NewControls Engineer Amazon Data Services, Inc.Controls EngineerHilliard, OHAWS Data Centers have multiple components such as generators, uninterruptable power sources, diesel generators, electrical switchgear, power distribution units, variable frequency drives, automatic/static transfer switches, chillers [air-cooled and water-cooled], pumps, cooling towers, heat exchangers, CRAHs, air economizers, etc. - Frequently visit (locally) assigned in-operation data centers to troubleshoot, meet customers, supervise vendor’s work to ensure compliance with the scope, design, SOO and applicable local codes.
NewData Center Controls Engineer, Data Center Capacity Delivery - Controls Amazon Data Services, Inc.Data Center Controls Engineer, Data Center Capacity Delivery - ControlsNew Albany, OHAWS Data centers have multiple components such as generators, uninterruptable power sources, diesel generators, electrical switchgear, power distribution units, variable frequency drives, automatic/static transfer switches, chillers [air-cooled and water-cooled], pumps, cooling towers, heat exchangers, CRAHs, air economizers, etc. B.S. in Electrical, Mechanical, or other related engineering degrees as well as 5+ years Controls related experience; or Associates degree and 5 years of Controls related experience; or High School diploma with 10 years of Controls related experience.
NewControls Manager Amazon Data Services, Inc.Controls ManagerDublin, OHThe candidate will possess industrial Controls System experience, project management, mechanical, electrical or technology background that enables him/her to undertake the challenges of sophisticated controls platforms and a demonstrated ability to think broadly and strategically in aligning building controls and automation with the larger objectives of the business. The Data Center Capacity Delivery team is looking for exceptional individuals to join our organization as a Controls Manager, responsible for the building management systems and electrical power monitoring system (BMS/EPMS) deployment and service within Amazon data centers.
NewControls Technician, Data Center Capacity Delivery, Amazon Data Services, Inc Amazon Data Services, Inc.Controls Technician, Data Center Capacity Delivery, Amazon Data Services, IncNew Albany, OHThese systems integrate and monitor multiple critical components, including generators, uninterruptible power sources, diesel generators, electrical switchgear, power distribution units, variable frequency drives, automatic and static transfer switches, air-cooled and water-cooled chillers, pumps, cooling towers, heat exchangers, Computer Room Air Handlers (CRAHs), and air economizers. - Associate’s degree, trade school certification, or other certified training in a related technical field with 1+ years of relevant industrial Controls or HVAC controls experience, OR 3+ years of relevant industrial or HVAC controls experience in lieu of a degree.
NewControls Technician, Data Center Capacity Delivery Amazon Data Services, Inc.Controls Technician, Data Center Capacity DeliveryTrenton, OHThe Data Center Global Services team is looking for exceptional individuals to join our Controls organization as a Controls Technician for Service & Construction of the Building Management Systems (BMS) and Electrical Power Monitoring System (EPMS) within Amazon data centers. They will verify, configure, and troubleshoot field devices including Air Handler Unit (AHU) controllers, Variable Frequency Drives (VFDs), Temperature and Pressure Sensors, and Third Party Network or Serial Devices, controllers and network equipment.
Electrical and Instrumentation Engineer Aminov Search PartnersElectrical and Instrumentation EngineerAshtabula, OH$90,000–$120,000 / yearThis pivotal position ensures the enhancement and safety of our site's electrical and instrumentation systems, with a strong emphasis on electrical reliability and troubleshooting. Join a leading global manufacturer that prides itself on fostering work-life balance, encouraging professional growth, and maintaining a cooperative work environment.
Service Engineer Pinnacle Technical ResourcesService EngineerSandusky,, OhioContractorThe specific compensation for this position will be determined by several 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. Successfully placed or hired candidates would only be asked for banking details after accepting an offer from us during our official onboarding processes as part of payroll setup.
NewI&C Engineer III System OneI&C Engineer IIIOak Harbor, OHLead the production of instrumentation engineering/design deliverables, including Instrument Index, control systems (DCS and/or PLC) and Continuous Emissions Monitoring Systems (CEMS) Data Sheets and control design deliverables, including I/O list, Process Control Narratives. Ability to independently organize and prioritize work assignments and coordinate a variety of tasks, with good attention to detail and ability to deal with conflicting priorities and deadlines.
