Software Development Engineer III, Advertising Technology

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.

To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated, and we know that when one of us wins, we all win.

We provide a full benefits package, including exciting travel perks, generous time‑off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We’re building a more open world. Join us.

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 II 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.

• 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
• 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

• 5+ years of experience for a Bachelor’s degree or 3+ years for a 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 No
  
  SQL 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)
• Experience working with data‑driven systems, ML‑powered features, or experimentation platforms
• 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 and requires employees to be in‑office at least three days a week. We are unable to offer relocation assistance for this role.

The total cash range for this position in Chicago is $ to $. Employees may increase their pay up to $, the top of the range, based on sustained performance.

Starting pay will vary based on location, budget, and an individual’s knowledge, skills, and experience. Pay ranges may be modified in…