Software Development Engineer III, Advertising Technology

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.

Introduction to the team

Expedia Group Advertising builds the platforms and experiences that connect advertisers with millions of travelers across the globe.

Our mission is to help partners reach the right traveler with the right message at the right time through intuitive advertiser experiences, high-performance ad delivery systems, and intelligent, AI-powered optimization.

We are growing our Advertiser Experience engineering team and are looking for a talented, product-minded Software Development Engineer III who is excited to build thoughtful advertiser-facing experiences and the backend services that power them.

You will help shape the next generation of our advertising marketplace, working at the intersection of user experience, scalable distributed systems, and generative AI.

In this role, you will:

Implement backend APIs and services that power high-quality UI experiences and deliver trust, transparency, and performance to our partners

Build and optimize services that support campaign management and optimization across Expedia Group’s advertising network

Improve reliability, scalability, and latency of mission-critical systems

Use LLMs and generative AI to simplify advertiser workflows, improve campaign setup, and automate repetitive tasks

Work with data scientists and ML engineers to integrate personalized recommendations, smart defaults, and AI-assisted decision support

Partner with product managers, UX designers, data scientists, and other engineering teams to deliver measurable advertiser value

Leverage AI-enabled solutions and AI-assisted development tools to improve developer productivity and product outcomes

Advocate for high-quality code, automated testing, and strong observability practices

Participate in operational reviews and drive continuous improvement

Mentor junior engineers and help elevate the technical bar of the team

Minimum qualifications:

5+ years for Bachelor's degree or 3+ years for Master's in a related technical field; or equivalent related professional experience

5+ years of experience in backend software development, working with cloud-based and distributed systems at scale

Proficiency in Java/J2EE, C#, or similar object-oriented languages, with hands-on experience integrating services with relational and NoSQL databases

Experience with CI/CD pipelines, infrastructure/test automation, and delivering features in Agile development environments

Demonstrated experience designing and deploying scalable services in a cloud environment (e.g., AWS, Azure, GCP)

Exposure to advertising technologies (ad serving, campaign management, RTB, auctions)

with event streaming or messaging systems (e.g., Flink, Kafka, or similar real-time data processing technologies)

working with data-driven systems, ML-powered features, or experimentation platforms

Experience contributing to architecture and design discussions for services, APIs, and data models

Demonstrated ability to improve service quality through performance tuning, observability, and automation

Experience using metrics and data to inform engineering decisions and measure impact

Experience applying generative AI to product experiences and internal tools

Experience contributing to multiple multi-quarter, cross-team projects

A Master's degree in a related technical field

Please note that this role is only available in Chicago, IL or Seattle, WA, in alignment with our flexible work model, which requires employees to be in the office at least three days a week.

We are unable to offer relocation assistance for this role.

Starting pay for this role will vary based on multiple factors, including location, available budget, and an individual’s knowledge, skills, and experience.

Pay ranges may be modified in the future.

Expedia Group offers benefits and perks designed to support employees and their families, including medical, dental, and vision coverage, paid time off, an Employee Assistance Program, wellness and travel reimbursement, travel discounts, and International Airlines Travel Agent Network (IATAN) membership.

Learn more about life at Expedia Group at https://careers.expediagroup.com/life.

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.

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/.