Railroad Safety Inspector (Track)- DIRECT HIRE- SME U.S. Department of TransportationRailroad Safety Inspector (Track)- DIRECT HIRE- SMEBaltimore, MD$102,415–$133,142 / yearThe Federal Railroad Administration (FRA) promulgates and enforces rail safety regulations; consolidates government support of rail transportation activities; administers financial assistance programs; conducts research and development in support of improved railroad safety and efficiency, and national transportation policy, including improved intercity passenger service. The Track and Structures Division is responsible for executing and administering the track and structures safety programs to ensure maximum safety in railroad operations relevants to railroad track, track configuration, track components, rail integrity, bridge and structures, and railroad workplace safety.
Inspector I Frederick County GovernmentInspector IFrederick, MD$25.55–$43.43 / hourWhile working in this position, the employee is required to constantly wear protective equipment; frequently work outdoors, walk on uneven ground, work in hot temperatures above 100 degrees and cold temperatures below 32 degrees, work in dirty, dusty and noisy environments and near machinery; occasionally work indoors; and rarely work in confined spaces, work at heights and below ground level. Educational Reimbursement Program: County employees who have successfully passed their probationary period may apply for education reimbursement for courses that can improve or develop an employees capabilities related to their current job or for a promotional opportunity within Frederick County Government.
Construction Manager Parsons CorpConstruction ManagerAnnapolis Junction, MD$103,500–$181,100 / yearWorks to devise and execute actions plans to rectify potential cost overruns or delays, or to accommodate significant changes to the scope of work; advises the client and company management of any such changes. This individual will support a wide range of planning, programming and Federal funding efforts as well as the entire lifecycle of acquisition, design, construction, commissioning, fit-up, tenant occupancy and ownership related assignments.
NewConstruction Specialist I Chesapeake Utilities CorpConstruction Specialist ISalisbury, MDWorking history of reviewing craft skills certificates (PE fusion and welder qualifications with OQ program) and witness on site testing. This Construction Specialist I oversees construction activities involving Chesapeake Utilities natural gas distribution pipeline system.
Construction Engineer Chesapeake Contracting GroupConstruction EngineerBaltimore, MD$60,000–$90,000 / yearFamiliarity with construction management and office productivity software, including MS Excel, MS Word, MS Project, Procore, or other web-based or mobile document and project management solutions. Manage information related to changes in the work, prepare an independent analysis, obtain and check estimates for the changes from subcontractor; resolve any conflicts.
Construction Loan Administrator Fulton Financial CorpConstruction Loan AdministratorHunt Valley, MD$27.79–$46.30 / hourResponsible for the administration of certain real estate secured commercial mortgage credit facilities, including but not limited to reviewing and preparing loan advances, monitoring builder lines, development loans and specialized construction loans, issuing release consideration letters or payoff quotes and collateral releases for those loans, collateral tracking, and processing loan payments. These duties include but are not limited to collecting, reviewing and analyzing loan documentation such as construction loan agreements for special terms, title insurance for advance limitations, and other documents like flood determinations and building permits to ensure that each future advance is calculated and advanced properly within each loan's structure.
Underground Construction Manager Centerline CommunicationsUnderground Construction ManagerElkton, MarylandThis role requires strong leadership, technical expertise in horizontal directional drilling (HDD) and underground construction, and the ability to manage multiple crews, subcontractors, and stakeholders across concurrent projects. We are seeking an experienced and highly organized Construction Manager to oversee multiple directional drilling and underground utility projects across New Jersey and surrounding regions.
Senior Superintendent New Construction Complete Building Services IncSenior Superintendent New ConstructionBethesda, MD$135,000–$165,000 / yearSome work, such as conducting phone calls and meetings, use of a computer or other technology, written and electronic documentation, and reviewing contracts/blueprints/budgets, may be conducted in a jobsite trailer or temporary office onsite, but these locations will often require employees to be able to navigate tight quarters with limited turnaround space and exterior stairs. This position is primarily responsible for overseeing the general construction operations on a project to include scheduling and activity sequencing, manpower forecasting and placement, managing subcontractors and specific trades, leading a project team, and collaborating with Project Management staff.
