HackerOne IncSenior Security Engineer, Detection and Response HackerOne IncSenior Security Engineer, Detection and ResponseWashington DC, DCRemoteSuccess in the Senior Security Engineer role will be accomplished by delivering on the responsibilities below in alignment with the Values and Principles that define how we work at HackerOne: Design, build, and maintain detection-as-code capabilities across cloud infrastructure, SaaS applications, endpoints, and identity systems, improving coverage and signal quality through Data-Driven Decision Making. As a Senior Security Engineer, you will design and deliver detection and response capabilities that protect a modern, cloud-native environment by writing code, building AI-powered tooling, and automating workflows end-to-end.
Loyal Source Government Services LLCNewSecurity Technician III Loyal Source Government Services LLCSecurity Technician IIIWashington, DCThis senior‑level role requires deep technical expertise, leadership capability, and the ability to execute and oversee complex system installations, commissioning, and troubleshooting activities. If you have a disability or medical condition and need a reasonable accommodation to participate in this step of the hiring process, you may request an alternative method or accommodation at any time by contacting Human Resources at HRmgt@loyalsource.com.
Loyal Source Government Services LLCNewSecurity Technician II Loyal Source Government Services LLCSecurity Technician IIWashington, DCThis role requires a seasoned technician capable of leading small teams, executing complex installations, and ensuring the reliability of Access Control, Intrusion Detection, and CCTV systems. If you have a disability or medical condition and need a reasonable accommodation to participate in this step of the hiring process, you may request an alternative method or accommodation at any time by contacting Human Resources at HRmgt@loyalsource.com.
Loyal Source Government Services LLCNewSecurity Technician I Loyal Source Government Services LLCSecurity Technician IWashington, DCIf you have a disability or medical condition and need a reasonable accommodation to participate in this step of the hiring process, you may request an alternative method or accommodation at any time by contacting Human Resources at HRmgt@loyalsource.com. In this role, you will support mission‑critical operations for the Library of Congress, ensuring the reliability, safety, and performance of complex security and technology systems.
Humana IncSenior AI Security Architect Humana IncSenior AI Security ArchitectDCRemote$117,600–$161,700 / yearThe Senior Security Architect for AI works with EIP Department leaders and Humana enterprise stakeholders to identify, define, and develop security architecture requirements and secure designs for AI technology solutions across Humana''s business, information technology, and security domains. (Selected candidate will be required to live within 60 mins of one of the following metro locations OR be willing to relocate to within 12 months of hire date: Louisville KY, NYC Metro, Dallas Metro, Charlotte NC Metro, Tampa, Miami, Washington DC metro, Chicago, Boston, Atlanta, Nashville).
Absolute Electric LLCElectrician Apprentice - Residential Service Absolute Electric LLCElectrician Apprentice - Residential ServiceSterling, VA$17–$20 / hourThis is a hands-on learning role designed for someone with a strong work ethic, mechanical aptitude, and a desire to build a long-term career in the electrical trade. Absolute Electric is looking for a motivated Electrician Apprentice to assist experienced technicians on residential service jobs.
Lane Valente IndustriesElectrician Apprentice Lane Valente IndustriesElectrician ApprenticeWashingtonResponsible for assisting journeyman and apprentices by carrying material, picking up supplies, cleaning shop floor etc. We have a strong in-house group of field technicians that services top U.S. corporations and are supported by top notch managers in our offices.
IAP World ServicesHVAC Mechanic Master IAP World ServicesHVAC Mechanic MasterAnnapolis Junction, MarylandAs the HVAC Master Mechanic, you will install, service and repair environmental-control systems in residences, department stores, office buildings, and other commercial establishments, utilizing knowledge of refrigeration theory, pipefitting and structural layout, mounts compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications, fabricates, assembles and installs ductwork and chassis parts, using portable metalworking tools and welding equipment, and installs evaporator unit in chassis or in air-duct system, using hand tools. Mechanic observes pressure and vacuum gauges and adjusts controls to insure proper operation, tests joints and connections for gas leaks, using gauges or soap-and-water solution, wraps pipes in insulation batting and secures them in place with cement or wire bands, replaces defective breaker controls, thermostats, switches, fuses and electrical wiring to repair installed units, may install, repair and service air conditioners, ranging from fifteen to one hundred and fifty tons cooling capacity in warehouses and other large buildings.
Fairfax County VAIndustrial Electrician II Fairfax County VAIndustrial Electrician IIBurke, VA$56,905.26–$94,841.34 / yearKey Responsibilities: Performs a variety of tasks in the maintenance of three - phase industrial electrical equipment up to 4160 volts, including MCC, panel boards, standby generators, motors, pump controllers, HVAC equipment, switch gear, rack able breakers, VFD'S and soft starters and other electrical equipment in the Wastewater Pumping Stations. DPWES is a diverse, nationally accredited and award-winning public works agency with approximately 1,000 employees providing solid waste, capital facility development, wastewater, stormwater, urban forestry, and land acquisition management services for the most populous county in Virginia.
