Junior Systems Security Administrator Job at Robert Half (Sugar Land, TX)

Junior Systems Administrator

We are looking for an entry-level Systems Administrator to provide remote techni...

Location

United States , East Hartford

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

At least 3 years of experience in the IT industry, with a focus on system administration
Proficiency in PC operating systems, particularly Windows 11, 10, and 7
Working knowledge of Windows Server Operating Systems and virtual environments such as Hyper-V and VMware
Skilled in network troubleshooting, including firewalls, switches, VLANs, and networking protocols
Familiarity with security tools and antivirus solutions
Effective verbal and written communication skills to interact with clients and team members
Strong problem-solving abilities with a creative approach to challenges
Preferred certifications such as A+, Network+, Security+, Microsoft 365, or equivalent

Job Responsibility

Deliver remote technical support to clients, ensuring timely and effective resolution of issues
Monitor and adhere to established service level agreements (SLAs) while tracking customer concerns
Participate in scheduled after-hours on-call rotations, typically three to four times annually
Utilize tools like ConnectWise for thorough documentation, issue management, and client interaction
Troubleshoot and resolve issues related to network infrastructure, including firewalls, switches, VLANs, and networking protocols
Manage and support Windows Server Operating Systems and virtualization technologies such as Hyper-V and VMware
Assist in maintaining security measures by working with tools like antivirus software and other security platforms
Provide support and upgrades for PC operating systems, including Windows 11, 10, and 7
Collaborate with team members to complete additional tasks as assigned

What we offer

medical
vision
dental
life and disability insurance
401(k) plan

Junior Linux Systems Administrator

VES, LLC is seeking a motivated and proactive Junior Linux Systems Administrator...

Location

United States , Aberdeen Proving Ground

Salary:

80000.00 - 90000.00 USD / Year

VES

Expiration Date

Until further notice

Requirements

Must be local to the Aberdeen, MD area
Ability to work on-site 4–5 days per week
U.S. Citizenship required
Ability to obtain and maintain a security clearance
0–3 years of relevant professional or internship experience
Hands-on experience administering Linux systems (Ubuntu or similar distributions), including system configuration, maintenance, and troubleshooting
Strong troubleshooting skills across systems, hardware, and basic connectivity issues
Solid understanding of foundational networking concepts (e.g., IP addressing, subnetting, routing, basic network troubleshooting)
Experience with scripting or automation using Python
Experience with either containerization (Docker) or virtualization platforms (e.g., VMware vSphere), with exposure to system provisioning and maintenance

Job Responsibility

Administer and maintain Ubuntu Linux systems, including system configuration, patching, and troubleshooting
Support day-to-day operation and maintenance of physical, containerized, and virtualized server environments
Manage and track equipment and assets across operational and lab environments, including intake, inventory, and lifecycle management
Provide Tier 1 help desk support, troubleshooting hardware, software, and connectivity issues
Support and maintain containerized or virtualized environments (Docker and/or VMware vSphere), including basic provisioning and upkeep
Perform hands-on infrastructure tasks, including racking equipment, running cables, hardware installation, and lab environment maintenance
Assist with basic troubleshooting of network infrastructure (e.g., switches, firewalls, cabling, and connectivity issues)
Monitor systems and proactively identify, prioritize, and resolve issues through a ticketing system
Collaborate with team members and stakeholders to support system integration, testing, and operational activities
Maintain accurate system documentation, configurations, and standard operating procedures

What we offer

401(k) match
Highly Competitive Salary
Up to 15 Paid Vacation days / year
11 Paid Holidays
Flexible work/life balance culture

Fulltime

Systems Administrator III

The Systems Administrator will work closely with the system administrator team o...

