Senior Software Development Engineer, 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 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.

Our Technology Team partners with teams across Expedia Group to create 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 that drive loyalty and traveler satisfaction. We are the Expedia Group Advertising team – as a global leader in travel industry advertising, we connect advertisers with millions of travelers.

We are seeking a talented and results‑driven Software Development Engineer III, Advertising Technology. In this role, you will work with a team of dedicated engineers to develop and enhance our next‑generation advertising suite of products. Your technical expertise and collaborative approach will help deliver impactful solutions for advertisers and travelers worldwide. As a Software Development Engineer III, you will play a critical role in building and scaling high‑performance systems that support Expedia Group’s expanding advertising network.

Your focus will be on designing innovative solutions, driving operational excellence, and contributing to the success of a collaborative engineering team.

• Design and Develop:
  Create architecture designs and implement scalable, reliable, high‑performance systems that power advertisers’ campaigns across platforms
• Enhance Advertiser
  
  Experience:
  
  Measure and optimize performance to increase efficiency and improve advertiser’s experience with our services
• Champion developer experience:
  Influence the architecture and evolution of our B2B platforms by evaluating and improving internal frameworks and development patterns that enable higher efficiency across the organization
• Innovate Continuously:
  Stay informed on industry trends and emerging technologies in advertising technology, identifying opportunities to integrate new approaches and improve our platform. Integrate and operate AI/ML‑enabled solutions to enhance product capabilities and improve operational outcomes
• Collaborate Cross‑Functionally:
  Work closely across organizations including product, operations, and other engineer teams to deliver value to advertisers
• Team Excellence:
  Contribute to a culture of technical excellence, collaboration, and continuous improvement within the engineering team. Mentor and provide guidance to junior engineers, helping them grow their technical skills and advance their careers

• Bachelor’s degree in Computer Science, Engineering, or related field and 5+ years of professional software development experience, or Master’s degree and 3+ years of experience.
• Proven ownership of full‑stack services or products, with demonstrated impact at the service or multi‑service level.
• Strong technical expertise in system design (including low‑level design), API development, and data modeling for web applications.
• Proficient in multiple programming languages and frameworks relevant to both frontend and backend development.

• Experience architecting, deploying, and optimizing full‑stack solutions that operate reliably at scale.
• Demonstrated leadership in system architecture, technical decision‑making, and driving best practices within a service or domain.
• Track…