Sr. Software Engineer II
Washington dc, DC
Category: Development
Industry: Government
Reference ID: JN -062026-107202
Date Posted: 06/01/2026
Shortcut: http://careers.eliassen.com/4fI2sX
Description:On-site in Washington, DC
Our client seeks a Sr. Software Engineer II to design and manage enterprise endpoint security solutions across DoD and IC environments. The role requires deep expertise with Trellix and Windows/Linux systems, leadership of engineering efforts, incident response support, and delivery of technical reporting in classified, high-availability settings.
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 - $185,000/ yr. w2
Responsibilities:
- Implement and apply technologies, processes, and practices designed to protect networks, devices, programs, and data from malicious attack, damage, or unauthorized access.
- Provide engineering and sustainment support for endpoint security solutions.
- Establish computing environments by designing system configuration, directing system installation, and defining, documenting, and enforcing system standards.
- Provide detailed guidance for hardware and software selection, implementation techniques, and tools to meet current and future capacity requirements.
- Collaborate with software vendors and customers to research, analyze, and implement enterprise-wide security solutions and enhancements that support mission objectives.
- Assist with design, analysis, testing, and implementation of secure architectures.
- Oversee security infrastructure sustainment, maintenance, and advanced configuration, including policy management, database administration, and security management tools.
- Oversee reporting, documentation, and investigation of security incidents and lead development and implementation of corrective measures.
Experience Requirements:
- Active TS/SCI security clearance.
- 7 years of experience in software engineering.
- DoD 8140 (DCWF CSSP Infrastructure Support certification).
- Strong working knowledge administering applications in Windows and Linux environments.
- Expert-level experience deploying and managing Trellix ePO, Threat Prevention, DLP, Endpoint Security (ENS), Policy Auditor, File Integrity Monitor (FIM), and Application Whitelisting.
- Demonstrated experience setting up Trellix from scratch, including policy configuration, system deployment, and integration with Microsoft SQL databases.
- Experience with large-scale enterprise or global networks in a high-paced, diverse environment.
- Understanding of and experience with the IC Architecture Framework and other key network architecture and strategic planning instructions.
- Experience providing status reports and products to senior management and customers.
- Experience with planning, designing, and evaluating security systems and architectures.
Education Requirements:
- Active TS/SCI security clearance.
- Degree preferred but not required.
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 contact fraud@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