Senior IT Security Architect Jobs in Denver, CO

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Systems Engineer III - MBSE

Sierra Nevada Corporation

•

Remote or Lone Tree, Colorado, USA

Full-time

The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR and aviation, it is a leading prime manned and unmanned aircraft systems integrator for innovative, high-performance ISR and aviation systems. Its end-to-end Command, Control, Computers, Communications and Intelligence, Surveillance & Reconnaissance (C4ISR) capabilities encompass design, integration, test, certification, ground/flight training and complete logistics support. IAS t
Posted 41 days ago | Updated 4 hours ago

Sr. Principal Linux System Administrator

Raytheon

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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 18 days ago | Updated 18 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 35 days ago | Updated 4 hours ago

Staff Software Engineer, Embedded

Lockheed Martin Corporation

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Littleton, Colorado, USA

Full-time

Job Description For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy's mission to provide affordable and credible strategic defense. We offer unique career opportunities and challenges on a program with a rich history and exciting future. We help keep this nation and our allies secure. The FBM Program is experiencing significant growth and we need your expertise to deliver amazing new technologies to our customers while maintaining the technical requirements of the s
Posted 16 days ago | Updated 4 hours ago

Lead System Security Engineer

Parsons Services Company

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Boulder, Colorado, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for an amazingly talented Lead System Security Engineer to join o
Posted 25 days ago | Updated 4 hours ago

Systems Engineering Manager

Lockheed Martin Corporation

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Littleton, Colorado, USA

Full-time

Job Description Protecting what matters most is the mission that matters most. At Lockheed Martin, we are shaping the future of space exploration and defense. As a leader in the industry, we are known for our pioneering spirit, collaborative partnerships, innovative thinking, and commitment to building remarkable products. Our team is dedicated to making a positive impact on the world by leveraging our unique skills and experiences to tackle complex engineering challenges. We are passionate ab
Posted 11 days ago | Updated 4 hours ago

Senior Software Engineer, Embedded

Lockheed Martin Corporation

•

Littleton, Colorado, USA

Full-time

Job Description For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy's mission to provide affordable and credible strategic defense. We offer unique career opportunities and challenges on a program with a rich history and exciting future. We help keep this nation and our allies secure. The FBM Program is experiencing significant growth and we need your expertise to deliver amazing new technologies to our customers while maintaining the technical requirements of the s
Posted 18 days ago | Updated 4 hours ago

Sr Systems Engineer - MBSE

Sierra Nevada Corporation

•

Remote or Lone Tree, Colorado, USA

Full-time

The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR and aviation, it is a leading prime manned and unmanned aircraft systems integrator for innovative, high-performance ISR and aviation systems. Its end-to-end Command, Control, Computers, Communications and Intelligence, Surveillance & Reconnaissance (C4ISR) capabilities encompass design, integration, test, certification, ground/flight training and complete logistics support. IAS t
Posted 41 days ago | Updated 4 hours ago

Computer Network Defense Analyst (CNDA)

Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Computer Network Defense Analyst (CNDA) LOCATION Aurora, CO 80014 CLEARANCE TS/SCI CI Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a skilled and detail-oriented Computer Network Defense Analyst (CNDA) to join our cybersecurity team. In this role, you will be responsible for monitoring, analyzing, and defending network systems against potential threats and vulnerabilities. You will work with advanced tools and technologies to identify security risks
Posted 60+ days ago | Updated 4 hours ago

Network Engineer

Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Network 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 proactive Network Engineer to join our team and play a key role in designing, implementing, and maintaining our network infrastructure. In this role, you will ensure the reliability, security, and scalability of our network systems, troubleshoot issues, and optimize performance to meet the needs of a dynamic and growing organi
Posted 60+ days ago | Updated 4 hours ago

Network Systems Architect, Staff (Level IV)

Lockheed Martin Corporation

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Littleton, Colorado, USA

Full-time

Job Description Space is a critical domain, connecting our technologies, our security, and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire, and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We're creating future-ready solut
Posted 3 days ago | Updated 4 hours ago

