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Deloitte

Audits companies and advises on tax and technology

Senior Threat Hunter

Security Operations & Incident ResponseConfirmed live in the last 24 hours
Full-timeAmsterdam, NetherlandsNo salary listedHybrid

About the Job

Requirements

  • At least 4 years of experience in cybersecurity, with demonstrated expertise in threat hunting, detection engineering, and/or security operations.
  • Hands-on experience with SIEM and EDR platforms such as Microsoft Sentinel, Splunk, Elastic, or comparable solutions.
  • Demonstrated experience conducting hypothesis-driven threat hunts based on large-scale telemetry and security logs.
  • Strong analytical and problem-solving abilities, with a structured, investigative approach.
  • Excellent communication skills and the ability to clearly communicate complex technical findings to technical and non-technical stakeholders.
  • Fluency in both English and Dutch.

Responsibilities

  • Proactively conduct threat hunts on indicators of compromise, attacker behavior, and exploitation attempts in enterprise IT environments using in-depth log analysis and hypothesis-driven investigations.
  • Analyze endpoint, network, and cloud telemetry to identify suspicious activity, anomalous behavior, and potential adversary presence.
  • Translate cyber threat intelligence, vulnerability research, and attacker tradecraft into practical threat-hunting queries and detection logic.
  • Map observed behavior and threat-hunting findings to the MITRE ATT&CK framework to clarify adversary tactics, techniques, and procedures.
  • Develop and refine threat-hunting methodologies, detection rules, and behavioral analytics to strengthen the organization’s security posture.
  • Work with advanced security monitoring platforms such as Microsoft Defender for Endpoint, Microsoft Sentinel, Splunk, and other SIEM and EDR solutions.
  • Collaborate closely with SOC and incident response teams to investigate incidents, validate findings, and improve detection coverage.
  • Continuously monitor emerging threats, vulnerabilities, and adversary techniques to keep hunting strategies current and effective.
  • Coach and guide junior analysts and threat hunters, focusing on knowledge sharing, technical depth, and operational excellence.
  • Prepare technical reports and formulate clear, actionable recommendations for internal stakeholders and client security teams.

Desired Qualifications

  • Experience with Sigma rules or detection-as-code is preferred.
  • Scripting and automation experience, for example with PowerShell, Python, or similar languages, to support hunting use cases and detection development, is a plus.

About the Company

Deloitte

Audits companies and advises on tax and technology

Deloitte audits companies and advises businesses and governments on tax, technology, and risk, and it is one of the Big Four, the world's four largest accounting firms. In 1849 its founder became the first independent auditor of a public company, Britain's Great Western Railway. Its auditors check companies' financial reports for errors and fraud before investors rely on them, while its consultants design strategy, install business software, and defend clients against cyberattacks. Clients pay fees for each audit or project, and each country's Deloitte firm is a separate business owned by its local partners. Deloitte was founded in London in 1845 and is based in New York.

Company size
10,001+
Company stage
Late Stage VC
Total funding
$17.1M
Headquarters
New York, NY
Founded
1845

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