Key Skills

Job Description

At a glance Function IT Enterprise Applications / Finance Systems Role family Professional / Senior Professional Reports to Functional Product Owner Finance Location Flexible within Europe Key interfaces Finance, Controlling, FP&A, IT, external implementation partners and enterprise integration teams Position purpose The OneStream Developer is responsible for the design, development, enhancement, integration, and ongoing support of the OneStream Corporate Performance Management (CPM) platform. This role ensures that OneStream solutions meet business requirements for Financial Planning & Analysis (FP&A), Consolidation, Reporting, Forecasting, and Financial Data Management. The successful candidate will develop custom business functionality, automate financial processes, build integrations with enterprise applications, and contribute to the continuous improvement of the OneStream platform. The role requires strong .NET development expertise, database knowledge, and experience with modern software development practices. Key Responsibilities Application Development & Customization Design, develop, and maintain custom OneStream solutions. Create and enhance Business Rules, Calculations, Workflows, Dashboards, and Data Management processes. Develop automation solutions to improve financial processes and reduce manual effort. Implement custom functionality using OneStream extensibility features. Support enhancements related to Financial Consolidation, Planning, Budgeting, Forecasting, and Reporting. Technical Development Develop custom Business Rules and application extensions using C# and VB.NET. Build, test, and deploy .NET-based solutions within the OneStream platform. Create automation routines, calculations, and validation logic supporting business requirements. Optimize application performance and troubleshoot complex technical issues. Ensure maintainable, scalable, and secure coding practices. Data Integration & Data Management Design and maintain integrations between OneStream and enterprise systems such as: SAP S/4HANA, SAP ECC, Data Warehouses, HR Systems, Treasury Applications and other Finance Applications Develop and maintain ETL processes and data pipelines. Write and optimize SQL queries, procedures, and data extraction routines. Support master data management and data governance activities. Ensure data quality, reconciliation, and integrity across all connected systems. DevOps & Release Management Utilize modern development environments including: Visual Studio, Visual Studio Code, OneStream Developer Studio Apply source control and version management using Git. Support CI/CD processes and structured release management. Participate in testing, deployment, and production support activities. Maintain technical documentation and development standards. Support & Stakeholder Collaboration Collaborate with Finance, Controlling, FP&A, IT, and external implementation partners. Analyze business requirements and translate them into technical solutions. Provide third-level technical support for OneStream incidents and enhancements. Participate in project initiatives, upgrades, and platform optimization activities. Support system audits, compliance requirements, and internal controls. Required Qualifications And Experience Education Bachelor's or Master's degree in: Computer Science / Information Technology /Software Engineering / Business Information Systems or a comparable discipline 3+ years of software development experience Experience with CPM, EPM, or Financial Systems implementations. Hands-on experience with OneStream development is preferred. Experience supporting Finance applications within an enterprise environment. Required Technical Skills Development Strong proficiency in: C# VB.NET .NET Framework / .NET Core Experience developing: Custom Business Rules Calculations Workflows Automation solutions Application extensions Data & Integration Strong SQL development skills. Experience with relational database platforms such as: Microsoft SQL Server Oracle Snowflake (preferred) Experience designing ETL and data integration processes. Understanding of API and enterprise application integration concepts. Tools & Development Environment Proficiency with: Visual Studio Visual Studio Code Git Azure DevOps (preferred) OneStream Developer Studio Experience with source control, code reviews, and release management processes. Understanding of CI/CD concepts and deployment automation. Finance & Business Understanding Understanding of: Financial Consolidation Management Reporting Budgeting & Forecasting Financial Planning & Analysis (FP&A) Corporate Performance Management (CPM) Competencies Strong analytical and problem-solving skills. Excellent communication and stakeholder management capabilities. Ability to work independently and within cross-functional teams. Attention to detail and commitment to high-quality delivery. Continuous improvement mindset. Ability to manage multiple priorities in a dynamic business environment. Preferred Qualifications OneStream Certified Professional. Experience with SAP S/4HANA integration. Experience in a multinational manufacturing or consumer goods environment. Knowledge of cloud technologies and Azure platforms. Familiarity with financial data governance and compliance requirements. Success Measures The OneStream Developer will be successful when: OneStream applications operate reliably and efficiently. Financial processes are automated and standardized. Integrations deliver accurate and timely data. Enhancements are delivered according to agreed timelines and quality standards. Business stakeholders experience improved reporting, planning, and consolidation capabilities. Technical debt is minimized through adherence to development standards and best practices. Refresco Leadership Expectations The role holder demonstrates ownership, accountability, collaboration, continuous improvement, customer focus, and a commitment to delivering business value through technology-enabled financial solutions. What We Offer You. At Refresco, we believe that your work should be rewarding, both professionally and personally. That’s why we offer you: Competitive pay with eligibility for an annual bonus No personal pension contribution – your pension is fully paid by Refresco 28 days of holiday (based on full-time employment) to recharge and enjoy your time off Continuous opportunities to develop yourself, with access to tailored courses, interactive e-learnings, Free access to OpenUp for you and your family members, supporting mental well-being and personal development A modern office nearby the vibrant city of Rotterdam Fun and connection through regular events organized by our enthusiastic Fun Committee Opportunities for professional development and training to help you grow in your career An NS Business Card or commuting allowance, making your journey to the office more convenient Memorable moments together, from our weekly shared Thursday lunches to annual events like Wellbeing Week, the Christmas dinner, and our Holding trip. A culture shaped by our core values: entrepreneurial, passionate, agile, responsible and excellent. Recruitment process Are you interested in this open position, feel free to send your application! To ensure a fair and thorough selection, an assessment may be conducted as part of the recruitment process. In case of any questions with regards to the position, you may reach out to Yasimin Harput (Corporate Recruiter Group/HQ)E-mail: [email protected] Important to know: We are currently unable to offer relocation support for this position. Candidates must be based locally in The Netherlands.

Core Responsibilities

Design, develop, integrate, and support OneStream solutions for financial planning, consolidation, reporting, forecasting, and data management. Build and maintain custom .NET functionality and data integrations, optimize platform performance, and collaborate with Finance, IT, and implementation partners on delivery and support.

Requirements

Requires a bachelor's or master's degree in a relevant discipline, at least three years of software development experience, and strong C#, VB.NET, .NET, SQL, and data integration skills. Experience with CPM, EPM, or finance systems is expected; hands-on OneStream development is preferred, along with knowledge of financial processes and modern development and release practices.

Benefits

• Annual Bonus Eligibility
• Fully Paid Pension
• 28 Days of Holiday
• Professional Development and Training
• Mental Well-Being Support
• Commuting Allowance or Business Travel Card
• Company Events and Activities