As a Senior Quality Engineer, you'll lead quality assurance for Sophos' cybersecurity products, develop test plans, drive automation strategies, and ensure system performance across complex distributed architectures while collaborating with engineering teams.
About Us
Sophos is a cybersecurity leader defending 600,000 organizations globally with an AI-driven platform and expert-led services. Sophos meets organizations wherever they are in their security maturity and grows with them to defeat cyberattacks. Its solutions combine machine learning, automation, and real-time threat intelligence with frontline human expertise from Sophos X-Ops to deliver advanced, 24/7 threat monitoring, detection, and response.
Sophos offers industry-leading managed detection and response (MDR) alongside a comprehensive portfolio of cybersecurity technologies — including endpoint, network, email, and cloud security, extended detection and response (XDR), identity threat detection and response (ITDR), and next-gen SIEM. Together with expert advisory services, these capabilities help organizations proactively reduce risk and respond faster, with the visibility and scalability needed to stay ahead of evolving threats.
Sophos goes to market with a global partner ecosystem, including Managed Service Providers (MSPs), Managed Security Service Providers (MSSPs), resellers and distributors, marketplace integrations, and cyber risk partners, giving organizations the flexibility to choose trusted relationships when securing their business. Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com.
As a Senior Quality Engineer, you will lead and drive quality across our security product portfolio, including ZTNA, Enterprise Browser, Firewall, and DNS solutions. This role owns end‑to‑end quality while partnering closely with engineering, product, and platform teams, and plays a critical role in validating performance, longevity, and real‑world customer impact across highly complex, distributed systems.
What you till do
- Develop comprehensive test plans and test strategies; design and execute test cases based on high‑level requirements and use cases
- Design, build, and maintain automation frameworks for API, backend, and system‑level testing
- Contribute to and help drive the QE strategy with a focus on scalability, performance, and long‑running system validation
- Identify, document, and track defects, driving them to closure in partnership with engineering teams
- Actively participate in design and architecture discussions, providing testability and quality feedback early
- Embed quality early through shift‑left testing practices, design reviews, and use of modern testing tools
- Validate system behaviour across large tenant volumes, high throughput, and long‑running scenarios
- Represent the engineering team in customer discussions or onsite engagements, as required
- Serve as a quality advocate, evangelizing the importance of product quality across teams
- Act as a quality activity initiator and driver within feature teams
- Partner closely with developers to improve test coverage, observability, and defect prevention
- Quickly learn and understand complex systems and diagnose technical issues effectively
- Demonstrate strong troubleshooting, problem‑solving, and analytical skills
- Prioritize work effectively, maintain focus, and drive tasks through to completion in a fast‑paced environment
What you will bring
- 8–10 years of total work experience with strong hands‑on expertise in the SASE domain
- Solid understanding of cloud‑native architectures across AWS, Azure, and GCP
- Proven experience designing and driving automation‑first testing strategies and QE architecture
- Exposure to or hands‑on experience with AI‑assisted test automation tools is preferred
- Strong foundation in operating systems and network security concepts
- Prior hands‑on experience with networking technologies and protocols, including HTTP, TCP/IP, UDP, DHCP, DNS, proxy servers, and load balancers
- Hands‑on experience with performance and scalability testing tools such as JMeter, Gatling, Locust, or equivalent
- Understanding of multi‑platform environments, including UNIX/Linux, macOS, and Windows
- Familiarity with observability practices and tools, including logs, metrics, and distributed tracing
- Experience validating identity‑centric workflows, including integrations with Microsoft Entra ID (Azure AD)
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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?
· 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 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
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