Senior Security Researcher in Cheltenham

Overview

The Cloud & AI organization accelerates Microsoft’s mission and bold ambitions to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers' heterogeneous environments, as well as ensuring the security of our own internal estate. Our culture is centered on embracing a growth mindset, a theme of inspiring excellence, and encouraging teams and leaders to bring their best each day. In doing so, we create life-changing innovations that impact billions of lives around the world.

Do you have a passion for helping Microsoft’s clients defend themselves against targeted exploitation? Are you interested in being intimately involved in the latest, cutting-edge developments in the security industry and having a direct impact on the security of all Microsoft customers? Do you want to be on the front lines of helping our customers go toe-to-toe against advanced adversaries? Are you interested in a fast-paced job full of new opportunities? If that resonates, consider joining us as a Security Researcher on the Global Hunting, Oversight, and Strategic Triage (GHOST) team!

We are looking for an experienced Senior Security Researcher with an analytical background to join our team to perform threat hunts, assist with investigations, develop threat intelligence, and cultivate investigation best practices into Microsoft tooling and products. Researchers will support a global team to identify and catalog new attacker TTPs, victims, and deliver customer notifications to protect worldwide enterprise customers and empower customers to protect themselves via constantly improving Microsoft products.

Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees, we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day.

Responsibilities

• Performing deep analysis of attacker activity in on-premises and cloud environments.
• Identifying potential threats, allowing for proactive defence before an actual incident.
• Providing recommendations to improve customers' cybersecurity posture going forward and performing threat intelligence knowledge transfer to prepare customers to defend against today’s threat landscape.
• Building proof-of-concept and prototype threat hunting tools, automations, and new capabilities.
• Driving product and tooling improvements by conveying learnings from threat hunting and incident response at scale to engineering partner teams.
• Identifying, prioritising, and targeting complex security issues that cause negative impact to customers.
• Creating and driving adoption of relevant mitigations and providing proactive guidance.

Qualifications

Required qualifications:

• Demonstrated professional experience in Threat Hunting, Incident Response (DFIR), Threat Intelligence, or Security Research.
• Experience investigating sophisticated cyber threats, including APT or nation-state activity.
• Extensive experience working with forensically collected data (and tooling), security telemetry, logs, and SIEM platforms.
• Proficiency with KQL or equivalent query languages (Splunk, Humio, Kibana, etc.).
• Experience with EDR and security monitoring technologies such as Microsoft Defender, Microsoft Sentinel, CrowdStrike, or similar platforms.
• Proven ability to analyze security data to investigate attacker activity, and derive indicators of compromise (IOCs), indicators of activity (IOAs), and TTPs.
• Strong written and verbal communication skills in English and ability to work in a global team environment.
• Ability to obtain and maintain a UK Security Clearance.

Preferred Qualifications:

• Industry certifications in cybersecurity, DFIR, incident response, or threat hunting (e.g., CISSP, GIAC).
• Experience across multiple cybersecurity disciplines, including threat hunting, incident response, digital forensics, and threat intelligence.
• Working knowledge of Microsoft security technologies, including Defender and Sentinel.
• Experience analyzing large-scale security telemetry and hunting across enterprise environments.
• Understanding of scripting or the ability to read and interpret code and automation workflows.