Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Security Engineer II, DCO Engineer (TS/SCI, Onsite)

$88.6k - $147.6k

Deloitte LLP

Our Deloitte Cyber team understands the unique challenges and opportunities businesses face in cybersecurity. Join our team to deliver powerful solutions to help our clients navigate the ever-changing threat landscape. Through powerful solutions and managed services that simplify complexity, we enable our clients to operate with resilience, grow with confidence, and proactively manage to secure success.

Recruiting for this role ends on June 19th, 2026.

Work You'll Do

  • Require a Defensive Cyber Operations (DCO) SME with a desire to actively defend the mission systems critical to our national defense. As an engineer the candidate will lead individuals towards common goals and work with engineers to apply extensive expertise on multiple complex work assignments.
  • Assignments may be broad in nature, requiring originality and innovation in determining how to accomplish tasks.
  • Leads the development of DCO methodologies and presents solutions to problems. Contributes to deliverables and performance metrics where applicable.
  • Consults on IT and cyber defensive architecture and technologies.
  • Assesses assigned cyber key terrain to thoroughly understand the mission, architecture and associated threat.
  • Advises on technical design and implementation of DCO capabilities required to effectively protect, detect and respond to cyber threats and attacks.
  • Researches cyber defense technologies for best fit based on mission, architecture and current threat.
  • Leads the design, implementation, configuration and/or tuning of cyber defensive technology.
  • Authors documentation to include SOPs, checklists, implementation guides, architecture diagrams, crew binders, etc. to support DCO. Adapts technologies to meet the mission architecture and threat.
A successful candidate would possess these skills:
  • Ability to work independently and collaborate as part of a team
  • Effective written and verbal communication skills
  • Meticulous attention to detail and quality of work product
  • Ability to build and sustain professional relationships
  • Ability to lead projects or workstreams
  • Ability to manage and prioritize multiple tasks in a fast-paced and dynamic environment
  • Strong interpersonal skills and professional demeanor
  • Ability to meet deadlines
  • Ability to provide clear guidance to others

The Team

Deloitte's Government & Public Services (GPS) practice - our people, ideas, technology and outcomes - is designed for impact. Serving federal, state, & local government clients as well as public higher education institutions, our team of professionals brings fresh perspective to help clients anticipate disruption, reimagine the possible, and fulfill their mission promise.

Our Enterprise Security offering embeds security in all aspects of digital transformation by securing a client's technical backbone while enabling secure digital transformation. Includes security architecture, secure development and deployment, end-to-end cyber cloud capabilities, application security, and security for emerging technologies and connected products.

The Project Delivery Talent Model is designed for professionals with specialized skills that align to a current client need. Team members focus on delivering services to clients, without additional expectations related to business development or promotion. Their employment is tied to their role on a project, and they are eligible for a benefits package that is competitive for project delivery-focused professionals.

Qualifications

Required :
  • Bachelor's degree.
  • Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.
  • Active TS/SCI clearance.
  • Ability to work onsite in Aurora, CO.
  • 5 years of technical experience in cyber-defense or cyber security related fields (e.g., engineering, networking, systems integration, solutions etc.).
  • Experience years must come from at least 2 of the following areas:
    • Container or virtual environments (e.g. Docker, Kubernetes, VMware, AWS)
    • In-band and out-of-band test access points for network traffic collection and aggregation (e.g. Gigamon)
    • Data storage solutions (e.g. NFS storage, distributed storage, Ceph Ruck storage, etc.) -Data-analysis toolsets (e.g. Elastic Search, Logstash, Kibana, Splunk, etc.)
    • Agile frameworks for software development, -Linux operating systems (Red Hat, Kali, etc.)
    • Windows operating systems
    • Network infrastructure
    • Security applications (Security Orchestration, Automation, and Response [SOAR], Security Information and Events Management [SIEM], Intrusion Detection Systems [IDS], etc.)

