Threat Emulation Engineer - Blue/Purple Team

GuidePoint Security provides trusted cybersecurity expertise, solutions and services that help organizations make better decisions and minimize risk. By taking a three-tiered, holistic approach for evaluating security posture and ecosystems, GuidePoint enables some of the nation’s top organizations, such as Fortune 500 companies and U.S. government agencies, to identify threats, optimize resources and integrate best-fit solutions that mitigate risk.

Threat Emulation Engineer - Blue/Purple Team

Candidates MUST have an active Top Secret/SCI clearance with a CI Poly within 10 years for consideration. This position is 100% onsite in Chantilly, VA

Join Our Elite Security Team – Where Innovation Meets Impact!

Are you ready to become a technical leader who solves the most challenging security problems organizations face—including the ones they don't even know exist yet? As a Security Engineer, you'll be responsible for service delivery and expected to be a product subject-matter expert, working independently on small projects and collaboratively on large-scale enterprise deployments.

You'll fuel solutions that make the deepest impact across organizations, working in a fast-paced environment where your insatiable thirst for learning new technologies will be celebrated and supported.

What Makes This Opportunity Exceptional:

Our goal is never to fix and leave, but to share knowledge through comprehensive documentation and knowledge transfer, ensuring you build upon meaningful work. You'll be part of a large internal support group with extensive experience and benefit from our internal training program designed to increase your skills and keep pace with technology changes. We focus on enabling our engineers to become complete security professionals able to analyze security solutions, not just install and configure products. You'll gain a broad spectrum of knowledge and skills that allow you to give advice and direction relevant to today's threats.

No Prior Experience with Automated Security Validation Required: While experience with Mandiant Security Validation Tool would be great, we'll train you on the tool if you have a solid foundation in cybersecurity. We're vendor neutral security engineers providing services that meet customer needs, not our own or that of vendors.

Role & Responsibilities

• Complete internal training for Automated Security Validation (ASV).

• Lead complex ASV deployments and partner with customers to address diverse security use cases.

• Assess customer security posture and requirements to guide solution design.

• Maximize ASV value by enabling customers and supporting their cybersecurity strategy.

• Collaborate with internal product and technical teams to deliver solutions and drive innovation.

• Apply prior experience, share best practices, and develop creative approaches to increase adoption.

• Empower customers to independently address future security questions.

Required Qualifications

• 5–10 years of security systems engineering and troubleshooting experience.

• Strong understanding of cyber threat techniques, intelligence analysis, and adversary TTPs.

• Familiarity with MITRE ATT&CK and similar threat frameworks.

• Experience designing log ingestion and aggregation strategies.

• Knowledge of key security events across common IT platforms.

• Proficiency with Windows, macOS, and Linux systems.

• Experience with networking and security troubleshooting (firewalls, routing, NAT, etc.).

• Ability to manage and deliver multiple projects independently.

• Active DoD 8570 IAT Level II+ certification (e.g., Security+, CEH).

• Active TS/SCI clearance with polygraph.

Preferred Qualifications

• Experience configuring and utilizing enterprise SIEM platforms.

• Understanding of OS auditing (Syslog, Windows Event Logs).

• Experience with Mandiant Security Validation or other Breach and Attack Simulation (BAS) tools.

• Red or purple team experience.

• Experience developing SOC runbooks, workflows, and policy documentation.

• Familiarity with various scripting languages (bash, python, powershell, perl)

• Bachelor’s degree in a relevant field or equivalent experience.

“Applicants selected will be subject to a security investigation and must meet eligibility requirements for access to classified information.”
We use Greenhouse Software as our applicant tracking system and Zoom Scheduler for HR screen request scheduling. At times, your email may block our communication with you. Please be sure to check your SPAM folder so that you don't miss updates on your application.

Why GuidePoint?

GuidePoint Security is a rapidly growing, profitable, privately-held value added reseller that focuses exclusively on Information Security. Since its inception in 2011, GuidePoint has grown to over 1,200 employees, established strategic partnerships with leading security vendors, and serves as a trusted advisor to more than 6,200 customers.

Firmly-defined core values drive all aspects of the business, which have been paramount to the company’s success and establishment of an enjoyable workplace atmosphere. At GuidePoint, your colleagues are knowledgeable, skilled, and experienced and will seek to collaborate and provide mentorship and guidance at every opportunity.

This is a unique and rare opportunity to grow your career along with one of the fastest growing companies in the nation.

Some added perks….

• Remote workforce primarily (U.S. based only, some travel may be required for certain positions, working on-site may be required for Federal positions)

• Group Medical Insurance options: Zero Deductible PPO Plan (GuidePoint pays 90% of the premium for employees and 70% for family plans (spouse/children/family) or High Deductible Health Plan with HSA (GuidePoint pays 100% of the employees premiums and 75% for family plans (spouse/children/family). If you choose the High Deductible / HSA plan, GPS will contribute in 4 equal quarterly installments: ($850 per EE annually / $1750 per family annually (includes spouse/children/family options)

• Group Dental Insurance: GuidePoint pays 100% of the premium for employees and 75% of family plans

• 12 corporate holidays and a Flexible Time Off (FTO) program

• Healthy mobile phone and home internet allowance

• Eligibility for retirement plan after 2 months at open enrollment

• Pet Benefit Option