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Systems Engineer, Senior

Parsons

Annapolis Junction, MD · Posted August 3, 2026

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Parsons has filed 5 layoff notices in the last twelve months, covering 94 workers, most recently October 2026. These are public filings with state labor departments, and an open role can sit alongside them. See the filings

About the job

In a world of possibilities, pursue one with endless opportunities. Imagine Next!

At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.

Job Description:

Parsons is looking for an amazingly talented Sr Systems Engineer to join our team! In this role you will get to leverage your existing systems engineering and cybersecurity knowledge to lead and perform in depth vulnerability assessments, identify threats and develop mitigations of weapons and space systems under the US Combatant Commands (COCOM's).

What You'll Be Doing:

Perform cybersecurity assessments of large-scale DOD systems, utilizing an OCO (Offensive Cyber Operations) mindset to perform DCO (Defensive Cyber Operations) activities.

Perform long term, in depth vulnerability assessments leveraging systems engineering principals and knowledge, utilizing any available information, including architecture diagrams, build specifications, design documentation, and systems architecture.

Leverage your interpersonal skills to foster relationship development with our customers to gain additional insights, information, and documentation to improve our ability to accomplish our mission.

May serve as a team facilitator in providing technical guidance to technical support, technical writers, and others.

Gathers business and product functional and performance requirements.

Defines and designs complex and difficult system specifications, input/output processes, and working parameters for hardware/software compatibility.

Reviews literature, patents, and current practices relevant to the solution of assigned projects.

Authors technical whitepapers on approaches to the client's operational needs, and as a basis for future development and proof of concept.

Infrequent travel (CONUS and OCONUS)

What Required Skills You'll Bring:

Minimum of 10 years of Systems Engineering experience. Experience may be substituted with education as follows: High School Diploma: + 14 years System Engineering Experience Relevant Bachelor's degree: STEM field + 10 years System Engineering Relevant Master's degree: STEM field + 8 years System Engineering

Strong Systems Engineering expertise

Healthy knowledge of cybersecurity / vulnerability assessment process

Active TS/SCI with Polygraph required.

What Desired Skills You'll Bring:

Cybersecurity certification (Sec+, CISSP, CEH, etc.)

Familiarity with NIST SP 800-160

Familiarity with INCOSE defined life cycle systems engineering processes

Experience with/ knowledge of large-scale DoD Systems

Security Clearance Requirement: An active Top Secret SCI w/Polygraph security clearance is required for this position.​

This position is part of our Federal Solutions team.

The Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.

Salary Range: $134,100.00 - $241,400.00

We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!

Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.

We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!

Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to https://www.parsons.com/fraudulent-recruitment/ .