About the Role
As a Senior CSIRT Analyst, you will play a key role in G-Research’s Cyber Security Incident Response Team (CSIRT), specializing in cloud detection and response across AWS and hybrid environments. You will investigate, respond, and proactively hunt for threats across a diverse technology landscape, including high-performance compute clusters, Kubernetes and containerized infrastructures, and corporate Windows environments. You will use cloud-native security tooling and multi-SIEM operations to strengthen detection and response capabilities. You will also participate in purple team and red team exercises, continuously validating and improving the team’s effectiveness against advanced adversaries. As a senior member of the team, you will also mentor junior analysts, contribute to automation initiatives, and support the on-call escalation rota for out-of-hours response.
Responsibilities
- Investigating and responding to complex security incidents across cloud, hybrid, and on-premise environments
- Proactively hunting for threats and developing detection logic across SIEM and cloud security systems
- Participating in red and purple team exercises to test, validate and enhance detection and response capabilities
- Developing and maintaining automation workflows using tools such as Tines and Python
- Collaborating with engineering teams to improve log ingestion, detection rules and platform reliability
- Mentoring and supporting junior analysts through knowledge sharing and technical guidance
- Participating in the on-call escalation rota for out-of-hours incidents
- Improving CSIRT processes, playbooks and threat models
Requirements
- Significant experience in cyber incident response, detection engineering or SOC and CSIRT operations
- Strong cloud security expertise across AWS and Azure, including hands-on incident investigation
- Proficiency with SIEM platforms and log analysis
- Experience with red and purple team exercises and adversary simulation
- Knowledge of containerized environments and cloud-native infrastructure security
- Programming or scripting experience, preferably in Python, and exposure to automation platforms
- Strong understanding of modern attack techniques, threat actors and the MITRE ATT&CK framework
- Experience mentoring or leading within a security operations environment
- Strong analytical skills with the ability to investigate complex threats, identify root causes and operate effectively under pressure
- Collaborative approach with the ability to work across teams while supporting and developing others
- Proactive mindset with an interest in automation and continuously improving detection and response
Skills
- AWS
- Azure
- Elastic
- Python
- Tines
- MITRE ATT&CK framework
Location
- London
Work Type
- Full-time
Experience Level
- Senior
Salary/Compensations
- Highly competitive compensation plus annual discretionary bonus
Benefits
- Lunch provided (via Just Eat for Business)
- Dedicated barista bar
- 30 days’ annual leave
- 9% company pension contributions
- Informal dress code
- Excellent work/life balance
- Comprehensive healthcare
- Life assurance
- Cycle-to-work scheme
- Monthly company events
About the Company
- We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.
- From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve.
- Together we’re building a world-class platform to amplify our teams’ most powerful ideas.
- Security is foundational to this mission and must be delivered in a way that supports how our engineering teams build and operate complex systems at scale.
Equal Opportunity
- G-Research is committed to cultivating and preserving an inclusive work environment.
- We are an ideas-driven business and we place great value on diversity of experience and opinions.
- We want to ensure that applicants receive a recruitment experience that enables them to perform at their best.
- If you have a disability or special need that requires accommodation please let us know in the relevant section
