Entry Level Security Administrator Jobs in Denver, CO

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Top Secret cleared Ground Systems Engineer

ClearBridge Technology Group

•

Aurora, Colorado, USA

Contract

Our client, a large government integrator located in Aurora, CO, is looking to hire a Top Secret cleared Ground System Engineer (GSE) for a 12 month contract. The consultant will work onsite to provide real time, operational support to Space Force crews and contractor test teams for the operation and maintenance of system software and equipment (identifying system problems, trouble shooting, and correcting both software and hardware failures). The GSE will perform software maintenance support
Posted 36 days ago | Updated 1 hour ago

Network System Administrator

Cymertek Corporation

•

Aurora, Colorado, USA

Full-time

Network System 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 dedicated and detail-oriented Network Systems Administrator to join our team and oversee the design, implementation, and maintenance of our network and system infrastructure. In this role, you will ensure the reliability, security, and efficiency of both network operations and system performance. Collaborating with a team
Posted 60+ days ago | Updated 4 hours ago

Senior Site Reliability Engineer

General Dynamics

•

Aurora, Colorado, USA

Full-time

Basic Qualifications Bachelor's degree in computer science, a related field or equivalent relevant experience is required, plus a minimum of 8 years of relevant experience; or Master's degree, plus 6 years of relevant experience. CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the
Posted 32 days ago | Updated 4 hours ago

Principal Platform Cloud Architect (Onsite)

RTX Corporation

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Aurora, Colorado, USA

Full-time

Date Posted: 2025-06-11 Country: United States of America Location: CO102: 16800 E Centretech Pkwy,Aurora 16800 East Centretech Pkwy Building S75, Aurora, CO, 80011 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: TS/SCI without Polygraph At Raytheon, the foundation of everything we do is rooted in our values and a higher calling -
Posted 22 days ago | Updated 4 hours ago

Senior Network Engineering Lead

TEKsystems c/o Allegis Group

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Aurora, Colorado, USA

Full-time

Description Responsibilities: Support the installation, integration, and testing of Commercial-Off-The-Shelf (COTS) and custom equipment used to further research efforts on superconducting microelectronic devices. Identify, troubleshoot, and remediate equipment issues to support system build-out and sell-off. Support the existing network to maintain connectivity and support large intel distribution Collaborate with the government customer to ensure that requirements and deliverables are met Addi
Posted 6 days ago | Updated 1 hour ago

Site Reliability Engineer

General Dynamics

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Remote or Aurora, Colorado, USA

Full-time

Basic Qualifications Bachelor's degree in Computer Science, a related field or equivalent experience is required plus a minimum of 5 years of relevant experience; or Master's degree plus 3 years of relevant experience. CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of
Posted 32 days ago | Updated 4 hours ago

Oracle Database Software Engineer II (Onsite)

RTX Corporation

•

Aurora, Colorado, USA

Full-time

Date Posted: 2025-07-01 Country: United States of America Location: CO106: 16470 East Hughes Drive,Aurora 16470 East Hughes Drive Building S77, Aurora, CO, 80011 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to hel
Posted 1 day ago | Updated 4 hours ago

Infrastructure Engineer - ENG05 - Cleared On-Site

Apex Systems

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Aurora, Colorado, USA

Full-time

Job#: 2078225 Job Description: Principal Platform (Cloud Architect) Engineer Job Summary: The Platform Engineering group is seeking a Principal Platform Engineer / Cloud Architect to ensure the successful delivery of a Private Cloud Infrastructure for one of our premier programs on site. As the Principal Platform Engineer / Cloud Architect, you will be supporting the program as a Sr. technical contributor within a multi-disciplined team through our system modernization efforts to address cloud
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Posted 22 days ago | Updated 5 hours ago

Cloud Infrastructure Engineer

Cymertek Corporation

•

Aurora, Colorado, USA

Full-time

Cloud Infrastructure Engineer 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 innovative Cloud Infrastructure Engineer to join our team and play a key role in designing, implementing, and optimizing our cloud environments. In this role, you will ensure the scalability, reliability, and security of cloud-based systems while collaborating with cross-functional teams to support critical busine
Posted 60+ days ago | Updated 4 hours ago

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

Lockheed Martin Corporation

•

Remote or Littleton, Colorado, USA

Full-time

Job 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 (EO) position supports the Lockheed Marti
Posted 60+ days ago | Updated 4 hours ago

Sr. Principal Linux System Administrator

Raytheon

•

Aurora, Colorado, USA

Full-time

Date Posted: 2025-07-01 Country: United States of America Location: CO108: 16201 East Centretech Parkway 16201 East Centretech Parkway Building S78, Aurora, CO, 80011 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: TS/SCI with Polygraph Sr. Principal Linux System Administrator - Aurora, CO, must have an active TS/SCI CI Poly
Posted 5 days ago | Updated 12 hours ago

Network Operations Center (NOC) Designer - Tier 3

CACI International, Inc.

