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 29 days ago
Similar jobs that could be interesting for youBased on the CNO Software Engineer Level 3 in Annapolis Junction, MD vacancy
  •  ...MANTECH seeks a highly technical and mission-focused Senior CNO Software Engineer to join our team in Hanover, MD or Aurora, CO....  ...troubleshooting and debugging complex systems Experience with low-level system internals across one or more platforms (e.g., Windows... 
    Suggested
    Work experience placement

    MANTECH

    Hanover, MD
    1 hour ago
  •  ...MANTECH seeks a skilled and mission-focused CNO Software Engineer to join our team in Hanover, MD or Aurora CO.. In this role, you will contribute to the development of advanced CNO capabilities that directly support national security. You’ll work in a collaborative... 
    Suggested

    MANTECH

    Hanover, MD
    1 hour 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... 
    Suggested
    Full time
    Work at office
    Flexible hours

    Set Of X

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

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

    Caci

    Jessup, MD
    a month 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... 
    Suggested

    MANTECH

    Hanover, MD
    1 hour 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
    1 hour ago
  • $125.79k - $238.64k

     ...technical knowledge for more junior engineers Interact directly with the...  ...with broader DAT, QC, CNO, and agency teams to identify...  ...experience on projects with similar software processes may be substituted...  ...including, but not limited to: level of position, complexity of job... 
    Level 3
    Contract work
    Work experience placement
    Local area

    IntelliGenesis

    Annapolis Junction, MD
    5 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
    29 days 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
    7 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...  ...Providing input to system and software design, including component-level development and integration ~ Supporting rapid-response... 
    Part time
    Immediate start

    Adaptic

    Annapolis Junction, MD
    29 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... 
    Immediate start

    General Dynamics Information Technology

    Annapolis Junction, MD
    more than 2 months ago
  • $140k - $230k

     ...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... 
    Level 3
    Full time
    Worldwide

    Altamira Technologies Corporation

    Columbia, MD
    a month ago
  •  ...AEITS, Inc. , a GTSC company, is growing its team! Seeking a Software Engineer Level 3 . Location: Annapolis Junction, MD All work is on-site. This is not a hybrid or remote position. Mission : Design, document and execute tests of FOSS, COTS and GOTS... 
    Level 3
    Full time
    Temporary work
    Local area

    Advantage Engineering, Inc.

    Columbia, MD
    a month ago
  •  ...GTSC seeks a   Software Engineer, Level 3 . Location:   Annapolis Junction, MD All work is on-site. This is not a hybrid or remote position.   Mission : Develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive... 
    Level 3
    Full time
    Flexible hours

    Gtsc-Talent Solutions

    Columbia, MD
    18 days ago
  • $170k - $260k

     ...do not apply if you currently do not possess this level of clearance.*** Are you a Senior Software Engineer who is ready for a new challenge that will launch your...  ...customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions... 
    16 hours
    Full time
    Contract work
    Remote work
    Work from home
    Relocation package

    Gliacell Technologies

    Laurel, MD
    more than 2 months 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 Llc

    Columbia, MD
    more than 2 months ago
  •  ...AEITS, Inc. , a GTSC company, is growing its team! Seeking a Software Engineer, Level 3 . Location: Annapolis Junction, MD All work is on-site. This is not a hybrid or remote position. Mission : Implementation of the MOAT system in Java/Python using... 
    Level 3
    Full time
    Temporary work
    Local area

    Advantage Engineering, Inc.

    Annapolis Junction, MD
    more than 2 months ago
  •  ...Description Job Description Job Description We are looking for a CNO Developer with 10+ years' experience to fill a vacant...  ...network protocols, SSL security layers  • Experience with Reverse Engineering for debugging , Desired Skills - Experience with Python... 
    Temporary work
    Local area

    vetegrity

    Maryland, MD
    a month 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
  •  ...Description Job Description Senior Software Developer Software Developer, Level 2 (SD2) ·         Six (6) years of...  ...and build environments for CNO tools   Principal Software Developer Software Developer, Level 3 (SD3) Eight (8) years of experience... 
    Level 3

    Advanced Computer and Network Concepts, L.L.C.

    Maryland, MD
    a month ago
  •  ...highly technical and mission-focused CNO Software Developer to join our team in Columbia...  ...that align with P.I. goals. Security Engineering Oversight: Serve as the Subject Matter...  ...excellence by mentoring junior staff in low-level debugging, reverse engineering, and... 
    Work experience placement

    ManTech

    Columbia, MD
    1 day 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
    Full time

    Ops Tech Alliance

    Maryland, MD
    13 days ago
  •  ...motivated, career and customer-oriented Senior Software Engineer in the Fort Meade, MD area . This is...  ...Bachelor's degree, DoD 8570.01-m IAT Level II Certification and 9 years of position...  ...research and reverse engineering with CNO development. Knowledge in... 
    Work experience placement
    Work at office

    ManTech

    Annapolis Junction, MD
    13 hours ago
  •  ...Job Description Job Description 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... 
    Level 3

    Independent Software

    Annapolis Junction, MD
    5 days ago
  •  ...motivated, career and customer-oriented CNO Developer to join our team in...  ...progressively responsible experience. ~3+ years software development experience, preferably in offensive...  ...s Degree in Computer Science, Software Engineering, or related technical field (or... 
    Work at office

    MANTECH

    Annapolis Junction, MD
    1 hour ago
  •  ...Job Description Job Description What You Will Do: As a Software Engineer Level 2 or Level 3 at Independent Software, you will support the modernization of a mission-critical Java application as it evolves from a traditional monolithic architecture to a cloud-ready... 
    Level 3

    Independent Software

    Maryland, MD
    a month ago
  •  ...Job Description Job Description What You Will Do: At Independent Software, as a Software Engineer Level 3, you will design, develop, maintain, and enhance complex software systems supporting mission-critical operations and advanced technical environments. You will... 
    Level 3

    Independent Software

    Annapolis Junction, MD
    5 days ago
  •  ...What You Will Do At Independent Software, as a DevOps Software Engineer Level 3, you will support the development, deployment, and administration of complex mission-critical systems. This highly customer-facing role combines software engineering, DevOps, Kubernetes... 
    Level 3
    Full time

    Independent Software

    Maryland, MD
    a month ago
  •  ...maintains, and enhances complex and diverse software systems (e.g., processing-intensive...  ...requirements analysis and synthesis from system level to individual software components....  ...standards, confer with users or system engineers; analyze systems flow, data usage and work... 
    Level 3
    Contract work
    Work experience placement
    Local area

    IntelliGenesis

    Annapolis Junction, MD
    24 days ago
  •  ...Poly 9 years of experience with STEM Bachelor's Degree  The Software Engineer shall be responsible for developing, sustaining, and...  ...Experience developing scripts using Bash Recent Python (3.x) software development experience Experience with Rust programming... 
    Level 3
    Full time
    Temporary work
    Immediate start
    Relocation package
    Flexible hours

    CTRL + LLC

    Annapolis Junction, 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!