Supervising Communications Technician County of OrangeSupervising Communications TechnicianOrange County, CA$88,982.40–$119,704 / yearThe Division provides centralized countywide coordinated communications systems for all local public safety agencies; installation and maintenance of communications and electronic equipment (microwave equipment, 9-1-1 dispatch equipment, mobile and portable radios, closed circuit television, surveillance, security electronic systems within the jail system, sound and video systems); operational and maintenance support to the coordinated communications systems; engineering and frequency management; and serves as the central coordinator/program manager for the operation and maintenance of the 800 MHz Countywide Coordinated Communications System (CCCS) and 900 MHz paging system. Each section maintains a staff of Managers, Engineers, Technicians, and support staff to provide a high level of operational and technical expertise to various public safety functions including Law Enforcement, Fire Services, Emergency Medical Services, Lifeguard, Park Rangers, Public Works, Local Government, Courts, County and City jails, and Probation facilities.
Electronic Technician A – Communications (Data) AmentumElectronic Technician A – Communications (Data)Orange, FloridaTwo (2) years of experience as an Electronic Technician B or five (5) years of electronics technician experience related to the systems, subsystems and operations required to maintain Communications systems. Experience working on one or more of the following systems: TMS-3000, FCC-100s, Orion DRCS, KU Band Satellite Communications, ATM Technology, WANIU, IDNX, Timeplex, Alcatel Microwave and HD-SDI Video.
Senior Communications Technician County of OrangeSenior Communications TechnicianOrange County, CA$75,712–$102,065.60 / yearThese sites house the 6 simulcast 800 MHz interoperable Countywide Coordinated Communications Systems, numerous VHF, UHF and 800 MHz mutual aid radio systems, the County's 900 MHz paging system, 50 high capacity digital microwave transmitter/receivers and several Alert & Warning radio systems utilized for public and crisis management notification during emergencies. Each of these systems directly support all Orange County public safety agencies including county law enforcement (Sheriff, Probation, District Attorney), all city police departments, the Orange County Fire Authority, all city fire departments, all paramedic and hospital communications, all city and county lifeguards, as well as all city and county public works and public utility departments.
Digital Communications Systems Technician 872 Global Service ResourcesDigital Communications Systems Technician 872Alhambra, CA$30–$35 / hourSupport PBX, key telephone systems, cloud communications (Microsoft Teams, WebEx, Zoom), voicemail, IVR, and call recording platforms. All employees are required to comply with E-Verify, an Internet-based system operated by the Department of Homeland Security (DHS) in partnership with the Social Security Administration (SSA).
Two Way Radio Communications Service Technician Hytera USTwo Way Radio Communications Service TechnicianIrvine, CaliforniaHytera US Inc has an experienced staff of dedicated radio professionals that have been implementing innovative radio communication solutions in the US for more than 15 years and are established specialists in DMR, Push-to-Talk over Cellular, and related communications technologies. Working closely with the Service Manager, Sales team, and customers, this position ensures products are properly configured, repaired, tested, and supported throughout their lifecycle.
SCA - Communication Systems Technician, FAA Parsons CorpSCA - Communication Systems Technician, FAACA$15.68–$71.30 / hourThe statement of work includes a variety of activities that support the FAA's Capital Investment Plan (CIP) and certain reimbursable programs, the FAA NextGen Program, national security programs and aviation safety. Specifically, work includes site selection and engineering, construction, environmental and fire/life safety, equipment installation and testing, drafting, contract surveillance, and other technical services as required.
NewCommunications AutoCAD Drafter / OSP Design Technician (“Planner I, II, III”) Page Mechanical GroupCommunications AutoCAD Drafter / OSP Design Technician (“Planner I, II, III”)Ontario, CAJob Title Communications AutoCAD Drafter / OSP Design Technician (“Planner I, II, III”)Reports To: Manager, Construction Project ManagementEmployment Status: Hourly (Non-exempt)Job Summary: We are seeking a detail-oriented AutoCAD Drafter to join our team. Manual Dexterity: Regular use of hands and fingers to handle or feel objects, tools, or controls (e.g., typing, using a mouse, handling documents).Reaching: Occasionally required to reach with hands and arms.
