49543 Requisition #
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Windows OS Engineer

Woodbridge or Centreville or Quantico, VA

**U.S. citizens ONLY due to government or federal requirement**


Can you perform neurosurgery on a PC running Windows? Do you actually have a preference between user mode applications and assembly development? Do you want to be part of a team heavily involved in keeping our nation secure every day? If so, we have a job for you.


Parsons is seeking top-notch software engineers to develop specialized software within a first-class team of developers, computer scientists, and cyber specialists. You will want to have tinkered with Windows internals (how the registry works, user mode development, kernel development, Windows Debuggers, etc.) to be successful in this position.

Your work will give you direct access to the federal customer, as well as other contractors, who participate in the software tool design and development process, product deployment, and support of new and ongoing operations. Parsons is determined to provide our customers with unique capabilities and expertise that other company’s lack. We operate as a high-performance team dedicated to maintaining the top technical talent to perform the customer’s mission - our number one priority. If you are enamored by technology and eager to sink your teeth into something new, then we want to meet you.


  • A minimum of 6 years of computer engineering experience
  • A minimum of 3 years of experience working with Windows OS internals including memory management, Windows security features, and Windows API
  • Proficiency programming in C/C++
  • Experience with PowerShell scripting
  • Active security clearance

Applicants selected for employment may be subject to a federal background investigation and may need to meet additional eligibility requirements for access to classified information or materials.


Desired Experience:

  • Ability to program using Assembly, Python, C#, and PHP
  • Knowledge of how operating systems work from “user mode” code right through to the kernel; Operating Systems Architecture

Parsons is a digitally enabled solutions provider focused on the defense, security, and infrastructure markets. With nearly 75 years of experience, Parsons is uniquely qualified to deliver cyber/converged security, technology-based intellectual property, and other innovative services to federal, regional, and local government agencies, as well as to private industrial customers worldwide.

Parsons is an equal opportunity, drug-free employer committed to diversity in the workplace. Minority/Female/Disabled/Protected Veteran/LGBT.

For more about Parsons, visit parsons.com and follow us on Facebook, Twitter, LinkedIn, and YouTube.

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