CNO Developer Intern

General Information

Requisition # R63572 Locations USA-TX-San Antonio Posting Date 10/01/2025 Security Clearance Required None Remote Type Onsite Time Type Part time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks Computer Network Operations (CNO) Developer Interns to design and develop technologies to defend, attack and exploit networks in defense of our most critical systems. Our Summer internship locations include Herndon VA, Hanover MD, Aurora Colorado and San Antonio, TX. Hybrid options may be available.

Candidates must be US Citizens with an active US Security Clearance or US Citizens eligible to obtain a Security clearance.  

Responsibilities include, but are not limited to:

• Expanding your skills in Low-Level Programming, Hacking, Reverse Engineering, Capability/Tool Development, Embedded Development, Security Research, Penetration Testing and Networking
• Leveraging your experience with Python ,C, C++ and Assembly coding to develop mission-critical software
• Supporting a prestigious  national security program held by ManTech for over 15 years in a collaborative, supportive environment
• Participating in guided projects over the summer that can directly flow back to real contracts.

Required Qualifications:

• U.S. Citizen with an active US Security Clearance or eligible to obtain a US Security Clearance  
• Current full-time student pursuing a BS/MS in Computer Science, Computer Engineering or related field with a projected expected graduation date no earlier than December 2026. 
• Academic or professional experience in Low-Level Programming, Hacking, Reverse Engineering, Capability/Tool Development, Embedded Development, Security Research, Penetration Testing, and Networking
• Proficiency with one (or more) of the following languages: Python, C++, C, or Assembly
• Desire to work in a hands-on, coding-heavy role where the primary focus is to design and develop new bleeding edge software
• Ability to work on-site or in a hybrid format in Hanover MD, Herndon VA,  Aurora, CO or San Antonio TX

Desired Qualifications:

• Active/current TS/SCI with Polygraph clearance
• Networking (TCP/IP) and socket level programming
• Low-level internals in one or more technology areas (e.g. Windows, Unix, Mobile, Network devices)
• Assembly programming concepts (x86)
• Atlassian products (JIRA, Confluence, Crucible)
• Penetration testing and analysis, computer forensic analysis and data recovery, computer intrusion detection and analysis, computer incident response

Clearance Requirements:

• U.S. Citizen with an active US Security Clearance or eligible to obtain a US Security Clearance  

Physical Requirements:

• Must be able to be in a stationary position more than 50% of the time
• Must be able to communicate, converse, and exchange information with peers and senior personnel
• Must be able to consistently operate a computer and other office productivity machinery

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.