Staff Engineer - OnArrival

About Company: OnArrival

OnArrival is redefining the travel tech industry by building the world’s most advanced full-stack travel platform. We provide seamless, intelligent travel infrastructure, powering everything from flights and hotels to baggage insurance. Unlike traditional aggregators, OnArrival deeply integrates with suppliers, offering a next-generation API and SDK solution that simplifies travel technology for fintech’s, OTAs, and enterprises.

Role Overview:

We are looking for a Staff Backend Engineer to work with the Hotels division, responsible for building and scaling our hotel booking and aggregation system. You will work on high-scale, low-latency distributed systems that integrate with multiple hotel suppliers, channel managers, and property management systems. This role requires expertise in architecting, designing, and implementing high-performance backend services that can handle millions of hotel searches and transactions in real-time.

Key Responsibilities:

  • Architect and Scale: Design and optimize On Arrival’s hotel infrastructure to handle high traffic, ensuring fault tolerance, security, and resilience.
  • API Development: Build and enhance high-performance RESTful and GraphQL APIs that power our hotel module.
  • Supplier Integrations: Integrate and optimize connectivity with global hotel suppliers, aggregators, and direct properties to ensure the best inventory and pricing.
  • Metadata & Search Optimization: Design caching and data indexing strategies using Redis, Elasticsearch, and MongoDB to deliver ultra-fast property search results.
  • Reliability and Observability: Implement distributed tracing, logging, and monitoring to ensure system reliability.
  • Security & Compliance: Ensure adherence to SOC 2, ISO, and PIPA security standards, with a focus on data localization.
  • Collaboration: Work closely with product, frontend, and infrastructure teams to enhance the hotel booking experience.
  • Mentorship: Guide and mentor junior engineers, fostering a strong engineering culture within the team.

Requirements:

  • 8+ years of experience in backend engineering with expertise in Kotlin (preferred) or Java.
  • Strong background in designing high-scale distributed systems and microservices.
  • Deep understanding of MongoDB, Redis, ElasticSearch, and event-driven architectures (Kafka or Confluent).
  • Experience working with hotel industry standards such as channel managers, PMS APIs, and hotel supply aggregators (Hotelbeds, DerbySoft, RateGain, etc.).
  • Strong focus on API performance, security, and observability.
  • Experience with cloud-native architectures on AWS/GCP.
  • Familiarity with CI/CD pipelines, Kubernetes, and DevOps best practices.
  • Previous experience leading teams or mentoring engineers is a plus.

Why Join Us?

  • Be part of a cutting-edge travel tech company that is redefining the industry.
  • Work on a high-scale platform that integrates with global travel suppliers.
  • Competitive salary, stock options, and remote-friendly work culture.

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