Electrical Design Engineer Tigo EnergyElectrical Design EngineerLos Gatos, CA$85,000–$95,000 / yearFull timeThe Electrical Desing Enginner will use scientific methodologies and circuit design techniques to develop manufacturable products from a comprehensive integrated systems perspective.
Senior Electrical Engineer JobotSenior Electrical EngineerMountain View, CA$186,000–$225,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. A rapidly growing aerospace technology company is seeking a Senior Electrical Hardware Engineer to join a highly collaborative hardware team developing next-generation spacecraft systems.
Electrical Engineer II Pinnacle Technical ResourcesElectrical Engineer IISanta Clara,, California$50–$52 / hourContractorThe specific compensation for this position will be determined by a number of factors, including the scope, complexity and location of the role as well as the cost of labor in the market; the skills, education, training, credentials and experience of the candidate; and other conditions of employment. This role involves working on cutting-edge technologies to design and develop advanced silicon anode materials for lithium-ion batteries, collaborating with cross-functional teams, and contributing to the scaling up of innovative materials and processes.
Electrical Engineer CollaberaElectrical EngineerBerkeley$85–$90 / hourTemporaryContractorPartner closely with Systems Engineering, Mechanical Engineering, Firmware, Software, Manufacturing, and Test teams. Drive PCB layout development and review for signal integrity, power integrity, manufacturability, and reliability.
NewCHIEF ENGINEER ABM IndustriesCHIEF ENGINEERSan Mateo, CA$82.14Founded in 1909, ABM serves over 20,000 clients, with annualized revenue approaching $8 billion and more than 100,000 team members in 350+ offices throughout the United States, United Kingdom, Republic of Ireland, and other international locations. From curbside to rooftop, ABM’s comprehensive services include janitorial, engineering, parking, electrical and lighting, energy and electric vehicle charging infrastructure, HVAC and mechanical, landscape and turf, and mission critical solutions.
Entry Level Electrical Engineer - Class of 2025/2026 Amphenol Communications SolutionsEntry Level Electrical Engineer - Class of 2025/2026Santa Clara, CAAmphenol High Speed and Commercial Products Groups are the market leader for high speed, high bandwidth electrical connectors for the Telecom/Datacom and Diverse markets (Mobile Networks, Storage, Servers, Routers, Switches, etc.). Amphenol offers opportunities in a variety of functions including, but not limited to, Development Engineering, Industrial Engineering, Field Applications Engineering, Sales Engineering, Process Engineering, and Mechanical Design.
Electrical Engineer - Entry to Junior Level Moffatt & NicholElectrical Engineer - Entry to Junior LevelOakland, CA$45–$60 / hourThe firm provides clients worldwide with customized service and a level of excellence that have become the firm's hallmark in several primary practice areas - ports and harbors; coastal, environmental and water resources; urban waterfronts and marinas; transportation, bridges and rail; inspection and rehabilitation; and energy. As part of the Electrical Group, the Electrical Engineer supports the planning, design and plan production for general electrical engineering on a wide variety of projects which may include lighting, power, and grounding plans, one-line diagrams, panel and cable schedules, and different project specifications.
SALUS Engineering - Mechanical / Electrical Engineer SALUS ENGINEERING INTERNATIONALSALUS Engineering - Mechanical / Electrical EngineerSANTA CLARA, CASalus Engineering International is located in Santa Clara, California, USA and has a well established USA client base as well as extensive international clientele. Strong verbal and written communication skills required to interface with a variety of clients to discuss technical issues.
Electrical Engineer Currier PlasticsElectrical EngineerSan Jose, CA$70,000–$80,000MOS Plastics Inc., a Currier company is a medical-focused company specializing in precision injection molding, automation, assembly, and packaging solutions for the healthcare and life sciences industries. This role is ideal for someone who enjoys working directly with equipment, troubleshooting systems, and contributing to the development and improvement of automated systems.
