Software Development Engineer III

11310 Expedia.com Ltd.; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Expedia Group is seeking an experienced backend engineer to design and implement scalable, robust systems and services across domains. You will develop APIs, data models, and reliable architectures aligned to business goals in a cloud environment.

You will collaborate with cross-functional teams to deliver full-stack solutions and lead architecture discussions, code reviews, and engineering standards. On-call rotations and incident response are part of the role.

Qualifications

• Bachelor’s degree in Computer Science or a related technical field or equivalent experience.
• 5+ years of relevant professional experience.
• Strong fundamentals in data structures and algorithms, Java or Kotlin, and familiarity with the JVM stack and distributed systems.
• Experience building high-performance backend services in cloud environments (AWS preferred).
• Experience leading engineering efforts for services at scale and familiarity with platform tooling or IaC.
• Hands-on experience designing, building, and operating large-scale distributed systems.

Responsibilities

• Design and implement scalable, robust backend systems and services across domains with focus on reliability and performance.
• Develop APIs and data models aligned to business goals and engineering best practices.
• Collaborate with cross-functional teams to deliver full-stack solutions across platforms.
• Lead technical efforts in system architecture, code reviews, and engineering standards.
• Safely integrate and operate AI/ML-enabled solutions and ensure responsible use.
• Identify and resolve production issues and continuously improve system health and operational excellence.

Skills

Java/Kotlin

JVM stack

System design

Distributed systems

Data structures

Algorithms

AI/ML tools

Education

Bachelor’s degree in Computer Science or related field

Tools

Kubernetes

CI/CD

AWS

IaC

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. Our Technology Team partners with teams across Expedia Group to create innovative products, services, and tools to deliver high-quality experiences for travellers, partners, and our employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalised experiences that drive loyalty and traveller satisfaction. Price is a key factor influencing travellers’ path to driving a choice leading to a purchase. In a world of infinite paths to purchase, travellers make multiple searches and find the ‘best trip’ and ‘best deal’. The Offers Domain team is tasked with providing the customer with simple, clear, accurate, and transparent pricing throughout their shopping and booking journeys. We do this by putting the customer first, creating capabilities that can be shared with and presented to the customer, meeting travellers’ expectations in locally relevant ways and adhering to regulatory norms. This is a great opportunity for you to play a pivotal role in shaping our technical domain to power all Expedia Group’s brands and product lines.

In this role, you will:

• Design and implement scalable, robust, and maintainable systems and services across multiple domains, with a focus on reliability and performance.
• Develop complex application logic, APIs, and data models aligned to business goals and best engineering practices.
• Collaborate with cross-functional teams to deliver high-quality, full-stack solutions that integrate seamlessly across platforms.
• Lead technical efforts in system architecture, code reviews, and establishing engineering standards.
• Safely integrate and operate AI/ML-enabled solutions that improve outcomes, ensuring responsible use of advanced technologies.
• Proactively identify, diagnose, and resolve production issues, continuously improving system health and operational excellence.

Minimum Qualifications:

• Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.
• 5+ years of relevant professional experience.
• Strong software engineering fundamentals—data structures, and algorithms in Java or Kotlin, with familiarity across the JVM stack, system design, and distributed systems, and can understand highly complex systems, design moderately complex services, and guide integrations across teams within the business unit.
• Building and operating high‑performance, highly available backend services in public/hybrid cloud environments (Kotlin strongly preferred).
• Demonstrated experience leading engineering efforts for services operating at scale in a cloud environment (preferably AWS), including deploying and operating services using platform tooling and/or infrastructure as code.
• Hands‑on experience designing, building, and operating large‑scale, distributed systems and services.
• Strong proficiency in system design, API design, and data modelling.
• Experience using modern AI‑assisted development tools (for example, IDE assistants, chat‑based coding agents, or AI‑augmented code review/testing tools) as part of your daily workflow, beyond simple code autocompletion, and are comfortable working in an AI‑integrated environment.

Preferred Qualifications:

• Experience with container technologies (such as Kubernetes) and CI/CD tools or processes.
• Expertise in architecting end-to-end solutions integrating multiple systems or domains.
• Strong focus on operational excellence, including monitoring, automation, and incident response.
• Data‑driven approach to problem solving and technical decision making, including leveraging AI/ML insights where appropriate.
• Deep knowledge of safely integrating AI/ML features into production systems and optimising their impact at scale.

On-Call Requirement:

This position requires the employee to be on-call outside of regular working hours.

• Responding to emergencies or incidents as they arise
• Providing prompt support and solutions
• Participating in on-call rotations, including nights, weekends, and bank holidays
• Remaining reachable by phone or other communication methods at all times during on-call periods

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.

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.