Hardware Test Engineer LeidosHardware Test EngineerDayton, OH$87,100–$157,450May 20, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
NewSr. Construction Manager, MLZ Data Center Construction Amazon Data Services, Inc.Sr. Construction Manager, MLZ Data Center ConstructionNew Carlisle, OHWork alongside partner teams such as Operations, Networking, Controls, Security, and Commissioning to build Data Centers that directly support our Customers. We pioneered cloud computing and never stopped innovating — that’s why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses.
Electrical Controls Engineer Precision Strip, Inc.Electrical Controls EngineerMinster, OHHave prior Electrical Controls Engineering work experience or a Bachelor's degree in Electrical Engineering or related field. Strong background and competency in setting up and tuning multiple AC/DC drives, as part of our in house designed control systems.
Electrical Controls Engineer Allied Mineral Products Holding, Inc.Electrical Controls EngineerColumbus, OhioFunction as the subject matter expert in both hardware and software for engineering systems for industrial manufacturing environment, Manage plant engineering projects, from beginning to end, including defining requirements, developing designs, cost estimates, and timelines, obtaining buy in from other parties, planning and supervising installations, tracking revisions, and producing final documentation. For the manufacturing process network, lead equipment network asset management including the creation and maintenance of component inventory and documentation such as technical specifications information, network configuration, network mapping, processes, and change management.
Corporate Electrical & Controls Engineer Ice IndustriesCorporate Electrical & Controls EngineerSylvania, OhioJob Title: Corporate Electrical & Controls Engineer Location: Ice Industries HQ 3810 Herr Road Sylvania, OH 43560 General Job Function: The Corporate Electrical & Controls Engineer is responsible for supporting the design, development, and operation of electrical and mechanical systems within our production facilities. This role focuses on setting up, configuring, troubleshooting, and repairing electrical control systems , including PLCs, sensors, actuators, robotics, and related hardware, ensuring optimal performance and minimal downtime of process equipment.
Controls Engineer VenteonControls EngineerFremont, OHUpdate, modify and continuously improve existing controls systems including robotic programs, Siemens ladder logic, relay logic, electrical distribution, motor controls, multiple operator interfaces, hydraulics and pneumatics distribution control. Knowledge of manufacturing equipment and systems involving Urethane reaction injection molding, Rotational dry cast cells, Vacuum forming, Paint cells, Laser scoring, water jets, sonic and vibration welding and others.
NewInstrumentation & Controls Engineer 2 CyfleInstrumentation & Controls Engineer 2Akron, OHTwo plus (2+) or more years working in one or more of the following service areas: Chemicals, Petrochemicals, Polymers, Utility, Energy, and ManufacturingResponsibilities of the Instrumentation & Controls Engineer:The Process & Controls (I&C) Engineer II serves as Lead Engineer on project work for clients and is responsible for gathering and analyzing technical data used to furnish a design package of deliverables to fulfill scope of work requirements that include preparation of CAD drawings, generating instrument lists, I/O lists, specifications, and related design documents. About the job Instrumentation & Controls Engineer 2 We have partnered with a multi-disciplined engineering organization in the Akron, OH area to provide them with an Instrumentation & Controls Engineer.
Electrical Controls Engineer Allied Mineral Products, Inc.Electrical Controls EngineerColumbus, OHFunction as the subject matter expert in both hardware and software for engineering systems for industrial manufacturing environment, Manage plant engineering projects, from beginning to end, including defining requirements, developing designs, cost estimates, and timelines, obtaining buy in from other parties, planning and supervising installations, tracking revisions, and producing final documentation. For the manufacturing process network, lead equipment network asset management including the creation and maintenance of component inventory and documentation such as technical specifications information, network configuration, network mapping, processes, and change management.
Electrical Controls Engineer- EPLAN Focused Interstates IncElectrical Controls Engineer- EPLAN FocusedCincinnati, OH$76,800–$124,300 / yearWhether youre bending conduit, wiring panels, writing code, supporting projects, or helping things run behind the scenes, youll be part of a crew that works hard, shares laughs, and takes pride in doing quality work. As an Electrical Controls Engineer at Interstates, youll play a key role in developing and executing detailed, constructable control system designs for a diverse array of projects.