Staff Electrical Engineer Agility RoboticsStaff Electrical EngineerFremont, CA$194,000–$253,000 / yearAgility's commercially deployed humanoids operate alongside teams in warehouses, manufacturing facilities, and distribution centers—tackling physically demanding and repetitive tasks while enabling workers to focus on higher-value work. Translating product requirements into engineering specifications and ensuring cross-functional alignment across multiple domains, especially collaborating with mechanical design teams to close on PCB mechanical requirements.
Senior Electrical Engineer DexmateSenior Electrical EngineerFremont, CaliforniaExperience designing complex multilayer PCBs (8+ layers), including controlled impedance routing, mixed-signal design, and high-speed differential pairs. Perform circuit simulation (LTspice or equivalent) and systematic hardware validation using oscilloscopes, current probes, power analyzers, and spectrum analyzers.
Senior Electrical Engineer – Healthcare (OSHPD/HCAI) LuxusSenior Electrical Engineer – Healthcare (OSHPD/HCAI)Emeryville, CALead Electrical Engineer, Healthcare Electrical Engineer, OSHPD, HCAI, Healthcare Design, California Electrical Engineer, Revit, Power Distribution, Medical Facilities, MEP Engineering, BIM, Electrical Infrastructure, Emeryville Engineering Jobs, Senior Electrical Engineer, AEC Industry. With a hybrid work model and a strong emphasis on design-build delivery, Silverman & Light provides engineers with both flexibility and meaningful project ownership.
Electrical Engineer, Principal PG&E CorpElectrical Engineer, PrincipalAlameda, CAThe actual salary paid to an individual will be based on multiple factors, including, but not limited to, specific skills, education, licenses or certifications, experience, market value, geographic location, and internal equity. 13 or more years of experience in electrical utility engineering with an emphasis in design, construction, maintenance and operation of substations and equipment within the substations.
Electrical Engineer StratAcuity Staffing Partners IncElectrical EngineerFoster City, CA$81–$91 / hourIn terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.
Electrical Engineer Manpower EngineeringElectrical EngineerFoster City, CA$85–$90 / hourTemporaryManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent.
Senior Electrical Engineer Substation Trident ConsultingSenior Electrical Engineer SubstationOakland, CA$94–$97 / hourTrident Consulting is seeking a "Senior Electrical Engineer – Substation” for one of our clients in "Oakland, CA - Hybrid” — a global leader in natural gas and electricity. We specialize in contract, contract-to-hire, and direct hire placements, supporting roles across IT, data & analytics, cloud, cybersecurity, finance & accounting, HR, operations, and more.
Principal Electrical Engineer - Traction Power Parsons CorpPrincipal Electrical Engineer - Traction PowerOakland, CA$100,900–$176,600 / yearDESIRED SKILLS: • The electrical engineer shall be experienced in DC Traction Power design and the design of transformer substations Medium to Low voltage, Low Voltage (480V) Motor Control Centers and Uninterruptible Power Supply Systems. The selected candidate will lead in the design for traction power substation enclosures, site plans duct banks and ground grids for mass transit applications, including commuter rail, high-capacity mass transit and light rail.
Hardware Electrical Engineer Artech LLCHardware Electrical EngineerFoster City, CA$75–$94.81 / hourIn this highly cross-functional role, you will need to develop requirements, solve challenging design problems, create and test prototypes, and coordinate projects to meet critical company milestones. You will specify electrical component and system requirements and lead engineering discussions and development with suppliers including drawing reviews, requirement validation, and change request documentation.
Hardware Electrical Engineer Ryzen SolutionsHardware Electrical EngineerFoster City, CA$75In this highly cross-functional role, you will need to develop requirements, solve challenging design problems, create and test prototypes, and coordinate projects to meet critical company milestones. You will specify electrical component and system requirements and lead engineering discussions and development with suppliers including drawing reviews, requirement validation, and change request documentation.
Electrical Engineer Q1 Technologies, IncElectrical EngineerSan Jose, CARemote$50–$55 / hourIn this role, you'll manage electrical power distribution across complex, active facilities—helping ensure safe, accurate, and reliable system performance. We're seeking an Intermediate Electrical Engineer, join us and become part of a collaborative engineering team supporting next-generation semiconductor fabrication tools.
