Backend Engineer II (Tracking UI SDK)

TL;DR

Backend Engineer II (Tracking UI SDK): Building high-performance APIs to power native UI SDKs across Delivery Hero brands, focusing on bridging complex global tracking systems and the mobile UI. Focus on designing scalable, low-latency services and partnering with iOS and Android engineers to define robust API contracts.

Location: Onsite in Barcelona, Spain

Company

Delivery Hero is the world’s pioneering local delivery platform, operating in over 70 countries.

What you will do

• Design, build, and maintain the service layer for native iOS and Android Tracking SDKs.
• Partner with mobile engineers to define robust and efficient API contracts (REST) that minimize payload size and latency.
• Ensure the reliability of systems processing billions of events, focusing on high throughput and low-latency response times.
• Collaborate with core Tracking teams to ensure data flows correctly from UI components through services into the global data lake.
• Write clean, maintainable code and ensure high test quality.
• Own the monitoring, alerting, and performance profiling of services using tools like Grafana, Sentry, or Prometheus.

Requirements

• 2-3 years of experience in backend development (preferably using Java/Kotlin).
• Strong experience in building and versioning APIs for mobile clients.
• Solid foundation in software design, data structures, and distributed systems.
• Experience with cloud platforms (AWS/GCP), containerization (Docker/Kubernetes), and CI/CD pipelines.
• Passion for testing (Unit, Integration, and E2E) and a focus on "Definition of Done."
• Full professional English proficiency and a collaborative mindset to work with multi-disciplinary teams.

Culture & Benefits

• Monthly Glovo credits.
• Discounted gym memberships.
• Extra time off, the freedom to work from home two days a week, and the opportunity to work from anywhere for up to three weeks a year.
• Enhanced parental leave, and office-based nursery.
• Online therapy and wellbeing benefits.