Electrical Controls Engineer AptivElectrical Controls EngineerWarren, OhioUnder the direction of the Manufacturing Engineering General Supervisor, the successful candidate will be responsible for providing on-site engineering support within the high speed metal stamping operation, primarily for machine vision. Obtain quotes, write purchase requisitions for project needs, maintain control of spending on projects for new equipment and existing equipment revisions.
NewElectrical Controls Engineer AimwelElectrical Controls EngineerYoungstown, OH$65,000–$85,000 / yearIntegrity Technical Services, Inc. 14 Whitehall Drive Suite 102 Akron, Ohio 44278 Toll Free: 1-888-262-3226 Akron: 330-633-6500 Cleveland: 440-257-3232 Website: (To view all of our open positions please visit our website) Integrity Technical Services, Inc. does not charge a fee for finding anyone a job. This role provides critical technical support for engineered products, focusing on electrical components and related systems, and is responsible for ensuring all unit control systems satisfy applicable codes and customer specifications.
Electrical Controls Engineer SEA AmericaElectrical Controls EngineerPerrysburg, OhioElectrical Controls Engineer Position Summary: Requires taking a role in the implementation and troubleshooting of electrical control systems/designs, PLC/HMI commissioning, performing equipment checks, equipment/system start-ups, data collection, and optimization of control systems. Ability to wear personal protective equipment is required (including but not limited to; steel toed shoes, gloves, safety glasses, hearing protection, clean room garments.).
NewManufacturing Controls Engineer Nesco Resource, LLCManufacturing Controls EngineerPerrysburg, OH$85,000–$125,000 / yearProficient with Rockwell Automation RSLogix 5000, Allen Bradley PLCs (Compactlogix and Controllogix), robotics, machine safeties, servos, stepper motors, motor starters, motor controllers, Cognex vision systems and electrical cabinet design. The Controls Engineer owns projects from purchase order through final installation and startup, serving as the single point of accountability for on-time, on-budget delivery.
Controls Engineer Cleaning Technologies Group, LLCControls EngineerCincinnati, OHThis role works across engineering, manufacturing, and customer teams to deliver reliable, functional, and supportable automation systems from project kickoff through startup and customer acceptance. Successful Controls Engineers are strong problem-solvers who combine technical capability with ownership and teamwork.
Automation Controls Engineer Matrix TechnologiesAutomation Controls EngineerMaumee, OH$69,000–$89,000As a member of the Automation team, this position includes assisting senior engineers with preparing the project functional specification, project test specifications, developing PLC code, developing HMI graphics, executing a software Factory Acceptance Test, and performing on-site commissioning and start-up. Intermediate Level Control & Automation Engineers work on projects in a team environment under the direction and mentorship of a more senior level Controls Engineer but are expected to already possess the skills and experience to work autonomously once given assigned tasks.
Electrical Controls Engineer Ohio Gratings, IncElectrical Controls EngineerMassillon, OHPart time3- 5 years minimum experience with writing and troubleshooting PLC/HMI software for machinery or equipment and be familiar with electrical hardware. EDUCATION, WORK EXPERIENCE, AND PROFICIENCIES : Bachelor’s Degree in Electrical/Mechanical/Mechatronic Engineering or equivalent experience.
Electrical Controls Engineer ITSElectrical Controls EngineerChagrin Falls, OH$70,000–$120,000 / yearA Cleveland, Ohio area engineering firm is recruiting an experienced Field Service Electrical Controls Engineer or Electrical Controls Technician. Deep understanding of industrial automated systems, including PLCs, HMIs, Variable Frequency Drives (VFDs), and variable speed motor controls.
Electrical Controls Engineer Applied Industrial Technologies IncElectrical Controls EngineerOHMorris Co., a subsidiary of Applied Industrial Technologies (NYSE: AIT), the world's largest fluid power distributor, is looking for an Controls Engineer who will assist our sales force with technical expertise for the design of fluid power systems and customer system integrations. Founded in 1923, Applied Industrial Technologies (NYSE: AIT) is a leading value-added distributor and technical solutions provider of industrial motion, fluid power, flow control, automation technologies, and related maintenance supplies.
