Senior DevOps Engineer

3 reasons you should join our team as Senior Devops Engineer Design and own infrastructure, don’t just maintain it. We want builders, not ticket handlers. Work on mission-critical systems that process billions in marketplace transactions with real impact. Collaborate with a tight-knit team that values learning from mistakes over pointing fingers and lets you be your authentic self. At OPP, we're building the infrastructure backbone for Europe's leading marketplaces, and we need a technical pioneer who gets excited about both system architecture and teamwork to support us. Unlike traditional roles where you're maintaining someone else's infrastructure, you'll be designing and maintaining everything from scratch. Our secret? We keep all infrastructure in-house, giving you maximum impact and endless opportunities to think of new solutions. Take our platform to the next level When millions of users trust platforms like Marktplaats and Nature.house with their payments, your infrastructure makes it possible. You’ll be working with a sophisticated AWS environment that combines EC2 instances and Kubernetes clusters, backed by MySQL, OpenSearch, and Redis. Think scalable GitLab CI/CD, Terraform for infrastructure as code, and Lambda functions - all powering billions in yearly transactions. Depending on your expertise and interests, you’ll dive into: Designing and implementing cloud solutions from scratch Driving our AWS architecture forward with real ownership Building new workflows, monitoring, testing performance and adopting fit-for-purpose tech Owning critical CI/CD and release processes Your track record tells us This role is not about tickets and monitoring only, it’s about real architectural decisions and building systems that matter. At least 5 years of relevant experience You’ve designed and owned AWS infrastructure in production (not just operated it) You have experience with high-traffic, mission-critical platforms Deep knowledge of automation and infrastructure design Experience with GitLab CI/CD, AWS, Monitoring (CloudWatch, Prometheus and Grafana stack), Terraform (or CloudFormation) and preferably Kubernetes Ability to keep infrastructure stable, scalable, secure, and performant You understand application testing and system dependability Our offer An all-in annual salary between €55.000 and €100.000 A modern, flexible workplace with hybrid working. 24 vacation days and 2 Diversity Days⚡. 12-month contract with the possibility of extension and finally a permanent contract. The tools you need: a MacBook, €1000 for your home office setup, and NS Business Card. An attractive bike plan if you work 24 hours or more. A developers-only office at Lange Geer 26, within walking distance of our sales and product teams in the heart of Delft. A great work atmosphere with catered lunches and regular team drinks. From contact to contract Inclusion matters at OPP At OPP, we believe that different perspectives make better decisions. We are a diverse team and value you for who you are, not just your CV, so we encourage you to apply even if you don't check every box. We are committed to building an inclusive environment where everyone can make an impact. If you need any adjustments or accommodations to participate fully in our recruitment process, please let us know so we can support you. Ready to supercharge yourself? Let’s talk! We’ll tell you everything you need to know. Send your CV or get in touch with our tech recruiter Georgios Apostolou at [email protected] . Hiring for this position is ongoing, so you may have seen this vacancy before. We are continuously expanding our engineering team and are always interested in connecting with ambitious experienced professionals. 👋 it's me Mike , your hiring manager for this role Curious to hear how you can keep our infrastructure performant and scalable in the future.