Software Development Engineer II

Expedia, Inc.; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Expedia Group is seeking a Software Development Engineer II (Backend) to design and build high-throughput backend services for pricing. You will implement cache layers and participate in API design and data modeling for scalable microservices.

The role emphasizes hands-on development with Java/Scala/Kotlin, distributed systems, and collaboration across cross-functional teams to deliver reliable pricing capabilities.

Qualifications

• Bachelor’s degree in Computer Science or equivalent professional experience.
• 2+ years of relevant professional experience.
• Hands-on backend development with Java/Scala/Kotlin or similar languages and building scalable distributed systems.

Responsibilities

• Design, develop, and maintain high-throughput, low-latency backend services for pricing at scale.
• Implement robust caching to improve performance and reduce latency.
• Participate in system design, API design, and data modeling for scalable microservices.

Skills

Java

Scala

Kotlin

Distributed systems

Caching

Education

Bachelor’s degree in Computer Science

Tools

Redis

Couchbase

Memcached

Kafka Streams

AWS Kinesis

Job description

At Expedia Group, we help travelers explore the world, one journey at a time. As 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.

Here, you'll do meaningful work that helps 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. Join us and build for travelers everywhere.

Software Development Engineer II (Backend)

Expedia Product & Technology builds innovative products, services, and tools to deliver high-quality experiences for travelers, partners, and our employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalized experiences for the traveler and our partners that drive loyalty and customer satisfaction.

The Expedia Group Pricing pillar is tasked with giving the customer a simple, clear, accurate, transparent pricing experience throughout their shopping and booking journeys. We do this by putting the customer first, creating capabilities and experiences that can be shared and presented to the customer that meet the travelers’ expectations in locally relevant ways and adhere to regulatory norms.

The pricing platform supports millions of users every year in finding suitable travel products using technologies such as Java, Scala, Kotlin, Spring, MSSQL, DynamoDB, Redis, etc. We encourage experimentation with new technologies while maintaining a healthy balance between short- term and long-term goals. We deeply care about building a great experience to delight our customers. Our goal is to enhance every traveler's experience and make it better!

In this role, you will:

• 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.

Minimum Qualifications:

• Bachelor’s 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 (e.g., Redis, Couchbase, 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.

Preferred Qualifications:

• Familiarity with AWS cloud infrastructure, auto-scaling, blue-green deployments, and building/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.

Accommodation requests

Expedia Group is committed to providing an inclusive and accessible recruiting experience. If you need an accommodation or adjustment due to a disability during the application or recruiting process, please submit a request at https://expedia.service-now.com/askeg?id=job_accommodation.

About Expedia Group

Expedia Group includes three flagship consumer brands - Expedia, Hotels.com, and Vrbo - along with a leading B2B travel business and travel advertising offerings. Across our brands and business, we help travelers explore the world with confidence and ease.

Important notice

Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never share sensitive personal information unless you are confident of the recipient. Expedia Group does not extend job offers via email or messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official place to find and apply for roles is https://careers.expediagroup.com/jobs/.

Equal Opportunity

Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.