266 Results for

Online Security Jobs in Greenbelt, MD

Jobs

New!

Sterling, VAToday

$23–$23

This role emphasizes strong customer service, access control, loss prevention, incident response, observation, and reporting for safety and security incidents. The Screening Officer maintains security and safety of people and property at the site, identifying and escalating issues according to policies and procedures.

New!

Alexandria, VAToday

$22–$22

The Armed Security Officer position helps maintain a safe and secure environment for our clients by actively monitoring the premises, including patrolling a variety of locations. Frequently our Armed Security Officers will provide customer service and information to a client’s employees and customers and serve as a physical deterrent.

New!

Vienna, VAToday

$21–$21

If your schedule and availability are flexible, and you have retail, food service or hospitality industry background you are a great fit for this role; if not, we will provide you with the training and everything you need for a great introduction to a career in the security industry. The Multi-Site Security Officer position you will be monitoring and patrolling different client sites on a variety of schedules.

New!

Fairfax, VAToday

$17–$22

About Securitas USA: With over 640 local branch managers and approximately 86,000 security officers, Securitas provides unmatched security solutions to meet the specific needs of thousands of businesses. Our service offerings include specialized guarding, mobile guarding, remote guarding, and corporate risk management.

New!

Chantilly, VAToday

$18–$20

Security Officers/Security Guards observes and reports activities and incidents at an assigned client site, providing for the security and safety of client property and personnel. The Security Officer position helps maintain a safe and secure environment for our clients by actively monitoring the premises, including patrolling a variety of locations.

New!

McLean, VAToday

$21–$21

New!

Fairfax, VAToday

$15.93–$20

Observes and reports incidents or suspicious activities to client representatives, company management, or public safety authorities as appropriate. Observes and reports activities and incidents at an assigned client site, ensuring the security and safety of client property and personnel.

McLean, VA30+ days ago

$70–$75 Per Hour
Contractor

Working knowledge of networking, (routing, DNS, common ports, protocols, and firewalls) Needs to be organized and have the capability to multitask by working multiple problems, tasks and still seeing tasks through to closure working with all type of endpoint technologies. Familiar with industry security regulations and frameworks (MITRE Attack Framework, NIST, CIS CSC, etc.) General understanding of key IT components – Secure LDAP, Networking, firewall, load balancing, Federated Identity.

Washington, DC30+ days ago

Full-time

Ancillary benefits including Basic Life and Accidental Death and Dismemberment (AD&D) Insurance, Voluntary Life and AD&D Insurance, Short-Term Disability Insurance, Long-Term Disability Insurance, Voluntary Accident Insurance, Voluntary Critical Illness Insurance, and Voluntary Hospital Indemnity Insurance. Founded over ten years ago by a Delta Force Sergeant Major and an Army Special Forces Colonel, we are a values-based organization focusing on a camaraderie, service, and excellence culture.

New!

Baltimore, Maryland5 days ago

Position Summary: As a Security Officer, your duties encompass conducting unarmed patrols both indoors and outdoors, managing access points, supervising CCTV and alarm systems, preparing reports, discouraging criminal behavior, and fulfilling other responsibilities as outlined in directives. While performing the duties of this job, the employee must be able to sit, stand, and walk for variable amounts of time throughout an assigned shift; use hands to finger, handle or feel objects, tools or controls; reach with hands and arms; climb stairs; occasionally stoop, kneel, or crouch.

Washington, Washington, DC30+ days ago

Fairfax, Virginia26 days ago

At least 18 years of age; U.S. citizen or legal resident; Possess a high-school diploma, GED, or equivalent; Successful completion of a thorough background check and fingerprinting; No felony convictions or convictions of misdemeanors involving crimes of moral turpitude or gross misconduct; Valid driver's license: must currently possess an appropriate, active, valid motor vehicle operator's license that meets all of GMU's requirements for operating state vehicles and equipment under Mason's Vehicle Use Policy 1411 https://universitypolicy.gmu.edu/policies/vehicle-use/. Responsible for providing security services on campus properties 24 hours a day, responsibilities of Security Officers include: Monitoring University owned or controlled buildings, areas, and property; Performing building lock-downs, unlocks, fire watches, and safety escorts; Ensuring academic offices, labs, and sensitive areas are kept secure; Observing and reporting suspicious activity, including writing incident reports when necessary; and.

