Staff Engineer - Hotels (Backend)

About OnArrival Travel: 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 fintechs, 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 OnArrival’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.

• 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.

• 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.