Technology Jobs in O'Fallon, IL (Now Hiring) — 26 open

Why choose between doing meaningful work and having a fulfilling life? At MITRE, you can have both. That's because MITRE people are committed to tackling our nation's toughest challenges—and we're committed to the long-term well-being of our employees. MITRE is different from most technology companies. We are a not-for-profit corporation chartered to work for the public interest, with no commercial conflicts to influence what we do. The R&D centers we operate for the government create lasting impact in fields as diverse as cybersecurity, healthcare, aviation, defense, and enterprise transformation. We're making a difference every day—working for a safer, healthier, and more secure nation and world. Our workplace reflects our values. We offer competitive benefits, exceptional professional development opportunities for career growth, and a culture of innovation that embraces adaptability, collaboration, technical excellence, and people in partnership. If this sounds like the choice you want to make, then choose MITRE - and make a difference with us.

MITRE’s Secure Enterprise and Cloud Architectures Department (L523) in the Cyber Engineering Division provides subject matter expertise and consulting to Federal Government sponsors in enterprise-wide security architecture, with specific emphasis on cloud computing, zero trust architecture, 5G, and networking technologies. The department advances the state of cyber security while leveraging the functionality and cost efficiencies of advanced architectures and technologies.

The department is part of MITRE Technology & Engineering, driving mission impact by delivering nation-leading, differentiated capabilities to a rich set of consequential national programs across the six Federally Funded Research and Development Centers (FFRDCs) that MITRE leads. Our goal is to develop solutions and deliver outcomes for our sponsors, to ensure the security, health, and prosperity of the American public. MITRE Technology & Engineering applies the expertise of technical staff and subject matter experts across our programs by fostering and developing technical talent, stewarding technical depth, conceiving and executing research, and ensuring MITRE’s capabilities—people, methods, labs, platforms, and environments—remain on the leading edge.

Roles & Responsibilities:

• Develop and deliver innovative and secure architectures, solutions and strategies for enterprise IT and the cloud for government customers
• Collaborate with senior government officials, providing technical and strategic advice to cyber challenges identified by the government
• Apply knowledge of network architectures, security technologies, zero trust and cyber threats to provide customers the ability to protect, detect, and respond to cyber-attacks directed against customer systems
• Leverage your vision and expertise to advance the state of the art in the use of AI/ML and zero trust to improve the security posture of government systems.

Basic Qualifications:

• Typically requires minimum of 8 years of experience with a Bachelor’s degree; 6 years of experience with a Master’s degree; or 3 years of experience with a PhD; or an equivalent combination of related education and work experience
• Advanced ability to architect secure solutions at the enterprise level and to apply zero trust principles to the architecture of complex systems
• Expertise applying security controls and best practices for network security, identity and access management, application security, data protection, and endpoint security
• Knowledge of security logging, telemetry, analytics, and orchestration technologies and their application within enterprise security architectures and zero trust
• Experience creating security reference architectures, standards, and design patterns for enterprise use
• Familiarity with emerging security technologies and patterns
• Strong knowledge of common attack techniques and threat landscapes
• Experience with cybersecurity technologies and tools, trends, and emerging capabilities
• Ability to lead and work with others to solve challenging technical problems
• Strong verbal and written communication skills and the ability to communicate effectively with a variety of audiences to include government senior executives
• Ability to obtain and maintain a Top-Secret level security clearance
• Per the U.S. Government’s eligibility requirements, you must be a U.S Citizen to be considered for a security clearance.
• This position requires a minimum of 50% hybrid on-site

Preferred Qualifications:

• U.S. Government security clearance
• Relevant professional certifications
• Understanding of security architecture frameworks and methodologies
• Experience conducting or consuming threat modeling and translating results into design requirements
• Experience with U.S. Government policy guidance, including NIST RMF, NIST CSF, DoD 8500, CNSSI Instructions, Cybersecurity Executive Orders, NIST SP 800 Series instructions, and NISPOM
• Experience with implementing or managing security incident and event management (SIEM) tools and security data lakes

This requisition requires the candidate to have a minimum of the following clearance(s):

None

This requisition requires the hired candidate to have or obtain, within one year from the date of hire, the following clearance(s):

Top Secret

Salary compensation range and midpoint:

$158,800 - $198,500 - $238,200 Annual

Work Location Type:

Hybrid

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local or international law.

MITRE intends to maintain a website that is fully accessible to all individuals. If you are unable to search or apply for jobs and would like to request a reasonable accommodation for any part of MITRE’s employment process, please email [email protected] for general support and [email protected] for intern positions. This service is for individuals requiring reasonable accommodation requests. Please note that vendor solicitations will not receive a reply.

Benefits information may be found here.

Copyright © 1997-2026, The MITRE Corporation. All rights reserved. MITRE is a registered trademark of The MITRE Corporation. Material on this site may be copied and distributed with permission only.