Communications AutoCAD Drafter / OSP Design Technician (“Planner I, II, III”) HHS Construction, a Congruex companyCommunications AutoCAD Drafter / OSP Design Technician (“Planner I, II, III”)Ontario, CA$27–$40 / hourAs the Communications AutoCAD Drafter / OSP Design Technician, your customers are engineering teams, project managers, field personnel, clients, and permitting agencies, and you will make meaningful contributions to the company's success through technical accuracy, quality designs, and timely project delivery. As the Communications AutoCAD Drafter / OSP Design Technician (Planner I, II, III) , you will ultimately be responsible for designing outside plant (OSP) fiber optic and coaxial network infrastructure, preparing engineering drawings, and supporting telecommunications network deployments.
Communications AutoCAD Drafter / OSP Design Technician ("Planner I, II, III") Congruex LLCCommunications AutoCAD Drafter / OSP Design Technician ("Planner I, II, III")Ontario, CAAll Job Postings Congruex APAC Congruex Corporate CHC Consulting Gudenkauf HHS Construction Southeast Utilities of Georgia Terra Technologies True North Management Services White Construction. Communications AutoCAD Drafter / OSP Design Technician ("Planner I, II, III") - Ontario, CA Skip To Content.
Low Voltage Technician II IES CommunicationsLow Voltage Technician IIIrvine, CaliforniaFull timeTools: screwdriver (regular and Phillips), drywall saw, torpedo level, tape measure, snips (with belt sheath), pliers (needle nose and channel locks), hammer, cable stripper, flashlight, and gloves. The Communications Technician II performs testing: continuity test horizontal and riser cable; use of volt-ohmmeter; troubleshoot opens, crosses, shorts and transpose pairs on horizontal and riser cable; use a tone set.
Low Voltage Technician II IES Holdings IncLow Voltage Technician IIIrvine, CALicense Required No Minimum Education High School Overview IES is a national provider of industrial products and infrastructure services to a variety of end markets, including electrical, mechanical and communications contracting solutions for the commercial, industrial, residential and renewable energy markets. Tools: Tools: screwdriver (regular and Phillips), drywall saw, torpedo level, tape measure, snips (with belt sheath), pliers (needle nose and channel locks), hammer, cable stripper, flashlight, and gloves.
Network Operations Engineer (IT Communications Analyst III) County of RiversideNetwork Operations Engineer (IT Communications Analyst III)Riverside, CAFull timeCandidates should have proficient experience in implementing, maintaining, and troubleshooting large-scale TCP/IP-based networks, including Wide Area Networks (WANs), campus networks, wireless networks, data center networks, DMZ environments, and DNS architecture. Key responsibilities also include the configuration, installation, and maintenance of enterprise-grade hardware, including Cisco routers and switches, Aruba switches and wireless access points, Ciena routers, Clearpass, CradlePoint cellular routers, Fortinet Firewalls and Palo Alto firewalls.
Fiber Network Field Technician Frontier Communications Parent IncFiber Network Field TechnicianSANTA FE SPRINGS, CA$24.74–$46.70 / hourThird consideration will be given to an individual who in the last ten (10) years has successfully held the position of Cable Splicer, Communications Specialist, Customer Engineer-Data Applications, Internal Communications Technician, Public Access Sales Technician, Collector Maintainer, Senior Communications Specialist, or who possess the equivalent experience (i.e., other telecommunications experience). Fourth consideration will be given to an individual who in the last ten (10) years has successfully held the position of Buried Service Wire Technician, Equipment Installer, Equipment Maintainer, Frame Worker, Line Worker, Plant Construction Installer, or who possess the equivalent experience (i.e., other telecommunications company experience).
Service Repair Technician Car Lux Inc.Service Repair TechnicianInglewood, California$17–$30Responsibilities: Perform routine automotive maintenance services, including oil changes, filter replacements, fluid checks, tire rotations, and change brakes. Sonny and Shaun still remember their first customers, and it also helps when they still send family members and relatives to enjoy the car buying experience at Car Lux.
Maintenance Technician - Watson Kinder MorganMaintenance Technician - WatsonLONG BEACH, California$47–$61 / hourFull timeField activities may include walking to and amidst work and/or construction sites, climbing in and out of trenches, working around heavy equipment, negotiating rough terrain, areaof loose rock and working in confined spaces. Must be able to climb tanks (averaging about 60 steps) safely and without assistance, including holding on to a handrail with one hand and carrying equipment (such as tank gauging tools) and/or tool bag in other hand.