Fairfax, Virginia20 days ago

Post-quantum cryptography and quantum-secure systems engineering; Secure and trustworthy AI/ML systems; Quantum communications and quantum network security; Hardware trust, supply-chain assurance, and secure heterogeneous computing (including post-quantum/quantum accelerators); Resilient cyber-physical systems and critical infrastructure in the AI/quantum era; Quantum-cyber threat modeling and adversarial vulnerability in quantum/cryptographic systems; Next-generation wireless/edge/IoT security (5G/6G/AI/quantum integration); Cybersecurity for emerging computing paradigms (neuromorphic, bio-cyber systems, quantum/hybrid computing); Preference will also be given to candidates whose work complements and amplifies the CYSE Department's existing strengths in wireless/5G security, digital forensics, AI, and cyber-physical systems; and. Applicants must have received a PhD in Cyber Security, Engineering, Computer Science or a related field by the start date of the position; Should have demonstrated potential for excellence and productivity in research, academic service, and a commitment to high-quality teaching; Qualified candidates should demonstrate excellence in research (track record or strong potential) and teaching; Committed to interdisciplinary collaboration (across hardware, communications, control systems, AI, quantum technologies); and.

Washington, DC30+ days ago

Ocean Bay, a subsidiary of Three Saints Bay, LLC, and a Federal Government Contractor industry leader, is seeking a Lead Security Support Specialist in Washington, D.C. Position Requirements: Apply online at:https://phg.tbe.taleo.net/phg01/ats/careers/v2/viewRequisition?org=GATEWAYVENT&cws=46&rid=5412.

Owings Mills, MD30+ days ago

Full-time

As a premier global asset management organization with more than 85 years of experience, we provide investment solutions and a broad range of equity, fixed income, and multi-asset capabilities to individuals, advisors, institutions, and retirement plan sponsors. This role is ideal for a security engineer who combines strong technical depth with sound judgment, operational discipline, and the ability to translate business and regulatory requirements into effective, scalable controls.

New!

Gaithersburg, MD6 days ago

One of the most-trusted Integrated Security providers in the DMV is experiencing strong growth in the DC market in 2026 and has an opening for a Senior Service Technician to lead execution on new and existing work! This organization has been providing elite solutions for its customers for over 30 years, and believes the strength lies with its people!

Tysons , Virginia30+ days ago

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Candidates must have proven expertise to effectively manage large projects, to include: construction methods, engineering, resources, estimating, equipment, materials, contract administration, subcontract management, claim negotiations, project controls, finance, and staffing efficiency resources.

District of Columbia, Washington, DC30+ days ago

$104,240–$156,360 Per Year

As part of the SES Strategic Business Unit, you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services to include intrusion detection, access control, biometric authentication, video surveillance, audio visual, IT systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Research, prototype, and develop emerging technologies by working closely with industry partners and OEMs to implement the latest and best-in-bread capabilities to meet the customers’ emerging needs.

Herndon , Virginia30+ days ago

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Data Center Security Installation Program Manager is responsible for assisting with the overall administration, organization, and implementation of large data center electronic security installation projects.

Tysons , Virginia30+ days ago

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission-critical facilities, secure environments, complex infrastructure, and global enterprises.

Tysons , Virginia30+ days ago

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Develop budgets for projects; assist in the preparation of technical proposals, to include assisting in the design and writing of the scope of work, management plans, work sequence, safety, quality control and commissioning.

Tysons , Virginia11 days ago

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Responsibilities: A Data Center Security Installation Project Manager is responsible for assisting with the overall administration, organization, and implementation of large data center electronic security installation projects.

Baltimore , Maryland30+ days ago

$75,520–$113,280 Per Year

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission-critical facilities, secure environments, complex infrastructure, and global enterprises.

Tysons , Virginia11 days ago

As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Develop budgets for projects; assist in the preparation of technical proposals, to include assisting in the design and writing of the scope of work, management plans, work sequence, safety, quality control and commissioning.

Chantilly, VA30+ days ago

Performs network traffic analysis utilizing raw packet data, net flow, IDS, and custom sensor output as it pertains to the cyber security of communications networks. LT Consulting is seeking an Information Security (INFOSEC) Engineer responsible for maintaining the integrity and security of enterprise-wide cyber systems and networks.