Senior Construction Manager GFT Infrastructure IncSenior Construction ManagerBaltimore, MD$225,000–$260,000 / yearEducation | Experience: What you will bring to our firm: A minimum of 20 years demonstrated experience in project management, construction management, business, or related field managing large projects. Support County safety personnel to ensuresafety compliance by implementing and monitoringhealth, safety, and environmental plans, conducting site safety audits, and coordinating withcontractors to mitigate hazards.
Superintendent New Construction Complete Building Services IncSuperintendent New ConstructionBethesda, MD$100,000–$130,000 / yearSome work, such as conducting phone calls and meetings, use of a computer or other technology, written and electronic documentation, and reviewing contracts/blueprints/budgets, may be conducted in a jobsite trailer or temporary office onsite, but these locations will often require employees to be able to navigate tight quarters with limited turnaround space and exterior stairs. Today, The Donohoe Companies, Inc. encompasses six companies: Donohoe Construction Company, Donohoe Real Estate Services, Donohoe Hospitality Services, Donohoe Development Company, Borger Residential, and Complete Building Services.
Construction Material Field Technician - Aberdeen, MD (No Experience Necessary) plus $$SIGN ON BONUS!$$ Hillis-Carnes Engineering Associates IncConstruction Material Field Technician - Aberdeen, MD (No Experience Necessary) plus $$SIGN ON BONUS!$$Aberdeen, MDJust 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!)
Superintendent- New Construction Donohoe Companies Inc., TheSuperintendent- New ConstructionBethesda, Maryland$100,000–$130,000 / yearSome work, such as conducting phone calls and meetings, use of a computer or other technology, written and electronic documentation, and reviewing contracts/blueprints/budgets, may be conducted in a jobsite trailer or temporary office onsite, but these locations will often require employees to be able to navigate tight quarters with limited turnaround space and exterior stairs. Today, The Donohoe Companies, Inc. encompasses six companies: Donohoe Construction Company, Donohoe Real Estate Services, Donohoe Hospitality Services, Donohoe Development Company, Borger Residential, and Complete Building Services.
Senior Superintendent- New Construction Donohoe Companies Inc., TheSenior Superintendent- New ConstructionBethesda, Maryland$135,000–$165,000 / yearSome work, such as conducting phone calls and meetings, use of a computer or other technology, written and electronic documentation, and reviewing contracts/blueprints/budgets, may be conducted in a jobsite trailer or temporary office onsite, but these locations will often require employees to be able to navigate tight quarters with limited turnaround space and exterior stairs. Responsibilities: This position is primarily responsible for overseeing the general construction operations on a project to include scheduling and activity sequencing, manpower forecasting and placement, managing subcontractors and specific trades, leading a project team, and collaborating with Project Management staff.
Construction Manager - Wireless MasTec IncConstruction Manager - WirelessHagerstown, Maryland$80,000–$90,000 / yearFull timeResponsibilities: As a Wireless Construction Manager , you will oversee all phases of wireless telecom construction projects, including carrier site builds, upgrades, modifications, overlays, equipment swaps, and closeout activities. You understand wireless site construction, including macro sites, rooftop sites, tower modifications, equipment upgrades, antenna/radio swaps, small cells, or carrier modernization work .
Construction Supervisor (Transmission Survey and GIS) CarianConstruction Supervisor (Transmission Survey and GIS)New Carrolton, MarylandGuided by integrity, trust, excellence, and accountability, our team helps deliver complex capital programs and build the resilient energy infrastructure that communities depend on. We partner with leading electric and gas utilities to provide strategic advisory and disciplined execution across program management, business intelligence, and field execution oversight.
