Software Development Engineer II, 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.

Why Join Us?

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 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.

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 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.

In this role, you will:

• Optimize auction and ad retrieval to surface more relevant ads and grow advertisers reach to our travelers.

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

• Build and scale services that support ad serving, ad selection, and campaign management across Expedia Group’s advertising network

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

• Work closely with ML and data teams on features such as relevance optimization, targeting, and performance modeling

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

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

• Partner with product managers, 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

Minimum Qualifications:

• 2+ years of professional software engineering experience

• Strong proficiency in at least one modern programming language (e.g., Java, Kotlin)

• Experience building and maintaining backend services, APIs(gRPC/Protobuf), or microservices in cloud environments

• Solid understanding of distributed systems, data flows, and operational best practices

Preferred Qualifications:

• Experience with tools and frameworks like gRPC, Apache Flink, Spark.

• Experience with advertising technologies (ad serving, campaign management, RTB, auctions)

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

• Experience working with applying generative AI to product experiences and internal tools

• Strong problem-solving skills and the ability to reason through ambiguous requirements

• A product-minded approach — you care about the “why” behind the code

• Excellent communication and collaboration skills

• A growth mindset and desire to continuously improve

No relocation assistance offered
Please note that this role is only available in the following location: Seattle in alignment with our flexible work model which 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 Seattle is $119,000.00 to $166,500.00. Employees in this role have the potential to increase their pay up to $190,500.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the 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 is proud to offer a wide range of benefits to support employees and their families, including medical/dental/vision, paid time off, and an Employee Assistance Program. To fuel each employee’s passion for travel, we offer a wellness & travel reimbursement, travel discounts, and an International Airlines Travel Agent (IATAN) membership. View our full list of benefits.

Accommodation requests

If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request.

We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others.

Expedia Group's family of brands includes: Brand Expedia®, Hotels.com®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. © 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50

Employment opportunities and job offers at Expedia Group will always come from Expedia Group’s Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you’re confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com/jobs.

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, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. This employer participates in E-Verify. The employer will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.