Instrument Test Technician {170863} A-Line Staffing SolutionsInstrument Test Technician {170863}Sparks Glencoe, MD$25 / hourFull timeIf interested in this Test Technician 1, Instruments position, contact Milos Pavlovic at 586-788-7509 or mpavlovic@alinestaffing.com. Perform production assembly operations and complete system analysis/testing to optimize instrument performance.
Test Relay Technician Constellation EnergyTest Relay TechnicianBaltimore, MDPerform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department. Technologies include, but are not limited to, generator testing, voltage regulator testing, motor testing, Doble testing, protective relay testing and calibration, as well as breaker maintenance.
54194 Entry Level Automotive Mechanic / Lube Technician Tate Dodge Chrysler Jeep, Inc.54194 Entry Level Automotive Mechanic / Lube TechnicianGlen Burnie, MDFull timeWhether you're a recent technical school graduate or an experienced oil change master, Tate offers a chance to kick-start your career in automotive repair! Work alongside skilled technicians to learn how to perform quality vehicle service maintenance and repairs.
63689 Automotive Technician Floyd MeGee Motor Company63689 Automotive TechnicianSalisbury, MDFull timeDiagnose and repair vehicle automotive systems including engine, transmission, electrical, steering, suspension, braking, air conditioning, etc. to specification. Explain mechanical diagnoses and required repairs in a non-technical manner to service advisors and customers.
63689 Chrysler Certified Master Automotive Technician Floyd MeGee Motor Company63689 Chrysler Certified Master Automotive TechnicianSalisbury, MDFull timeConfer with customers or service advisors to obtain descriptions of vehicle problems, and to discuss work to be performed and future repair requirements. Communicate directly with the service advisor so that customers can be informed if any additional service is needed Providing an estimate of time needed for additional repairs.
Construction Material Field Technician Hillis-CarnesConstruction Material Field TechnicianAberdeen, MDFull timeJust ask Engineering News-Record who named us to its ranking of "Top 500 Design Firms in the Nation" for our continued rapid growth and success. Hillis-Carnes Engineering Associates (HCEA) is a top-tier, multi-disciplined engineering firm with 30 years of demonstrated success (and counting!)
Rail Services Technician System OneRail Services TechnicianLandover Hills, MD$48,000–$70,000 / yearPreparation of the job to be be accomplished by studying any document related but not limited to assembly instructions, FMIs, blueprint specifications, as well as have a good understanding of parts lists, subassemblies, tools, and materials. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
NewMaintenance Technician I Summit School ServicesMaintenance Technician IOdenton, MDYou’ll work across yellow-bus systems—preventive maintenance, DOT/state inspections and DVIR readiness, air/hydraulic braking, steering/suspension, electrical/charging, HVAC, drivetrains/transmissions, and engine performance—while modeling craftsmanship, safety, and uptime. As a Fleet Technician I supporting our school bus fleet, you’ll handle advanced diagnostics, inspections, and repairs on Summits Fleet of vehicles so routes leave safe and on time.
Service Technician AmeriGas Propane, Inc.Service TechnicianFrederick, MDSuccessful applicants shall be required to pass a pre-employment drug screen as a condition of employment, and if hired, shall be subject to substance abuse testing in accordance with AmeriGas policies. The Company offers a wide array of comprehensive benefit programs and services including medical, dental, vision, flexible spending and health savings accounts to our benefits-eligible employees.
HVAC Technician STAMPEDE VENTURES INCHVAC TechnicianBaltimore, MDHandle and repair test equipment, complex centrifugal chillers, direct expansion and chilled water-based cooling systems, large air handlers, electronic and pneumatic direct digital control systems, and air distribution systems. Perform repairs and maintenance of reach in, walk in, stand alone ice machines, central plan chillers, pumps, free standing A/C units, refrigerators, roof top cooling units, and guest rooms A/C units.
Electrical Technician AmrizeElectrical TechnicianCape Saint Claire, MDPerform all electrical repair work, preventative maintenance and emergency call-out tasks on plant electrical equipment while always maintaining code regulations, good craftsmanship, quality and professionalism. Employees that are required to wear respirators must be clean shaven where the respirator seal meets the face in order to pass the qualitative and quantitative fit tests.