Construction Manager - Transportation Whitman, Requardt and Associates LLPConstruction Manager - TransportationBaltimore, MD$20–$45 / hourDuties may include: • Walking and navigating across rough or uneven terrain such as mud, rocks, grass, dirt, steep hillsides, heavily wooded areas, and other unpaved surfaces • Moving around active project sites, which may involve climbing ladders, stairs, scaffolding, ramps, or poles • Performing physical activities such as bending, twisting, kneeling, and climbing • Remaining in a stationary position-either standing or sitting-for extended periods of time • Repetitive motions involving the wrists, hands, and/or fingers • Lifting objects weighing up to 50 pounds and/or carting objects up to 50 lbs distances up to 50 yards • Driving to and from project sites which may involve distances of up to or exceeding 75 miles round trip • Must be able to function safely in an environment with potential risks, including, but not limited to those described in this document. • Must have or be able to obtain the following: • All applicable MARTCP certificates • A current SHA Temporary Traffic Control Manager's Training Course Card (or secure the same prior to work assignment) • MDE RPC Card and SHA E&S Yellow Card • Must have a valid drivers license with a good driving record • Must have a personal vehicle for travel to and from assigned construction sites • Must be willing to work nights and overtime, when required by the project assignment • Overnight in-state travel may be required.
Construction Administration/Field Document Control Specialist Whitman, Requardt and Associates LLPConstruction Administration/Field Document Control SpecialistBaltimore, MD$30–$40 / hourWRA is currently seeking qualified Construction Administration/Document Control Specialist (Project Controls) for a major Design-Build project located in Baltimore, Maryland. The specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate's relevant knowledge, training, skills, work location, and/or experience.
NewElectrical Project Manager - Commercial Large Construction I8IS INC.Electrical Project Manager - Commercial Large ConstructionHampstead, MDThe ideal candidate will bring extensive commercial electrical construction experience, strong leadership skills, and the ability to build effective relationships with clients, inspectors, vendors, and trade partners. The organization is seeking an experienced Senior Electrical Project Manager – Commercial Large Construction to lead large-scale commercial electrical construction projects.
Superintendent I, Commercial Construction Corvias Corporate ServicesSuperintendent I, Commercial ConstructionMarylandThe Superintendent I serves as an emerging field leader—supporting subcontractor coordination, daily planning, inspections, and safety enforcement while developing independent jobsite leadership capability. Problem Solving and Decision Making - Uses critical thinking to evaluate problems, gather information, understand causes, and identify best possible solutions.
Construction Manager Lennar CorpConstruction ManagerColumbia, MDLennar is one of the nation's leading homebuilders, dedicated to making an impact and creating an extraordinary experience for their Homeowners, Communities, and Associates by building quality homes and providing exceptional customer service, giving back to the communities in which we work and live in, and fostering a culture of opportunity and growth for our Associates throughout their career. Tech-savvy with proficiency in Microsoft Office, Build Pro, Procore, and other construction management software, leveraging technology to streamline workflows, enhance project tracking, and improve overall efficiency.
Senior Electrical Project Manager – Commercial Large Construction in Hampstead, MD GD ResourcesSenior Electrical Project Manager – Commercial Large Construction in Hampstead, MDHampstead, MD$100,000–$150,000 / yearLocation: Hampstead, MD Employment Type: Full-Time Work Authorization: US Citizens or Green Card Holders only Candidate Location Requirement: Candidates from Maryland (MD) and Washington (WA) only Salary Range: $100,000 – $150,000 annually (plus commission). Our client is seeking an experienced, technically proficient Senior Electrical Project Manager to lead large-scale commercial electrical construction projects.
Construction Quality Manager M&J EngineeringConstruction Quality ManagerRockville, Maryland$110,000–$125,000 / yearWe specialize in providing full-service construction management, CE&I and design services for a full spectrum of industries encompassing construction projects for heavy highway roadway, bridge, railroad, tunnel, airport, seaport and marine, commercial and institutional building facilities, ITS, mechanical, electrical, environmental, water, sewer, utility, as well as design-build services for both new infrastructure and renovation projects. Since its inception in 2004, M&J has steadily evolved its business and built a diverse and dedicated employee force of over 300, fostered by a culture that serves to attract, retain, and develop a workforce that is inclusive and representative of the communities that we serve.