Washington, DC, Washington, DC14 days ago

Process daily requirements in eMASS to include POA&Ms, IAVAs, Control Test Results (Control Correlation Identifiers [CCIs]), Categorization forms, PPSMs, SAPs, SLCMs and Inheritance updates. Experience with DoD processes and procedures, U.S. Navy surface ship systems, AWS/ Azure Government cloud implementation, IATO/ATO testing, documentation preferred.

Mclean, VA18 days ago

Officers must be warm and approachable while staying vigilant—greeting and acknowledging visitors, customers, top clients, and executives, maintaining eye contact, and staying aware of all entrances and surroundings. The Site Supervisor provides operational support for the account to include scheduling, payroll, compliance, post order development, performance metrics tracking, training, employee recognition and inspections.

Annapolis Junction, MD30+ days ago

Full-time

Bachelor’s degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university is required and (10 - 14) years experience as an ISSE / ISSO on programs and contracts of similar scope, type, and complexity within the Federal Government is required. If you are looking to join a company that provides amazing benefits, a healthy work-life balance, competitive salaries, and talented subject matter experts, consider joining our team!

Baltimore, Maryland13 days ago

Although this role is primarily Welcome- and Security-focused, the analyst will collaborate closely with the broader Patient Experience team and may contribute to initiatives, cross-coverage, and optimization efforts across all Epic patient-facing applications including MyChart, Cheers, Hello World, and Cadence. This role focuses on optimizing end‑to‑end digital patient journeys through system configuration, integrations, and workflow automation, delivering an improved user experience and measurable efficiency gains that support modern, patient‑centered healthcare delivery.

Mclean, VA24 days ago

Officers must be warm and approachable while staying vigilant—greeting and acknowledging visitors, customers, top clients, and executives, maintaining eye contact, and staying aware of all entrances and surroundings. As a Security Officer – Tactical, physical ability is essential as you will be moving around your entire shift, patrolling environments such as retail stores, airports, detention centers, etc.

Bethesda, MD30+ days ago

Officers must be warm and approachable while staying vigilant—greeting and acknowledging visitors, customers, top clients, and executives, maintaining eye contact, and staying aware of all entrances and surroundings. As a Security Officer – Tactical, physical ability is essential as you will be moving around your entire shift, patrolling environments such as retail stores, airports, detention centers, etc.

Manassas, Virginia28 days ago

Overview: Force Security Solutions a subsidiary of Konica Minolta Business Solutions, provides the highest level of Electronic Security including Intrusion Detection, Access Control and IP Video Surveillance technology. • Conduct security assessments and audits for clients to identify vulnerabilities, risks, and security need...

Reston, VA10 days ago

Strong understanding of network technologies, protocols, systems and equipment to include one or more of the following: SONET/SDH, OTN, MSAN, MSPP, MPLS/IP-MPLS, VoIP, IP Multimedia Services (IMS), DWDM, ROADM, Software Defined Networks (SDN) WAN and LAN, multi fabric networks, mesh networks, Session Border Controllers, fabric management, radio access network, front haul, back haul, BGP, OSPF, ISIS, SIP, 5G/LT/LAN interworking, VoLTE, SRVCC, DRVCC, ETSI MANO, OSS/BSS. Duties: This Network Analyst performs the following core functions: Coordinate with the customer's other multidisciplinary teams to provide timely and accurate network analysis regarding the logical and physical routes of key telecommunications networks within a designated area.

Bethesda, Maryland10 days ago

Washington, Washington, DC12 days ago

Washington, Washington, DC30+ days ago

$120,000–$155,000 Per Year

Technology moving at the speed of thought” embodies these principles – the need to nimbly utilize the best that information technology offers to meet the business needs of our Federal Government customers. Additional Job Information: TekSynap is a fast growing high-tech company that understands both the pace of technology today and the need to have a comprehensive well planned information management environment.

Fort Belvoir, Virginia20 days ago

Remote

Vienna, VA30+ days ago

$110,000–$140,000 Per Year

This may include drafting funding memos (allocations, allotments, apportionments, reclassifications, congressional notifications, etc.), tracking obligation and expenditure data, providing data for briefings and Congressional reports, drafting documents to obligate funds, coordinating within PM and U.S. Department of State regional bureaus and the Department of War, and other regional or functional bureaus as needed on the obligation, expenditure and management of account programs, and other documents necessary to the effective management of their portfolio. Coordinators shall be responsible for reviewing and coordinating various funding case development documents (LOR, LOA, etc.), tracking security assistance expenditure data, providing data for congressional briefs and reports, coordinating within PM, other State bureaus, and the Department of War) on the obligation, expenditure and management of the security assistance programs, and other documents necessary to the effective management of the security assistance accounts.