Machine Repair Technician Fitness Machine TechniciansMachine Repair TechnicianBurbank, CaliforniaAt Fitness Machine Technicians, we take pride in offering the industry's only Certified Fitness Equipment Technician Training Program , meticulously designed to empower technicians like you. Our program stands out by providing the most comprehensive training available, equipping participants with the skills necessary for maintenance and repair across all equipment types and manufacturers.
Installation and Service Technician (Low Voltage/Fire/Security/AV) BARTON INTEGRATION LLCInstallation and Service Technician (Low Voltage/Fire/Security/AV)Irvine, CA$75,000–$95,000 / yearManufacturer certifications in access control, video surveillance, and intrusion systems a plus (e.g., Bosch, Avigilon Alta, LenelS2, Brivo, Genea, Kisi, Honeywell, Axis, Hanwha, Salient, among many best in class technology solutions). Technicians are responsible for installing, servicing, and supporting cutting-edge low-voltage systems including security, fire, AV, and network infrastructure.
SCA - Telecommunications Installation Technician, FAA Parsons CorpSCA - Telecommunications Installation Technician, FAACA$15.68–$71.30 / hourThe statement of work includes a variety of activities that support the FAA's Capital Investment Plan (CIP) and certain reimbursable programs, the FAA NextGen Program, national security programs and aviation safety. Specifically, work includes site selection and engineering, construction, environmental and fire/life safety, equipment installation and testing, drafting, contract surveillance, and other technical services as required.
Maintenance Technician - Colton Kinder Morgan, Inc.Maintenance Technician - ColtonBloomington, CAFull timeField activities may include walking to and amidst work and/or construction sites, climbing in and out of trenches, working around heavy equipment, negotiating rough terrain, areas of loose rock and working in confined spaces. Must be able to climb tanks (averaging about 60 steps) safely and without assistance, including holding on to a handrail with one hand and carrying equipment (such as tank gauging tools) and/or tool bag in other hand.
Commercial General Repair Technician III BrandingCommercial General Repair Technician IIICerritos, CaliforniaThis role is responsible for addressing routine maintenance requests, assisting with inspections, and supporting the overall upkeep and functionality of buildings and equipment. The Commercial General Repair Technician III performs general maintenance and repair services for commercial properties and facility systems.
Maintenance Technician NR Consulting LLCMaintenance TechnicianIrvine, CAInstall and maintain complete electrical wiring, equipment and related devices such as transformer banks, primary and branch circuit feeders, welding generators, relays, switchboards, power panels and equipment in electrically powered mobile units. Responsibilities may include some or all of the following: Working from manufacturer's specifications and engineering data, or from data developed in conjunction with manufacturing personnel, setup and prepare N/C machine tools for operation making necessary, calibrations, adjustments and modifications.
Maintenance Technician Belcan LLCMaintenance TechnicianIrvine, CA$31–$45 / hourPOSITION SUMMARY: Under minimal supervision and within a team environment, responsible for performing a variety of maintenance, repair, and troubleshooting tasks of moderate to complex scope primarily focused on CNC machinery, machine shop equipment, and building equipment. ESSENTIAL FUNCTIONS: Responsibilities may include, but are not limited to: Maintain, troubleshoot, repair, and align CNC machine tools, including diagnosing and repairing numerical control malfunctions to ensure optimal production operation.
NewMaintenance Technician II - San Onofre III Liberty Military HousingMaintenance Technician II - San Onofre IIISan Clemente, California$24–$28 / hourFull timeAbility to meet the following physical requirements: Independently lift/carry supplies or equipment up to 65 lbs; frequent reaching, stooping, bending and kneeling; extensive walking and standing, ability to climb up and down stairs/ ladders. Understand and follow safe work practices for all trades, including but not limited to: Lockout Tag-out, Confined Space Entry, use of hazardous chemicals, use of Personal Protective Equipment, Ladder Safety, and working from Elevated Surfaces.
Lead Aircraft Maintenance Technician (eVTOL) Odys AviationLead Aircraft Maintenance Technician (eVTOL)Long Beach, CaliforniaYou will be responsible for the fabrication, installation, and troubleshooting of complex avionics systems on our eVTOL aircraft, with a specific focus on integrating mission-critical payloads (sensors, cameras, communications). Our flagship aircraft Alta enables travelers to skip the big-airport hassle by using city helipads and local airports to connect cities less than 1,000 miles apart (approx 40% of flights).