Senior Electrical Engineer AECOMSenior Electrical EngineerOakland, CA$140,000–$170,000 / yearBe competent in all aspects of building electrical systems design for a variety of types of projects or markets to complete routing engineering assignments and calculations + Writing reports for internal and external purposes based on findings + Stays current on codes and technologies appropriate for building electrical systems including power, lighting, telecommunications and fire alarm systems. + Professional Engineer (PE) Registration **Preferred Qualifications:** + 10+ years experience in designing building electrical systems + Strong electrical code knowledge including National Electric Code (NEC), Washington State Energy Code (WSEC), Unified Facilities Criteria (UFC), ASHRAE and International Energy Conservation Code (IECC).
Senior Electrical Engineer ProtingentSenior Electrical EngineerAlameda, CA$120,000–$200,000 / yearProtingent exists to make a positive impact and contribution to the lives of others as well as our community by providing relevant, rewarding, and exciting work opportunities for our candidates. About Protingent: Protingent is a niche provider of top Engineering and IT talent to Software, Electronics, Medical Device, Telecom, and Aerospace companies nationwide.
Electrical Engineer ProtingentElectrical EngineerMilpitas, CA$150,000–$200,000 / yearAbout Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation — from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies. Collaborate with technical experts, in-house engineers, and clients on designs from initial concept to full mass-production phases.
Senior Electrical Engineer PEAK Technical StaffingSenior Electrical EngineerSan Jose, CA$62–$72 / hourJoin our client’s team as a Senior Electrical Engineer supporting cutting-edge semiconductor manufacturing, R&D laboratories, and advanced technology facilities in the heart of Silicon Valley. Candidate Privacy To read our Candidate Privacy Information Statement, which explains how we will use your information, please navigate to https://peaktechnical.com/privacy-policy/and https://peaktechnical.com/ca-residents-privacy-rights/
Staff High Voltage Electrical Engineer, EPC Redwood Materials IncStaff High Voltage Electrical Engineer, EPCSan Francisco, CA$190,000–$252,500 / yearResponsibilities will include: Lead the design of high voltage AC electrical systems, specifically for industrial substations (69kV to 345kV) and their integration with upstream transmission lines and downstream MV distribution. Redwood is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recycling - keeping critical minerals in circulation and driving the energy transition.
Sr. or Staff Electrical Engineer Antora EnergySr. or Staff Electrical EngineerSan Jose, CA$129,000–$225,000 / yearOwn and execute advanced electrical power system studies, including load flow, short-circuit calculation, motor starting, transient stability, and arc-flash hazard analysis in absolute accordance with IEEE and NFPA guidelines. Working knowledge of equipment and cable sizing, grounding calculations, lighting, conduit/cable tray fill, and electrical studies (load flow, short circuit, protection coordination, and transient stability).
Senior Electrical Engineer SSOE, Inc.Senior Electrical EngineerSanta Clara, California$160,000–$250,000 / yearFull timeAs a leader in industry AI adoption, we empower our team to work smarter by providing responsible access to the industry leading AI Large Language Models, vibe-coding platforms, and securely integrating advanced tools into every role. Manage and execute rigorous QA/QC workflows, including peer reviews, design validation, and site walkthroughs during construction administration and system startup phases, ensuring design intent is executed as specified and system performance goals are met.
Senior Electrical Engineer WBCP, Inc.Senior Electrical EngineerSan Jose, CA$167,668.80–$214,635.20 / yearFull timeThis role is essential in connecting operations and capital delivery by providing hands on electrical engineering expertise to troubleshoot, design, and deliver complex projects that directly impact water treatment and delivery systems. The ideal candidate brings deep technical expertise in power distribution systems, strong collaboration skills, and the ability to work across departments and external agencies to ensure reliable, safe, and efficient system performance in a continuous operations environment.