Vienna, VA30+ days ago

$57,750–$73,500 Per Year

Vienna, VA30+ days ago

$110,000–$128,000 Per Year

Regular hours for the positions will be the regular hours for the Washington, DC metropolitan area, 8:15 am – 5:00 pm EST; however, positions may be permitted to work alternative work schedules (AWS) as needed and approved, while adhering to the PM Bureau’s core hours, currently 10:00 am to 3:00 pm, and in-person requirements for PM/SA. IBTCI specializes in monitoring, evaluation, research, and learning (MERL) and institutional support across many areas and sectors including, but not limited to, conflict and crisis, democracy and governance, agriculture, economic growth, food security, education, environment, and global health.

Woodbridge, VA30+ days ago

Conducting security assessments and notifying customers via reports of all necessary lighting issues, non-operable lights, trash that is not disposed of properly, and any other potential areas that could be a breach in security (no fence, damaged fence, overgrown trees or bushes to hide in, etc.). Conducting foot patrols of courtyards, management offices, pools, and/or other corridors to ensure that the property is secure and to report any illegal or inappropriate activity, as well as take preventive actions to protect the property and the residents.

Woodbridge, VA30+ days ago

Conducting security assessments and notifying customers via reports of all necessary lighting issues, non-operable lights, trash that is not disposed of properly, and any other potential areas that could be a breach in security (no fence, damaged fence, overgrown trees or bushes to hide in, etc). Conducting foot patrols of courtyards, management offices, pools, and/or other corridors to ensure that the property is secure and to report any illegal or inappropriate activity, as well as take preventive actions to protect the property and the residents.

Centreville, VA30+ days ago

Conducting security assessments and notifying customers via reports of all necessary lighting issues, non-operational lights, trash that is not disposed of properly, and any other potential areas that could be a breach in security (no fence, damaged fence, overgrown trees or bushes to hide in, etc.). Conducting foot patrols of walking areas in/around courtyards, offices, store fronts, and/or other buildings to ensure that the property is secure and to report any illegal or inappropriate activity, as well as take preventive actions to protect the property and the residents.

Alexandria, VA30+ days ago

Conducting security assessments and notifying customers via reports of all necessary lighting issues, non-operable lights, trash that is not disposed of properly, and any other potential areas that could be a breach in security (no fence, damaged fence, overgrown trees or bushes to hide in, etc). Conducting foot patrols of courtyards, management offices, pools, and/or other corridors to ensure that the property is secure and to report any illegal or inappropriate activity, as well as take preventive actions to protect the property and the residents.

Sterling, Virginia13 days ago

Join Allied Universal at a leading tech location as an unarmed officer, where you will monitor and patrol assigned areas, complete routine rounds, and support access activity across the site. Conduct regular and random patrols throughout buildings, exterior grounds, parking areas, and perimeter locations to help to deter unauthorized activity and/or identify unusual conditions.

New!

Manassas, Virginia5 days ago

Join Allied Universal as an Unarmed Patrol Officer at a dynamic tech and telecommunications location, where you will monitor and patrol assigned areas, remain visible to help to deter security-related incidents, and support a welcoming environment through strong communication and customer service. Provide customer service to employees, visitors, and/or contractors by carrying out security-related procedures, site-specific policies, and when appropriate, emergency response activities at a technology-focused location.

New!

Fort Washington, Maryland6 days ago

Join Allied Universal as an Unarmed Patrol Officer in a commercial real estate location, where you will conduct routine patrols, remain visible to help deter security-related incidents, and support a welcoming environment through strong customer service and communication. Provide customer service to tenants, visitors, and/or staff by carrying out security-related procedures, site-specific policies, and when appropriate, emergency response activities at a commercial real estate location.

Nottingham, Maryland14 days ago

Join Allied Universal as an unarmed patrol officer at a commercial real estate location, where you will conduct routine patrols, maintain a visible presence to help discourage security-related incidents, and support a welcoming environment through strong customer service and communication. Conduct regular and random patrols throughout the property, including common areas, entrances, parking areas, and perimeter locations, helping to identify unusual activity and/or maintenance concerns.