1st Shift Controls Engineer Venteon1st Shift Controls EngineerFindlay, OHProvides electrical technical expertise in the trouble shooting and problem-solving process of electrical and electronic circuits to minimize plant machine downtime and scrap. If you are a high performer and would like to work for an equally high performing company and you think the above opportunity is appropriate for you, we invite you to submit your resume in Microsoft Word format to: GHubbard@Venteon.com .
Controls Engineer Palmer Manufacturing and Supply, Inc.Controls EngineerSpringfield, OH$80,000–$95,000 / yearKnown for heavy-duty, long-lasting machinery and exceptional service, Palmer offers a wide range of products, including sand mixers, thermal and mechanical sand reclamation systems, molding systems, and complete foundry layout services. Daily responsibilities include designing and troubleshooting control systems, programming PLCs, collaborating with production teams to ensure system functionality, and supporting testing and commissioning of equipment.
Entry Level Electrical Controls Engineer The Kleinfelder Group IncEntry Level Electrical Controls EngineerPerrysburg, OH$35.04–$43.27 / hourThe Entry-Level Electrical Controls Engineer is responsible for collaborating with clients and the IFM-Kleinfelder Project Team to analyze process treatment requirements to design and implement the electrical, instrumentation, and controls aspect of industrial, commercial, and municipal water and wastewater systems. Our collaborative, multidisciplinary group spanning architectural, structural, civil, electrical, mechanical, process engineering, pipeline design, and integrity management works together to deliver integrated, high‑impact solutions.
Entry-Level Electrical Controls Engineer Kleinfelder IncEntry-Level Electrical Controls EngineerPerrysburg, Ohio$35.04–$43.27 / hourFull timeThe Entry-Level Electrical Controls Engineer is responsible for collaborating with clients and the IFM-Kleinfelder Project Team to analyze process treatment requirements to design and implement the electrical, instrumentation, and controls aspect of industrial, commercial, and municipal water and wastewater systems. Our collaborative, multidisciplinary group spanning architectural, structural, civil, electrical, mechanical, process engineering, pipeline design, and integrity management works together to deliver integrated, high‑impact solutions.
NewControls Engineer II – Hybrid ControlsJobsControls Engineer II – HybridColumbus, OhioYou’ll work with industry-leading platforms— Tridium/Niagara (required) , plus Distech and Reliable— to deliver turnkey automation solutions that reduce client energy consumption and operational costs. A nationally recognized Energy Services and Smart Building Technology firm is hiring two Controls Engineers II to support its expanding BAS and energy efficiency division in Columbus, OH.
Electrical & Controls Engineer - Corporate Talent Wave Associates, LLCElectrical & Controls Engineer - CorporateToledo, OH$100,000–$110,000 / yearOur client is seeking a dedicated professional to design, develop, and optimize electrical and control systems across their production facilities. Engage in a safety-sensitive role with direct exposure to manufacturing machinery, noise, and varying temperatures.
Controls Engineer Cleaning Technologies GroupControls EngineerCincinnati, OhioJob Title: Controls Engineer Department: Engineering Reports To: Engineering Team Leader Exemption Classification: Salary, Exempt **Position is located onsite in Cincinnati** Position Summary The Controls Engineer is responsible for the design, programming, integration, and support of machine control systems for custom industrial equipment. This role works across engineering, manufacturing, and customer teams to deliver reliable, functional, and supportable automation systems from project kickoff through startup and customer acceptance.
Senior Electrical Controls Engineer APTIMSenior Electrical Controls EngineerFindlay, OH$90,000–$132,000 / yearWork includes, among other things, conceptual studies, cost and planning studies, layouts, design calculations (e.g., voltage-drop, short-circuit, protection and coordination, harmonics, lighting, etc.), CAD design, specification development, testing, programming, and drawings development. Will be responsible for working with Electrical CAD Designer to develop process ladder logic, OIT's, and configuring PLCs to meet project requirements along with control panel diagrams, wiring diagrams, and verifying proper functionality.