Electrical Engineer - Electronic Product Assembly Artech LLCElectrical Engineer - Electronic Product AssemblyFoster City, CA$60–$70 / hourThe role will also include the assembly of cable harnesses in addition to PCB-level assembly and rework on small components while acting as the "quarterback" of the lab—ensuring all components, tools, and assets are tracked, organized, and ready for rapid-turnaround testing. As an Electronics Engineer, you will be directly working with electrical engineers to build, bring up, and rework vehicle components and PCB assemblies as well as helping scale the existing work into production.
Principal Electrical Engineer Johnson & JohnsonPrincipal Electrical EngineerSanta Clara, CA$157,000–$217,400 / yearYou'll collaborate on breakthrough medical technologies that unite multiple subject areas to build a connected digital ecosystem that advances medical professionals' skills and improves patient outcomes. At Johnson & Johnson Robotics and Digital Solutions, we're changing the trajectory of health for humanity, using robotics to enhance healthcare providers' abilities and improve patients' diagnoses, treatments, and recovery times.
Electrical Engineer 4 ICONMA, LLCElectrical Engineer 4Newark, CA$75.01–$77.74 / hourMinimum ____ years Hands-on in using the use of lab equipment (AC grid simulator, DC power supply, oscilloscope, etc.). Typical task breakdown and operating rhythm: The role will consist of running the test.
Associate Principal / Senior Electrical Engineer (MEP) ESPO CorporationAssociate Principal / Senior Electrical Engineer (MEP)San Francisco, CA$142,000–$178,000 / yearAs an Associate Principal / Senior Electrical Engineer, you will be taking ownership as a discipline leader on multiple projects. Managing complex MEP projects across numerous industries: Commercial, Medical, Biotech, Education, Transportation, and more.
Electrical Engineer Innovation ConsultingElectrical EngineerOakland, CaliforniaThe Electrical Engineer will develop and deliver engineering design packages for active T&D capital projects, working across the full range of electrical discipline deliverables from conceptual design through issued-for-construction (IFC) drawings. Candidates do not need to have led an EPC team, but must understand how design deliverables are produced, reviewed, and issued within an EPC workflow and how the electrical discipline interfaces with procurement, construction, and the owner.
Senior Electrical Engineer - Controls Panel The Kemtah Group, Inc.Senior Electrical Engineer - Controls PanelBerkeley, CA$70–$80 / hourKnowledge/Experience/Education/Skills Bachelor"s degree in electrical engineering, Mechanical Engineering, or a related field with 5+ years of relevant experience; OR Master''s degree with 3+ years of relevant experience Proficiency in panel design SW EPLAN or equivalent Demonstrated experience designing panels to NEC and UL 508A requirements Hands-on experience in testing with high voltage testing procedures and associated safety protocols Strong working knowledge of branch protection coordination, wire sizing, and power conversion device integration Experience managing third-party panel fabrication vendors through design, build, and acceptance phases Familiarity with the SW including PLM (e.g. To be considered for this role you will have a bachelor"s degree in electrical engineering, Mechanical Engineering, or a related field with 5+ years of relevant experience; OR Master''s degree with 3+ years of relevant experience.
NewSenior Electrical Engineer - Systems Johnson & JohnsonSenior Electrical Engineer - SystemsSanta Clara, CA$125,000–$201,250 / yearPreferred Skills: Agility Jumps, Circuit Designs, Critical Thinking, Electrical Engineering, Electrical Systems, Execution Focus, Lean Supply Chain Management, Predictive Maintenance, Problem Management, Problem Solving, Product Installation, Program Management, Project Reporting, Safety-Oriented, Science, Technology, Engineering, and Math (STEM) Application, Technologically Savvy, Testing. In addition, you will actively participate in design reviews and cross-functional Failure Modes and Effects Analysis (xFMEA) activities, identifying risks, driving root-cause investigations, and implementing solutions that enhance product quality, reliability, and overall system performance throughout the product development lifecycle.
