Senior Threat Researcher- Threat Detection Engineer

About Us Aperture Cloud 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. Aperture Cloud 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, Aperture Cloud ’ complete portfolio includes industry-leading endpoint, network, email, and cloud security that interoperate and adapt to defend through the Aperture Cloud 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. Aperture Cloud 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 Aperture Cloud X-Ops and the newly added Counter Threat Unit (CTU). Aperture Cloud is headquartered in Oxford, U.K. More information is available at www.sophos.com. Role Summary We are seeking a detail-oriented and technically skilled Detection Engineer to join our X-OPS team. In this role, you will be responsible for analyzing advanced security threats—ranging from malware to complex web attacks—and translating threat intelligence into high-fidelity detections across our platform. Your work will help ensure our analysts and clients receive highly accurate, actionable alerts with minimal noise. You will leverage data from over 40 third-party and internal sources, partner with our CTU Threat Intelligence team, and use a range of scripting and automation tools to strengthen detection capabilities. The ideal candidate is a hands-on security practitioner with a deep understanding of endpoint behavior, malware analysis, and detection development who thrives in fast-paced, technical environments. What you will do Develop countermeasures to detect advanced threats based on research and intelligence from the CTU team. Analyze endpoint behaviors and logs to design detections using multi-source telemetry. Continuously refine and monitor detection rules to optimize the signal-to-noise ratio for alerts. Research and implement alert handling for new device ingestions, ensuring high-value signal delivery. Leverage internal tooling to distinguish native from standard integrations for detection accuracy. Collaborate on the development of internal tools, automation, and detection infrastructure. Act as a subject matter expert across departments including Product Management, Marketing, and Labs Research. What you will bring Essential skills Strong passion for cybersecurity research and the ability to quickly learn emerging technologies. 10+ yrs of relevant experience in threat research, 5+ yrs in detection writing Hands-on experience in scripting languages (PowerShell, Bash, Python) and use of Python data science libraries (e.g., NumPy, Pandas, Matplotlib). Knowledge of CI/CD pipelines, testing frameworks, and automation principles. Proficiency in analyzing logs from firewalls, proxies, and security infrastructure to identify anomalies. Familiarity with event logs, traffic pattern anomalies, and threat hunting methodologies. Strong understanding of endpoint detection, Linux/Unix and Windows OS internals, vulnerability identification, and workflow automation. Experience with event correlation and incident reconstruction using log data is a plus, Network traffic analysis skills, including identification of anomalous or malicious traits is a plus. Solid grasp of database querying, systems architecture, and process automation for operational improvements is a nice to have. Desirable skills Experience in malware analysis, including static/dynamic techniques and reverse engineering (IA32/64, ARM binaries). Forensic analysis of memory and disk images across various OS and file system types. #B2 Ready to Join Us? At Aperture Cloud , 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 Aperture Cloud ? · Aperture Cloud 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