Senior Python Developer (Backend)

We are looking for a Senior Python Developer to join our team in AMS!

This is a hybrid role, and we are accepting applications from candidates based in the Netherlands.

The Manufacturing Partner Marketplace is the operational heart of Protolabs Network. We own the full order lifecycle - matching orders to the right manufacturing partners, moving them through production and quality control, and ensuring on-time delivery. Our work is critical to maintaining seamless operations and customer satisfaction.

Within this domain you'll be building systems that power the marketplace - automated auctions, order allocation, supplier tooling, production workflows, global logistics, quality control, and internal ops tools. We are looking for a pragmatic problem solver who will thrive in a dynamic environment and can take ownership of the business problem, not just the technical solution.

Our Tech Stack

• Backend: Python 3.11 + with FastAPI, Flask and SQLAlchemy (we also use Celery with RabbitMQ for background tasks and KNative for eventing)
• Frontend: Angular 15 with TypeScript
• DevOps: Kubernetes on AWS (using EKS), Terraform, GitHub Actions
• Data: PostgreSQL (on RDS), Redis (using Elasticache)
• Integrations: Retool and Zapier
• (Some teams also use Rust, Java, and C++)

Sounds interesting? Apply now!

What you’ll do

• Lead the design and delivery of features end to end, working cross-functionally with stakeholders to solve complex marketplace problems
• Build APIs and backend systems that power the order lifecycle from supplier matching to delivery
• Drive architectural decisions and improve the technical foundations of our platform
• Mentor engineers and raise the bar on engineering practices within the team
• Integrate with eventing systems and scale our platform as order volume grows
• Improve the quality of our products through testing, observability, and best practices
• Collaborate with our Backend guild to set standards and improve the state of our backend systems.

What you’ll bring

• 7+ years of experience building web applications and backend services
• Strong proficiency in Python for designing, developing, testing and monitoring production systems
• Experience with relational databases like PostgreSQL
• Experience with Docker, Kubernetes, and CI/CD environments
• Track record of leading technical projects and mentoring other engineers
• Experience working in an agile team with product managers and designers
• Excellent communication and collaboration skill

Bonus Points For

• Experience with marketplace platforms or operational systems
• Deep understanding of event-based architectures
• Familiarity with Angular

What's in it for you?

• Part of our incredible journey is clearly down to our amazing team, and we strongly believe in giving people a space to truly, authentically be themselves. We also believe that treating our employees well and sprinkling a great place to work with some nice perks can make work a little sweeter.
• Annual company bonus. We celebrate success together! Employees are not only rewarded for their achievements but also for contributing to the overall success of the business.
• Wellness and well-being with access to OpenUp psychologists, practice mindfulness with Headspace and tons more.
• Doggo-friendly office. We are big pet lovers and fully encourage hanging out with your (and your colleagues’) furry friends in the office
• Daily Lunch and snacks are provided in the office; it's a moment for our teams to connect and recharge. Shared meals strengthen our bonds and fuel collaboration.
• We offer learning and development days to be used for training or on volunteering, money to spend on learning courses, events, trainings, Access to our in-house LEARN platform with diverse courses, training, and workshops, In-house 3D Printing and much more!
• Follow us on Instagram to see what Life at Protolabs is all about!