Site Reliability Engineer /Cloud

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.

Role Summary

Central Operations is responsible for delivering the infrastructure to provide customer facing systems and cloud services to Sophos customers. The job role requires skill with Linux, cloud computing, automation, CI/CD pipelines, containerized environments and incident management response.

What you will do

• Carry personal responsibility for high quality changes to a live IT / SaaS infrastructure

• Manage key operational systems on which millions of customers depend

• Create estimates and work plans then deliver according to those plans in an agile manner

• Participate in a weekday / weekend on-call rotation

• Occasionally carry out changes outside of normal working hours

• Monitor existing infrastructure, identify areas of weakness and propose improvements

• Take corrective action, as a first point of contact, to resolve incidents escalated from Technical Support, IT and development communities and escalate where appropriate

• Provide incident response and coordination, ensuring issue resolution and helping co-ordinate multiple resources

• Publish software updates as required meeting product release schedules, monitoring load on infrastructure and support, taking corrective action where possible and flagging issues with management

What you will bring

• 2-4 years of hands on technical knowledge with Amazon Web services (AWS)

• Knowledge of AWS services including EC2, ECS, EKS, IAM, CloudWatch, SQS, SNS, SSM, S3 and Secrets Manager

• Proficient with AI-assisted development tools (e.g., Claude Code, GitHub Copilot, Cursor) and able to apply them responsibly to improve productivity

• Knowledge of CI/CD pipelines such as Jenkins / GitHub Actions or equivalent

• Experience with Infrastructure-as-Code tools with Terraform or equivalent

• Familiarity with Database(s) e.g. MySQL, PostgreSQL, RDS, Mongo NoSQL

• Monitoring and Alerting Tools such as PagerDuty, Datadog, CloudWatch, Logz.io or equivalent

• Experience with Bash and python scripting

• IP networking - LAN & WAN

• Ability to adapt to new technology

• Strong communication skills both verbally and in writing

• Knowledge of malware/spam/network threats

• Ability to interface with Senior Leaders

• Comfortable working in a detailed driven environment

• Familiarity with GenAI tools such as GitHub CoPilot, Cursor

• Exposure to compliance frameworks (SOC2, FedRamp, etc.)

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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