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We’re looking for a Backend Software Engineer to join our team and help shape the future of contextual advertising as we continue to expand globally.
Who We Are
Every day, our teams develop new services that reach over 200 million users worldwide with fast response times to ensure that we deliver the best user experience. We’re fully committed to the DevOps culture, where we provide the platform that our Software Developers and Data Scientists use to manage over 100 different microservices, pushing dozens of changes to production every day. All of this is built on top of Kubernetes in Google Cloud Platform and Amazon Web Services.
If you are interested in joining one of the fastest-growing scale-ups in Europe and working on massive scalability challenges, this is the place for you.
Responsibilities




- Design and build backend services and APIs that empower our internal campaign management platform.
- Work closely with product and data teams to understand campaign workflows and pain points.
- Build scalable integrations with third-party platforms such as Xandr and Equativ.
- Model and manage business-critical data (campaigns, bookings, creatives, user access, audits, metrics…).
- Propose technical solutions that are pragmatic, extensible, and sustainable over time.
- Participate in architectural discussions and decision-making within the team.
- Champion engineering best practices and mentor other team members.

What You’ll Need to Succeed
- You have a deep understanding of back-end development with at least 5 years of demonstrable experience building scalable, high-performance systems.
- You care about producing maintainable code and have experience applying programming patterns within a microservice architecture.
- You are a big-picture thinker who can alig

📌 Backend Software Engineer (España)
🏢 Seedtag
📍 España