Professional Services Engineer - TS/SCI - Full Poly

Professional Services Engineer - TS/SCI - Full Poly

Join to apply for the Professional Services Engineer - TS/SCI - Full Poly role at Corelight.

Do you want to help make the world safe from cyber attack? At Corelight, we believe that the best approach to cybersecurity risk starts with the network. Attackers can evade endpoint detection, firewalls, and many other technologies – but they can’t avoid leaving digital footprints on the networks they traverse. Built on open-source innovations from Zeek, Suricata, and YARA and refined through years of real‑world use, Corelight transforms network footprints from physical, virtual, and cloud networks into actionable insights. Our customers use these insights to speed incident response and pro‑actively hunt for threats.

Job Summary

We are currently seeking a Staff Resident PSE to join our Federal Professional Services team, reporting to the manager of Professional Services. This role would be based in the DC, Maryland, Virginia (DMV) area and requires a TS/SCI Clearance with CI Polygraph. In this role, the main focus is to prepare and validate equipment configurations for new installations, develop content for anomaly and hunt detections, and assess the overall health of the Corelight infrastructure at the client’s location. You are the ideal candidate if you are a strategic thinker with a strong networking and security background, work well independently, and are results‑driven.

Key Responsibilities

• Help customers improve their cybersecurity posture, with a particular focus on process optimization
• Help investigate incidents
• Educate on Zeek Log use, including as it relates to Corelight Suricata alerts
• Design and implement technical solutions with ecosystem partners (packet brokers, asset managers, SOAR systems, etc.)
• Implement queries and dashboards in SIEMs – Splunk, Elastic, Humio, etc.
• Influence customers and Corelight teams and be seen as a technical expert
• Conduct network‑related testing to ensure Corelight products operate correctly
• Perform validation testing of Corelight products
• Provide ongoing, informal, knowledge transfer
• Collaborate with product management on product features/integrations
• Work with back‑end tools like Kafka and Logstash
• Document the process for importing data (MISP, Intel, etc.)
• Develop custom content for threat‑hunting use cases as defined by the customer
• Develop playbooks for SOC/IR workflow automation based on Corelight data
• Ad‑hoc (as requested) written summary reports on equipment and security problems
• Provide technical input to major service outage root cause analysis and corrective action reports
• Lead project status meetings and wrap‑up/post‑mortem meetings
• Some on‑site work required

Minimum Qualifications

• US Citizen
• TS/SCI CI Poly required
• 5+ years of experience in cybersecurity (prior startup experience preferred)
• Extensive experience with a SOC environment
• Zeek/Corelight experience is a plus
• Security and/or networking related certification(s)
• Demonstrated expertise in Windows/MacOS/Linux/Unix operating systems, IDS/IPS
• Network administration, firewall configuration, and strong knowledge of TCP/IP
• SIEM experience (Splunk required, others a bonus)
• Scripting in some of Zeek, Bash, Python, Perl, PowerShell, etc.
• Strong briefing skills; experience interacting with SES/general officer‑level management

Feuled by investments from top‑tier venture capital organizations such as CrowdStrike, Accel, and Insight, Corelight is the fastest‑growing network detection and response platform in the industry. Our customers trust us to protect mission‑critical assets in leading enterprises, government, and research institutions worldwide. We are leading the way with AI‑assisted workflows, machine learning models, cloud security and SaaS‑based solutions to arm defenders with the tools and knowledge they need to disrupt cyber attacks. Our team of passionate innovators is dedicated to solving some of the toughest challenges in cybersecurity while fostering a collaborative, inclusive, and growth‑oriented culture.

Corelight is committed to a geographically distributed yet connected employee base with employees working from home and office locations around the world. At Corelight, we take pride in the diversity of our backgrounds and perspectives and are committed to fostering an inclusive environment that strengthens our company.

We look forward to meeting you. Check us out at www.corelight.com.

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