IT Security Administrator Jobs in Denver, CO

21 - 40 of 392 Jobs

Linux / Unix Systems AdministratorJob Title - Linux / Unix Systems Administrator

Cymertek CorporationCompany Name - Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Linux / Unix Systems Administrator LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a dedicated and detail-oriented Linux / Unix Systems Administrator to join our team and ensure the stability, security, and efficiency of our systems infrastructure. In this role, you will be responsible for managing, monitoring, and maintaining Linux and Unix servers, troubleshooting system issues, and implementing soluti

Hybrid Systems Engineer, Sr (Windows / Linux) / Onsite: COJob Title - Hybrid Systems Engineer, Sr (Windows / Linux) / Onsite: CO

Lockheed MartinCompany Name - Lockheed Martin

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Littleton, Colorado, USA

Full-time

Job ID: 692395BR Date posted: Apr. 30, 2025 Description:Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 employees work with our partners around the world to bring the latest technology to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. This Enterprise Operations (

Network Engineer / Systems Administrator (SA)Job Title - Network Engineer / Systems Administrator (SA)

Cymertek CorporationCompany Name - Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Network Engineer / Systems Administrator (SA) LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a highly skilled and proactive **Network Engineer / Systems Administrator (SA)** to join our team and play a pivotal role in maintaining and enhancing our IT infrastructure. In this role, you will be responsible for designing, implementing, and managing network systems, as well as ensuring the reliability, secur

Senior Network Administrator (TS/SCI with Poly Clearance Required)Job Title - Senior Network Administrator (TS/SCI with Poly Clearance Required)

FluorCompany Name - Fluor

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Aurora, Colorado, USA

Full-time

Job Description This position requires an active (or ability to obtain) TS/SCI with Polygraph Clearance The Senior Network Administrator has advanced knowledge within designated Information Technology (IT) area of responsibility that is applied to broad and diverse assignments and associated requirements. This role plans and coordinates activities related to the design, development, implementation and integration of IT solutions. The Network Administrator analyzes, evaluates, and recommends

System AdministratorJob Title - System Administrator

Apex SystemsCompany Name - Apex Systems

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Denver, Colorado, USA

Full-time

Job#: 2068130 Job Description: We are looking for a system administrator with a minimum of 3 years of experience, Tanium experience is preferred. This role will be working 100% remote- candidates in consideration must reside in the State of Colorado. We cannot provide sponsorship or work C2C. Position: System Administrator, 2068130 Pay Rate Range: $40-$62/hourly Duration: Contract to start, potential to convert to full time employment Location: 100% Remote, candidate must reside in Colorado

Network AdministratorJob Title - Network Administrator

Cymertek CorporationCompany Name - Cymertek Corporation

•

Aurora, Colorado, USA

Full-time

Network Administrator LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a skilled and proactive Network Administrator to manage and support our organization's network infrastructure. In this role, you will ensure the reliability, security, and performance of our systems by maintaining hardware, troubleshooting network issues, and optimizing connectivity. Collaborating with a dynamic team, you will play

Sr Systems AdministratorJob Title - Sr Systems Administrator

Sierra Nevada CorporationCompany Name - Sierra Nevada Corporation

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Remote or Lone Tree, Colorado, USA

Full-time

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Sr Systems Administrator, you will be using your skills and expertise to assist in the analysis, development, and configuration of our existing software and systems that address business requirements and processes. You'll be responsible for evaluating the interface between hardware and software, operational requirements, and characteristics of our systems, establishing and documenting system para

Technical Integration Engineer - TS/SCI with PolyJob Title - Technical Integration Engineer - TS/SCI with Poly

LeidosCompany Name - Leidos

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Aurora, Colorado, USA

Full-time

Leidos is seeking a highly skilled Technical Integration Engineer (TIE) to join our dynamic team. This hybrid role combines the expertise of a Systems Administrator, Software Engineer, and Information Systems Security Engineer (ISSE) to design, implement, and maintain complex technical solutions that drive mission success. The Technical Integration Engineer will play a critical role in integrating systems, ensuring security compliance, and developing software solutions to support enterprise-leve

Oracle Database Administrator (DBA)Job Title - Oracle Database Administrator (DBA)

Cymertek CorporationCompany Name - Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Oracle Database Administrator (DBA) LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a dedicated and detail-oriented **Oracle Database Administrator (DBA)** to join our team and ensure the stability, security, and efficiency of our database systems. In this role, you will be responsible for managing and maintaining Oracle databases, optimizing performance, and implementing strategies to ensure data integr

Manager, Unified CommunicationsJob Title - Manager, Unified Communications

Complete Staffing SolutionsCompany Name - Complete Staffing Solutions

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Remote

Full-time

Our client, a top tier global law firm hasan opening for a Manager, Unified Communications. The Manager, Unified Communications will lead our organizations unified communications strategy, implementation, and operations. The successful candidate will oversee a team of engineers and administrators responsible for managing critical platforms such as Microsoft Teams (chat, conferencing, and calling), Microsoft 365 email, Microsoft OneDrive, and Cisco Unified Communications Manager (CUCM), and ensur