HVAC/DDC Technician – Operations & Maintenance System OneHVAC/DDC Technician – Operations & MaintenanceCatonsville, MD$36–$40 / hourSupport the operation, inspection, troubleshooting, and maintenance of HVAC equipment, Building Automation Systems (BAS), Direct Digital Control (DDC) systems, steam and hot water systems, chillers, air handling units, geothermal heat pumps, and related energy management equipment. Complete scheduled preventive maintenance activities, inspect electrical connections, motors, bearings, belts, filters, refrigerant systems, pumps, valves, and safety devices, and ensure compliance with safety and regulatory requirements.
NewPest Control Technician Ecolab Inc.Pest Control TechnicianCumberland, MD$53,600–$80,300 / yearBuilding on a century of innovation, our 48,000 associates help deliver comprehensive science-based solutions, data-driven insights and world-class service to advance food safety, maintain clean and safe environments, and optimize water and energy use, and improve operational efficiencies and sustainability for customers in the food, healthcare, life sciences, hospitality and industrial markets in more than 170 countries around the world. To meet customer requirements and comply with local or state regulations, applicants for certain customer-facing roles may need to: - Undergo additional background screens and/or drug/alcohol testing for customer credentialing.
NewEXPRESS LUBE TECHNICIAN: 2ND SHIFT Carter MachineryEXPRESS LUBE TECHNICIAN: 2ND SHIFTWaldorf, MD$34.97–$43.96 / hourRegularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl and talk or hear. In addition to base pay, the compensation package may include participation in performance-based incentive programs (e.g., discretionary or non-discretionary plans), as well as overtime eligibility depending on the role.
NewEXPRESS LUBE TECHNICIAN: WEEKEND SHIFT Carter MachineryEXPRESS LUBE TECHNICIAN: WEEKEND SHIFTMyersville, MD$34.97–$43.96 / hourRegularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl and talk or hear. In addition to base pay, the compensation package may include participation in performance-based incentive programs (e.g., discretionary or non-discretionary plans), as well as overtime eligibility depending on the role.
ELECTRIC POWER GENERATION (EPG) FIELD TECHNICIAN Carter MachineryELECTRIC POWER GENERATION (EPG) FIELD TECHNICIANElkridge, MD$35.32–$50.91 / hourMinimum three years’ experience diagnosing, troubleshooting, and repairing complex issues and performing heavy electrical repairs to electrical generator systems and related equipment. Regularly required to stand, walk; use hands to finger, handle, or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl and talk or hear.
Body Shop Technician I PenskeBody Shop Technician IAnnapolis Junction, MDFull timeDuties may include the overhaul, adjustment, replacement and repair of all series of motor truck and trailer equipment including, but not limited to the following: Cab/ Sheet Metal Repair, Fiberglass Repair, Composite Bonding/ Repair, Welding/ Fabricating, Frame Straightening/ Alignment, Suspension Repair/ Alignment, Box Repair/ Replacement, Air Conditioning Systems, Electrical/ Brake/Cooling Systems, Surface Preparation, and Paint/ Mixing/ Tinting/ Blending. As an experienced Body Shop Technician with Penske, you’ll use industry-leading technology and repair techniques – plus cutting-edge diagnostic equipment – to get our customers' state-of-the-art vehicles back up and running in high-quality condition.
NewBody Shop Technician II Penske Truck RentalBody Shop Technician IIANNAPOLIS JUNCTION, MDDuties may include the overhaul, adjustment, replacement and repair of all series of motor truck and trailer equipment including, but not limited to the following: Cab/ Sheet Metal Repair, Fiberglass Repair, Composite Bonding/ Repair, Welding/ Fabricating, Frame Straightening/ Alignment, Suspension Repair/ Alignment, Box Repair/ Replacement, Air Conditioning Systems, Electrical/ Brake/Cooling Systems, Surface Preparation, and Paint/ Mixing/ Tinting/ Blending. • Willingness to travel as necessary, work the required schedule, work at the specific location required, complete Penske employment application, submit to a background investigation (to include past employment, education, and criminal history) and drug screening are required.
