Senior Security Analyst
MDD Forensic Accountants
full-time
Posted on:
Location Type: Hybrid
Location: London • United Kingdom
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Job Level
About the role
- The Senior Security Analyst is responsible for strengthening Asta’s security posture through hands-on security engineering, continuous monitoring, and effective operational resilience.
- The role makes informed, risk based decisions during security incidents, prioritising alerts, coordinating containment actions, and recommending remediation strategies.
- It delivers infrastructure hardening, threat detection, vulnerability management and supports Microsoft 365 security improvements.
- The successful candidate will be part of the wider infrastructure team and work closely with development teams, clients, risk and compliance to drive security automation, threat detection, incident response, and risk reduction across the enterprise platform stack.
- The role makes informed, risk‑based decisions during security incidents, prioritising alerts, coordinating containment actions, and recommending remediation strategies.
- It delivers infrastructure hardening, threat detection, vulnerability management and supports Microsoft 365 security improvements.
Requirements
- 4 years + of hands-on experience in infrastructure cybersecurity, combining security tooling engineering and managing SOC operations or incident response with experience in regulated industry.
- Strong understanding of cybersecurity principles, attack vectors, defense strategies and the Mitre Attack framework
- Experience with cloud security (preferably Azure, IAM, secrets management, encryption, & certificate management.
- Experience with Microsoft 365 security suite including Microsoft Defender, Azure AD Identity Protection, threat analytics, and security compliance tools.
- Hands-on experience with SIEM platforms (Splunk, Crowdstrike (Falcon), Log Rhtyhm, Sentinel, or Microsoft Defender).
- Familiarity with EDR/XDR tools (CrowdStrike, SentinelOne, or Microsoft Defender) and endpoint security and configuration.
- Experience of working with tools such as Varonis, Tenable, Pentera & external and internal SOC processes
- Knowledge of operating systems (Windows, Linux) and security hardening techniques with strong scripting & automation skills (Python, Bash, PowerShell)
- Excellent written and verbal communication skills with ability to translate technical concepts for non-technical audiences, deliver training, and produce executive-level reports
- Proactive, self-motivated team player with strong analytical & problem-solving skills and hands-on technical credibility with meticulous attention to detail. Ability to work under pressure and manage multiple priorities during security incidents.
- Desirable: Security certifications (CISSP, CISM, OSCP, CCSP, Security+, CySA+, GCIH, GCIA, CompTIA Security+), experience with regulatory compliance frameworks (GDPR, ISO 27001, SOC2, PCI-DSS, cyber essentials), digital forensics knowledge, threat intelligence platform experience, AWS & GCP. Develop and maintain infrastructure-as-code for security configurations (Terraform, Ansible).
Benefits
- At Asta, you’ll enjoy a market-leading benefits package that puts your wellbeing, career development and financial future first. We combine flexible working, strong family-friendly policies and exceptional rewards to create a supportive, inclusive and high-performing workplace.
- Our benefits include:
- Work-life balance you can rely on
- 35-hour working week with hybrid and flexible working
- Generous holiday allowance that increases with service
- Your health & wellbeing covered
- Private medical insurance with virtual GP access
- Annual health screening, dental cover and eye care
- Subsidised gym or sports club membership
- Support for you and your family
- Enhanced maternity, paternity, adoption and shared parental pay
- Rewarding your contribution
- Highly competitive pension with up to 13% employer contribution
- Life assurance and income protection
- Discretionary annual bonus scheme
- Interest-free season ticket loan and salary sacrifice schemes
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
infrastructure cybersecuritysecurity tooling engineeringSOC operationsincident responsecloud securityMicrosoft 365 security suiteSIEM platformsEDR toolsscriptingautomation
Soft Skills
written communicationverbal communicationanalytical skillsproblem-solving skillsattention to detailteam playerself-motivatedability to work under pressureability to manage multiple prioritiestraining delivery
Certifications
CISSPCISMOSCPCCSPSecurity+CySA+GCIHGCIACompTIA Security+GDPR