Linux Systems AdministratorJob Title - Linux Systems Administrator

Metasys TechnologiesCompany Name - Metasys Technologies

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Westminster, Colorado, USA

Contract

Linux Systems Administrator Security & Compliance (CIS Hardening & CMMC) Westminster, CO (onsite) 6+Month Contract Overview: Client is seeking a Senior Systems Administrator with deep expertise in Linux security hardening and compliance automation to support the implementation of CIS Benchmarks and CMMC Level 2 controls across AWS-hosted environments. This contract role focuses on securing RHEL 8, RHEL 9, and Rocky 9 systems used in government and defense workloads by designing, building, and

Network Engineer - PlacementJob Title - Network Engineer - Placement

Apex SystemsCompany Name - Apex Systems

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Denver, Colorado, USA

Full-time

Job#: 2070099 Job Description: For immediate response, please send to : WORD resume, desired hourly/salary rate, and best time to speak! Position: Network Engineer Location: Denver, CO (Downtown) - ONSITE, 1 Day Remote Duration: 6 Month Contract to Hire (1.5 Years Left on the Contract) MUST HAVE: Authorized to work in the US & ability to obtain a DHS PT (Heavy Financial/Criminal Check)8yrs & BS OR 12yrs & AS OR 14yrs & no degree AND CCNA or CCNP (please send copy)Experience with Cisco device

Relativity Senior Systems AdministratorJob Title - Relativity Senior Systems Administrator

Contact Government Services, LLCCompany Name - Contact Government Services, LLC

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Denver, Colorado, USA

Full-time

Relativity Senior Systems Administrator Employment Type: Full Time Department: Legal/IT We are seeking a Relativity Sr. Systems Administrator to join our team! You will handle a variety of projects to support and improve the organization's network systems. CGS brings motivated, highly skilled, and creative people together to solve the government's most dynamic problems with cutting-edge technology. To carry out our mission, we are seeking candidates who are excited to contribute to governmen

DevOps EngineerJob Title - DevOps Engineer

Cymertek CorporationCompany Name - Cymertek Corporation

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Aurora, Colorado, USA

Full-time

DevOps Engineer LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a motivated and innovative DevOps Engineer to join our team and help bridge the gap between development and operations. In this role, you will design, implement, and manage automated workflows and pipelines to enhance software delivery and system reliability. You will collaborate closely with development, QA, and IT teams to optimize per

Systems Manager IT CybersecurityJob Title - Systems Manager IT Cybersecurity

Commonspirit HealthCompany Name - Commonspirit Health

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Remote or Englewood, Colorado, USA

Full-time

Overview Inspired by faith. Driven by innovation. Powered by humankindness. CommonSpirit Health is building a healthier future for all through its integrated health services. As one of the nation's largest nonprofit Catholic healthcare organizations, CommonSpirit Health delivers more than 20 million patient encounters annually through more than 2,300 clinics, care sites and 137 hospital-based locations, in addition to its home-based services and virtual care offerings. CommonSpirit has more tha

Systems AdministratorJob Title - Systems Administrator

General DynamicsCompany Name - General Dynamics

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Aurora, Colorado, USA

Full-time

This is an unpaid fellowship through the Department of Defense (DoD) SkillBridge Program. The fellow selected for this role will not receive compensation or benefits from GDIT and will not be an employee, agent or contractor of GDIT but rather will remain an employee of the DoD and will receive compensation and benefits through the DoD. Type of Requisition: Regular Clearance Level Must Currently Posses: Top Secret SCI + Polygraph Clearance Level Must Be Able To Obtain: Top Secret SCI + Polygr

Linux / UNIX Systems Administrator (PeopleSoft / Oracle)Job Title - Linux / UNIX Systems Administrator (PeopleSoft / Oracle)

Cymertek CorporationCompany Name - Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Linux / UNIX Systems Administrator (PeopleSoft / Oracle) LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a skilled and motivated Linux / UNIX Systems Administrator (PeopleSoft / Oracle) to join our team and support the administration and optimization of our critical systems. In this role, you will manage and maintain Linux/UNIX environments, ensuring the stability, security, and performance of PeopleSoft

System EngineerJob Title - System Engineer

Cymertek CorporationCompany Name - Cymertek Corporation

•

Aurora, Colorado, USA

Full-time

System Engineer LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a dynamic and detail-oriented System Engineer to join our team and contribute to the design, implementation, and maintenance of complex systems. In this role, you will work to ensure that system components function seamlessly together while meeting performance, security, and reliability standards. The ideal candidate excels in troublesho

Lead Systems Administrator (TS/SCI with Poly Clearance Required)Job Title - Lead Systems Administrator (TS/SCI with Poly Clearance Required)

FluorCompany Name - Fluor

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Aurora, Colorado, USA

Full-time

Job Description Must possess a clearance at the TS/SCI access level, and have favorably completed a government issued polygraph The Lead Systems Administrator is highly knowledgeable within designated Industrial Control System (ICS) Information Technology (IT) area of responsibility and applies that knowledge toward broad and diverse assignments. This role plans and coordinates activities related to the design, development, implementation, and integration of IT solutions. The Lead Systems Ad

Cloud System AdministratorJob Title - Cloud System Administrator

Cymertek CorporationCompany Name - Cymertek Corporation

•

Aurora, Colorado, USA

Full-time

Cloud System Administrator LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a dedicated and innovative Cloud Systems Administrator to join our dynamic team. In this role, you will be at the forefront of managing and optimizing cloud-based environments to support mission-critical operations. You'll work collaboratively with a talented group of professionals, leveraging cutting-edge technologies to ensure s