Location

United States , Colorado Springs

Salary:

79046.56 - 137446.63 USD / Year

Arcfield

Expiration Date

Until further notice

Requirements

BS 5-7 Years, MS 3-5 years, PhD 0-2 years
Must possess the required DoD 8140 certification (e.g., CompTIA Security+)
Must possess and maintain an active U.S. TS/SCI Clearance (A U.S. Security Clearance that has been active in the past 24 months is considered active)
Bachelor of Science degree from an accredited course of study in engineering, engineering technology (including manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science
5-7 years related work experience or an equivalent combination of technical education and experience
Strong systems thinking, analytical and problem-solving skills
Practical experience with requirements decomposition, requirements tracing and configuration management
Experience writing test plans and procedures and executing system-level integration and verification
Familiar with standard engineering tools such as requirements management (DOORS or similar), MBSE (MSOSA/Cameo or similar), test management, and common collaboration tools (Jira, Confluence, Git)
Proficient with one or more scripting or programming languages (e.g., Python, Bash, Matlab) for test automation and data analysis

Job Responsibility

Reviews, develops, documents, and maintains system requirements and traceability across the lifecycle
Defines test strategies, plans, procedures, and acceptance criteria for component, integration, and system-level testing
Designs and executes verification & validation activities (functional, interface, performance, reliability, regression)
Analyzes test results, performs root cause analyses, and recommends corrective actions
Collaborates across engineering disciplines, working closely with software developers, system architects, and test engineers to validate end-to-end functionality and mission effectiveness
Leads integration of hardware, software, and mission systems in secure DoD environments, ensuring interoperability, performance, and mission assurance
Applies modern DevSecOps practices—including CI/CD pipelines, automated testing, containerized deployments, and infrastructure as code—to streamline integration and test activities
Stands up, configures, and maintains secure test environments leveraging cloud-native and virtualized resources (e.g., AWS GovCloud, Azure Government, or on-premises equivalents)
Uses model-based systems engineering (MBSE) and requirements management tools to support design, analysis, and traceability
Contributes to risk, issue, and opportunity management

What we offer

Health Insurance
Life Insurance
Paid Time Off
Holiday Pay
Short Term and Long-Term Disability
Retirement and Savings
Learning and Development opportunities
wellness programs

Fulltime

Systems Administrator

Hands-on Systems Administrator supporting a high-throughput manufacturing enviro...

Location

United States , Morrisville

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

3+ years Systems Administration experience in manufacturing, industrial, or high-throughput environments
Open to junior candidates who are motivated and eager to grow
Experience with air-gapped or isolated networks (including remote access)
Background in Systems, Network, or Security Administration
Strong Windows and Linux administration experience
Experience with server buildouts, virtualization, imaging, and endpoint lifecycle management
Experience with VMware (vCenter preferred) or enterprise platforms like NetApp, Pure, or VAST
Strong troubleshooting skills across hardware, software, servers, and networking
Experience with asset tracking, inventory management, and configuration control
Solid understanding of networking fundamentals (VLANs)

Job Responsibility

Hands-on Systems Administrator supporting a high-throughput manufacturing environment
Focus on stabilizing infrastructure currently under strain (lean on-site team)
Bridge IT and OT environments, working closely with manufacturing and factory teams
Administer Windows and Linux systems (server buildouts, imaging, virtualization, endpoint lifecycle)
Troubleshoot hardware, software, server, network, and endpoint issues in a production-critical setting
Support air-gapped / isolated environments, including remote access solutions
Configure and support endpoints (connectivity, authentication, device-level issues)
Maintain asset inventory, configuration management, and system documentation
Assist with low-voltage systems and complete infrastructure punch list items
Read and interpret architectural diagrams and support evolving workflows

What we offer

medical
vision
dental
life and disability insurance
401(k) plan

Microsoft Systems Administrator

Location: Alexandria, VA Years’ Experience: 7+ Years of experience Education: ...

Location

United States , Alexandria

Salary:

Not provided

Sparibis

Expiration Date

Until further notice

Requirements

Applicants must be able to obtain and maintain a Public Trust security clearance. United States Citizenship is required as part of the eligibility criteria to be able to obtain this type of security clearance. 7+ years of professional experience in Systems Administration
3+ years of experience leading IT systems administration, including experience leading or overseeing system infrastructure
Bachelor’s degree in information technology or related field or equivalent professional experience
Must be able to support onsite work at the Alexandria, VA location as needed
Must have experience managing a Microsoft-based infrastructure by overseeing the deployment, migration, configuration, and support of Microsoft technologies such as Windows Server, Entra ID, Active Directory, Intune, Exchange Online, Office 365, SharePoint, Teams, and Azure
Windows Task Manager expertise (Cloud computing platforms such as AWS, Microsoft Azure, or Google Cloud Platform)
Experience providing end user system support
Experience managing and troubleshooting VMware vSphere environments
Experience with overseeing on-prem hardware infrastructure (e.g., servers and storage), the on-prem hypervisor environment (e.g., VMWare, vSphere), and CSP infrastructure hosted in Microsoft Azure
Experience monitoring the performance of virtual environments and optimizing resource allocation to ensure efficient operation