Staff Electrical Engineer The Kemtah Group, Inc.Staff Electrical EngineerBerkeley, CA$70–$80 / hourProficiency in PCBA design ECAD SW Altium or equivalent Hands-on experience with sensors, power electronics (high voltage, high power, AC, SMPS, LDO), processing (MCU, MPU, SOM), networking (Ethernet, CAN-FD, isoSPI), on board communication (SPI, UART, I2C, JTAG), data acquisition (IO, ADC, DAC), and control systems (gate drivers, motor drivers, HSD) Strong understanding of safety and compliance considerations in high-power and/or chemical environments Demonstrated experience designing PCBAs and Electrical Systems to UL 991, 1973, 9540, 1998 requirements Excellent problem-solving skills, with the ability to balance speed, rigor, and safety Familiarity with the SW including PLM (e.g. Knowledge/Skills/Education/Experience Bachelor"s degree in electrical engineering, Computer Engineering, or a related field with 7+ years of relevant experience (battery or energy storage systems experience is a plus); OR Master''s degree with 5+ years of relevant experience.
Senior Electrical Engineer - The Kemtah Group, Inc.Senior Electrical Engineer -Berkeley, CA$70–$80 / hourJob Duties Collaborate with firmware, mechanical, controls, and manufacturing engineers to develop effective and reliable electrical systems PCB design: schematic capture, PCB layout, board validation and manufacturing support Prototyping and validation of new electrical circuits and systems Troubleshoot and root-case analysis systems down to the component level Sensor selection, evaluation and interface definition Clearly document design decisions, test results, and troubleshooting procedures. In this role you will be part of a team responsible for the development of electronic controls hardware for large-scale battery systems comprising a wide variety of sensors, actuators and custom electronics.
Associate Principal / Senior Electrical Engineer (MEP) – San Francisco Energi People - Construction EngineeringAssociate Principal / Senior Electrical Engineer (MEP) – San FranciscoSan Francisco, CA$175,000 / yearYou will be responsible for providing technical leadership across multiple projects while supporting clients, mentoring engineers, and driving successful project outcomes. The Role: Senior Electrical Design Engineer This is an exciting opportunity for an experienced Electrical Design Engineer to take a lead role in the delivery of complex, multidisciplinary projects.
Senior Electrical Engineer Syska Hennessy Group IncSenior Electrical EngineerSan Francisco, CAAdditional requirements of the Senior Electrical Engineer include: • Bachelor's degree in Electrical Engineering from an accredited university • Minimum of 8 years' experience working in a consulting firm • 3+ year supervisory, Project manager experience • LEED AP accreditation, highly preferred • Candidate should possess a strong ability to coordinate electrical systems with architectural, structural, electrical, and telecom, as well as its constructability and cost • Working knowledge of AutoCAD and REVIT experience • PE required. The capability to fully design mechanical systems for various building types not only commercial and mixed-use but also mission critical, life science and R+D facilities would be a major plus and good fit for this dynamic role.
Senior Electrical Engineer Santa Clara Valley Water DistrictSenior Electrical EngineerSan Jose, CA$175,219.20–$224,286.40 / yearThis role is essential in connecting operations and capital delivery by providing hands on electrical engineering expertise to troubleshoot, design, and deliver complex projects that directly impact water treatment and delivery systems. The ideal candidate brings deep technical expertise in power distribution systems, strong collaboration skills, and the ability to work across departments and external agencies to ensure reliable, safe, and efficient system performance in a continuous operations environment.
NewElectrical Engineer AECOMElectrical EngineerSan Francisco, CAWe invite you to bring your bold ideas and big dreams and become part of a global team of nearly 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. AECOM Technical Services, Inc. is seeking an Electrical Engineer in San Francisco, CA: Perform technical calculations and design, understand project requirements and the effort required to complete work, and apply critical thinking to quickly recognize issues and be part of the solution.
Electrical Engineer, Platform Realization, Hardware Google LLCElectrical Engineer, Platform Realization, HardwareMountain View, CAWork with all cross-functional teams (software, factory test, signal integrity, ECAD, product design, program management, etc.) to design, implement, and deliver prototype hardware to enable development activities. Teams across this area research, design, and develop new technologies to make our user"s interaction with computing faster and more seamless, building innovative experiences for our users around the world.