Construction Manager (Solar EPC) - Maryland Sun TribeConstruction Manager (Solar EPC) - MarylandBaltimore, MD$90,000–$150,000 / yearThis position reports directly to the Regional Director, Construction Management, and works closely with other key staff including project management, project engineering, quality, EHS, clients, and subcontractors. Offers of employment are contingent upon successful completion of a background check, drug screening, and employment eligibility verification through E-Verify .Read more about our company values and about Sun Tribe EPC at https://suntribesolar.com/epc .
Construction Manager - Wireless MasTec Communications GroupConstruction Manager - WirelessHagerstown, Maryland$80,000–$90,000 / yearFull timeResponsibilities: As a Wireless Construction Manager , you will oversee all phases of wireless telecom construction projects, including carrier site builds, upgrades, modifications, overlays, equipment swaps, and closeout activities. You understand wireless site construction, including macro sites, rooftop sites, tower modifications, equipment upgrades, antenna/radio swaps, small cells, or carrier modernization work .
Superintendent I, Commercial Construction Corvias Corporate Services, LLCSuperintendent I, Commercial ConstructionGlen Burnie, MD$75,000–$95,000 / yearThe Superintendent I serves as an emerging field leader—supporting subcontractor coordination, daily planning, inspections, and safety enforcement while developing independent jobsite leadership capability. Problem Solving and Decision Making - Uses critical thinking to evaluate problems, gather information, understand causes, and identify best possible solutions.
Senior Construction Manager GFT.Senior Construction ManagerBaltimore, Maryland$225,000–$260,000 / yearFull timeWhat you will bring to our firm: A minimum of 20 years demonstrated experience in project management, construction management, business, or related field managing large projects. Support County safety personnel to ensuresafety compliance by implementing and monitoringhealth, safety, and environmental plans, conducting site safety audits, and coordinating withcontractors to mitigate hazards.
NewLead Superintendent - Multifamily Construction - Harford County Michael Page InternationalLead Superintendent - Multifamily Construction - Harford CountyBel Air, Maryland$120,000–$145,000 / yearFull timeLead Superintendent - Multifamily Construction - Harford CountyThe Lead Superintendent - Multifamily Construction - Harford County will be responsible for managing all on-site construction activities for multifamily projects from groundbreaking through turnover. The Lead Superintendent - Multifamily Construction - Harford County will have 10+ years of construction experience with at least 5 years in a Superintendent or Lead Superintendent role.
Construction Materials Field Technician JOHN D HYNES & ASSOCIATES INCConstruction Materials Field TechnicianSALISBURY, MDFull timeWe are looking for a person with strong initiative and good math skills, who will perform routine to complex inspections and testing of construction materials in the field. As a Construction Materials Field Technician: Hynes & Associates is seeking technicians to perform construction field inspections and testing.
Construction Asst Testing Manager JOHN D HYNES & ASSOCIATES INCConstruction Asst Testing ManagerSALISBURY, MDFull timeThe person will perform field inspections and office duties including but not limited to supervision of employees, report writing, training, field inspections, and scheduling. The construction materials testing technician will interact daily with owner and contractor teams to inspect active construction projects and assist the testing manger with department operations.
Mechanical Inspector Parsons CorpMechanical InspectorLinthicum, MD$35.96–$62.93 / hourWe take special pride in projects and solutions that improve communities as well as people's quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Key Responsibilities: Perform daily field inspections of MEP and HVAC installations to ensure compliance with approved drawings, specifications, and applicable codes.
Mechanical Inspector Parsons Commercial Technology Group Inc.Mechanical InspectorLinthicum Heights, MD$35.96–$62.93 / hourWe take special pride in projects and solutions that improve communities as well as people's quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Key Responsibilities: Perform daily field inspections of MEP and HVAC installations to ensure compliance with approved drawings, specifications, and applicable codes.
Construction Manager AECOMConstruction ManagerBaltimore, MDThe Construction Manager (CM) will serve as the onsite Owner's Representative, working 60% in the program office and 40% at construction sites and will be accountable for overall project success, with emphasis on technical performance, field oversight, safety, quality, and coordination across contractors, design teams, and program leadership. We invite you to bring your bold ideas and big dreams and become part of a global team of over 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.
