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

CNO Software Engineer Level 3

Full-time

Adaptic

Build the Tools Behind the Mission: Join us as a  CNO Software Engineer! 

Don't just write code—build the capabilities that power Computer Network Operations. Supporting the DoD and Intelligence Community, you'll work alongside Red, Blue, and Hunt teams to develop, enhance, and sustain tools used to detect, analyze, and defend against evolving threats. 

This role is ideal for highly experienced engineers who lead from the front—driving architecture, guiding teams, and influencing how mission-critical capabilities are designed, built, and sustained. 

Your Impact  

You'll lead the design and development of complex cybersecurity tools and mission systems—balancing hands-on expertise with technical leadership across teams and efforts. Day-to-day, that can look like: 

  • Architecting, developing, and enhancing complex and diverse software systems supporting mission requirements
  • Leading system and software design decisions, including architecture, trade-offs, scalability, and integration
  • Collaborating with Red, Blue, and Hunt teams to define and evolve advanced cyber capabilities
  • Providing technical leadership across development efforts, ensuring alignment with mission needs and best practices
  • Troubleshooting and resolving complex system-level issues across distributed environments
  • Driving DevOps and CI/CD strategy to improve development velocity, reliability, and deployment efficiency
  • Working with large-scale and complex data sources (logs, binaries, network traffic) to support advanced analysis and tool development
  • Supporting both rapid-response (QRC) efforts and long-term capability development initiatives
  • Evaluating and integrating emerging technologies to maintain mission advantage
  • Mentoring engineers across levels and contributing to team growth, standards, and technical direction

Qualifications  

  • Active TS/SCI with polygraph
  • Twenty (20) years of experience as a Software Engineer on programs/contracts of similar scope, type, and complexity
  • Bachelor's degree in Computer Science or related discipline
  • Four (4) years of additional SWE experience may be substituted in lieu of a degree
  • At least two (2) years of experience developing applications using modern programming languages (e.g., C, C++, C#, Java, Python)
  • At least two (2) years of experience developing on Windows or UNIX/Linux systems
  • At least two (2) years of experience with DevOps tools and technologies (e.g., Docker, Terraform, Ansible, Packer, Artifactory)
  • At least one (1) year of experience with CI/CD pipelines and tools (e.g., Jenkins, Bamboo)
  • At least two (2) years of experience with cybersecurity tools or techniques, such as reverse engineering, vulnerability research, or MITRE ATT&CK

Nice to Have  

  • Experience leading large or complex technical efforts across teams or programs
  • Deep understanding of cybersecurity concepts, threat detection, and adversary techniques
  • Experience supporting Red Team, Blue Team, or Hunt operations
  • Experience analyzing binaries, memory, logs, or network traffic at scale
  • Background in scalable system architecture, automation, or cloud-based environments
  • Experience working in IC or DoD mission environments 

Vacancy posted 22 days ago
Similar jobs that could be interesting for youBased on the CNO Software Engineer Level 3 in Annapolis Junction, MD vacancy
  •  ...The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g...  ...requirements analysis and synthesis from system level to individual software components....  .... Five (5) years of experience in CNO environment Five (5) years of experience... 
    Level 3
    Full time
    Temporary work

    Avalore, Llc

    Annapolis Junction, MD
    14 hours ago
  • $112.8k - $257k

    CNO Software EngineerThe Opportunity: As a computer network operations (CNO) specialist, you know that embedded and application developers, reverse engineers, and vulnerability analysts all play key roles in the CNO capability development lifecycle. We’re looking for someone... 
    Suggested
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work
    Flexible hours

    Booz Allen Hamilton

    Annapolis Junction, MD
    3 days ago
  • $206.55k - $279.45k

     ...of Requisition: Regular Clearance Level Must Be Able to Obtain: Top Secret SCI...  .../Other Required: None Job Family: Software Engineering Skills: Embedded C++,IEEE 802.11,...  ...capabilities! What you will be doing: A CNO Software Engineer researches, analyzes,... 
    Suggested
    Temporary work
    Immediate start
    Worldwide
    Flexible hours

    General Dynamics Information Technology

    Annapolis Junction, MD
    3 days ago
  •  ...Job Description Job Description Software Engineer Praxis Engineering creates exciting and...  ...capabilities! What you will be doing: A CNO Software Engineer researches, analyzes,...  ...protocols a plus Security clearance level: Active TS/SCI with Polygraph required... 
    Suggested
    Immediate start

    General Dynamics Information Technology

    Annapolis Junction, MD
    more than 2 months ago
  •  ...Build the Tools Behind the Mission: Join us as a  CNO Software Engineer!  Don't just write code—build the capabilities that power Computer...  ...Providing input to system and software design, including component-level development and integration ~ Supporting rapid-response... 
    Suggested
    Part time
    Immediate start

