Threat Researcher-Malware Analysis

About Us

Sophos 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 Sophos Labs Threat Response Engineer you will be responsible for providing protection against malware, email spam and other cyber-threats.What you will doYou will be analyzing new malware and spam samples, developing protection against them and handling other protection issues reported by our customers in a timely manner and with qualityAnalyze files reported by our customers to determine their type and risk levelCreate first-line detection signatures for new malicious Windows executableMonitor email spam protection levels and respond to spam outbreaks in a timely manner using appropriate anti-spam detection technology availableTriage and manage cyber-threat related requests coming from our customers by collecting all the necessary information, responding to standard requests and escalating complex issues to problem domain experts for resolutionHandle false positive reports from customers triggered in anti-spam, URL filtering or anti-malware filtering layersUse Sophos data publishing systems to build, test and release protection updates for customer useWrite descriptions for threats for publication on the Sophos website to raise customer awarenessWhat you will bring3-7 years of overall experience in Malware AnalysisGood understanding of common Internet standards (HTTP, SMTP, DNS, Whois, HTML, RFC822, SSH)Understanding of x86 architecture and familiarity with x86 AssemblyUnderstanding of Windows OS fundamentalsBasic understanding of computer and IT securityPractical understanding of PE file format structuresDesired skills and experiencesReverse engineering with IDA or other toolsMalware and/or spam analysis skillsScripting experience (Shell, Perl, Python, JavaScript)Linux user experienceSQL experience

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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

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 You

We'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 Protection

If 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