Learning & Development Specialist Macpower Digital Assets Edge Private LimitedLearning & Development SpecialistLaurel, MD$30–$38 / hourAccesses the portfolio of development solutions to ensure the appropriate applications are deployed, including, but not limited to classroom, e-learning, and guided learning; Works with WSSC Water business teams' subject matter experts to define learning and skill needs that support Utility Services processes that integrate with and relate to the other team's business processes. POSITION SUMMARY: Hiring Manager is looking for someone to provide training to Pipeline Construction Division staff and draft Systems Construction Inspector, Technical Contracts Supervisors, Administrative Contract Manager, Project Manager, and Construction Management Section Manager manuals.
Office Engineer WSP Global IncOffice EngineerColumbia, MD$72,800–$93,600 / yearWSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.
Office Engineer (Cecil County) WSP Global IncOffice Engineer (Cecil County)Columbia, MD$79,300–$99,100 / yearWSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.
Maintenance & Reliability Lead WR GraceMaintenance & Reliability LeadBaltimore, MD$140,535.20–$193,235.90 / yearWe provide innovative products, technologies and services which our customers use to manufacture everyday products like renewable fuels, pharmaceuticals, toothpaste, cosmetics, food packaging, beer, edible oils and more. Your focus will be transforming reactive maintenance into proactive asset care, maximizing equipment uptime, and building sustainable reliability solutions in a high-capacity manufacturing environment.
Maintenance & Reliability Lead W. R. Grace & CoMaintenance & Reliability LeadBaltimore, MD$140,535.20–$193,235.90 / yearWe provide innovative products, technologies and services which our customers use to manufacture everyday products like renewable fuels, pharmaceuticals, toothpaste, cosmetics, food packaging, beer, edible oils and more. Your focus will be transforming reactive maintenance into proactive asset care, maximizing equipment uptime, and building sustainable reliability solutions in a high-capacity manufacturing environment.
Facility Manager Ethos Veterinary HealthFacility ManagerBowie, MDFull timeProfessional Expectations and Workplace Culture Weekend Availability - Be available to work weekends as needed to support hospital operations and ensure leadership continuity. Primarily week-days, with the willingness and ability to respond to emergency phone calls, texts, or vendors after hours and on weekends/holidays when needed.
ENVIRONMENTAL COMPLIANCE SPECIALIST III (Hazardous Materials Compliance Specialist) State of MarylandENVIRONMENTAL COMPLIANCE SPECIALIST III (Hazardous Materials Compliance Specialist)Baltimore City, MDCandidates may substitute the possession of a Bachelor''s degree from an accredited college or university in earth science, environmental science, geology, civil or environmental engineering, biology, chemistry, agronomy, forestry or other related discipline and two years of experience performing environmental regulatory compliance work in more than one of the following areas: water pollution control; sediment and erosion control; tidal and non-tidal wetlands; flood control and waterway construction; storm water management; coal, non-coal and surface mining; air quality and air management control; solid waste management; hazardous waste control; and oil pollution control for the required experience. Experience: Six years of experience performing environmental regulatory compliance work in the areas of water pollution control; sediment and erosion control; tidal and non-tidal wetlands; flood control and waterway construction; storm water management; coal, non-coal and surface mining; air quality and air management control; solid waste management; hazardous waste control; and oil pollution control.
Senior Inside Sales Representative (REMOTE) Revvity IncSenior Inside Sales Representative (REMOTE)SDRemote$60,000–$70,000 / yearThe value and benefits of stem cells found in umbilical cord blood are clear; cord blood collection saves lives today and medical researchers are exploring new uses for umbilical cord blood stem cells for tomorrow, including diabetes, heart disease, and stroke. The base pay actually offered to the successful candidate will take into account internal equity, work location, and additional factors, including job-related skills, experience, and relevant education or training.
Alliance Service Representative I Border States Industries, Inc.Alliance Service Representative IRapid City, SDThis role receives and enters orders, provides consistent and timely follow-up on customer inquiries, coordinates and expedites deliveries, processes returns, runs daily reports and resolves customer and order issues. The Alliance Service Representative I supports the day-to-day operations of the Customer Service team in obtaining and processing orders and providing a high level of service to our Alliance customers.