Sparks GroupHVAC Technician 2 Sparks GroupHVAC Technician 2Washington, DC$30–$45 / hourThis role is responsible for the maintenance, troubleshooting, and optimization of advanced HVAC and mechanical systems to ensure continuous operations, energy efficiency, and environmental stability. The ideal candidate brings strong hands-on experience with complex commercial or industrial HVAC systems, along with the ability to operate independently in high-security environments.
ABM Industries IncElectrician ABM Industries IncElectricianManassas, VAThe Electrician will assist the foreman and journeymen with the day-to-day execution of the following scope: Pulling, dressing, and labeling low-voltage controls, communication, and signal cabling (CAN bus, Ethernet/Profinet, fiber where applicable) between Muratec OHT/OHS track segments, controllers, and OCS interfaces. OSHA 10 (Construction) - current, or willingness to complete on day one - NEED TO HAVE PRIOR TO APPLYING TO JOB, Scissor lift, aerial work platform (AWP), and basic fall protection certifications - required, or willingness to complete site training before working at heights.
LB&B Associates, Inc.HVAC Mechanic LB&B Associates, Inc.HVAC MechanicSilver Spring, MDWe're searching for candidates who offer: High school diploma or equivalent (required); State of Maryland Journeyman or Master HVAC License required; completion of an accredited HVAC apprenticeship or technical school strongly preferred. Key responsibilities include: Operate, maintain, and repair all types of commercial HVAC systems, with a focus on chillers, boilers, cooling towers, air handling units, VAV boxes, split systems, and associated controls.
Sparks GroupHVAC Technician 3 Sparks GroupHVAC Technician 3Washington, DC$40–$55 / hourThe ideal candidate will possess strong technical knowledge of commercial and industrial HVAC systems, excellent troubleshooting abilities, and experience working within critical infrastructure or high-availability environments. Operate and maintain critical engineering systems including HVAC, CRAC units, boilers, chillers, VAV systems, IFUs, utility systems, and fire/life safety systems .
M.C. Dean IncHVAC Technician 2 - Washington, DC M.C. Dean IncHVAC Technician 2 - Washington, DCWashington, DC$30–$45 / hourOperate and maintain site-critical Engineering systems and equipment that supply the facility with heat, utility and conditioned water, ventilation, air conditioning and other environmental and critical systems in accordance with diagrams, operating manuals, industry best practices, and manufacturers specifications. Applicant must have a high school diploma or GED with a minimum of 4+ years of experience working with complex HVAC systems and equipment including chillers, boilers, package units, VAV systems (direct digital, pneumatic and automated control systems).
M.C. Dean IncHVAC Technician 1 - Washington Metro Area M.C. Dean IncHVAC Technician 1 - Washington Metro AreaWashington, DC$25–$35 / hourExperience working with complex HVAC systems including chillers, boilers, package units, AHUs, and VAV systems (direct digital, pneumatic, and automated controls). Clearance Requirement: Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top Secret clearance.
M.C. Dean IncHVAC Technician 3 - Washington Metro Area M.C. Dean IncHVAC Technician 3 - Washington Metro AreaWashington, DC$40–$55 / hourExperience working with complex HVAC systems including chillers, boilers, package units, AHUs, and VAV systems (direct digital, pneumatic, and automated controls). Clearance Requirement: Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top Secret clearance.
M.C. Dean IncHVAC Technician 1 - DMV M.C. Dean IncHVAC Technician 1 - DMVTysons, VA$25–$35 / hourExperience working with complex HVAC systems including chillers, boilers, package units, AHUs, and VAV systems (direct digital, pneumatic, and automated controls). Clearance Requirement: Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top Secret clearance.
M.C. Dean, IncHVAC Technician 2 - DMV M.C. Dean, IncHVAC Technician 2 - DMVTysons , Virginia$30–$45 / hourExperience working with complex HVAC systems including chillers, boilers, package units, AHUs, and VAV systems (direct digital, pneumatic, and automated controls). Clearance Requirement:Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top Secret clearance.
Hensel Phelps Construction CoElectrician I Hensel Phelps Construction CoElectrician IBethesda, MDHowever, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information. Our team provides best-in-class operational solutions with technical knowledge and subject matter experts of building systems, envelopes, campus, and client operations.
M.C. Dean IncHVAC Technician 3 - DMV M.C. Dean IncHVAC Technician 3 - DMVTysons, VA$40–$55 / hourExperience working with complex HVAC systems including chillers, boilers, package units, AHUs, and VAV systems (direct digital, pneumatic, and automated controls). Clearance Requirement: Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top Secret clearance.
M.C. Dean IncHVAC Technician 2 - Washington Metro Area M.C. Dean IncHVAC Technician 2 - Washington Metro AreaWashington, DC$30–$45 / hourExperience working with complex HVAC systems including chillers, boilers, package units, AHUs, and VAV systems (direct digital, pneumatic, and automated controls). Clearance Requirement: Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top Secret clearance.
