Sr. Systems Engineer
Washington dc, DC
Category: Engineer
Industry: Government
Reference ID: JN -042026-106268
Date Posted: 04/05/2026
Shortcut: http://careers.eliassen.com/wJZExK
Description:
Onsite in Washington, DC
our client seeks a Sr. Systems Engineer to manage and secure enterprise Windows and macOS endpoints for a high-visibility federal mission. The role will support classified and high-security environments, deliver compliant endpoint services, and drive operational stability within an Agile model. The engineer will handle imaging, patching, vulnerability remediation, and Tier 3 support while communicating risks and solutions to stakeholders. The position demands immediate contribution, clear judgment, and reliable execution.
This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.
Salary: $160,000 - $190,000/ yr. w2
Responsibilities:
- Work as part of a collaborative team delivering technical solutions within the highest levels of the federal government.
- Manage endpoint imaging, patching, and vulnerability remediation across enterprise environments.
- Support and operate enterprise endpoint management tools and platforms.
- Resolve Tier 3 endpoint issues in support of a service desk and mission operations.
- Maintain secure, compliant Windows and macOS client environments.
- Participate in Agile execution and continuous improvement activities.
- Communicate technical issues, solutions, and risks with stakeholders.
- Build and maintain customer trust through technical expertise and reliability.
- Apply sound engineering judgment to deliver solutions aligned to customer needs.
Experience Requirements:
- Active Top Secret clearance with current or previously held SCI access.
- Required certifications: Microsoft MD-102 and Security+.
- DoD 8140 certification aligned to the 451 System Administrator work role such as Security+, Cloud+, SSCP, CASP+, or CISSP.
- 5+ years of IT experience focused on endpoint and client device management across Windows 11, macOS Sequoia and Tahoe, and Apple iOS.
- Hands-on experience with OS imaging, patch management, performance troubleshooting, and vulnerability remediation in enterprise environments.
- Experience managing full lifecycle of endpoint devices including provisioning, configuration, maintenance, and decommissioning.
- Operational Tier 3 endpoint support experience with advanced troubleshooting and issue resolution.
- Administration experience with endpoint management platforms such as Microsoft Endpoint Configuration Manager, Microsoft Intune, Jamf, Tanium, or BigFix.
- Ability to contribute immediately in a mission-critical operational environment.
Education Requirements:
- Bachelor’s or Associate’s degree in an IT-related field preferred.
- Microsoft MD-102 certification.
- CompTIA Security+ certification.
- DoD 8140-aligned certification such as Security+, Cloud+, SSCP, CASP+, or CISSP.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland 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.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contactInfoSec@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above