C

Backend Engineer

Calyptus

, , portugal, , , portugal, Portugal Full-time June 23, 2026

Found Description

Backend Engineer

We are seeking an experienced Backend Engineer who is excited to build the technical backbone of a new generation travel platform. You’ll work with Java and Spring Boot to design and implement scalable, resilient backend services, and use databases like MySQL, MongoDB, and ElasticSearch to power search, personalization, and booking flows. Familiarity with Linux systems, AWS, and microservices architecture will help you ship reliable systems at scale.

Core Responsibilities

  • Design, develop, and scale backend systems using Java and Spring Boot.
  • Create low-latency search infrastructure (ElasticSearch, caching, query optimization).
  • Build and maintain supplier integrations across hotels, chains, and experiences, ensuring stability and fault tolerance.
  • Implement real-time personalization and ranking logic to improve customer discovery and booking conversion.
  • Enable AI-powered experiences by buildi...

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