Site Reliability Engineer (SRE)

Job Description

3 reasons why you’ll fit right into our technology team

You know that feeling — the “yeah!” when your code goes live and instantly impacts millions of users. That’s exactly what we’re looking for.

You see that the future of e-commerce lies with marketplaces — and you want to help build the financial infrastructure that makes this possible.

You thrive in an environment that’s all about tech. That’s why we’ve transformed an entire location into a tech-only office with all the tools, inspiring workspaces, and (not unimportant) the best coffee in Delft.

What you’ll do as a Site Reliability Engineer at Online Payment Platform

What started with five people, a small office, and a couple of Nerf guns has grown into one of Europe’s fastest-growing fintechs. With 100+ colleagues, offices in Delft, Berlin, and London, and Worldline as a partner, we have the perfect mix: the resources of a global player, combined with the energy of a scale-up. At OPP, we build the technology that powers the next generation of e-commerce. From eBay to IKEA: billions of transactions already run through our systems. We don’t just process payments — we make it possible for platforms to receive, manage, and pay out funds. As a Site Reliability Engineer, you’ll be responsible for maintaining, scaling, and improving the reliability and performance of our platform and infrastructure. You’ll make sure our systems run smoothly and continuously improve them. Your work will have a direct impact on millions of users who rely on our payment technology every day.

Your impact

Build and maintain monitoring and alerting systems to track the performance of our infrastructure.

Automate incident response, monitoring, and workflows for on-call support.

Optimize the scalability and performance of our platform by identifying and resolving bottlenecks.

Ensure compliance with security standards, audits, and regulatory requirements.

Implement disaster recovery and high availability solutions.

Participate in on-call rotations and handle escalations during incidents.

Job requirements

Your profile

Minimum of 4 years’ experience in a similar role

Bachelor’s degree or higher (or equivalent work experience)

Experience with AWS cloud infrastructure

Knowledge of observability and monitoring tools

Experience with Infrastructure as Code (Terraform)

Understanding of performance tuning \& scaling

Familiarity with security best practices, secrets management, and compliance auditing

Experience with incident management and troubleshooting

Knowledge of disaster recovery and high availability solutions

For this position, we are looking for someone residing in the Netherlands

What We Offer

If you bring the skills and customer-first mentality, we offer you:

A solid base salary, 13th month \& NS Business Card.

An attractive bike plan if you work 24 hours or more.

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

12-month employment contract with the possibility to extend.

Macbook, pension contributions, and home office gear.

Very short communication lines: we like to keep it personal!

Office lunches plus regular get-togethers over drinks

A developers-only office at Lange Geer 26, within walking distance of our sales and product teams in the heart of Delft

From contact to contract

Want to know more about our projects?

Let’s talk! We’ll tell you everything you need to know. Send your CV or get in touch with our tech recruiter Gijs Cooijmans at gijs.cooijmans@onlinepaymentplatform.com or +31 6 20019821.

👋

Hey! I’m Mike, CTO at OPP and your hiring manager for this role.

“Did you know that our APIs are called millions of times a day? Help us keep our platform lightning fast - let’s meet!”