Senior Threat Analyst 1

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.Role SummaryAs a Threat Analyst  on our Managed Detection and Response (MDR) team, you will provide best-in-class monitoring, detection, and response services to proactively defend customer environments before attacks prevail. You will work alongside and contribute to a team of cyber threat hunters, incident response analysts, engineers, and ethical hackers by using enterprise, log analysis and endpoint collection systems to facilitate investigations, identification, and neutralization of cyber threats.What You Will DoMonitor, investigate, and respond to alerts generated by the Sophos security stack (including EDR/XDR capabilities)Lead and mentor Tier I Analysts through escalated cases, ensuring thorough and accurate investigation practices. Perform end-to-end analysis on suspicious activity to assess scope, impact, and riskIdentify and respond to cyber threats across customer environments using approved playbooks and toolingAccurately document findings, investigative steps, and outcomes in the MDR case management platformConduct threat hunting to identify potential threats throughout the MDR customer baseInvestigate phishing emails, suspicious binaries, and behavioral anomaliesSupport detection tuning by identifying recurring false positives and suggesting improvementsStay informed on threat actor behaviors, MITRE ATT&CK techniques, and Sophos threat research updatesProactively research emerging IOCs, active exploits, and vulnerabilities to stay ahead of evolving threatsContribute to internal knowledge bases, documentation, and continuous improvement initiativesParticipate in shift rotations and ensure timely, detailed handovers between global teamsProvide detection and response support for active security incidentsManage case workflows: create cases, track progress, and follow up with clients until resolutionEngage with clients via chat, phone, and tickets as part of case handlingAssist with developing and refining Security Operations processes, playbooks, and tooling feedbackWhat You Will Bring5+ years of experience working in a SOC environment or computer security team in an IT environment •Endpoint and network security experience required; IDS, IPS, EDR, ATP, Malware defenses and monitoring experience Threat hunting experience preferred Knowledge of common adversary tactics and techniques, e.g., obfuscation, persistence, defense evasion, etc. Knowledge of Mitre ATT&CK framework preferred Working knowledge of incident response procedures Experience with SQL query construction preferred Experience with OSQuery is a plus Experience administering and supporting Windows OS (both workstations and server) and one of the following: Apple or Linux-based operating systems (e.g. XP, Windows 7, 2003, 2008, OS X) Fundamental understanding of network traffic analysis including TCP/IP, routing, switching, protocols, etc. Strong understanding of Windows event log analysis Experience with enterprise information security data management - SIEM experience a plus Programming and scripting skills - proficient knowledge of Powershell is a plus Excellent troubleshooting and analytical thinking skills Strong documentation and communication skills Advanced Cyber Security certifications preferred but not required Excellent customer service skills Passion for all things information technology and information security Natural curiosity and ability to learn new skills quickly Ability to think outside the box Innovative mindsetWillingness to participate in shift work including nights, and holidays  – Monday to Friday, from 2 pm to 10:30 pm EasternIn Canada, the base salary for this role ranges from $86,000 to $143,000. In addition to base salary, we offer additional  compensation including bonus eligibility and a comprehensive benefits package.  A candidate’s specific pay within this range will depend on a variety of factors, including job-related skills, training, location, experience, relevant education, certifications, and other business and organizational needs. #B2Ready 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 wellbeingOur 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. 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 | Sophos