NewControls Engineer Hanley Energy LLCControls EngineerColumbus, OHResponsibilities System Installation, Checkout, Integration, Testing, and CommissioningAssist with planning and designing of Critical Infrastructure projectsPerform the programming and deployment of Critical Infrastructure projectsLearn new systems and products as necessaryPreventative Maintenance Visits (PMV) and PMV SupportHanley Energy Ticket SupportProCore Project ManagementDevelop and Deploy BMS ProgramsExpand and develop system integration experienceProvide feedback to the Engineering team about technical documentation, mechanical/electrical/plumbing diagrams, sequences of operation, and operating procedures. Technical training from military training, trade school, university, or college and relevant working experience equivalent to a 2-year degree in STEM plus 2 years of relevant working experience2-year degree in STEM plus 2 years of relevant working experiencePrior experience working with:Data Centers or other critical environmentsElectrical TroubleshootingMechanical and/or Electrical InstallationAbility to be the primary on call technicianMust be available during non-working hours for a week during on call rotation.
Electrical Controls Engineer Actalent IncElectrical Controls EngineerHamilton, OH$38–$48 / hourWe are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing winner for both client and talent service. Work typically involves office-based design activities using tools such as AutoCAD and AutoCAD Electrical, along with hands-on testing and troubleshooting of control systems in-house and occasionally in the field.
Sr Controls Engineer Matthews International CorpSr Controls EngineerCincinnati, OHThis position has comprehensive knowledge of equipment, business and customer requirements that drive the design of the technical solutions and participates in all phases of product development lifecycle, including the analysis, design, electrical designs, installation support, electrical installation debugging and support of other complimentary engineering staff associated with the electrical hardware engineering. Matthew Automation Solutions' portfolio - including brands Lightning Pick, Pyramid, and Compass Engineering - deliver solutions for high-performance order picking, assembly and sortation, as well as warehouse control and execution systems to maximize material flow and order fulfillment throughput.
Electrical Design, Controls Engineer, Experienced CoreTechsElectrical Design, Controls Engineer, ExperiencedGahanna, OH$85,000–$110,000 / yearThe successful candidate for this position will have, at minimum, the following skills, experience, and characteristics: Experience in PLC & HMI Programming (Allen-Bradley preferred). The Electrical Design/Controls Engineer will primarily be accountable for designing, programming, testing, and debugging custom designed automation equipment.
Senior Electrical Controls Engineer Aptim CorpSenior Electrical Controls EngineerFindlay, OH$90,000–$132,000 / yearKey Responsibilities/Accountabilities: Work includes, among other things, conceptual studies, cost and planning studies, layouts, design calculations (e.g., voltage-drop, short-circuit, protection and coordination, harmonics, lighting, etc.), CAD design, specification development, testing, programming, and drawings development. Will be responsible for working with Electrical CAD Designer to develop process ladder logic, OIT's, and configuring PLCs to meet project requirements along with control panel diagrams, wiring diagrams, and verifying proper functionality.
Controls Engineer Integrated Talent StrategiesControls EngineerPerrysburg, OHOur ability to offer a wide range of services, and the flexibility to adjust to the changing needs of our clients, has allowed us to maintain a solid reputation for 40 years. We do design build projects in the steel industry and we are currently looking for qualified controls engineers.
Sr. Electrical Controls Engineer Beyond SOFSr. Electrical Controls EngineerSpringboro, OhioThorough understanding of electrical circuit design including single and three phase applications, VFD’s, mitigating EMF influences, and implementation of robust industrial electrical components. ·Design for cost effectiveness and manufacturability with an ability to design and draft electrical schematics in AutoCAD or SolidWorks.
Controls Engineer III - Parcel NEW TREW SiteControls Engineer III - ParcelCincinnati, OhioBachelors of Science Degree (or pursuing degree) from an accredited college or university in Electrical Engineering (BSEE), Electrical Engineering Technology (BSEET), Computer Science (BSCS), Computer Engineering (BSCE), Computer Engineering Technology (BSCET) or equivalent experience . On large projects, you will work within a design team and for smaller projects you will work on your own with supervision from team leaders, project engineers, project managers and your supervisor. .