EMCOR Government Services, Inc.Journeyman HVAC Mechanic - Part Time (DOE G) Schedule Saturday/Sunday 2:00pm - 10:00pm EMCOR Government Services, Inc.Journeyman HVAC Mechanic - Part Time (DOE G) Schedule Saturday/Sunday 2:00pm - 10:00pmGermantown, MarylandWhen military bases, national security agencies, federal buildings, healthcare facilities, and leading commercial clients in Washington D.C and across the nation need superior facility support services, we answer the call. The HVAC Mechanic will operate, monitor, troubleshoot, repair and perform routine reoccurring preventive maintenance services to base building HVAC and other related mechanical equipment.
EMCOR Government Services, Inc.Journeyman HVAC Mechanic - Part Time (DOE G) Schedule Saturday 6:00am - 2:00pm EMCOR Government Services, Inc.Journeyman HVAC Mechanic - Part Time (DOE G) Schedule Saturday 6:00am - 2:00pmGermantown, MarylandWhen military bases, national security agencies, federal buildings, healthcare facilities, and leading commercial clients in Washington D.C and across the nation need superior facility support services, we answer the call. The HVAC Mechanic will operate, monitor, troubleshoot, repair and perform routine reoccurring preventive maintenance services to base building HVAC and other related mechanical equipment.
M.C. Dean IncElectrical Apprentice Sterling Hiring Event M.C. Dean IncElectrical Apprentice Sterling Hiring EventSterling, VAAssembling, installing, testing, and maintaining electrical or electronic wiring, conduit, cable, equipment, components and devices associated with electrical equipment, following blueprints of electrical layouts and building plans. Candidates must demonstrate physical strength and stamina to perform various tasks, including but not limited to, loading, and unloading, operating equipment, and assisting in the transportation of various materials.
M.C. Dean IncElectrical Apprentice M.C. Dean IncElectrical ApprenticeWashington, DCM.C. Dean is headquartered in Tysons, Virginia, and employs more than 5,800 professionals who engineer and deploy automated, secure, and resilient power and technology systems; and deliver the management platforms essential for long-term system sustainability. Responsibilities: • Assembling, installing, testing, and maintaining electrical or electronic wiring, conduit, cable, equipment, components, and devices associated with electrical equipment, following blueprints of electrical layouts and building plans.
Jones Lang LaSalle IncNewMobile HVAC Technician Jones Lang LaSalle IncMobile HVAC TechnicianBethesda, MDIndividuals are expected to demonstrate technical expertise in HVAC and refrigeration and be multi skilled in electrical, HVAC, Piping/Plumbing, Material Handling Equipment and others in order to successfully complete daily/weekly work assignments. Maintain, operate, and repair all HVAC/R systems and associated equipment, electrical distribution equipment, plumbing systems, building interior/exterior repair, and related grounds, and production equipment as it pertains to assigned buildings.
Hensel Phelps Construction CoElectrician II Hensel Phelps Construction CoElectrician IIBethesda, MDHowever, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information. Perform mid-level mechanical operations, repair, and maintenance to building systems to include automatic transfer switches, UPS/battery storage, emergency generators, and photovoltaic systems.
M.C. Dean IncHVAC Technician 3 - Washington, DC M.C. Dean IncHVAC Technician 3 - Washington, DCWashington, DC$40–$55 / hourOperate and maintain site-critical Engineering systems and equipment that supply the facility with heat, utility and conditioned water, ventilation, air conditioning and other environmental and critical systems in accordance with diagrams, operating manuals, industry best practices, and manufacturers specifications. Applicant must have a high school diploma or GED with a minimum of 6+ years of experience working with complex HVAC systems and equipment including chillers, boilers, package units, VAV systems (direct digital, pneumatic and automated control systems).
BCES GlobalNewApprentice Electrician BCES GlobalApprentice ElectricianColumbia, MD$20–$26 / hourThis position is ideal for motivated individuals who are eager to learn the electrical trade, gain hands-on experience, and build a long-term career in commercial electrical construction while working alongside experienced electricians and foremen. BCES Global is a North American electrical contracting platform delivering safe, reliable, and high‑quality power‑system services across industrial, commercial, utility, and mission‑critical environments.
Bopat ElectricApprentice Electrician Bopat ElectricApprentice ElectricianColumbia, MD$20–$26 / hourThis position is ideal for motivated individuals who are eager to learn the electrical trade, gain hands-on experience, and build a long-term career in commercial electrical construction while working alongside experienced electricians and foremen. As part of the BCES Global Group, we combine the strength of a best‑in‑class international network with the agility and expertise of a respected local team—empowering our people to do exceptional work that keeps essential systems safe, resilient, and future‑ready.
Johns Hopkins HospitalHVAC Mechanic Johns Hopkins HospitalHVAC MechanicWashington, DCRequired Licensure, Certification, On-going Training: Successful completion of formal training in a state-approved HVACR Journeyman program at a vocational or technical school, college, or apprenticeship sponsor organization. We are committed to creating a welcoming and inclusive environment, where we embrace and celebrate our differences, where all employees feel valued, contribute to our mission of serving the community, and engage in equitable healthcare delivery and workforce practices.