Offer summary

Qualifications:

Minimum of 5 years of experience in modern C++ programming., At least 2 years of experience with Windows kernels and internals., Deep understanding of Windows internals such as file systems, memory management, and networking., Hands-on experience with Windows kernel driver development and debugging..

Key responsibilities:

Design and implement core components for the Windows agent with high concurrency and low system impact.

Develop and maintain Windows kernel-mode drivers and user-mode services.

Analyze and debug complex system issues, including crash dumps and low-level tracing.

Collaborate with teams to build next-generation endpoint detection capabilities.

Job description

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 AIoptimized services, technologies and products. Sophos is now the largest pureplay Managed Detection and Response (MDR) provider, supporting more than 28,000 organizations. In addition to MDR and other services, Sophos’ complete portfolio includes industryleading endpoint, network, email, and cloud security that interoperate and adapt to defend through the Sophos Central platform. Secureworks provides the innovative, marketleading Taegis XDRMDR, identity threat detection and response (ITDR), nextgen 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 statesponsored cybercrimes. The solutions are powered by historical and realtime threat intelligence from Sophos XOps and the newly added Counter Threat Unit (CTU). Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com.

Role Summary
We’re looking for a Senior Software Engineer 2 with deep expertise in Windows internals and lowlevel development to join the team. This highperformance software captures and analyzes malicious behavior and endpoint activity, delivering rich telemetry for realtime threat detection in the cloud.

You’ll work closely with engineers, researchers, and security experts to build new capabilities for our Windows agent, spanning both usermode and kernelmode. If you’re passionate about building performant, resilient software at the OS level, this is the opportunity for you.

What You Will Do
Design and implement core components for our Windows agent with high concurrency and low system impact
Develop and maintain Windows kernelmode drivers and usermode services
Analyze and debug complex system issues, including crash dumps and lowlevel tracing
Collaborate with product and engineering teams to build nextgeneration endpoint detection capabilities
Build tools to support internal workflows and contribute to automated testing
Follow best practices for software quality, code reviews, and secure development
Contribute to a crossplatform development effort alongside Linux and macOS teammates

What You Will Bring
Minimum of 5 years of experience in modern C++
Minimum of 2 years of experience in Windows kernels and internals
Deep understanding of objectoriented design
Handson experience with Windows kernel driver development
Strong debugging skills and experience with crash dump analysis
Solid knowledge of Windows internals:
File systems, memoryprocessthread management, networking stack
Event Tracing (ETW), hooking, or instrumentation
Familiarity with x86x64 Assembly
Experience with any of: Winsock, WSK, Win32, microkernels, nanokernels
BS in Computer Science or equivalent experience
In the United States, the base salary for this role ranges from $149,000 to $248,000. 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 jobrelated skills, training, location, experience, relevant education, certifications, and other business and organizational needs.

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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 dont 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. Dont let a checklist hold you back – we encourage you to apply.

Whats Great About Sophos?· Sophos operates a remotefirst working model, making remote work the primary option for most employees. However, some roles may necessitate a hybrid approach. Please refer to the location details in our job postings for further information.
· Our people – we innovate and create, all of which are accompanied by a great sense of fun and team spirit
· Employeeled 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