New!

Nottingham, Maryland6 days ago

As an Unarmed Patrol Officer in a commercial real estate location, you will monitor and patrol assigned areas, complete routine vehicle and foot patrols, and remain visible to help deter security-related incidents. Support daily operations at a commercial real estate location by observing conditions, reporting maintenance or life-threatening concerns, and communicating professionally with tenants, visitors, and/or emergency personnel as needed.

Vienna, Virginia20 days ago

As a Security Officer Enhanced Part Time Patrol Shift in Vienna, VA, this role is designed to provide reliable, consistent hours at an assigned site with the flexibility for you to earn more by picking-up additional shifts when it works for you. Earn More, Claim-A-Shift Program: In addition to your fixed shift, you may pick-up extra shifts through our scheduling platform, allowing you to increase earnings and gain experience across multiple sites.

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Online Security Jobs in Greenbelt, MD

Screening Security Officers Securitas

Multi‑Site Armed Security Officer Securitas

Multi-Site Security Officer Securitas

Open Interviews for Entry Level Security Officers - Offers on the Spot! Securitas

Security Officer (M) Securitas

Corporate Security Officer (FM) Securitas

Security Officer (DFL) Securitas

Security Engineer Specialist Pyramid, Inc

Residential Security Agent Global Guardian

DMAC - Commercial Security Officer (Unarmed) Tarian

Director of Safety and Security (Job ID: 2026-3848) The Brookings Institution

Security Officer George Mason University

Open-Rank, Tenured/Tenure-Track Cyber Security Engineering Faculty George Mason University

Lead Security Support Specialist (5412) Three Saints Bay

Senior Data Security Engineer T. Rowe Price

Electronic Security Service Technician WilsonHCG

Principal Data Center Security Installation Program Manager (Project Leader 3) - Tysons, VA M.C. Dean, Inc

Security Systems Engineer 3 - Washington, DC M.C. Dean, Inc

Senior Data Center Security Installation Program Manager (Project Leader 2) - Herndon, VA M.C. Dean, Inc

PCD/TOC Security Systems Application Specialist (System Administrator 1)- Tysons, VA M.C. Dean, Inc

Lead Estimator for Data Center Security Installation - Tysons, VA M.C. Dean, Inc

Data Center Security Installation Project Manager (Project Leader 1) - Tysons, VA M.C. Dean, Inc

PCD/TOC Security Systems Application Specialist (System Administrator 1)- Baltimore, MD M.C. Dean, Inc

Estimator for Data Center Security Installation Work (Estimator 2)- Tysons, VA M.C. Dean, Inc

Information Security Engineer LT Consulting

Cyber Security Analyst R&P Technologies, LLC

Security Site Supervisor Gardaworld

Information Systems Security Engineer Peterson Technologies

SYSTEMS ANALYST I - CERT (Certified in Epic Welcome or Security) Mercy Medical Center

Armed Security Officer- Flex Gardaworld

Maryland Armed Security Officer Whelan Security

Security Sales Consultant Konica Minolta Business Solutions, U.S.A., Inc.

Network Analyst - Active Security Clearance Cadre

Senior Security Engineer NetImpact Strategies

Security Manager w/TS/SCI TekSynap

Security Engineer TekSynap

Control Validation Security Specialist W/Secret Clearance TekSynap

Security Assistance Coordinator (Mid-Level) Integrated Business & Technical Consultants

Security Assistance Coordinator (Junior Level) Integrated Business & Technical Consultants

Security Assistance Financial Analyst Integrated Business & Technical Consultants

Unarmed Security/Patrol Officer (Woodbridge/Lorton/Dumfries) Signal of Northern Virginia

Armed Security/Patrol Officer (Woodbridge/Dumfries) Signal of Northern Virginia

Unarmed Security Patrol Officer (Fairfax/Centreville/Herndon/Manassas) Signal of Northern Virginia

Unarmed Security/Patrol Officer (Alexandria) Signal of Northern Virginia

Security Officer - Mobile Driver Patrol Part Time Allied Universal

Security Officer Allied Universal

Security Guard Shopping Center Patrol Driver Allied Universal

Security Officer Experienced Driver Patrol Allied Universal

Security Officer Driver Vehicle Patrol Allied Universal

Security Officer Enhanced Part Time Allied Universal

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