TSSCI Senior Offensive Security Engineer

The MITRE Corporation; Bedford (MA); On-site; USD 129,000 - 194,000; Full time

Job summary

MITRE Corporation is seeking experienced cybersecurity professionals to advance adversary emulation, offensive security, and threat intelligence across national security programs. You will work on ATT&CK, Caldera, and related MITRE efforts, collaborating with government sponsors to improve cyber defense and research outcomes.

The role requires a strong background in red team operations, tool development, and clear, concise technical communication.

Qualifications

• Minimum 5 years with Bachelor’s; or 3 years with Master’s; or PhD with relevant experience.
• Experience creating/using offensive security tools, malware implants, red team capabilities in one or more languages.
• Demonstrated ability to deliver adversary emulation capabilities independently.
• Excellent written and oral communication, including presenting technical analyses.
• Active Top Secret/SCI with polygraph clearance; U.S. citizenship required.
• Requires minimum of 4 days on-site.

Responsibilities

• Build and emulate cutting-edge threat capabilities using adversary behavior knowledge.
• Advance cyber operations with AI, purple teaming, and CTI.
• Build products, perform R&D, and help sponsors solve CTI problems.
• Propose/lead research to improve cyber operations.
• Lead offensive security engagements to show blue teams how to respond to adversaries.
• Advance ATT&CK, Caldera, and MITRE efforts.

Skills

Adversary emulation

Offensive security

Programming

Written communication

Education

Bachelor’s degree

Master’s degree

PhD

Tools

Red team tooling

Malware implants

Job description

At MITRE, your passion fuels work that impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced technology organization working in the public interest. With objectivity and integrity at our core, we lead federally funded research and development centers for U.S. government agencies – collaborating with industry and academia to deliver integrated, high-impact solutions that advance our nation’s health, security, and prosperity. Our people tackle the toughest technical challenges, supported by competitive benefits, meaningful career development, and a culture of innovation, collaboration, and technical excellence. Choose MITRE for a career with purpose — and help shape the future.

Department Summary:

MITRE’s Cyber Threat Intelligence department is seeking isseekingcreative and passionate people who will advance the practice of adversary emulation, threat emulation, and red teamingdevelopment and operations. You will advance the state of the art through research and development, advance the state of the practice through support to critical projects including ATT&CK Evaluations and Caldera, and help our government sponsors use offensive security to improve cyber defense. Our department is responsible for delivering and advancing MITRE’s adversary emulation expertise across all of MITRE’s national security, public sector, and private sector sponsors.

Roles & Responsibilities:

• Use your skills as an offensive security engineer and knowledge of adversary behaviors to build and emulate thecutting-edgecapabilities of real-world threats

• Use AI to advance the state of the art in cyber operations, purple teaming, and cyber threat intelligence

• Use your understanding of cyber intelligence to build products, perform R&D, and help sponsors solve their hardest CTI problems

• Propose and lead research to improve the state of the art of cyber operations

• Participate in, define, or lead offensive security engagements to showblue teams how to respond to real-world adversaries

• Use your knowledge of adversary behavior to advance ATT&CK, Caldera, and other MITRE efforts

Basic Qualifications:

• Typically requires a minimum of 5 years of related experience with a Bachelor’s degree; or 3 years and a Master’s degree; or a PhD with relevant experience who can immediately contribute at this job step; or equivalent combination of related education and work experience.

• Experience creating and using offensive security tools, malware implants, and other red team capabilities in one or more programming languages.

• Demonstrated ability to independently deliver adversary emulation capabilities.

• Excellent written and oral communication skills, including experiencepresenting technical analysis in written products and presentations.

• Must have an active Top Secret/SCI with polygraph U.S Government issued 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 4 days a week on-site.

Preferred Qualifications:

• Knowledge of ATT&CK, Caldera,ATT&CK Evaluations, and MITRE’s work in offensive security.

• Experience in cyber threat intelligence, including using threat intelligence to define red team capabilities.

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

Top Secret/SCI/Polygraph

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

Top Secret/SCI/Polygraph

Salary compensation range and midpoint:

$129,200 - $161,500 - $193,800 Annual

Work Location Type:

Onsite

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 [e-mail] for general support and [e-mail] 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 (https://careers.mitre.org/us/en/benefits) .

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.