Job Information

ManTech CNO Developer in San Antonio, Texas

Secure our Nation, Ignite your Future

ManTech is a leading provider of technology solutions and services to U.S. defense, intelligence, and federal civilian agencies. With over 53 years of experience, we specialize in delivering comprehensive cyber, data collection and analytics, enterprise IT, systems engineering, and software application development solutions that support national and homeland security.

We are currently looking for a talented Software CNO Developer to join our team. In this role, you will support our Sponsor in developing a cross-domain data transfer and system integration solution. Your focus will be on all aspects of the product development life cycle, including creating, implementing, and supporting new features and capabilities in a platform as a service (PaaS) application. You will also be responsible for enhancing data processing methods to ensure the highest levels of information system security. If required, you may need to travel to customer sites within the continental US, and you will be expected to provide exceptional customer service in high-pressure situations.


  • Develop and maintain a strong understanding of the customer's requirements for the team product and how it functions within the larger ecosystem.

  • Gain knowledge of the project's policies, procedures, and change management plan.

  • Familiarize yourself with the technologies used by the team product and explore alternative implementations and solutions.

  • Create, implement, test, document, and support features, product capabilities, and data processing methods to ensure the highest levels of information system security.

  • Collaborate with Product Owner/Scrum Master, team leads, and other team members to meet or exceed customer requirements.

  • Perform maintenance tasks on existing products.

Basic Qualifications:

  • Bachelor's degree with 4+ years of relevant experience.

  • Proficiency in Python and C/C++ programming.

  • Experience in troubleshooting and debugging.

  • Strong networking (TCP/IP) and socket level programming skills.

  • Analytical and critical thinking abilities.

  • Experience in CNO capability development.

Preferred Qualifications:

  • Knowledge of software analysis and reverse engineering.

  • Familiarity with low-level internals in areas such as Windows, Unix, Mobile, or Network devices.

  • Experience in unit and/or system testing.

  • Proficiency in using Atlassian products (JIRA, Confluence, Crucible).

  • Open Source/Internet research skills.

  • Software development expertise in C, C++, and assembler (especially x86, ARM, MIPS, PowerPC).

  • Ability to reverse engineer software/firmware binaries using tools like Ghidra or IDA, and proficiency in using debuggers.

  • Exposure or willingness to learn hardware breakdown, soldering, board analysis, etc.

Security Requirements:

  • Ability to obtain or currently hold a TS/SCI Clearance.

If you are a highly motivated individual with the skills and experience, we are looking for, we encourage you to apply for this exciting opportunity. Join our team and contribute to the advancement of mission-critical technology solutions that make a difference in our nation's security.

For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability. To request an accommodation please click and provide your name and contact information.