100k-$136k/yr OnsiteFull Time
Bachelor's in engineering or related field, active U.S. Top Secret/SCI clearance, proficiency with MATLAB and Python, experience in mission modeling, GNC or spacecraft operations, and MBSE preferred.
MATLAB, Python
1mo
Save
Mark Applied
Hide
IT Systems Engineer II
La Mirada or United States
$58-$67/hr HybridFull Time
2+ YOE2+ years systems engineering (3+ IT experience preferred). Expertise in Linux/Windows/macOS administration, cloud platforms (AWS, Azure), containerization (Kubernetes), GitOps, Ansible, identity and endpoint management, automation/IaC, security best practices, and use of AI for operational tasks.
Linux, Windows, macOS, iOS, Kubernetes, Google Workspace, Zoom, Microsoft 365, AWS, Azure, GitOps, Ansible, Entra ID, Intune, SCCM, Jamf
1mo
Save
Mark Applied
Hide
Senior Avionics Systems Test Engineer, Operations
Long Beach, California, United States
$148k-$204k/yr OnsiteFull Time
5+ YOEBS/MS/PhD in EE/CE/CS/Aerospace, 5+ years integrated systems test experience, proficiency with Python or MATLAB, experience validating complex electrical and software systems, and test planning/verification skills.
Python, MATLAB, Zuken, NX, Teamcenter, Altium Designer, Ethernet, CAN, UART, SPI
3mo
Save
Mark Applied
Hide
Senior/Staff ML Systems Engineer
Los Angeles, California, United States
$180k-$200k/yr RemoteFull Time
5+ YOE5+ years building and operating production ML systems; strong software engineering, autonomous work style, GPU/accelerated workloads experience, data pipelines, CI/CD and orchestration expertise.
GPU, CUDA, Python, Docker, Kubernetes, TensorFlow, PyTorch, MLflow, CI/CD
2w
Save
Mark Applied
Hide
Spacecraft Data Systems Engineer - Blue Ring
Reston or Huntsville or Denver or Seattle or Los Angeles
$134k-$203k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
8+ YOEB.S. in computer science/engineering/IT/applied math, 8+ years spacecraft development and operations, experience with Command & Telemetry Databases and CCSDS, proficiency in Java/Python/JavaScript/C/C++, familiarity with flight software and C2 tools, ability to work with cross-functional teams; U.S. work authorization required.
CCSDS, Java, Python, JavaScript, C, C++, Command and Telemetry Database (CTDB), Command and Control (C2), Flight Software (FSW), Jira, GitLab, CI/CD pipelines, Defense Biometric Identification System (DBIDS)
3w
Save
Mark Applied
Hide
Consulting Systems Engineer (Los Angeles, CA) - Operational Technology (OT) Modernization
Los Angeles or Orange County
$150k-$200k/yr OnsiteFull Time
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
12h
Save
Mark Applied
Hide
Cloud Systems Engineer III
Santa Ana, California, United States
$123k-$135k/yr HybridFull Time
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
4w
Save
Mark Applied
Hide
Building Automation Systems (BAS) Facilities Engineer II
Tempe or Irvine or Santa Ana or Lafayette
$84k-$126k/yr HybridFull Time
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
2mo
Save
Mark Applied
Hide
Senior Network Engineer, Factory Systems and Operational Technology
Costa Mesa, California, United States
$150k-$220k/yr OnsiteFull Time
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
3w
Save
Mark Applied
Hide
Protection Engineer
Rosemead, California, United States
HybridFull Time
5+ YOEBachelor's degree in engineering or a scientific/math field, 5+ years engineering experience in operations/production/construction/maintenance, Class C driver, experience in power system protection, relay settings, fault analysis, and protection software.
ASPEN, CAPE, ETAP, CYME
Explore Jobs
Expand Your Job Search
Top Cities Near Riverside for Operating Systems Engineer
- Operating Systems Engineer jobs in Los Angeles, CA
- Operating Systems Engineer jobs in Long Beach, CA
- Operating Systems Engineer jobs in Anaheim, CA
- Operating Systems Engineer jobs in Santa Ana, CA
- Operating Systems Engineer jobs in Irvine, CA
- Operating Systems Engineer jobs in San Bernardino, CA
- Operating Systems Engineer jobs in Fontana, CA
- Operating Systems Engineer jobs in Moreno Valley, CA
- Operating Systems Engineer jobs in Huntington Beach, CA
- Operating Systems Engineer jobs in Garden Grove, CA
- Operating Systems Engineer jobs in Rancho Cucamonga, CA
- Operating Systems Engineer jobs in Ontario, CA
- Operating Systems Engineer jobs in Corona, CA
- Operating Systems Engineer jobs in Pomona, CA
- Operating Systems Engineer jobs in Pasadena, CA
- Operating Systems Engineer jobs in Orange, CA
- Operating Systems Engineer jobs in Fullerton, CA
- Operating Systems Engineer jobs in Victorville, CA
- Operating Systems Engineer jobs in El Monte, CA
- Operating Systems Engineer jobs in Downey, CA