Job Responsibility

Serve as the senior technical escalation point for complex system issues
Manage and maintain the Microsoft-based infrastructure including servers, networks, and applications
Ensure the Microsoft infrastructure is scalable, secure, stable, and efficient operation of systems by performing regular updates, backups, and troubleshooting tasks
Oversee the deployment, configuration and support of IT systems to ensure optimal performance and security using vSphere, Cloud Service Providers, appliances, etc.
Manage and maintain Microsoft-based IT infrastructure, including Windows Server, Windows 11, Entra ID, Active Directory, Intune, Exchange, Office 365, SharePoint, Teams, and Azure
Manage software deployment and updates through tools like SCCM and Intune
Provide technical expertise and ensure servers, endpoints, and Microsoft services are effectively integrated into overall IT strategy
Manage user accounts, permissions, and access controls to ensure system integrity and security
Monitor system performance and address issues that arise
Implement and maintain monitoring systems for proactive and reactive support

Fulltime

Senior Systems Administrator

Astrion has an exciting opportunity for a Senior Information Systems Administrat...

Location

United States , Montgomery

Salary:

Not provided

Astrion

Expiration Date

Until further notice

Requirements

Master’s or Doctorate in a related field with 10 years of experience, including 5 years in DoD
OR Bachelor’s degree in a related field with 12 years of experience, including 5 years in DoD
OR 15 years of directly related experience with required certifications, including 8 years in DoD
Professional Certification: DoD 8140 451-Intermediate Certification required (Security+)
Advanced system administration expertise across Network, Web, and communication systems, including LAN/WAN environments and network security
Experience preparing technical implementation plans outlining integrated solutions, milestones, timelines, and critical paths
Hands-on experience with configuration and daily operations of business systems (mainframe, client/server, cloud-based, or hybrid)
Strong background in optimizing system operations, resource utilization, and performance
Proficiency in system capacity analysis, forecasting, and planning
Ability to provide expert-level user assistance for accessing and navigating business systems

Job Responsibility

Provide advanced system administration for Network, Web, and communication systems, ensuring secure and effective operations across LAN/WAN environments
Support the Agile Support Office in establishing, documenting, and optimizing technical baselines for BES programs
Partner with functional sponsors, CDTs, and infrastructure providers to assess and deliver hosting environment options aligned with DCOI and Air Force Common Computing Environment standards
Foster reuse, interoperability, and efficiency across application technical infrastructures and shared services
Support lifecycle management by delivering and maintaining tools, environments, and services required by program offices and development teams
Prepare and execute detailed implementation plans, including integrated technical solutions, schedules, and risk considerations
Conduct system performance optimization and capacity planning to meet evolving mission needs
Assist users in accessing and effectively using business systems and technical environments
Contribute to AFLCMC/GBQ process improvement initiatives by supporting standard, repeatable practices and participating in CPI activities
Ensure all system administration and infrastructure activities comply with DoD, Air Force, and AFLCMC policies and technical standards

What we offer

Competitive salaries
Continuing education assistance
Professional development
Multiple healthcare benefits package options
401K with employer matching
Competitive time off policy along with a federally recognized holiday schedule

Fulltime

Systems Administrator III

Location

United States , Colorado Springs

Salary:

