Senior Implementation Manager

Confidential

Delft, Zuid-Holland, Netherlands permanent

Posted: January 30, 2026

Job Description

3 reasons you should join our team as a Senior Implementation Manager:

1. You’ll work at the intersection of fintech innovation and platform scalability. Helping shape the future of digital payments.
2. You lead complex technical implementations from kickoff to go-live with full ownership and autonomy.
3. You’ll work in a team that values action, speed, and results - where your work directly contributes to making online transactions easier and safer for millions of users.

OPP is not just a powerful payment solution - we’re one of the fastest-growing fintechs in Europe. In 2016 we were 5 people and some nerf guns. Today, we’re 100+ people across offices in Delft, Berlin, and London. Fully backed by Worldline but still in the driver’s seat - with no plans of slowing down any time soon. Join us in supercharging marketplaces around the globe. We’re hiring a Senior Implementation Manager!

Make paying online easy and safe for everyone
If you’ve ever paid other users on platforms like Marktplaats, eBay-Kleinanzeigen, and IKEA, or booked a holiday home via Nature.house or Micazu - chances are you’ve already met us. Our fintech platform powers marketplaces. Not just by arranging payments - it also allows marketplaces to accept, hold, and disburse funds for their users. That makes our solution a bit more sophisticated, yet ready to continue growing internationally.

As a Senior Implementation Manager, you lead high-impact integrations from scoping to post-launch success. Translating complex client needs into clear technical solutions. You’ll dive into API configurations, act as the voice of our developers, and bridge the gap between business and tech. Working closely with our compact tech and sales teams, you’ll empower clients like eBay, Marktplaats, and ANWB to make our platform their own. Once the solution is defined, you’ll handle the technical delivery: configuring modules, refining documentation, and shaping our API sandbox. All compared, you will be focussing on:

• Technical Configuration of modules and features within our solution.

• Working on our documentation and instructions about our API.

• Contributing to the introduction of an API-sandbox.

• Moderating our partner-contact Slack channels.

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