NewBody Shop Technician I Penske Truck RentalBody Shop Technician IANNAPOLIS JUNCTION, MDDuties may include the overhaul, adjustment, replacement and repair of all series of motor truck and trailer equipment including, but not limited to the following: Cab/ Sheet Metal Repair, Fiberglass Repair, Composite Bonding/ Repair, Welding/ Fabricating, Frame Straightening/ Alignment, Suspension Repair/ Alignment, Box Repair/ Replacement, Air Conditioning Systems, Electrical/ Brake/Cooling Systems, Surface Preparation, and Paint/ Mixing/ Tinting/ Blending. As an experienced Body Shop Technician with Penske, you’ll use industry-leading technology and repair techniques – plus cutting-edge diagnostic equipment – to get our customers' state-of-the-art vehicles back up and running in high-quality condition.
Computer Field Technician U.S. NavyComputer Field TechnicianWestminster, MDWhat to Expect Hands on technical work that blends classroom, computer based training, and intensive lab practice; frequent troubleshooting under time pressure to restore mission critical combat systems and communications; strict adherence to safety procedures, configuration control, technical documentation, and test routines; team based maintenance and watchstanding afloat and ashore, often on rotating shifts to support around the clock operations; progressive responsibility as you qualify on systems, earn Navy Enlisted Classifications, and advance in rate. Enlist under the Advanced Electronics and Computer Field program, with final placement into the Electronics Technician or Fire Controlman rating during initial training at Great Lakes, based on performance and Navy needs; maintain AECF eligibility throughout training in order to retain any accelerated advancement benefits; fleet conversion into ET or FC from another rating may be possible for qualified Sailors, subject to screening and community manning.
Electronics Technician U.S. NavyElectronics TechnicianBaltimore, MDWhat to Expect Hands on technical work that blends classroom, computer based training, and intensive lab practice; frequent troubleshooting under time pressure to restore mission critical combat systems and communications; strict adherence to safety procedures, configuration control, technical documentation, and test routines; team based maintenance and watchstanding afloat and ashore, often on rotating shifts to support around the clock operations; progressive responsibility as you qualify on systems, earn Navy Enlisted Classifications, and advance in rate. Enlist under the Advanced Electronics and Computer Field program, with final placement into the Electronics Technician or Fire Controlman rating during initial training at Great Lakes, based on performance and Navy needs; maintain AECF eligibility throughout training in order to retain any accelerated advancement benefits; fleet conversion into ET or FC from another rating may be possible for qualified Sailors, subject to screening and community manning.
EXPRESS LUBE TECHNICIAN: WEEKEND SHIFT Carter Machinery Company, IncEXPRESS LUBE TECHNICIAN: WEEKEND SHIFTMyersville, MD$34.97–$43.96 / hourRegularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl and talk or hear. In addition to base pay, the compensation package may include participation in performance-based incentive programs (e.g., discretionary or non-discretionary plans), as well as overtime eligibility depending on the role.
EXPRESS LUBE TECHNICIAN: 2ND SHIFT Carter Machinery Company, IncEXPRESS LUBE TECHNICIAN: 2ND SHIFTAbingdon, MD$30.45–$38.28 / hourRegularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl and talk or hear. In addition to base pay, the compensation package may include participation in performance-based incentive programs (e.g., discretionary or non-discretionary plans), as well as overtime eligibility depending on the role.
HVAC Technician 2 Sunbelt RentalsHVAC Technician 2Beltsville, MD$24.58–$35.33 / hourPosition Objective: The HVAC Technician 2 demonstrates a level of professionalism through positive communication and appearance and provides an exemplary level of service to our customers. Sunbelt offers team members the following paid time off from work, subject to Sunbelt's policies (unless specified in a collective bargaining agreement): 12-25 vacation days depending on years of service.
ELECTRIC POWER GENERATION (EPG) FIELD TECHNICIAN Carter Machinery Company, IncELECTRIC POWER GENERATION (EPG) FIELD TECHNICIANElkridge, MD$35.32–$50.91 / hourMinimum three years' experience diagnosing, troubleshooting, and repairing complex issues and performing heavy electrical repairs to electrical generator systems and related equipment. Regularly required to stand, walk; use hands to finger, handle, or feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl and talk or hear.