The wage range for this role takes into account the wide range of factors that are considered in making compensation decisions including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs. The disclosed range estimate has not been adjusted for the applicable geographic differential associated with the location at which the position may be filled. At Deloitte, it is not typical for an individual to be hired at or near the top of the range for their role and compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range is $88,600 to $147,600.

You may also be eligible to participate in a discretionary annual incentive program, subject to the rules governing the program, whereby an award, if any, depends on various factors, including, without limitation, individual and organizational performance.
Vacancy posted 1 day ago
Similar jobs that could be interesting for youBased on the Security Engineer II, DCO Engineer (TS/SCI, Onsite) in Colorado vacancy
  • $89.3k - $157.55k

    Lockheed Martin in Littleton, Colorado, is seeking a Test Engineer to develop and review test artifacts and oversee...  ...in a high-level scripting language, and TS/SCI clearance. This full-time role requires onsite work, offering a competitive salary range of $89,30... 
    Suggested
    Full time

    Lockheed Martin

    Littleton, CO
    1 day ago
  •  ...Aurora, Colorado is seeking a Senior Systems Engineer to manage integration and test processes for advanced...  ...years of relevant experience. The position is onsite and requires U.S. citizenship along with an active TS/SCI security clearance. Key responsibilities include... 
    Suggested

    Prattwhitney

    Aurora, CO
    2 days ago
  • Isys Technologies is seeking a DCO Engineer to join our team in Aurora, Colorado. This on-site position focuses on cyber defense operations and requires an active Top Secret clearance with SCI eligibility. The ideal candidate will lead assessments of mission architecture... 
    Suggested

    Isys Technologies

    Aurora, CO
    4 days ago
  •  ...Technologies in Aurora, Colorado, is seeking a Senior Software Engineer to support U.S. Government missions. This full-time role involves...  ...to government contracts. Qualified candidates should possess a TS/SCI clearance and have 14+ years of software engineering experience... 
    Suggested
    Remote job
    Full time

    GliaCell Technologies LLC

    Aurora, CO
    2 days ago
  • Bright Vision Technologies is seeking a Systems Integration/Test Engineer to support mission-critical geospatial data solutions for the...  ...compliance with industry standards. Candidates must have an active TS/SCI clearance with CI Poly. #J-18808-Ljbffr Creative Solutions... 
    Suggested

    Creative Solutions Services, LLC

    Denver, CO
    1 day ago
  • Prattwhitney in Aurora, CO, seeks a Principal Systems Engineer to manage software installations and maintain operational environments...  ...in STEM, at least 8 years of experience, and holds an active TS/SCI security clearance. Benefits include competitive salary, medical,... 

    Prattwhitney

    Aurora, CO
    16 hours ago
  • Leidos is seeking a Systems Engineer in Denver, Colorado to support an IT contract requiring a TS/SCI clearance with polygraph. This role involves analyzing client needs and providing maintenance and troubleshooting for existing systems. The ideal candidate will have a... 
    Contract work

    Dormont Manufacturing Co

    Denver, CO
    1 day ago
  • $130k - $240k

     ...Job Posting We seek passionate engineering talent in the digital signal processing space...  ...to Sensitive Compartmented Information (TS/SCI). An active TS SCI within the past 2 years...  ...Midas a definite plus. Locations are onsite: Northern Virginia, Sarasota FL,... 
    Relocation package

    Steinman Recruiting Associates

    Colorado Springs, CO
    2 days ago
  • $80.1k - $125.8k

     ...Corp. (JP) in Aurora, CO is seeking an Associate Cyber Software Engineer to design and develop CNO tools and applications. Candidates...  ...have experience in programming languages like Python or C/C++. TS/SCI with Polygraph clearance is required for the role. The position... 
    Flexible hours

    Northrop Grumman

    Aurora, CO
    4 days ago
  •  ...responded to in 24 hours or less Onsite in Aurora, CO Employment type...  ...etc... Principal Systems Engineer to work in a collaborative,...  ...transferable U.S. government issued TS/SCI is required prior to start...  ...citizens are eligible for a security clearance. #J-18808-Ljbffr... 
    Full time
    Contract work

    Associates Systems LLC

    Aurora, CO
    4 days ago
  •  ...leading technology solutions provider is seeking candidates for an on-site role in Aurora, Colorado. The position requires active TS/SCI clearance and involvement in cutting-edge ground systems solutions. Candidates should have a Bachelor’s in STEM and a minimum of 2... 

