Senior Full Stack Engineer, TS​/SCI w​/Polygraph with Security Clearance

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.

Department Summary:

Do you want to develop software systems that contribute to solving our nation's most critical problems? Do you want to work alongside engineers and scientists that are experts in their fields? Are you passionate about best practices for delivering the highest quality software solutions? We're making a difference every day-working for a safer, healthier, and more secure nation and world. At MITRE you will leverage your background and experience to make a difference in tangible, impactful problems that face our nation.

You'll work on diverse projects that support our Government sponsors and benefit from numerous learning and growth opportunities. Our workplace reflects our values. We want you to continue to grow your career at MITRE so that you can experience the gratifying work, our competitive benefits, exceptional professional development opportunities, and a culture of innovation that embraces flexibility, collaboration, and career growth.

Roles & Responsibilities : MITRE is seeking a Senior Full Stack Engineer to support high-priority Intelligence Community (IC) initiatives requiring secure, scalable, and mission-driven application development. This role requires an active TS/SCI with Polygraph. The selected candidate will serve as a technical subject matter expert responsible for designing, developing, and deploying full stack applications within highly sensitive Intelligence Community environments. This position supports enterprise-level IC challenges related to technology modernization, data integration, analytic enablement, and secure collaboration.

Responsibilities include:

* Collaborate directly with IC sponsors and MITRE technical teams to translate complex mission requirements into scalable application architectures.
* Design, develop, and deploy secure front-end and back-end solutions within classified environments.
* Deliver modern software capabilities, improving architecture, platforms, and developer workflows with strong engineering practices (secure coding, reviews, testing, maintainable design).
* Partner with UX, Architecture, Data, Security, and Operations to define technical strategy and influence roadmaps with a customer-centric mindset.
* Lead or support development of enterprise-grade applications addressing cross-IC integration, data visualization, workflow automation, and analytics.
* Develop and maintain robust APIs, database schemas, and backend services supporting high-performance, secure applications.
* Ensure performance, reliability, and security of deployed systems.
* Implement scalable architectures aligned with Dev Sec Ops  and Infrastructure-as-Code principles.
* Present technical solutions clearly to both technical and non-technical stakeholders.
* Mentor junior developers and contribute to department-wide technical standards and tradecraft. The primary responsibilities of this position must be carried out in person in McLean, Virginia or Bethesda, Maryland. The successful candidate will establish regular presence at MITRE and IC locations and may be required to travel within the National Capital Region.

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.
* Bachelor's degree in Computer Science or Software Engineering.
* Active TS/SCI clearance with a Polygraph (required at time of hire).
* Per the U.S. Government's eligibility requirements, you must be a U.S Citizen to be considered for a security clearance.

* Demonstrated experience as a Full Stack Developer or similar engineering role in secure environments.
* Proficiency in front-end and back-end languages such as JavaScript, Type Script, Python, or Go.
* Proficiency writing SQL queries, data transformations, and designing database schemas.
* Entrepreneurial and innovative spirit and the curiosity to…