Quality Control Technician II AmrizeQuality Control Technician IIWaldorf, MDRequired Work Experience: 3-5 years of hands-on experience in asphalt, construction materials testing, or quality control, with demonstrated progression into advanced QC responsibilities (QC Technician III level or equivalent preferred) . Amrize, a leading supplier of quality construction building materials in the United States, has an immediate opening for a Quality Control Technician II in the asphalt division at our Waldorf, MD location.
Mechanical Maintenance Technician AmrizeMechanical Maintenance TechnicianHighfield-Cascade, MDTo work as part of a team to ensure the continuous operation of the cement plant and associated facilities in order to maximize operational efficiency in an environment of continuous learning and improvement; to maintain, troubleshoot and repair plant equipment in accordance with plant needs within MSHA, and Amrize safety guidelines. Employees that are required to wear respirators must be clean shaven where the respirator seal meets the face in order to pass the qualitative and quantitative fit tests.
NewTraining Coordinator Community Options, Inc.Training CoordinatorIndiana, PA$49,000–$55,000 / yearFull timeMaintain current list of certified trainers and notify trainers when certifications are due for renewal and secures documentation upon completion for trainer records. Confer with direct supervisor to gain knowledge of specific work situations requiring employees to better understand changes in policies, procedures, regulations, and technologies.
Electronics Test Technician I eCom Solutions IncElectronics Test Technician IGermantown, MDTeam members collaborate across engineering, production, and quality assurance functions to deliver innovative products that meet the evolving demands on the transportation industry. As a technician I, you will be responsible for the testing and inspecting of precision electronics and electronically controlled pneumatic devices, documenting, and reporting on the tests performed, and the troubleshooting of these devices.
Electrical Test Technician 3 M.C. Dean IncElectrical Test Technician 3Beltsville, MD$42–$60 / hourResponsible for managing or training operations staff to operate (monitor and control) and update all system (s) control applications maximizing the efficiency of the system being controlled and revising the operating controls as needed to accommodate changes in the facility operations or to correct identified problems/ inefficiencies. Responsible for assisting the implementation process and procedures set forth using CMMS program to schedule, dispatch, track and report MEP field emergency repair, adjustment, preventive maintenance, and warranty activities.
Test Technician - 2nd Shift Thales Defense & Security IncTest Technician - 2nd ShiftMD$22.15–$28.30 / hourWith over 1,000 employees, TDSI and its four subsidiaries (Advanced Acoustic Concepts, Digital Receiver Technology, Tampa Microwave, and Trusted Cyber Technologies), supports U.S. Joint Services, special operations forces and multi-national partners with a variety of communication, visualization, signal intelligence/electronic warfare, and sensor/sonar capabilities. TDSI considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.
NewTest Technician Leonardo DRS IncTest TechnicianFrederick, MDThe Leonardo DRS Airborne and Intelligence Systems business is a global leader and strategic partner committed to delivering world-class, full life-cycle defense and intelligence products that protect the security of our nation and our allies. And we understand there is more to life than work, and the importance of offering flexible work schedules with our 9/80 program, competitive vacation, health/emergency leave, paid parental leave, and community service hours.
Test Technician System OneTest Technician21215, MarylandBasic operating principles of analog and digital electronics, electrical and electronic circuitry, and associated mechanical mechanisms, methods, equipment and materials used in the primary maintenance and repair of a variety of electronic and electro-mechanical systems, components and equipment. The employee occasionally is required to stand; sit; use hands to finger, handle, or feel objects, tools, or controls; reach with hands and arms; climb or balance; stoop, kneel, crouch, or crawl; and talk or hear.
RF Test Technician Mercury Systems IncRF Test TechnicianMDJob Responsibilities • Conducting manual and automated production tests on RF semiconductor components • Recording and organizing test results and communicating the status of various production efforts • Operating, troubleshooting, and maintaining electronics measurement equipment • Developing an understanding of operation and parametric behavior of RF components • Performing occasional surface mount assembly/rework with hand soldering equipment. Job Summary As an RF Test Technician, you will conduct RF measurements on semiconductor components such as amplifiers, switches, filters, mixers, multi-chip modules, and integrated microwave assemblies that operate from DC to 40 GHz.
