Financial Systems Specialist (OneStream)

Optiver ·Amsterdam, North Holland, Netherlands·Posted 21 October 2026

Apply with a tailored CV View on Optiver 's site

About the role

We are looking for an experienced Financial Systems Specialist with deep technical expertise in OneStream to join our Global Financial Systems team. Working across global platforms and solutions, you will take technical ownership of OneStream, our new group consolidation platform, transitioning ownership from the implementation partner. You will be hands-on in configuring, developing and optimizing the platform, supporting its ongoing operation across consolidation and tax, leading the Phase 2 rollout and shaping the future roadmap. OneStream is the starting point, not the boundary. Beyond establishing ownership of the platform, you will have the opportunity to expand into other global financial systems and broader Finance Technology initiatives, leveraging automation and AI to enhance existing workflows, streamline processes and drive operational efficiency. What you'll do Own and develop the OneStream platform end-to-end , including configuration, metadata, hierarchies, business rules, workflows, integrations and security, ensuring a stable, scalable and well-governed platform. Lead the Phase 2 rollout across Finance and Tax, partnering closely with Group Finance and Tax to…

This is a summary of the advert. The full description and the application are on Optiver 's careers site.

Apply faster with Prepper

A version of your CV tailored to this Financial Systems Specialist (OneStream) role.
A cover letter written from your CV and this advert.
Prepper can fill in Optiver 's application form and send it once you approve.
The application saved in your tracker, with reminders to follow up.

Start free

More roles at Optiver

Prepper is independent and not affiliated with Optiver . Roles are listed from the employer's public careers system and removed when they close.