OneStream Application Manager

Job Applicant Privacy Notice Publication Date: Aug 7, 2026 Ref. No: 548013 Location: About Atos Group Atos Group is a global leader in digital transformation with c. 56,000 employees and annual revenue of c. €7.2 billion (at the go-forward perimeter), operating in 54 countries under two brands - Atos for services and Eviden for products and systems. European number one in cybersecurity and a leader in cloud, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE listed on Euronext Paris. The purpose of Atos Group is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space. Service Manager | OneStream Application Manager – Consolidation & Group Reporting About the role We are looking for an experienced IT Application Manager (Service Manager) to take ownership of our Consolidation and Group Reporting solutions. In this role, you will ensure that our systems are stable, secure, and aligned with business needs, while continuously improving processes and tools. You will collaborate closely with Finance and reporting teams to support critical financial workflows. Key responsibilities Manage and own IT applications supporting Group Consolidation and Reporting, with a focus on OneStream and similar tools (e.g., Oracle HFM, Oracle EPM Cloud) Work closely with Finance and Group Reporting teams to gather requirements and translate them into technical solutions Lead application lifecycle activities, including implementation, upgrades, maintenance, and ongoing support Drive process improvements and automation within consolidation and reporting processes Manage relationships with vendors and coordinate work with external consultants when needed Ensure data accuracy, system security, and compliance with internal controls and audit requirements Provide training and support to key users and stakeholders Monitor system performance and proactively identify and resolve issues or areas for improvement What you need to succeed Proven experience in IT application management within Finance or Group Reporting environments Good understanding of consolidation processes, including intercompany eliminations and financial reporting Hands-on experience with OneStream is highly preferred; experience with Oracle HFM, Oracle EPM Cloud, or similar tools is also welcome Strong project management skills and experience working with cross-functional teams Very good communication skills and ability to work effectively with stakeholders Fluent English What do we offer: Hybrid work you can truly shape – friendly model designed for real work‑life balance (max. 2 office days per month, depending on location). A role with real ownership – you will take responsibility for consolidation and group reporting applications used across the organization. Choose the cooperation model that fits you – Employment Contract or B2B. Fair compensation – salary aligned with your experience + annual bonus. Flexibility that works in practice – remote work options and a setup that supports independent work. Grow in your direction – access to trainings, certifications and internal mobility opportunities. Private medical care – because stability and security matter. Benefits platform – including shopping, culture and leisure options. Stay active your way – co-funding for Multisport and wellbeing initiatives. Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all. Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment. Choose your future. Choose Atos.