Cybersecurity Analyst

You will own the day-to-day security operations of our Microsoft-native estate and act as the technical bridge between our in-house team and our managed Security Operations Centre (SOC). It is a role with real independence: you might lead an incident from first escalation to root-cause review, tune a Defender XDR detection after a threat hunt, or pull together the evidence that satisfies our ISO 27001 auditors and regulators.

You will work closely with the Director of Cloud Infrastructure & Information Security, our engineers, Compliance and Risk, and our external partners. Hayfin is a place where good ideas get heard, and you will have the room to shape the security roadmap and automate the routine so the team can focus on what matters.

Responsibilities

• Acting as first point of escalation from the managed SOC, leading investigation, containment and root-cause analysis for Defender XDR and Sentinel incidents
• Developing and tuning detections and KQL queries, and running threat hunts mapped to MITRE ATT&CK
• Hardening our Microsoft environment across Entra ID, Intune, Defender for Endpoint and Azure, and owning the vulnerability management lifecycle
• Administering our email, web and data security controls, and running the phishing simulation and awareness programme
• Producing audit evidence and monthly security metrics for ISO 27001, FCA and DORA obligations, and supporting due diligence on vendors and portfolio companies
• Holding the managed SOC to account and contributing to the security roadmap

You have built your career in security operations or security engineering, and you are ready to take on more ownership. You are calm under pressure, and you write as clearly as you investigate., * Around 3 years’ hands-on experience in a SOC, security operations or security engineering role

• Strong practical experience with Defender XDR, Sentinel, Entra ID and Intune
• Demonstrable incident response experience
• Experience working with or alongside a managed SOC or MSSP
• Clear, concise written communication, from incident reports to management-ready metrics

It would be a bonus if you also have:

• KQL and MITRE ATT&CK knowledge
• Microsoft SC-200, SC-100 or AZ-500 certification
• Experience in financial services or another regulated environment, and familiarity with ISO 27001, FCA or DORA
• Exposure to email and web security platforms such as Mimecast, Egress or Zscaler
• Scripting or automation experience (PowerShell, Python, Logic Apps)
• Experience supporting penetration test remediation or purple-team exercises