Business Development Representative EBSCO Information ServicesBusiness Development RepresentativePierre, SDRemote$56,335–$80,475 / yearJoin the EBSCO talent community to receive updates on new opportunities that align with your skills and interests - register using the links below: Experienced Talent Community (https://talent.ebsco.com/exp/talentcommunity/form). EBSCO Information Services (EBSCO) delivers a fully optimized research experience, seamlessly integrated with a powerful discovery platform to support the information needs and maximize the research experience of our end-users.
NewGrowth Sales Representative - Remote Stratford DavisGrowth Sales Representative - RemoteSioux Falls, SDRemoteYou get complete day-to-day freedom and uncapped income potential, paired with direct 1-on-1 mentorship, clear onboarding, and a team environment designed for beginners. As a Growth Sales Representative, you’ll reach out to potential clients, learn about their financial goals, and deliver customized advice that guides them forward.
NewDigital Sales Representative - Remote Stratford DavisDigital Sales Representative - RemoteSioux Falls, SDRemoteThis position affords full schedule control and unlimited earning capacity, backed by organized onboarding, direct mentorship, and a solid infrastructure designed to help entry-level reps thrive. If you are a motivated individual seeking total control over your earning power in a modern remote environment, submit your resume today along with a quick note on why you'd be a great fit.
Full-Time Customer Service Representative Ruff Land Performance KennelsFull-Time Customer Service RepresentativeTea, SD$17–$19 / hourThis role is responsible for processing orders, addressing customer inquiries, coordinating with production and shipping teams, resolving issues, and ensuring a positive customer experience. The Customer Care Representative serves as the primary point of contact for customers, providing exceptional service and support throughout the order lifecycle.
Customer Service Representative Comfort Heroes Plumbing, Heating & AirCustomer Service RepresentativeSioux Falls, SD$12–$19 / hourWe’re looking for a motivated and friendly Customer Service Representative (CSR) to join our team and ensure our customers receive top-notch service, while also enjoying excellent perks and benefits to support your career and personal life. The Comfort Heroes is a premier provider of HVAC, plumbing, and electrical services, known for our dedication to high-quality workmanship and exceptional customer service.
Customer Support Representative, Call Center Walmart IncCustomer Support Representative, Call CenterDakota Dunes, SD$16–$28 / hourVIZIO is looking for an energetic Technical Support Representative to provide courteous and professional customer support for a world-class company in the consumer electronics industry. Your day-to-day responsibilities will include tracking calls and troubleshooting steps using tools such as Excel and Salesforce to maintain accurate and organized records.
Admissions Representative Mitchell Technical CollegeAdmissions RepresentativeMitchell, SDThis report includes institutional policies concerning campus safety and security (such as policies regarding alcohol and drug use, crime prevention, sexual assault prevention and response, and emergency procedures), as well as crime statistics for the previous three years concerning reported crimes that occurred on campus or on property adjacent to the campus. Annual Security & Fire Safety Report (Clery Act Disclosure) - In compliance with the Jeanne Clery Disclosure of Campus Security Policy and Campus Crime Statistics Act, Mitchell Technical College makes its Annual Security and Fire Safety Report available to all prospective employees and students.
Program Service Representative Wurth Industry USAProgram Service RepresentativeYankton, SDThe Vendor-Managed Inventory [Program Service] Representative job involves setting, delivering, stocking our product and maintaining the overall program presentation at customer facilities. Ability to establish, build and maintain positive relationships with customers, respond promptly to customer needs, solicit customer feedback, and manage difficult customer situations.
Guest Service Representative 3p-11p Sanford Medical CenterGuest Service Representative 3p-11pSioux Falls, South DakotaAbility to speak other languages in a multicultural work environment can be extremely helpful in facilitating good communication among all hotel team members and guests. Possess proficient computer skills including proficient knowledge of MS Office products, knowledge of brand operating systems preferred.