    Adaptic

    Annapolis Junction, MD
    more than 2 months ago
  • $120k - $247k

     ...great work, the Set of X team is building an elite group of engineers with a strong sense of shared responsibility and ownership...  ...__________________________________________________ This CNO Focused Sr. Software Engineer will be supporting analysts and operators in... 
    Full time
    Work at office
    Flexible hours

    Set of X

    Annapolis Junction, MD
    18 days ago
  •  ...Build the Tools Behind the Mission: Join us as a  CNO Software Engineer!  Don't just write code—build the capabilities that power Computer Network Operations. Supporting the DoD and Intelligence Community, you'll work alongside Red, Blue, and Hunt teams to develop, enhance... 
    Full time

    Adaptic

    Annapolis Junction, MD
    more than 2 months ago
  • $112.5k - $150k

    A defense technology company is seeking a CNO Developer in Jessup, Maryland. This role involves designing and developing low-level software tools for Computer Network Operations, focusing on cyber capabilities. Candidates should have a degree in Computer Science or relevant... 

    AeroVironment, Inc.

    Jessup, MD
    1 day ago
  •  ...What You Will Do: As a Software Engineer (SWE) Level 3, you will design, develop, integrate, and enhance complex and diverse software systems in support of mission-critical programs. You will work independently and as part of a collaborative engineering team to deliver... 
    Level 3
    Full time

    Independent Software

    Annapolis Junction, MD
    14 hours ago
  • $210k - $215k

     ...Job Description: The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive...  ...development, and requirements analysis and synthesis from system level to individual software components. Required Skills:... 
    Level 3
    Full time
    Contract work
    Work experience placement
    Local area

    Intelligenesis

    Annapolis Junction, MD
    14 hours ago
  •  ...Description Software Engineer Levels 1 - 3 - TS/SCI/FS Poly clearance only Altamira Technologies has a long and successful history of providing innovative solutions throughout the U.S. National Security community. Headquartered in McLean, Virginia, Altamira serves... 
    Level 3
    Full time
    Worldwide

    Altamira Technologies

    Annapolis Junction, MD
    14 hours ago
  • $70k - $190k

     ...Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021!   Belay Technologies is seeking a Software Engineer (SWE) level 2/3, to support our intel team. Candidates should have the following qualifications:   TS/SCI with polygraph... 
    Level 3
    Full time
    Contract work
    Work experience placement
    Flexible hours

    Belay Technologies

    Annapolis Junction, MD
    14 hours ago
  • $125k - $240k

     ...The Kenjya-Trusant Group is looking for a Software Engineer to support our Maryland Customer in the...  ...analysis and synthesis from system level to individual software components. Analyze...  ...ROXY and RHEL 9 experience. Level 3: High School diploma with twenty-four... 
    Level 3
    Full time
    Contract work
    Work experience placement
    Local area
    Flexible hours

    The Kenjya-trusant Group

    Annapolis Junction, MD
    14 hours ago
  • $190k - $240k

     ...finalist in 2021!   Belay Technologies is seeking a Senior Software Engineer to join our Intel team. This CNO-focused Senior Software Engineer will support analysts...  ...: ~8 weeks paid leave - 4 weeks of personal leave, 3 Yay! days, take off on your birthday,11 paid holidays... 
    Full time
    Contract work
    Work experience placement
    Flexible hours

    Belay Technologies

    Columbia, MD
    14 hours ago
  •  ...MANTECH seeks a highly technical and mission-focused Senior CNO Software Engineer to join our team in Hanover, MD.   In this role, you...  ...troubleshooting and debugging complex systems Experience with low-level system internals across one or more platforms (e.g., Windows... 
    Work experience placement

    MANTECH

    Hanover, MD
    14 hours ago
  •  ...do great work, the Set of X team is building an elite group of engineers with a strong sense of shared responsibility and ownership...  ..._________________________________________________ Are you a software engineer with a passion for cybersecurity and a clearance? Do... 
    Full time
    Work at office
    Flexible hours

    Set Of X

    Annapolis Junction, MD
    14 hours ago
  •  ...Software Engineer (SWE) Level 3: Seeking a Linux-focused Software Engineer with strong Python/Java development and Linux administration experience (RHEL, Ubuntu, Rocky, CentOS) to implement, integrate, automate, and sustain Delinea privileged access and secrets management... 
    Level 3

    Mangrum Career Solutions LLC

    Annapolis Junction, MD
    more than 2 months ago
  • $190k - $240k

     ...1!   Belay Technologies is seeking a Software Engineer (Automated Test Framework) to join our intel...  ...paid leave - 4 weeks of personal leave, 3 Yay! days, take off on your birthday,11...  ...career development. Salary Range: Levels 1 and 2: $70,000 to $190,000 Level 3:... 
    Level 3
    Full time
    Contract work
    Work experience placement
    Flexible hours