79046.56 - 137446.63 USD / Year

Arcfield

Expiration Date

Until further notice

Requirements

BS 5-7 Years, MS 3-5, PhD 0-2
Must possess the required DoD 8140 certification (e.g., CompTIA Security+)
Must possess and maintain an active U.S. TS/SCI Clearance (A U.S. Security Clearance that has been active in the past 24 months is considered active)
Bachelor of Science degree from an accredited course of study in engineering, engineering technology (including manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science
5-7 years related work experience or an equivalent combination of technical education and experience
Strong systems thinking, analytical and problem-solving skills
Practical experience with requirements decomposition, requirements tracing and configuration management
Experience writing test plans and procedures and executing system-level integration and verification
Familiar with standard engineering tools such as requirements management (DOORS or similar), MBSE (MSOSA/Cameo or similar), test management, and common collaboration tools (Jira, Confluence, Git)
Proficient with one or more scripting or programming languages (e.g., Python, Bash, Matlab) for test automation and data analysis

Job Responsibility

Reviews, develops, documents, and maintains system requirements and traceability across the lifecycle
Defines test strategies, plans, procedures, and acceptance criteria for component, integration, and system-level testing
Designs and executes verification & validation activities (functional, interface, performance, reliability, regression)
Analyzes test results, performs root cause analyses, and recommends corrective actions
Collaborates across engineering disciplines, working closely with software developers, system architects, and test engineers to validate end-to-end functionality and mission effectiveness
Leads integration of hardware, software, and mission systems in secure DoD environments, ensuring interoperability, performance, and mission assurance
Applies modern DevSecOps practices—including CI/CD pipelines, automated testing, containerized deployments, and infrastructure as code—to streamline integration and test activities
Stands up, configures, and maintains secure test environments leveraging cloud-native and virtualized resources (e.g., AWS GovCloud, Azure Government, or on-premises equivalents)
Uses model-based systems engineering (MBSE) and requirements management tools to support design, analysis, and traceability
Contributes to risk, issue, and opportunity management

What we offer

Health Insurance
Life Insurance
Paid Time Off
Holiday Pay
Short Term and Long-Term Disability
Retirement and Savings
Learning and Development opportunities
wellness programs

Fulltime

Systems Administrator

The systems administrator will join the IT operations team (IT Ops) supporting a...

Location

United States , Falls Church

Salary:

66000.00 - 68000.00 USD / Year

Innovative Management Concept

Expiration Date

Until further notice

Requirements

High School Diploma or equivalent required
At start date, must possess a valid IAT Level II certification in ACTIVE status
In addition, must obtain a computing environment certification (e.g., ITIL 4, CySA+) within six months of hire
When 8140 requirements are implemented on program/contract, employees will need to conform to 8140 certification standards
3+ years of related experience in system administration and/or IT operations environment
Experience with: ServiceNow ticketing systems, MS Windows Server 2019, Active Directory administration, Linux and Cisco network systems
Extensive knowledge of: MS Windows 10 and MS Office, and Virtualization, patch management, and network security principles
Physical requirements include lifting and/or pulling up to 40lbs., sitting, bending, and standing
Demonstrated ability to exercise independent judgment, prioritize work, and resolve complex issues with minimal supervision
Excellent organizational and time management skills, with the ability to collaborate effectively and adapt to changing operational needs, with strong problem-solving and decision-making skills, while supporting a fast-paced and ITIL transitional environment

Job Responsibility

Support a 24x7x365 IT operations environment, support the team process, and participate in cross-functional teams
Administer, maintain, and enhance IT infrastructure, including physical and virtual servers, storage, and network systems
Monitor system performance, resolve incidents, and fulfill service requests using ITSM tools such as ServiceNow, maintain accurate documentation and communication throughout
Troubleshoot and resolve hardware, software, and network issues across Windows, Linux, and Cisco environments
Coordinate with external partners for escalated issues beyond program control
Manage Active Directory and core IT services, including user access, patch management, and system updates
Implement and maintain cybersecurity controls in compliance with DoD and organizational security standards
conduct audits and security assessments as required
Develop and maintain disaster recovery and business continuity plans
manage and test backup and recovery procedures

What we offer

401(k) with a 3% employer match
paid time off
paid holidays
FSA spending
dental
vision
health insurance
company-sponsored AD&D
life insurance

Fulltime

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Junior Systems Security Administrator

Job Description

Job Responsibility

Requirements

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