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Cyber Security Analyst

Mountfitchet Group
Posted onFeb 26, 2026
LocationSurbiton, England, United Kingdom (On-site)
Employment typeFull-time

Key Responsibilities:     

  • Monitor, detect and respond to security alerts using Microsoft Sentinel, Microsoft Defender, and Ironscales
  • Manage security logs, automate incident responses, oversee endpoint protection, investigate threats, and remediate vulnerabilities
  • Investigate and remediate endpoint threats and vulnerabilities
  • Correlate security events and develop automated playbooks in Sentinel
  • Support threat hunting activities and contribute to incident response efforts
  • Manage phishing alerts and user-reported incidents through Ironscales
  • Collaborate with the London-based cyber security team to ensure global coverage and knowledge sharing
  • Maintain documentation of incidents, response actions, and detection rules
  • Contribute to continuous improvement of detection logic, workflows, and user awareness initiatives
  • To complete any reasonable instruction from a more senior person
  • This should not be regarded as an exhaustive list of duties and the job description may be amended from time to time.
  • Bachelor Degree in Computer Science or equivalent experience in a cyber security or SOC analyst role (2 years +) 
  • Hands-on experience with Microsoft Sentinel and Microsoft Defender
  • Familiarity with Ironscales or similar email security platforms
  • Strong understanding of security operations, incident response, and threat detection
  • Experience with SIEM tools, log analytics, and security automation
  • Good communication skills and ability to work in a distributed team environment
  • Strong analytical and problem-solving abilities
  • Keen eye for automation of security operations centre (SOC) 
  • 22 days annual leave (increasing to 25 after 1years service and with length of service)  
  • Free breakfast and lunch in our onsite canteen “The Hangar” 
  • Opportunity to attend events with the team around the UK and Europe
  • Career progression and development opportunities including upskilling & certifications
  • Free onsite gym – including classes 
  • Free onsite parking  
  • Private healthcare and pension  
  • 2x charitable days per year  
  • Cycle to work scheme 

We’re looking for a proactive and skilled Cyber Security Analyst to join our team in an exciting new role! You’ll be at the forefront of protecting our organization’s digital environment, using cutting-edge tools like Microsoft Sentinel and Defender. Your role will involve monitoring and responding to security threats, automating incident workflows, and strengthening our endpoint and email security.

Mountfitchet Group

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Air Charter Service (ACS) is a global aircraft charter broker founded in 1990, arranging over 30,000 private, group, and cargo charters annually across 25+ offices worldwide with nearly $700 million in revenue.

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