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S1 Security Jobs (NOW HIRING)

System One

Physical Access Engineer

Washington, DC

Remote Hours: 40 hours/week Security Clearance: Public Trust Overview We are supporting a federal ... S1 System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and ...

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How much do s1 security jobs pay per hour?

As of Jun 21, 2026, the average hourly pay for s1 security in the United States is $26.61, according to ZipRecruiter salary data. Most workers in this role earn between $21.15 and $30.53 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an S1 Security professional, and why are they important?

To thrive as an S1 Security professional, you need a strong understanding of security protocols, risk assessment, and incident response, often supported by relevant education or military experience. Familiarity with security management systems, surveillance tools, and access control software is typically required. Strong attention to detail, situational awareness, and effective communication are crucial soft skills for this role. These capabilities ensure the safety and security of personnel and assets while enabling swift and coordinated responses to potential threats.

What are S1 Security personnel?

S1 Security personnel typically refer to members of a military or organizational staff responsible for managing personnel security matters. In military contexts, the S1 section handles administrative tasks, including personnel records, security clearances, and ensuring compliance with security protocols. Their duties often involve overseeing background checks, training on security procedures, and maintaining confidentiality of sensitive information. S1 Security staff play a crucial role in safeguarding organizational integrity and protecting classified data.

What are some common challenges faced by S1 Security personnel, and how are they addressed within a typical team structure?

S1 Security personnel often encounter challenges such as managing unpredictable incidents, maintaining vigilance during long shifts, and balancing enforcement with customer service. These challenges are mitigated through thorough training, regular team briefings, and clear communication protocols. Most teams operate with a shift supervisor and designated roles, ensuring support and guidance are always available. Additionally, ongoing professional development and debrief sessions help team members learn from incidents and continuously improve their performance.

What is the difference between S1 Security vs Security Guard?

AspectS1 SecuritySecurity Guard
Required CredentialsSecurity license, training, background checkSecurity license, basic training
Work EnvironmentEvent venues, corporate buildings, retail storesShopping malls, residential complexes, events
Employer & Industry UsageSecurity firms, private companies, government contractsPrivate security companies, retail, hospitality
Common Search & ComparisonYesYes

Both S1 Security and Security Guards require security licenses and work in similar environments like retail, events, and corporate settings. S1 Security often involves more specialized roles or higher responsibilities, but both roles share foundational credentials and industry usage. Understanding these differences helps in choosing the right security career path.

More about S1 Security jobs
What job categories do people searching S1 Security jobs look for? The top searched job categories for S1 Security jobs are:
S1 Security jobs near you
Sr. Exchange Online (EXO) Administrator (Systems Engineer)

Sr. Exchange Online (EXO) Administrator (Systems Engineer)

System One Holdings, LLC

Washington, DC • On-site

Full-time

Posted 3 days ago

Job description

Senior Exchange Online (EXO) Administrator
Washington, DC -100% onsite
Per Federal contract U.S. citizenship is required
Must be able to obtain Public Trust clearance
Start Date- 08/2026 through 12/2027 with possibility of long-term contract extension based on performance
Open to W2 and C2C
Must apply by June 30th
Position Summary
Manage and maintain our hybrid Exchange environment, including on-premises Exchange Server and Exchange Online (Microsoft 365). Ensure reliable email services, security, and compliance across the organization.
Key Responsibilities
• Administer and support hybrid Exchange infrastructure (on-premises and Exchange Online)
• Manage mailbox migrations, mail flow, and hybrid connectivity between environments
• Configure and maintain transport rules, DLP policies, retention policies, and email security features
• Monitor system performance, troubleshoot issues, and resolve user email problems
• Implement anti-spam, anti-malware, and threat protection using Microsoft Defender for Office 365
• Manage user provisioning, distribution groups, shared mailboxes, and permissions
• Maintain hybrid synchronization and directory services (Azure AD Connect)
• Execute eDiscovery, legal holds, and compliance investigations
• Document configurations, procedures, and maintain system architecture records
• Provide end-user support and training on email features
Required Technologies
• Microsoft Exchange Online & Exchange Server (hybrid environment)
• PowerShell (Exchange Online/On-Prem Management)
• Microsoft 365 Admin Center & Exchange Admin Center (EAC)
• Azure Active Directory & Azure AD Connect
• Exchange Online Protection (EOP) & Microsoft Defender for Office 365
• DNS, SPF, DKIM, DMARC, mail flow routing
Required Experience
• 4+ years managing Exchange environments
• 2+ years with hybrid Exchange (on-premises + Exchange Online)
• 2+ years PowerShell scripting for Exchange administration
• Hands-on experience with mailbox migrations and hybrid deployments
• Email security and compliance implementation
Preferred Qualifications
• Microsoft 365 Certified: Messaging Administrator Associate
• Experience with 500+ user environments
• ITIL or service management experience
Ref: #851-Rockville-S1

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