Principal Software Engineer - Sophos

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 Summary

Our Sophos ZTNA Team is looking for developers who possess excellent programming skills and have prior experience in network security field. We are looking for a backend developer for managing and advancing our cloud-based network security platform that handles tens of thousands of devices and customers. You will build features from the ground up using sound design principles around security and scale.

What you will do

• Be able to interact with product managers to define the feature and write clear functional specs.
• Work with the frontend team to define the API contracts for the backend services.
• Work on critical field escalations and drive closure.
• Work on prototypes that are pre-cursors to features on the product roadmap

What you will bring

• Must have 12+ years of progressive experience in enterprise architecture, with hands-on leadership across business, application, data, and technology domains
• 5+ years’ experience working with commercial software using Golang/C/C++/Java.
• 2+ years’ experience working with containers & microservices (e.g., Docker, Kubernetes environments).
• Data plane experience working with Forward/Reverse proxy is preferred
• In depth knowledge of different networking protocols (e.g. HTTP/HTTPS, TCP/IP)
• Excellent design skills using principles of reuse, modularity, scale, etc.
• Excellent understanding of data structures and algorithms.
• Good understanding of, Mic