Regulatory Compliance Engineer - Electrical Safety NVIDIA CorpRegulatory Compliance Engineer - Electrical SafetySanta Clara, CADevelop and implement safety testing and certification plans, coordinate with government-accredited laboratories, optimize testing processes for efficient execution, review test data and reports to ensure successful certification, assist customers, and troubleshoot any issues. Write Compliance Product Design Requirements summarizing safety compliance requirements and collaborating with cross-functional teams (e.g., Architecture Engineer, EE, Layout Engineer, Mechanical Engineer, Thermal Engineer, Verification Engineer, Operations) to incorporate safety considerations into product development.
NewSenior NPI Systems Electrical Engineer Halo Industries, Inc.Senior NPI Systems Electrical EngineerSanta Clara, CA$115,000–$140,000This role is at the intersection of design and manufacturing and therefore involves collaboration with design, manufacturing, and quality teams to identify potential issues, develop solutions, and implement processes for a smooth New Product Introduction (NPI). NPI Systems Electrical Engineer will operate in a fast-paced, startup-like environment where machine designs are still maturing, as we transition new product designs from the development phase to pilot manufacturing.
Senior Electrical Engineer Ceribell IncSenior Electrical EngineerSunnyvale, CA$138,000–$154,000 / yearThe Ceribell System is a novel, point-of-care electroencephalography ("EEG") platform specifically designed to address the unmet needs of patients in the acute care setting, and is being used in hundreds of community hospitals, large academic facilities and major IDN''s across the country. These laws and implementing regulations require Ceribell to provide government agencies with HCPs' names, addresses and the type of payments or other value received, generally for public disclosure.
Senior Electrical Engineer - Pleasanton, CA Calyxo IncSenior Electrical Engineer - Pleasanton, CAPleasanton, CA$165,000–$175,000 / yearSelect sensor, actuator, power electronics, and protection components for controls systems with attention to accuracy, drift, long term reliability, environmental exposure (heat, fluids, cleaning agents), component lifecycle, and applicable derating/tolerancing. Provide technical oversight to contract design houses and manufacturing partners, including review of schematics, layouts, design changes, test plans, and documentation, ensuring adherence to design intent, quality expectations, and regulatory requirements.
Electrical Engineer - Manufacturing Test Heron PowerElectrical Engineer - Manufacturing TestScotts Valley, CaliforniaWorking closely with design engineers, manufacturing partners, and external fixture vendors, you will support the development and deployment of production test systems for PCBAs, subsystems, and integrated products. You will gain hands-on experience developing test fixtures, supporting Design for Manufacturability (DFM) and Design for Test (DFT) initiatives, troubleshooting hardware issues, and helping bring new products from prototype through production.
Sr. Staff Electrical Engineer, Vehicle Architecture ALSOSr. Staff Electrical Engineer, Vehicle ArchitecturePalo Alto, CaliforniaWe’re a passionate team of builders, dreamers, doers and innovators, focused on creating entirely new (not to mention, innovative and delightful) vertically integrated, small EVs designed to meet the global mobility challenges of today and tomorrow. Drive electrical architecture of micro-mobility platforms, including power distribution, energy storage, compute, sensors, lighting, safety systems, and connectivity modules.
Sr. Staff Electrical Engineer, High Speed Design ALSOSr. Staff Electrical Engineer, High Speed DesignPalo Alto, CaliforniaWe’re a passionate team of builders, dreamers, doers and innovators, focused on creating entirely new (not to mention, innovative and delightful) vertically integrated, small EVs designed to meet the global mobility challenges of today and tomorrow. Partner with Systems, FW, Mechanical, Thermal and Test engineers to ensure high reliability and seamless system integration, robust physical packaging of high-density boards, optimal thermal management, and comprehensive testability for mass production.
Electrical Engineer SauronElectrical EngineerSan Francisco, CaliforniaYou will work alongside cross-functional teams including perception engineering, software engineering, mechanical engineering, sales, and security operations to deliver world-class products. Board Level Design: Starting from electrical architecture to schematic capture and layout for IoT-connected devices, camera systems, motorized mechanisms, and power systems.