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 Specialist, 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.

Your track record shows

• That you have at least 5+ years of experience in the field of software/SaaS/ fintech implementations.

• You’ve owned end-to-end integration projects, ideally involving APIs and complex data flows.

• You’re comfortable working with tools like Postman, SQL, HTML, PHP, or similar (and know when to go deep vs delegate).

• You speak both tech and business: translating technical requirements into actionable implementation plans.

• You're fluent in English and Dutch - both verbally and & written. Speaking German or French is a big plus.
  

How we invest in you

A company is as strong as the people who help to build it. If you bring the expertise and a client-first mentality, we’ll make sure you receive all that’s needed to excel. We’ll offer you:

• A solid base salary + 13th months

• Hybrid working, 24 paid vacation days, and 2 diversity days.

• Contract for 12 months with the possibility to extend permanently - we’re in this for the long haul!

• Macbook, pension contributions, home office gear, and NS Business card.

• Office lunches plus regular get-togethers over drinks.

From contact to contract

Ready to supercharge yourself?

Send your credentials our way and let’s talk. More info? Direct your questions to Julia van Baren at julia.vanbaaren@onlinepaymentplatform.com. Or give her a call first at +316 48 41 90 11.

👋 it's me Thomas, your hiring manager for this role

"I'm looking for someone who will turn our clients into happy company ambassadors. Ready to hear about your best practices!"