Cross-Domain Software Developer

Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Cross-Domain Software Developer LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a talented and innovative Cross-Domain Software Developer to design, implement, and maintain secure solutions for transferring data across varied security domains. In this role, you will work on cutting-edge technologies to develop software that ensures seamless and secure communication between systems with differing classifi
Posted 60+ days ago | Updated 4 hours ago

Sr Systems Engineer - Operations Research

Sierra Nevada Corporation

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Lone Tree, Colorado, USA

Full-time

Military operations analysis / research influences every SNC technology, program, and strategic area of focus. The successful candidate for this position will join a fast-paced, agile team of analysts focused on conducting analysis of future, and existing military systems to inform strategic, program, business development, and customer decisions. The candidate will work in a team environment to execute impactful studies focused on quantifying the mission effectiveness of SNC technology concepts
Posted 1 day ago | Updated 4 hours ago

Chief Architect

SAIC

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Boulder, Colorado, USA

Full-time

Job ID: 2506012 Location: BOULDER, CO, US Date Posted: 2025-06-30 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: Top Secret Clearance Level Must Be Able to Obtain: TS/SCI Potential for Remote Work: No Description SAIC is seeking a Chief Architect to join our team in Boulder, CO to support an effort with US Space Force. As the Chief Architect you will be overseeing and planning the enterprise-le
Posted 60+ days ago | Updated 2 hours ago

DevOps Engineer/Systems Administrator

SNI Technology

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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 18 days ago | Updated 2 hours ago

DevOps Engineer

General Dynamics

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Boulder, Colorado, USA

Full-time

Basic Qualifications Education Requirements: Requires a Bachelor's degree in Software Engineering, or a related Science, Engineering or Mathematics field. Also requires 2+ years of job-related experience or a Master's degree. Agile experience preferred. 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 classifie
Posted 26 days ago | Updated 4 hours ago

Senior Cloud Infrastructure Engineer (Azure)

Raymond James Financial Inc

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Denver, Colorado, USA

Full-time

Job Description Note: This position will follow our hybrid work model, we expect the selected candidate to be in office 2-3 days a week at the St. Petersburg, FL Corporate Office or the Denver, CO Tech Center. Job Summary: This role will help drive and implement engineering solutions and strategies that will enable DevOps and Azure hybrid cloud technology adoption. This includes designing and participating in the development of cloud-based solutions that scale to help deliver both internal and
Posted 60+ days ago | Updated 4 hours ago

Android Mobile Reverse Engineer

Cymertek Corporation

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Aurora, Colorado, USA

Full-time

Android Mobile Reverse 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 Android Mobile Reverse Engineer to join our team and tackle complex challenges in analyzing, deconstructing, and understanding Android applications and systems. In this role, you will use your technical expertise to uncover vulnerabilities, enhance system security, and contribute to the development of innovative sol
Posted 60+ days ago | Updated 4 hours ago

System Administrator Associate_TS/SCI with Polygraph

General Dynamics

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Aurora, Colorado, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Hardware Support, Information Technology (IT) Infrastructure, Technical Support, Troubleshooting Certifications: None Experience: 0 + years of related experience ship Required: Yes Job Description: Transform technology into opportun
Posted 60+ days ago | Updated 4 hours ago

Systems Integration and Test Engineer Lead (Level 5)

Lockheed Martin Corporation

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Littleton, Colorado, USA

Full-time

Job Description The coolest jobs on this planet or any other are with Lockheed Martin Space OVERVIEW: As we enter a new era of Strategic Weapon Systems, Lockheed Martin is a pioneer, partner, innovator and builder. Our amazing people are on a mission to make a difference in the world and every single day we use our unique skills, talents and experiences to design and build solutions to some of the world's hardest engineering problems. Do you want to be part of a culture that inspires employees
Posted 22 days ago | Updated 4 hours ago