    Associates Systems LLC

    Aurora, CO
    1 day ago
  •  ...technical resources company in Aurora, CO is seeking a skilled Linux Engineer to design, implement, and maintain Linux systems....  ...proficiency, and understanding of virtualization technologies. An active TS/SCI with CI Poly clearance is required. This role offers... 

    Arena Technical Resources

    Aurora, CO
    16 hours ago
  • Itec, based in Aurora, Colorado, is seeking a Network Engineer with a TS/SCI clearance. The role involves configuring and supporting network systems, performing upgrades, and providing technical support. Ideal candidates will have experience with Windows 7 & 2008, Cisco... 

    Itec

    Aurora, CO
    10 days ago
  • $125k - $190k

     ...solutions to support the national security space enterprise. Built on...  ...position is for a Staff Systems Engineer. You will be working closely...  ...Required Qualifications Active TS/SCI U.S. Government Security...  ...Methodology Current IAT Level II or III certification (i.e. Security+... 
    Temporary work
    Work at office
    Visa sponsorship
    Relocation package
    Flexible hours

    TSG

    Aurora, CO
    2 days ago
  • $68.9k - $131.1k

     ...with advanced software technologies. A Bachelor’s degree in STEM is required, along with experience in C++ and Java, and an active TS/SCI clearance. Competitive salary range between $68,900 and $131,100 USD, along with comprehensive benefits including medical, dental,... 

    Prattwhitney

    Aurora, CO
    2 days ago
  • $89.3k - $157.55k

     ...Martin, is dedicated to engineering, developing, and...  ...Testing, Cyber Security, and enhancing critical...  ...DoD Final TS Security Clearance...  ...certification at IAT Level II or higher (Security+...  ...with an MDA based SCI is a plus Experience...  ...to Work Remotely: Onsite Full-time: The work... 
    Full time
    Temporary work
    Work experience placement
    Work at office
    Remote work
    Relocation
    Flexible hours
    Shift work
    3 days per week

    Lockheed Martin - US

    Colorado Springs, CO
    8 days ago
  • $160k - $200k

    Carlsbad Tech in Aurora, CO is seeking a Network Engineer/Systems Administrator with at least 5 years of experience. Candidates must have a Bachelor's degree in a related field and an active TS/SCI security clearance. The role involves maintaining and troubleshooting network... 

    Carlsbad Tech

    Aurora, CO
    1 day ago
  • $103.6k - $155.4k

     ...Space Network / Communications Systems Engineer to work onsite at Schriever SFB, near Colorado...  ...operations or other similar systems Top Secret SCI with a CI Polygraph Preferred...  ...knowledge of Windows and Unix environments Security + or another DoD 8570 approved certification... 
    Full time
    Internship
    Work at office
    Worldwide
    Relocation
    Shift work

    Northrop Grumman

    Colorado
    1 day ago
  •  ...The TEMPEST Security Specialist assists the Certified TEMPEST Technical...  ...contractor facilities where SCI is electronically processed meet...  ...cost effectively. The TEMPEST engineer will product TSS deliverables....  .... Security Clearance Level: TS/SCI w/Polygraph Preferred Skills... 
    For contractors
    Work at office

    General Dynamics Information Technology

    Aurora, CO
    2 days ago
  • $83.4k - $155.4k

    Northrop Grumman is seeking a Network Engineer (Level 2 or 3) in Aurora, CO. The role involves designing network communication...  ...’s with some experience. Candidates must also be Security+ certified and possess an active TS/SCI with full-scope polygraph. Salary ranges from $83,400... 

