Onestream System Administrator

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

This position will report to the Global Accounting Compliance Controller and will be responsible for maintaining and managing the Onestream system. You will be responsible for ensuring the integrity, performance, and reliability of the system, troubleshooting and resolving system issues, while also supporting end users and driving enhancements to meet evolving business needs.

Working closely with Finance and IT teams, the Onestream Administrator will contribute to the continuous improvement of financial control and reporting processes, ensuring data accuracy, compliance, and operational efficiency. This includes leveraging automation and emerging AI capabilities, within Onestream and complementary tools, to enhance data quality, streamline workflows, and improve user experience.

The role will also be responsible for producing documentation, developing and delivering user training and driving strategic roadmap development to ensure alignment with business objectives and system evolution.

The role has no direct reports but will be supported by another team member who will assist with day-to-day and BAU (business-as-usual) system administration tasks.