Security Information & Event Management (SIEM) Specialist - Incident Response Lead

About Graphcore

At Graphcore, we’re building the future of AI compute.

We’re a team of semiconductor, software and AI experts, with deep experience in creating the complete AI compute stack - from silicon and software to infrastructure at datacenter scale.

As part of the SoftBank Group, backed by significant long-term investment, we are delivering key technology into the fast-growing SoftBank AI ecosystem.To meet the vast and exciting AI opportunity, Graphcore is expanding its teams around the world.We are bringing together the brightest minds to solve the toughest problems, in a place where everyone has the opportunity to make an impact on the company, our products and the future of artificial intelligence.

Job Summary  

The SIEM Specialist/Incident Response Team Lead is responsible for managing the organization's security information and event management system, monitoring network activity in real-time, identifying potential security threats, and leading incident response efforts. This role requires a strong understanding of security information and event management systems, threat intelligence, and incident response procedures. 

The Team 

You’ll be joining a multidisciplinary team with strong technical skills and a very supportive culture. We work closely together and regularly share knowledge, and your skills will make a direct impact on our business. It’s an exciting and pivotal moment for us right now, with plenty of new projects ahead. If you're looking to solve interesting problems and see your work deliver real-world results, this is the team for you. 

Responsibilities and Duties 

• SIEM System Management: Configure, manage, and maintain the SIEM system to ensure it is accurately collecting, processing, and analysing log data from various sources. 

• Liaise with our external Security Operations Center (SOC) Managed Service Provider (MSP) for incident response and escalation purposes, ensuring seamless collaboration and communication during incident response efforts. 

• Stay up to date with emerging threats, trends, and best practices in threat intelligence to enhance the organization's ability to detect and respond to cyber threats. 

• Develop, implement, and maintain incident response plans to ensure effective containment, eradication, recovery, and post-incident activities. 

• Lead incident response efforts, including coordinating efforts with cross-functional teams (e.g., IT, operations), and with external security providers on containment, eradication, recovery, and post-incident activities. 

• Incident Reporting and Communication: Provide regular updates on incident status, containment, and resolution to senior leadership and stakeholders. 

• Develop and deliver internal training and table-top exercises of incident response procedures. 

• Ensure the SIEM system is aligned with industry standards (e.g., ISO 27001, Cybersecurity Essentials) and regulatory requirements. 

Candidate Profile  

Essential: 

• Experience in cybersecurity or a related field 

• Proven experience with SIEM systems 

• Experience with threat intelligence frameworks (e.g., MITRE ATT&CK) 

• Excellent communication and collaboration skills to work effectively with cross-functional teams 

• Strong analytical and problem-solving skills to identify potential security threats 

• Ability to manage competing priorities and meet deadlines in a fast-paced environment 

Desirable 

• Bachelor's degree in computer science, Cybersecurity, or a related field 

• CISSP, CEH, OSCP, or equivalent security certifications 

• Experience with SIEM systems for hybrid environments 

• Familiarity with incident response frameworks (e.g., NIST CSF, ISO 27035) 

• Knowledge of penetration testing frameworks 

• Strong scripting skills in languages like Python, Bash or PowerShell 

• Experience with big data analytics and visualization tools 

Benefits

In addition to a competitive salary, Graphcore offers flexible working, a generous annual leave policy, private medical insurance and health cash plan, a dental plan, pension (matched up to 5%), life assurance and income protection. We have a generous parental leave policy and an employee assistance programme (which includes health, mental wellbeing, and bereavement support). We offer a range of healthy food and snacks at our central Bristol office and have our own barista bar! We welcome people of different backgrounds and experiences; we’re committed to building an inclusive work environment that makes Graphcore a great home for everyone. We offer an equal opportunity process and understand that there are visible and invisible differences in all of us. We can provide a flexible approach to interview and encourage you to chat to us if you require any reasonable adjustments.