Senior Test Technician Leonardo DRS IncSenior Test TechnicianFrederick, MDThe Leonardo DRS Airborne and Intelligence Systems business is a global leader and strategic partner committed to delivering world-class, full life-cycle defense and intelligence products that protect the security of our nation and our allies. Diagnose cause of electrical, optical or mechanical malfunction or failure of operational equipment and performs preventative and corrective maintenance.
H-60 S/R or H-1 Y/Z Avionics Technician CBA- HX-21 - Naval Test Wing Atlant V2X IncH-60 S/R or H-1 Y/Z Avionics Technician CBA- HX-21 - Naval Test Wing AtlantMDUses complex test equipment such as continuous wave and pulse generators, time domain reflectometers, multi-trace oscilloscopes, frequency counters, multi-meters and deviation meters, and specialized test equipment to perform operational checks. Performs calibration, repair and replacement of system components based on test results following blueprints, schematics, handbooks, and other technical documents.
RF Test Technician Actalent IncRF Test TechnicianMD$38.46–$52 / hourThe setting combines hands-on work in production and test areas with collaboration in office and lab spaces, using a wide range of electronic and RF test equipment such as oscilloscopes, spectrum analyzers, signal generators, and specialized test cells. The role is based in a large, approximately 200,000-square-foot facility in Sykesville, Maryland that includes office space, manufacturing and production floors, research and development laboratories, test cells, and other specialized areas.
Drive Test Technician - Northeast Region Adex CorporationDrive Test Technician - Northeast RegionBaltimore, MDDrive Testing: Operate drive test equipment (e.g., TEMS Pocket, X-CAL, QXDM) in vehicles or on foot to collect RF data across designated routes and clusters. This role supports engineering teams by collecting field data to optimize coverage, capacity, and quality of service across 5G technologies.
Test Technician 1 – Instruments Intellectt INCTest Technician 1 – InstrumentsSparks, MDInterview: In-Person Job Description We are hiring a Test Technician 1 Instruments to support instrument assembly, testing, troubleshooting, and production activities in a manufacturing environment. Required Skills Mechanical assembly experience.
NewDrive Test Technician - Northeast Region Circet USADrive Test Technician - Northeast RegionBaltimore, MD, MarylandFull timeWith nearly 50 years of industry experience, we partner with major telecom providers, cloud service providers, general contractors, data center operators, and utilities to design and deliver customized solutions that solve complex challenges. Drive Testing: Operate drive test equipment (e.g., TEMS Pocket, X-CAL, QXDM) in vehicles or on foot to collect RF data across designated routes and clusters.
Test Technician 1, Instruments TechDigitalTest Technician 1, InstrumentsSparks, MDo Maintain a safe, clean, and efficient work environment through execution of all housekeeping responsibilities including cleaning, sweeping, organizing to maintain a safe and clean work environment o Demonstrates the ability to follow established procedures according to Good Manufacturing Practices (GMP) o Must follow all Client housekeeping policies and procedures o Must follow all Client safety policies and procedures o Must be able to work overtime as required to meet Client business requirements o Performs other duties as required. Proven ability to complete tasks in support of achieving goals and improved performance Must be able to effectively manage frequent assignment changes Proficient/Working Skills: o Must be proficient in English with the ability to read, write, analyze/evaluate charts, follow simple diagrams and perform basic arithmetic o Basic proficiency with PCs (Personal Computers) and basic use of a Windows environment is required o Strong math and analytical skills.
Test Technician 1, Instruments Apidel TechnologiesTest Technician 1, InstrumentsSparks, MDContractorMust demonstrate capability provide overall support of testing for moderately complex instruments Proven leadership skills capability and ability mentor, coach, and develop other associates Proven ability and accountability results and improve performance and processes across a team, work cell, or project. Including ability initiate, implement, and ongoing support all aspects of Continuous Improvement (Lean Manufacturing) philosophies through active participation in Blitzes, Shift start up meetings, Kaizen Action Sheets, Safety, and other CI projects and initiatives.
