Client-Facing GreyMatter Threat Engineer & IR Specialist

ReliaQuest, LLC; England; On-site; GBP 60,000 - 100,000; Full time

Benefits offered by this job

Generous Paid Time Off

Tuition and certification reimburse

Medical, dental, and vision coverage

Free lunch on Fridays

Job summary

ReliaQuest, a leading AI cybersecurity company, seeks a GreyMatter Specialist who blends threat detection, engineering, and incident response. You will work with enterprise customers to resolve challenges from start to finish and grow your skills using GreyMatter platform.

In this role you’ll deploy and fine‑tune detection rules, integrate log sources, conduct investigations including Tier 3 incidents, and communicate findings to customers.

Qualifications

• Bachelor's degree in related field.
• Understanding of cybersecurity and IT disciplines including networking, operating systems, authentication protocols, general enterprise network, architecture, and security incident response.
• Knowledge of TCP/IP protocols, network analysis, and network/security applications
• Basic knowledge of Linux/Unix operating systems
• Ability to blend technical and communication skills to advise the customer
• Must demonstrate great attitude, energy, and effort
• Excellent verbal and written communication skills (English language)

Responsibilities

• Be a trusted technical advisor resolving customer challenges from start to finish.
• Provide analysis and recommendations based on alert activity, response playbook availability, and investigations.
• Triage and fine‑tune security alerts, Digital Risk Protection (DRP) alerts, and engineering health alerts to ensure optimal performance.
• Integrate and configure log sources for existing customers.
• Troubleshoot and resolve issues related to data parsing and ingestion to ensure smooth operations and data accuracy.
• Independently integrate and configure log sources, handling both administrative tasks and ad‑hoc requests to complete work efficiently.
• Deploy and fine‑tune detection rules using GreyMatter Detect.
• Employ the Cyber Analysis Methodology to conduct investigations.
• Conduct advanced investigations, including Tier 3 incidents, ad‑hoc threat hunts, and customer‑requested analyses.
• Communicate effectively with customers regarding engineering and Incident Response (IR) escalations.
• Spend 75% of your day in front of the customer

Skills

Cybersecurity knowledge

Networking fundamentals

Linux/Unix basics

English communication

Education

Bachelor's degree

Tools

GreyMatter Detect

SIEM

Job description

ReliaQuest, a leading AI cybersecurity company, seeks a GreyMatter Specialist who blends threat detection, engineering, and incident response. You will work with enterprise customers to resolve challenges from start to finish and grow your skills using GreyMatter platform.

In this role you’ll deploy and fine‑tune detection rules, integrate log sources, conduct investigations including Tier 3 incidents, and communicate findings to customers.