OneStream Senior Developer This position combines technical development and finance domain expertise, focusing on consolidation, reporting, and data integration within a complex enterprise environment. OneStream Senior Developer Job description: Design, develop, and enhance OneStream solutions for financial consolidation, reporting, and ESG topics Implement business rules (C#) for calculations, validations, and data transformations Build and maintain dashboards, cube views, and reports Develop and optimize data integration and ETL processes Support the full lifecycle from design to go-live and post-go-live support Collaborate closely with finance stakeholders to translate business requirements into technical solutions Ensure system performance, data integrity, and adherence to best practices Contribute to documentation, testing, and continuous system improvements About the customer: We are currently supporting an exciting project within the pharmaceutical industry, looking for a Senior OneStream Developer to play a key role in the design, development, and optimization of a modern financial consolidation platform. Requirements: Bachelor's degree in Computer Science, Information Systems, or a related field 5 years of hands-on experience with OneStream implementation and development Strong expertise in: C# (Business Rules) Financial consolidation processes Data integration and ETL Experience building: Dashboards Reports Workflows and security models Solid knowledge of SQL and modern integration methods (APIs, connectors) Strong analytical and problem-solving skills with a business-oriented mindset Excellent communication skills and ability to work with cross-functional teams Fluent in English Compensation benefits: Long-term project within a global, highly innovative environment Opportunity to work on a state-of-the-art financial consolidation platform High-impact role combining technology and finance Flexible hybrid working model jidf408b93a jit0314a jiy26a