•

Denver, Colorado, USA

Full-time

Network Operations Center (NOC) Designer - Tier 3 Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local Anticipated Posting End: There is not an anticipated end date for this posting since applications are needed on an ongoing basis. Team CACI has an exciting and challenging opportunity available for a Network Engineer supporting an Intellig
Posted 23 days ago | Updated 16 hours ago

System Administrator

Cymertek Corporation

•

Aurora, Colorado, USA

Full-time

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 proactive and detail-oriented System Administrator to join our team and help maintain the stability, security, and performance of our IT infrastructure. In this role, you will be responsible for managing servers, networks, and other critical systems, ensuring that they run efficiently and securely. You will also handle system updates,
Posted 60+ days ago | Updated 4 hours ago

IT Security Architect - Remote

OP Consulting Group LLC

•

Remote

Full-time, Part-time, Third Party, Contract

Job Info: Job Title: IT Security Architect Client: State of VA Start Date: 18 Aug, 2025 (Tentative) Position Type: Contract Duration: 04/30/2026 (with possibility of extension) Location: Remote (On Site Required for the first day to get ID and laptop from Richmond, VA) Work Hours: 40 hours/week Interview Type: In-person onsite Internal Job ID: OOJ - 4053 Client Job ID: 767470 Short Description Security Architect IV On Site Required for the first day to get ID and laptop. The rest of the time c
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Posted 11 hours ago | Updated moments ago

Technical Writer / Remote (Denver, CO) ,3 Months Contract

Suncap Technology

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Remote or Denver, Colorado, USA

Contract

Technical Writer Location: Remote (Denver, CO Must be locals to CO) Duration: 3 Months Contract Technical Writer Statement of Work: Documentation 70% This position assists in providing documentation to support the Server Administration and Sustainment Utilize available enterprise tools documenting processes. Consolidate all documentation and store in a Service Now Review existing documentation and review structure and update Monitor and follow up Procedures Create SOPs, Guidelines, How-To docume
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Posted 60+ days ago | Updated 1 hour ago

Project Engineering Manager

Lockheed Martin Corporation

•

Englewood, Colorado, USA

Full-time

Job Description The mission matters. So do the people behind it. With advancing defense technology at our core, what sets us apart is a culture of collaboration, purpose, and impact. What is the mission? Fleet Ballistic Missiles (FBM) is one of Lockheed Martin's outstanding Lines of Businesses that prioritizes partnership, integrity, and reliability. The Life Extension 2 team is an organization within the greater FBM program which supports the development of the Next Generation System by develop
Posted 3 days ago | Updated 4 hours ago

Systems Engineer Staff - Clearance Required

Lockheed Martin Corporation

•

Boulder, Colorado, USA

Full-time

Job Description Job Opportunity: Systems Engineer Stf - Next Gen Geo Operations and Sustainment Team We are seeking a highly skilled and dynamic Systems Engineer to join our Next Gen Geo (NGG) Operations and Sustainment team. As a key member of this team, you will play a critical role in driving operational excellence and optimizing processes. Description: As a Ground Systems Engineer for the Next Generation GEO Operations and Sustainment Team you will: - Provide real time, operational support
Posted 60+ days ago | Updated 4 hours ago

DevOps Engineer/Systems Administrator

SNI Technology

•

Centennial, Colorado, USA

Contract

Job Details SNI Technology's client is actively seeking to hire an IT DevOps Engineer for an exciting 3-month, contract-to-hire opportunity located in Centennial, CO! Please note this is a hybrid work environment requiring 3 days onsite per week (2 days remote/work from home). Summary We are seeking a mid-level IT professional for a hybrid role combining responsibilities in Systems Administration and Data Warehouse/Python development. This position supports core IT infrastructure, including Li
Posted 4 days ago | Updated 2 hours ago

Enterprise Applications Senior ServiceNow Engineer

Colorado PERA

•

Denver, Colorado, USA

Full-time

JOB SUMMARY Colorado Public Employees Retirement Association supports the aspirations and dreams of a secure defined benefit retirement for over 700,000 members working for Colorado. By joining our team, you would become one of them, have direct influence supporting the retirement security of people you know, and be part of an IT team that enjoys teamwork, exceptional benefits, and opportunity to grow your skills and learn new skills. We are seeking a highly skilled and experienced Senior Servi
Posted 7 days ago | Updated 5 days ago

Senior Cybersecurity Engineer - Security Partner US Federal

Workday, Inc.

•

Boulder, Colorado, USA

Full-time

Your work days are brighter here. At Workday, it all began with a conversation over breakfast. When our founders met at a sunny California diner, they came up with an idea to revolutionize the enterprise software market. And when we began to rise, one thing that really set us apart was our culture. A culture which was driven by our value of putting our people first. And ever since, the happiness, development, and contribution of every Workmate is central to who we are. Our Workmates believe a h
Posted 58 days ago | Updated 4 hours ago