Senior Incident Response Analyst 1, MDR

Sophos is seeking an experienced and motivated Senior Incident Response Analyst to support Managed Detection and Response (MDR) customers and managed service providers (MSPs) within the Critical Incident Response Unit (CIRU).

As a Senior Incident Response Analyst, you will lead the investigative execution of active cyber incidents, working directly with customers and MSPs to investigate, contain, and support remediation efforts. Utilizing Sophos technologies, you will work with both large and small organizations across multiple countries and levels of technical maturity. This is a fast-paced role that requires the ability to make quick context-based decisions to disrupt adversary activity.

What You Will Do

• Utilize Sophos technologies to investigate, contain, and respond to cyber incidents
• Mentor incident response analysts and MDR operations analysts by providing technical guidance, review, and escalation support
• Perform advanced incident response analysis to identify initial access, persistence, and lateral movement to contain and remediate threats
• Support MDR customers and MSPs by conducting phone calls and joining meetings to discuss cyber incidents, while often providing priority recommendations to contain, neutralize, and remediate
• Conduct analysis of cyber incidents for malware, ransomware, and other common attack types
• Maintain accurate and detailed documentation for analysis performed during cyber incidents
• Work closely with internal SophosLabs, Detection Engineering, and Threat Hunting teams to continuously expand and improve detection logic
• Work closely with Sophos MDR Operations teams in providing response, remediation guidance, and excellent customer service
• Where appropriate, contribute to Sophos blogs, social media, and other sources on adversary tactics, techniques, and procedures (TTPs), indicators of compromise (IOCs), and other investigative findings
• Evaluate new technologies and processes to improve the overall incident response capability
• Assist in creating accurate and detailed technical incident reports as a post-incident deliverable for MDR customers and MSPs, Data ProtectionIf you choose to explore an opportunity, and subsequently share your CV or other personal details with Sophos, these details will be held by Sophos for 12 months in accordance with our Privacy Policy and used by our recruitment team to contact you regarding this or other relevant opportunities at Sophos. If you would like Sophos to delete or update your details at any time, please follow the steps set out in the Privacy Policy describing your individual rights. For more information on Sophos' data protection practices, please consult our Privacy Policy Cybersecurity as a Service Delivered | SophosWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.apply for this job

• 4+ years experience conducting cyber security investigations in a methodical manner and investigating threats or 2+ years experience performing incident response engagements
• Understanding of network architecture and IT infrastructure
• Experience creating technical documentation and technical reports for customers
• Ability to work under high-pressure situations, when response time matters, to disrupt adversary activity
• Network and endpoint (macOS, Linux, Windows) investigation experience; IDS, IPS, EDR, and basic malware analysis
• Understanding of at least one of the following: OSQuery, SQL, and KQL
• Experience applying frameworks such as MITRE Attack and Cyber Kill Chain
• Ability to work some weekends and holidays
• Knowledge of Windows and Linux command and script interpreters

Desired:

• Advanced cyber security certifications (GCFE/GCFA, CompTIA CySA+, OSCP, etc.)
• Experience calling customers and providing excellent customer service
• Publications, either written or acknowledged, within the cyber security field

About UsSophos is a global leader and innovator of advanced security solutions for defeating cyberattacks. The company acquired Secureworks in February 2025, bringing together two pioneers that have redefined the cybersecurity industry with their innovative, native AI-optimized services, technologies and products. Sophos is now the largest pure-play Managed Detection and Response (MDR) provider, supporting more than 28,000 organizations. In addition to MDR and other services, Sophos' complete portfolio includes industry-leading endpoint, network, email, and cloud security that interoperate and adapt to defend through the Sophos Central platform. Secureworks provides the innovative, market-leading Taegis XDR/MDR, identity threat detection and response (ITDR), next-gen SIEM capabilities, managed risk, and a comprehensive set of advisory services. Sophos sells all these solutions through reseller partners, Managed Service Providers (MSPs) and Managed Security Service Providers (MSSPs) worldwide, defending more than 600,000 organizations worldwide from phishing, ransomware, data theft, other every day and state-sponsored cybercrimes. The solutions are powered by historical and real-time threat intelligence from Sophos X-Ops and the newly added Counter Threat Unit (CTU). Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com., Ready to Join Us?At Sophos, we believe in the power of diverse perspectives to fuel innovation. Research shows that candidates sometimes hesitate to apply if they don't check every box in a job description. We challenge that notion. Your unique experiences and skills might be exactly what we need to enhance our team. Don't let a checklist hold you back - we encourage you to apply. What's Great About Sophos?· Sophos operates a remote-first working model, making remote work the primary option for most employees. However, some roles may necessitate a hybrid approach. While we are a remote first organization, applicants must have legal authorization to work in the jurisdiction where the position is posted, without requiring employer sponsorship.· Our people - we innovate and create, all of which are accompanied by a great sense of fun and team spirit· Employee-led diversity and inclusion networks that build community and provide education and advocacy· Annual charity and fundraising initiatives and volunteer days for employees to support local communities· Global employee sustainability initiatives to reduce our environmental footprint· Global fitness and trivia competitions to keep our bodies and minds sharp· Global wellbeing days for employees to relax and recharge · Monthly wellbeing webinars and training to support employee health and wellbeing Our Commitment To YouWe're proud of the diverse and inclusive environment we have at Sophos, and we're committed to ensuring equality of opportunity. We believe that diversity, combined with excellence, builds a better Sophos, so we encourage applicants who can contribute to the diversity of our team. All applicants will be treated in a fair and equal manner and in accordance with the law regardless of gender, sex, gender reassignment, marital status, race, religion or belief, color, age, military veteran status, disability, pregnancy, maternity or sexual orientation. We want to give you every opportunity to show us your best self, so if there are any adjustments we could make to the recruitment and selection process to support you, please let us know.