Electronic Technician Maintenance Hatalom CorpElectronic Technician MaintenanceCAThe selected candidate will perform operations, maintenance, troubleshooting, repair, and readiness support for training devices including the Improved Moving Target Simulator (IMTS), Stinger Training System (STS), MADIS Desktop Trainer (MDT), and MADIS Virtual Trainer (MVT). Four (4) to six (6) years of simulator maintenance experience, including at least two (2) years maintaining complex military training systems, subsystems, or similar devices.
Facilities Maintenance Technician IDEX CorpFacilities Maintenance TechnicianSanta Ana, CA$54,200–$81,400 / yearWith interesting opportunities in engineering, marketing, sales, supply chain, operations, HR, finance, and more across more than 40 diverse businesses ( https://www.idexcorp.com/our-businesses/business-segments/ ) around the globe, chances are, we have something special for you. Essential Functions: Perform and own routine preventive maintenance on production equipment, including ovens, plating lines, vacuum furnaces, sputtering systems, leak testers, XRF units, profilometers, and other process tools.
HVAC Technician for an Apartment Community InterSolutionsHVAC Technician for an Apartment CommunityRiverside, CA$21–$23 / hourPrimary Responsibilities Include: Accurately complete service tickets and log all assigned work orders in a timely manner. The apartment maintenance team is responsible for completing service requests under the direction of the maintenance supervisor or property manager.
Maintenance Technician BelcanMaintenance TechnicianIrvine, CA$31–$45 / hourScheduled performance reviews * Referral program POSITION SUMMARY: Under minimal supervision and within a team environment, responsible for performing a variety of maintenance, repair, and troubleshooting tasks of moderate to complex scope primarily focused on CNC machinery, machine shop equipment, and building equipment. ESSENTIAL FUNCTIONS: Responsibilities may include, but are not limited to: · Maintain, troubleshoot, repair, and align CNC machine tools, including diagnosing and repairing numerical control malfunctions to ensure optimal production operation.
MAINTENANCE/PLC TECHNICIAN TS Conductor CorpMAINTENANCE/PLC TECHNICIANHuntington Beach, CASummary: As Maintenance and PLC Technician, you will be responsible for daily preventative maintenance on the manufacturing equipment including robotics, PLC's, electrical, mechanical, pneumatics, and hydraulics, as well as support facility maintenance. Ensure that safety is a primary focus, and that all potential risks are reduced to as low as reasonably achievable through regular review and update of safety procedures based on suggestions, near misses, incidents and new developments.
NewInstallation Technician, Non CDL NuCO2 Management LLCInstallation Technician, Non CDLLa Puente, CA$31 / hourPart timeWe have an immediate need for an Installation Technician who is responsible for managing on-site installation, repair, maintenance, and equipment testing for CO2 hi-pressure cylinders, and other products to customers on an established route. Maintain assigned service vehicle, tool inventory, parts inventory, and general upkeep of vehicle.
Installation Technician, CDL B NuCO2 Management LLCInstallation Technician, CDL BLa Puente, CA$32 / hourPart timeWe have an immediate need for an Installation Technician who is responsible for managing on-site installation, repair, maintenance, and equipment testing for CO2 hi-pressure cylinders, and other products to customers on an established route. CDL preferred, minimum valid US Driver’s license for at least 24 months, tanker with hazmat endorsement.
Technician Apprentice Duraserv CorpTechnician ApprenticeSanta Fe Springs, CAThis role requires the demonstration of the following competencies: Instills Trust | Communicates Effectively | Demonstrates Customer Focus | Takes Initiative | Makes Quality Decisions | Drives Growth | Ensures Accountability | Drives Results. Willingness to follow directions, manage assigned tasks, and remain flexible, while building time management and problem-solving abilities needed to work effectively in a fast-paced service environment.