Instrument Test and Process Technician Becton Dickinson and CoInstrument Test and Process TechnicianMD$27.90–$44.60 / hourWaters collaborates with analytical laboratories around the world to advance the release of effective, high-quality medicines, assure the safety of food and water, and drive better patient outcomes by detecting diseases earlier, managing routine infections, and combatting growing antibiotic resistance. Engineering Support - Resolve minor manufacturing assembly and test issues to support instrument and sub-assembly production; also perform testing, validations, and designs of experiments under the guidance of the department staff.
Instrument Test Technician 1 Katalyst Healthcares & Life SciencesInstrument Test Technician 1Sparks, MDIncluding ability to initiate, implement, and ongoing support all aspects of Continuous Improvement (Lean Manufacturing) philosophies through active participation in Blitzes, Shift start up meetings, Kaizen Action Sheets, Safety, and other CI projects and initiatives. Must demonstrate the understanding and support of Continuous Improvement (Lean Manufacturing) philosophies through active participation in Blitzes, Shift start up meetings, Kaizen Action Sheets and other CI projects and initiatives.
Flight Test Technician WGS SYSTEMS LLCFlight Test TechnicianHagerstown, MDWhether you are a veteran Army 15-series, an Air Force 1A8, a Navy CT or other similar MOS looking to transition your cryptologic or technical skills to flight test, you bring the focus and work ethic required for high-stakes airborne sensor testing. You are the type of professional who can manage a multi-modal sensor suite (SAR, EO/IR, EW) in high-pressure environments, possessing the common sense and technical ability to operate systems and troubleshoot hardware or software faults mid-mission.
Instrument Test Technician 1 Karwell TechnologiesInstrument Test Technician 1Sparks, NJIncluding ability to initiate, implement, and ongoing support all aspects of Continuous Improvement (Lean Manufacturing) philosophies through active participation in Blitzes, Shift start up meetings, Kaizen Action Sheets, Safety, and other CI projects and initiatives. Must demonstrate the understanding and support of Continuous Improvement (Lean Manufacturing) philosophies through active participation in Blitzes, Shift start up meetings, Kaizen Action Sheets and other CI projects and initiatives.
Industrial Test Technician Better EngineeringIndustrial Test TechnicianWhite Marsh, MD$55,000–$75,000Manufacturing company in Joppa, MD looking for people with hands-on skills in the following areas: machine testing, mechanical assembly and fabrication, welding, industrial machine wiring, and/or industrial plumbing. We are looking for people to join our testing/R&D team to test new applications/features for our automated machinery.
NewTest Engineering Technician SOSITest Engineering TechnicianAnnapolis, MDClearance Requirement: Top Secret/SCI w/ CI PolyCompany Description Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. Job Description SOSi is seeking a Test Engineering Technician with C4l and/or C5ISRT experience to support a government program in Annapolis Junction, Maryland.
RF Test Technician IV Leonardo DRS IncRF Test Technician IVGermantown, MD$33.20–$47.47 / hourSeveral factors can influence the pay scale, including but not limited to: Federal contract labor categories and contract wage rates, collective bargaining agreements, geographic location, business considerations, scope, and responsibilities of the position, local or other applicable market conditions, and internal equity. Track Key Performance Indicators: Meet production OTD deadlines Quality of finished product (Pass/fail rates) Raw material stock levels Compliance outcomes of electronics components.
Electronics Test Technician for 2nd shift Northrop Grumman CorpElectronics Test Technician for 2nd shiftMD$52,094–$125,390 / yearAssisting engineers in creating designs and/or developing circuits, processes and operations that assure proper function of product and test equipment per design specifications by working from general block diagrams, rough outlines of basic circuits, oral instructions, schematics, etc; making necessary calculations to obtain or compare data as required. Developing, constructing and testing highly complex components, assemblies, devices, circuits and systems; developing and constructing experimental and prototype devices, models and systems working from very general information; performing repairs and calibrations as necessary.