Software Development Engineer II

Salary: £70,000 - 110,000 per year

Requirements:

• Bachelors degree in Computer Science or a related technical field, or equivalent related professional experience
• 2+ years of relevant professional experience
• Hands-on experience in backend software development using Java, Scala, Kotlin, or similar languages, and building scalable distributed systems and services
• Practical knowledge of caching technologies such as Redis, Couchbase, or Memcached, and experience with relational and NoSQL databases, API patterns, and service-oriented architectures
• Demonstrated ability to contribute to technical reviews, maintain high coding standards, and thrive in Agile, collaborative team environments
• Experience designing and operating distributed, event-driven systems using Kafka Streams, AWS Kinesis, or similar frameworks
• Proven ability to optimize microservices for low-latency, high-throughput processing at significant scale
• Familiarity with AWS cloud infrastructure, auto-scaling, blue-green deployments, and building and maintaining SLAs, SLOs, and SLIs
• Strong commitment to test-driven development, proactive monitoring, and operational excellence in production environments
• Demonstrated proficiency in safely integrating AI/ML-enabled solutions within backend systems and leveraging AI-driven tools or workflows to enhance real-world product outcomes

Responsibilities:

• Design, develop, and maintain high-throughput, low-latency distributed backend services that deliver efficient, optimal pricing solutions at scale
• Implement robust caching mechanisms to enhance application performance, reduce latency, and optimize resource utilization
• Participate in system design, API design, and data modeling for scalable, reliable microservices
• Contribute to technical documentation, detailed code reviews, and architecture discussions to ensure high-quality solutions
• Analyze complex problems, break them down into manageable milestones, and collaborate with cross-functional teams to deliver sustainable solutions
• Safely integrate and operate AI/ML-enabled solutions that improve outcomes, including familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real-world products

Technologies:

• AI
• API
• AWS
• Backend
• Cloud
• Support
• Java
• Kafka
• Kotlin
• Network
• NoSQL
• Redis
• Scala
• microservices
• Machine Learning
• Spring

More:

We are Expedia Group, a global travel company powered by passionate people, trusted partnerships, and leading technology. We connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business, helping millions of people discover, book, and experience travel with more ease, confidence, and joy. Our five behaviors-Traveler First, Think Big, Operate with Excellence, Ownership Mindset, and Succeed Together-help foster a supportive environment where people can grow their careers and have the flexibility, benefits, and support to do their best work. The role sits within Expedia Product & Technology and the Expedia Group Pricing pillar, based in London, and focuses on building technology that delivers a simple, clear, accurate, and transparent pricing experience for travelers. We operate across Expedia, Hotels.com, and Vrbo, alongside our B2B travel business and travel advertising offerings, and we are committed to an inclusive and accessible recruiting experience as well as an inclusive work environment.

last updated 36 week of 2026