Electrical & Instrumentation Technician Irvine Ranch Water DistrictElectrical & Instrumentation TechnicianIrvine, CA$89,772–$133,992 / yearWhen working in the field, must possess the strength, stamina, and mobility to perform medium to heavy physical work; to sit, stand, and walk on level, uneven, or slippery surfaces; frequently reach, twist, turn, kneel, bend, stoop, squat, crouch, grasp, and make repetitive hand movement in the performance of daily duties; to climb and descend ladders; to operate various equipment and tools; to operate a motor vehicle and visit various District sites; and vision to locate utilities and read printed materials. The Position: Under general supervision, performs a wide variety of skilled journey-level duties in maintenance, design, modification, construction, installation, and repair of electrical and instrumentation systems, machinery, motors, equipment, devices, plant control systems, and related facilities of District domestic and reclaimed water distribution systems, sewage collection systems, water treatment systems and Bio-solids and gas recovery systems.
Water Heater Installation and Service Technician-Experienced Water Heater Man, Inc.Water Heater Installation and Service Technician-ExperiencedBrea, CAThis position requires a valid California State driver’s license, legal residency, and a federal social security number or taxpayer identification number. This position requires knowledge pertaining to the servicing and installation of residential & commercial, gas & electric water heating equipment.
Field Service Technician DecisionPoint Systems IncField Service TechnicianRiverside, CAThe technician will perform on-site technical diagnostics, break fix repairs, installations and customer phone support for decision point customers, manage customer relationships, service territory and properly maintain records for all service parts. This role is critical to the health care operations, ensuring that patient labels, medical records, and prescription printers remain fully operational to support high quality patient care.
Sr. Field Performance Technician Sunrun IncSr. Field Performance TechnicianOntario, CA$29.05–$38.73 / hourRegularly exceed defined goals for field performance key performance indicators including but not limited to turnaround time, experience rating and average dispatches completed. Ability to work on rooftops with various angles and surfaces which requires frequent bending, twisting, squatting, climbing, kneeling, crawling, turning, standing, and balance.
Field Performance Technician 1 Sunrun IncField Performance Technician 1Ontario, CA$23.99–$31.99 / hourRegularly exceed defined goals for field performance key performance indicators including but not limited to turnaround time, experience rating and average dispatches completed. Ability to work on rooftops with various angles and surfaces which requires frequent bending, twisting, squatting, climbing, kneeling, crawling, turning, standing, and balance.
HVAC Technician Cisneros Brothers PlumbingHVAC TechnicianVictorville, CA$75,000–$250,000 / yearFull timeCisneros Brothers Home Services, a trusted leader in Plumbing, HVAC, Septic, and Water Damage Restoration, is seeking top-tier HVAC Service Technicians to join our growing team in Hesperia. If you're passionate about providing excellent customer service and delivering high-quality solutions, we want to hear from you!
OSP/ISP Network Technician Project Resources Group IncOSP/ISP Network TechnicianCosta Mesa, CA$40–$45 / hourComputer proficiency, along with knowledge of and experience using Google Workspace and/or Microsoft Office to create, manage, and present data and reporting to various stakeholders and management. • Solid understanding/knowledge of telecommunications technologies, including IP networking, Ethernet, MPLS, and wireless communications.
Floor Care Equipment Repair Technician ServiconFloor Care Equipment Repair TechnicianCarson, California$36–$41 / hourThe technician performs preventive maintenance, troubleshooting, equipment inspections, parts replacement, and repair services on a wide range of powered floor care equipment, including scrubbers, burnishers, vacuums, carpet extractors, sweepers, polishers, pressure washers, and ride-on units, as well as other battery-powered or electric machines. The Role: The Floor Care Equipment Repair Technician is responsible for diagnosing, repairing, servicing, and maintaining commercial and industrial floor care equipment used in janitorial and facilities operations.
Professional Aquatics Repair Technician VivoAquatics, Inc.Professional Aquatics Repair TechnicianIrvine, CA$25–$45 / hour2+ years of technical work experience with installing, repairing, maintaining commercial circulation and filtration systems and chemical automation and chemical feed devices. Provide technical support, repair and installation of VivoPoint chemical feed systems, including controllers, modems, feed devices, tubing, injectors, etc.
Installation Technicians. We are looking for experienced installers La Fence Craft IncInstallation Technicians. We are looking for experienced installersRosemead, CALa Fence Craft Inc has been serving the Rosemead community for over a decade, providing high-quality fencing solutions that enhance both functionality and aesthetics. Our commitment to excellence and customer satisfaction makes us a preferred choice among homeowners, and our supportive work environment fosters growth and teamwork among our employees.