Junior Controls Engineer LAPORTEJunior Controls EngineerColumbus, OhioRemoteWe’re seeking a full-time controls engineer to join our expanding team and contribute to the design, programming, and management of automation projects in the pharmaceutical and food & beverage industries. Expect travel based on specific project needs—typically accompanying senior engineers for initial site visits (1–3 days) and commissioning trips (1–4 weeks).
Controls Engineer Allegion PlcControls EngineerCincinnati, OHAs a Controls Engineer, you will manage plant-wide machine automation, from upgrading legacy relay logic controls to optimizing advanced, fully automated Salvagnini systems and Fanuc industrial robots, overseeing full-scale installation and optimization to drive continuous improvement, safety, and efficiency across our facility. Mechanical Skills: Ability to use hand and power tools safely, interface with robotics systems technology, and operate electrical testing equipment such as multimeters, calibrators, and oscilloscopes (Required).
Controls Engineer AllegionControls EngineerCincinnati, OHAs a Controls Engineer, you will manage plant-wide machine automation, from upgrading legacy relay logic controls to optimizing advanced, fully automated Salvagnini systems and Fanuc industrial robots, overseeing full-scale installation and optimization to drive continuous improvement, safety, and efficiency across our facility. + Mechanical Skills: Ability to use hand and power tools safely, interface with robotics systems technology, and operate electrical testing equipment such as multimeters, calibrators, and oscilloscopes (Required).
Controls Engineer-A/B Sterling Engineering, Inc.Controls Engineer-A/BLewis Center, OHKey responsibilities include designing electrical control systems, programming PLCs and HMIs, configuring servo drives and motion control systems, and collaborating with mechanical engineering, manufacturing, and customers throughout the project lifecycle. Qualified candidates should have experience with PLC programming platforms such as Allen-Bradley, Siemens, or similar, along with HMI development, industrial networking, and troubleshooting automated equipment.
Controls Engineer-Siemens Sterling Engineering, Inc.Controls Engineer-SiemensLewis Center, OHKey responsibilities include designing electrical control systems, programming PLCs and HMIs, configuring servo drives and motion control systems, and collaborating with mechanical engineering, manufacturing, and customers throughout the project lifecycle. Qualified candidates should have experience with PLC programming platforms such as Allen-Bradley, Siemens, or similar, along with HMI development, industrial networking, and troubleshooting automated equipment.
Data Center Controls Engineer, Advanced Technology Innovation Google LLCData Center Controls Engineer, Advanced Technology InnovationColumbus, OHCareers Careers Skip navigation links home home Home Homework_outline work_outline Jobs Jobs noogler_hat noogler_hat Students Students google google How we work How we work handyman handyman How we hire How we hire person_outline person_outline Your career Your career help_outline Help link feedback Send feedback more_vert Help Send Feedback Sign in Careers Careers home Homework_outline Jobs expand_more noogler_hat Students expand_more google How we work expand_more handyman How we hire expand_more person_outline Your career expand_more job details arrow_back Back to jobs search Jobs search results 3815 jobs matched. arrow_back Back to jobs search Data Center Controls Engineer Advanced Technology Innovation share link Copy link email Email a friend corporate_fare Google place Reno NV USA Columbus OH USA 2 more 1 more bar_chart Mid Mid Experience driving progress solving problems and mentoring more junior team members deeper expertise and applied knowledge within relevant area.
Central Utility Controls Engineer RoviSysCentral Utility Controls EngineerAurora, Ohio$90,000–$130,000 / yearFull timeAs a Central Utility Controls Engineer, you will support the definition of, development, testing and implementation of Boiler, Chiller, Water Polishing and BOP (Balance of Plant) solutions utilizing the latest automation technologies from industry leading OEMs. (Boiler Combustion Controls, 3-Element Control, Burner Management Systems, Chiller controls and staging, Water Polishing, Combined Heat & Power, District Heating or Cooling, etc.).
Senior Controls Engineer LAPORTESenior Controls EngineerColumbus, OhioWe’re seeking a full-time controls engineer to join our expanding team and contribute to the design, programming, and management of automation projects in the pharmaceutical and food & beverage industries. Travel expectations are dependent on specific project requirements by typically require 1-3 days for an initial site visit and then a return trip to lead commissioning efforts which may take 1-4 weeks.