Onestream System Administrator

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.

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.

What you will do

• System administration: Metadata management, User management (set up, disablement, access controls etc), Manage system configuration, Maintain and support manual and automated interfaces and integrations with SAP, Data management, including data loading, validation and reconciliation processes to ensure accuracy across entities and reporting hierarchies, System monitoring and issue resolution – oversee daily system operations, identify, troubleshoot and resolve system issues promptly to ensure smooth operations, Identify opportunities to apply automation or AI-driven controls to enhance accuracy, improve data validation, or reduce manual effort where appropriate.
• User training and support: Act as first point of contact for user queries, Responsible for managing the JIRA ticketing system, Provide structured user onboarding, training and ongoing knowledge sessions, Use AI-enabled tools to enhance training materials, user communications, and documentation where beneficial.
• Process improvement and roadmap development: Identify and implement opportunities to optimize system usage and streamline existing processes, Keep up to date with emerging developments and trends in the Onestream Solution, Exchange with a view to optimize Sophos processes by leveraging the latest functionality, Collaborate with stakeholders to define and maintain a Onestream roadmap, ensuring enhancements align with strategic business priorities, Evaluate and integrate emerging AI capabilities, such as predictive analytics, automated reconciliations, workflow optimization, and intelligent reporting, into the roadmap where relevant.
• Other: Reporting & Analysis: Support the design, development, and maintenance of Onestream reports, dashboards, and templates for reporting. Contribute to opportunities to incorporate AI-assisted insights where appropriate, Upgrades & Enhancements: Assist with system upgrades, testing, and deployment of new features or modules, including those involving automation or AI functionality, Collaboration: Work closely with Finance, IT, and external consultants to ensure the system supports compliance, control, and operational excellence, Documentation: Develop and maintain comprehensive system and process documentation, including user guides, change logs, and configuration records; use AI tools to improve clarity, version control, and efficiency of documentation workflows.

What you will bring

• Essential: Experience in Onestream system administration, Proficient in Excel and other Office 365 applications, Understanding of accounting concepts and principles, Knowledge of core financial processes and best practices, Demonstrated ability to troubleshoot and resolve system issues with the ability to communicate technical concepts to non-technical users, Business partnering experience and managing various stakeholder relationships, Experience in user training and system roadmap development, Experience documenting processes and procedures, Excellent troubleshooting and problem solving skills, Degree level or equivalent.
• Desirable: Exposure to AI- or automation-enabled finance tools, Exposure to other various systems – experience of SAP would be an advantage, Working within a software company, ideally a global organisation and as part of a global finance team supporting global actions and initiatives, Experience supporting system upgrades, testing cycles, or user acceptance testing (UAT), Working on Financial systems projects/ the implementation of Financial systems, Experience with Onestream business rules and building cube views, Project management experience, Degree in Accounting, Finance, Information Systems, or a related field, Professional qualification or part-qualification (ACCA, CIMA) is an advantage.

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.
• 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.