Maintenance Technician Trinidad BenhamMaintenance TechnicianCity of Industry, California$29–$36 / hourIn partnership, and collaboration with plant operations and human resources: Performs complex periodic preventive maintenance on automated and other production systems and equipment using knowledge of solid state circuitry, electronics, electrical-mechanical devices, motors, wiring diagrams, and schematics, computers, etc. Identifies, troubleshoots, and resolves issues with equipment, devices, or products; uses precision instruments such as calipers, micrometers, and gauges to make adjustments.
Field Service Technician II Redondo Beach, CA BearCom, Inc.Field Service Technician II Redondo Beach, CARedondo Beach, CAPreferred Qualifications: • Proficient Electronics Background • Experience in Diagnosing, Repairing, Programming, and Installing RF Equipment • Understands Two-Way Radio Theory and RF Propagation Characteristics at Various Frequency Bands • Competent Operating Test Equipment (Communications Service Monitors, Wattmeters, TDRs, FDRs, Multimeters) • IP Networking Experience a Plus • Proficient in MS Office Suite (Outlook, Word, Excel) • Must Have a Valid Driver's License • Drug Screenings, Motor Vehicle Record, and Background Checks Part of the Hiring Process. UHF/VHF and 800/900 MHz Systems, Dispatch Consoles, BDA/DAS Systems, Microwave Systems, Wireless Broadband Devices, CCTV Equipment) Recommend Appropriate Equipment and Hardware That Meets Customer Requirements Some Regional and/or Overnight Travel and On-Call Hours May Be Required.
Industrial Maintenance Technician KPI SolutionsIndustrial Maintenance TechnicianIrvine, CA$75,500–$83,500The Maintenance Technician performs scheduled preventive maintenance services and participates in the installation and commissioning of KPI projects as assigned. Assist clients with parts orders, consumables, repair and return of defective parts, warranty services and requests for information pertaining to their systems.
Seasonal Field Technician Allied UniversalSeasonal Field TechnicianWestminster, CaliforniaThe Seasonal Field Technician assists in the building of a wired/wireless mesh network to enable the video images to stream back to a central location. Company Overview: Kick off your exciting career in Event Security with Allied Universal® Event Services, the go-to leader in crowd management and event staffing.
Commercial Dock & Door Service Technician National Equipment & Service CorporationCommercial Dock & Door Service TechnicianRiverside, CA, CAAbout the Role: Join our team as a Mid to Senior Level Commercial Door Installer and become a vital part of our company's mission to provide top-notch industrial door and loading dock equipment services. As a representative of our company, you will be the primary point of contact at job sites throughout the Southwest Region, including Orange County, LA County, Riverside County, San Bernardino County, and San Diego County.
Maintenance Technician The Kemtah Group, Inc.Maintenance TechnicianIrvine, CA$31–$45 / hourScheduled performance reviews Referral program POSITION SUMMARY: Under minimal supervision and within a team environment, responsible for performing a variety of maintenance, repair, and troubleshooting tasks of moderate to complex scope primarily focused on CNC machinery, machine shop equipment, and building equipment. ESSENTIAL FUNCTIONS: Responsibilities may include, but are not limited to: · Maintain, troubleshoot, repair, and align CNC machine tools, including diagnosing and repairing numerical control malfunctions to ensure optimal production operation.
Facilities Services Technician Irvine Ranch Water DistrictFacilities Services TechnicianIrvine, CA$75,480–$112,428 / yearAbility to operate equipment and machinery requiring complex and rapid adjustments, such as power hand and shop tools, mechanic's hand tools, plumbing hand and power tools, carpentry hand and power tools, shovels, motor vehicles, locksmith tools, compressors, hoists, ladders, glazing tools, drafting tools, etc. Employees work in the field and are exposed to loud noise levels, cold and hot temperatures, inclement weather conditions, road/traffic hazards, vibration, confining workspace, chemicals, mechanical and/or electrical hazards, hazardous physical substances and fumes, dust, and air contaminants.
Field Service Technician - Coffee and Espresso machine repairs Fastcility CorporationField Service Technician - Coffee and Espresso machine repairsBrea, CACommercial food service equipment repair agency looking for field service technicians to provide field services across the greater southern California region. Experience in soda fountain, coffee, general food service equipment, HVAC / refrigeration or electrical is preferred but not necessary depending on your professional background.