Operations Advisor, Cyber Defense Operations

Cyderes · Reading, UK

We Help the World Be Everyday Ready™

Today's threatscape is relentless. So are we. At Cyderes, we build practical Identity & Access Management (IAM)Exposure Management, and risk programs, helping organizations stop active threats fast with Managed Detection & Response (MDR) that integrates with existing tools. Powering it all is Meridian, our entity fabric that connects identities, assets, and access into one trusted reality. Augmented by AI and driven by seasoned operators, our tireless global team arms organizations with the people, platforms, and perspectives they need to conquer whatever tomorrow throws their way.

 
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Role Summary

The Operations Advisor is the primary technical owner of detection outcomes for assigned clients. You drive detection quality, identify gaps in coverage, and advance client security maturity through expert-level advisory and hands-on detection engineering.

You own the technical account relationship — and you deliver measurable outcomes that clients can see and trust.

Responsibilities

  • Own and maintain detection coverage aligned to the Cyderes Rule Set
  • Lead tuning and optimization of detection rules across SIEM platforms
  • Identify, prioritize, and remediate detection gaps
  • Execute and guide retrohunt activities to validate detection effectiveness
  • Own the technical account relationship for assigned clients
  • Lead technical cadence calls focused on detection performance, gaps, and outcomes
  • Translate technical findings into risk-based, business-relevant insights
  • Guide clients on prioritization of improvements based on detection impact
  • Act as a trusted advisor on detection strategy and operational effectiveness
  • Support and lead response efforts for security incidents
  • Provide detection-focused expertise during investigations
  • Identify detection improvements based on real-world incident learnings
  • Requirements

  • 3–5 years of experience in detection engineering, security operations, or a closely related discipline
  • Hands-on proficiency with one or more enterprise SIEM platforms (Splunk, Microsoft Sentinel, Chronicle, or equivalent)
  • Demonstrated experience writing and tuning detection rules in production environments
  • Working knowledge of MITRE ATT&CK and ability to map detections to adversary TTPs
  • Strong client-facing communication — leads technical conversations and earns trust
  • Experience conducting or supporting incident response investigations
  • Experience in a managed security services or MSSP environment serving multiple clients
  • Proficiency in multiple SIEM query languages (SPL, KQL, YARA-L, or similar)
  • Familiarity with SOAR platforms and automation-assisted detection workflows
  • Apply →