    Northrop Grumman

    Aurora, CO
    16 hours ago
  • Sev1Tech LLC is looking for a Principal Network Engineer based in Denver, CO to support the US Space Force meshONE-T program. The ideal...  ...of experience in network engineering and be eligible for a TS/SCI security clearance. The position requires at least 4 days per week on-... 

    Sev1Tech

    Denver, CO
    1 day ago
  • Lockheed Martin in Littleton, CO, seeks a Systems Engineering IT Associate Manager to oversee classified IT operations...  ..., along with a Bachelor's degree in engineering or IT and active TS/SCI clearance. The position is full-time and onsite. #J-18808-Ljbffr Lockheed Martin
    Full time

    Lockheed Martin

    Littleton, CO
    1 day ago
  • A federal consulting company in Aurora, CO, is seeking a skilled System Security Engineer. The successful candidate will design secure systems, monitor incidents, conduct risk assessments, and ensure compliance with security standards. A strong background in operating system... 
    Flexible hours

    Cymertek

    Aurora, CO
    1 day ago
  • $82.7k - $173.9k

    Dormont Manufacturing Co is seeking a Network Engineer III in Denver to support and maintain WAN, LAN, and CAN networks for an Intelligence...  ...8 years of network engineering experience and an active TS/SCI security clearance. This role requires expertise in network... 

    Dormont Manufacturing Company

    Denver, CO
    1 day ago
  • $68.9k - $131.1k

    Location and Role Requirements Onsite position in Aurora, CO. U.S. citizenship required. Active, transferable Top Secret / TS/SCI clearance required prior to start date. What You...  ...satellite ground systems. Work with teams of engineers, architects, and leaders in an Agile... 
    Temporary work
    Relocation package
    Flexible hours

    Prattwhitney

    Aurora, CO
    2 days ago
  • A leading technology contractor is seeking a Senior Systems Engineer in Denver, CO. In this role, you will support critical U.S. Government...  ...relevant field, at least 7 years of experience, and an active TS/SCI clearance. CACI emphasizes integrity, innovation, and... 
    For contractors

    CACI International Inc

    Denver, CO
    2 days ago
  • $68.9k - $131.1k

     ...BLDG S75) Position Role Type Onsite What You Will Do Design, develop...  ...Work with talented teams of engineers, architects, and leaders in...  ...Secret U.S. government‑issued security clearance required prior to...  ...date with ability to obtain TS/SCI without polygraph prior to start... 
    Temporary work
    Relocation
    Relocation package
    Flexible hours

    SwiftCruit

    Aurora, CO
    3 days ago
  • $169.3k - $232.2k

     ...looking for a Principal Splunk Engineer, who operates independently...  ...of Associate, Level I, Level II, and Senior Engineers in their...  ...standards. What we’re looking for: TS/SCI with a CI Poly required....  ...cyber and broader objectives to secure today's business and fortify it... 
    Full time
    Work experience placement
    Local area
    Remote work
    Work from home

    Optiv

    Colorado
    1 day ago
  • $165k - $185k

     ...leading defense contractor in Colorado is seeking a Chief Operations Engineer to support the Future Operationally Resilient Ground Evolution...  ...with at least 8 years of relevant experience and work within a TS/SCI classified environment. Competitive salary ranges from $165 to... 
    For contractors

    Cape Henry Associates

    Aurora, CO
    1 day ago
  •  ...seeking a Junior Penetration Tester to support a government customer in Denver, Colorado. Candidates must have an active Top Secret/SCI clearance and preferably OSCP certification. The role involves performing vulnerability scanning, identifying vulnerabilities, and requires... 

    Cyber Defense Technologies

    Denver, CO
    1 day ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Security Engineer II, DCO Engineer (TS/SCI, Onsite). Be the first to apply!