Senior OneStream Developer (m/f/d)
For our client, a renowned pharmaceutical company in Basel, we are looking for a Senior OneStream Developer (m/f/d).
Background
We are looking for an experienced OneStream Developer with strong knowledge in system configuration, financial consolidation, and business rules development (C#). Proficiency in VB.NET or C#, SQL, and modern integration methods, as well as hands-on experience with data transformations, reporting, and workflows are essential.
General Information
- Start Date: 01.06.2026
- Latest Possible Start Date: 01.09.2026
- Planned Duration of Employment: 30.08.2027
- Extension: possible
- Workplace: Basel
- Workload: 80-100%
- Home Office: 50%
Tasks & Responsibilities
- Design, develop, test, and deploy OneStream solutions for finance consolidation, Tax (CbCR & Pillar Two), and ESG, including customizations and integrations
- Manage the full project lifecycle from design to go-live and post-implementation support
- Provide technical guidance to colleagues and ensure adherence to best practices and coding standards
- Work closely with functional teams and stakeholders to translate business needs into technical solutions
- Create and maintain technical documentation, including design specifications and test plans
- Provide ongoing support and troubleshooting for OneStream solutions
Must Haves
- Bachelor's degree in Computer Science, Systems Engineering, Information Systems, or related field
- 5+ years of OneStream implementation and development experience (certification preferred)
- Hands-on experience with dimensions, hierarchies, business rules (C#), cube views, dashboards, workflows, and ETL data transformations
- In-depth understanding of financial consolidation and month-end close processes
- Advanced proficiency in VB.NET or C# and SQL
- Familiarity with modern integration methods, APIs, and ETL solutions
- Fluent in English (written and spoken)
- Strong communication, problem-solving, and teamwork skills
Contact
Jan Schmitz-Elsen
Team Lead Talent Acquisition
079 425 10 45
We look forward to receiving your online application along with your resume!
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