Senior Incident Responder

Senior Incident Responder (DFIR)

About the role

Our Digital Forensics and Incident Response (DFIR) team lead the technical investigation and response to security incidents at Tesco. As part of this team, you’ll work alongside our security operations, threat intelligence, and security engineering teams to protect, detect, and respond to security threats across Tesco’s diverse and evolving estate.

You’ll apply your deep technical knowledge and critical thinking ability to investigate and understand the full extent of security incidents and threats. Your ability to distil and clearly convey technical information will allow you to provide the key contextual information to decision makers that enables them to make informed decisions.

As a senior position, when you’re not investigating security incidents, you’ll have the freedom to leverage your knowledge and real-world experience to help improve and automate the team’s technical workflows, working alongside other teams to help drive innovation across our prevention, automation, detection and response capabilities. Your status as a senior incident responder means you’ll serve as a role model for engineers and analysts across Security Operations.

You will be responsible for

• Investigation and Response: Perform host, network, and cloud-based forensic analysis to understand the full extent of security incidents and take appropriate response actions to contain, remediate, and recover.
• Incident Handling: Support cyber-security incident managers and decision makers with root cause analysis and formulating recommendations for detection and prevention controls.
• Technical Project Work: Use your technical capabilities to enhance our existing processes as well as identifying and working on new methods to deliver DFIR services to the ever-changing technology requirements of the business.
• Threat Hunting & Detection Engineering: Lead intelligence-based threat hunts to uncover anomalous behaviour in our estate that is representative of the security threats most relevant to Tesco, testing and raising potential detections to contribute to our internal detection engineering programme.

You will need

• 4+ years of relevant experience.
• Experience with responding to security incidents in large scale corporate on-premises and public cloud environments (preferably Microsoft Azure).
• Experience with forensic analysis of cyber-security incidents on Windows, MacOS, and Unix operating systems and in-depth understanding of those operating systems.
• Ability to perform static and dynamic analysis of suspicious scripts, executables etc.
• Experience with a broad range of security technologies such as EDR, SOAR, and SIEM.
• Ability to think critically and lead technical investigations.
• Ability to handle high pressure situations in a calm, productive, and professional manner.
• Proficiency in at least one programming or scripting language.