Sr. Software Engineer II

Sr. Software Engineer II

Washington dc, DC

Type: Permanent

Category: Development

Industry: Government

Reference ID: JN -062026-107202

Date Posted: 06/01/2026

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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.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( View email address on click.appcast.io , View phone number on click.appcast.io) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

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 View email address on click.appcast.io .

About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

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