    Belay Technologies

    Annapolis Junction, MD
    14 hours ago
  • $3,000 per month

     ...eligible for a $25K sign on bonus for external hires! Cyber Software Engineer Stf - SIGNAL SWE WHAT WE‘RE DOING Lockheed Martin,...  ...work (SOW) Appendix B for the USG standard SWE labor category level 3. ***You must possess the requisite security clearance and... 
    Level 3
    Relocation package

    Lockheed Martin

    Laurel, MD
    3 days ago
  •  ...Job Responsibilities: Software Development, Software Engineering background, with a track record of successful project delivery. Recent Software Development experience in C#, Angular and Blazor. Experience with Scaled Agile development methodologies, with excellent... 
    Level 3

    SGS Consulting

    Maryland, MD
    more than 2 months ago
  • $103.8k - $218.1k

    Job Title: Software Engineer Skill Level 1Job Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee...  ...of designRequired: • An active TS/SCI w/Poly• IAT Level 3 Certification.• Familiarity with Docker and... 
    Level 3
    Contract work
    For contractors
    Work experience placement
    Flexible hours

    CACI International

    Annapolis Junction, MD
    2 days ago
  •  ...State of Possible,” please apply today!The Software Engineer designs, develops, tests, deploys,...  ...requirements analysis and synthesis from system level to individual software components....  ...and Web Services implementation.The Level 3 Software Engineer (SWE) possess the... 
    Level 3
    Contract work
    Flexible hours

    ProSync Technology Group

    Annapolis Junction, MD
    3 days ago
  • $190k - $240k

     ...1!   Belay Technologies is seeking a Software Engineer to join our intel team. DevOps is an agile...  ...paid leave - 4 weeks of personal leave, 3 Yay! days, take off on your birthday,11...  ...career development. Salary Range: Levels 2: $70,000 to $190,000 Level 3: $190,0... 
    Level 3
    Full time
    Contract work
    Work experience placement
    Flexible hours

    Belay Technologies

    Annapolis Junction, MD
    14 hours ago
  •  ...MANTECH seeks a skilled and mission-focused CNO Python Software Engineer to join our team in Hanover, MD.   In this role you will be...  ...skills Proficiency with networking (TCP/IP) and socket level programming. Experience with SQL and NoSQL databases... 

    MANTECH

    Hanover, MD
    14 hours ago
  •  ...MANTECH seeks a motivated, career- and customer-oriented CNO Python Software Engineer to join our team in Hanover, MD. This position supports...  ...Experience with networking (TCP/IP) and socket level programming Experience programming using agile software... 

    MANTECH

    Hanover, MD
    14 hours ago
  •  ...Inc. \ , a GTSC company, is growing its team! Seeking a \ CNO Expert Software Engineer \ to support our customer in the Fort Meade , MD \\ area....  ...systems. \\ Experience with networking (TCP/IP) and socket -level programming. \\ Experience managing or leading... 
    Full time
    Temporary work
    Work experience placement
    Work at office
    Local area

    Gtsc-Talent Solutions

    Hanover, MD
    14 hours ago
  •  ...Software Engineer Opportunity We are on several winning teams...Come join us! Our work environment...  ...for the best and brightest senior level software engineers having 20 or more years...  ...Forensics/Memory Forensics Experience in CNO or CNO development Programming... 
    Level 3
    Immediate start
    Remote work

    DUIT

    Columbia, MD
    3 days ago
  • $215k - $237k

     ...Most At Intelliforce, we’re looking for mission-driven engineers ready to tackle cutting-edge challenges in high-performance...  ...and artificial intelligence. We are currently seeking a Software Engineer Level 3 to support the design, development, and deployment of a Retrieval... 
    Level 3
    Full time
    Immediate start

    Intelliforce-it Solutions Group

    Annapolis Junction, MD
    14 hours ago
  • $169k - $265.6k

     ...Grumman brings informed insights and software-secure technology to enable...  ...like you to join our team as a Staff CNO Cyber Protection Reverse Engineer. Places of performance for this position...  ...presentations on assigned projects.The Level 3 CNO Reverse Engineer shall possess... 
    Level 3
    Full time
    Relocation
    Shift work

    Northrop Grumman

    Annapolis Junction, MD
    4 days ago
  • $195k - $230k

     ...Software Engineer- Level 3 TS/SCI & Full Scope Poly Required Salary Range: $195,000 - $230,000 per year Ops Tech Alliance (OTA) is seeking highly qualified Software Engineers to develop, maintain, and enhance complex and diverse software systems. Our engineers... 
    Level 3

    Ops Tech Alliance

    Maryland, MD
    more than 2 months ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to CNO Software Engineer Level 3. Be the first to apply!