Software Development Engineer II - Backend-Focused Full-Stack

As a Full Stack Software Development Engineer II on EG Advertising, you will help build the platform at the center of Expedia Group's advertising growth strategy. You will contribute to scalable, low-latency systems and intelligent ad experiences that expand inventory, improve relevance, and help EG Advertising achieve ambitious revenue goals across onsite, partner, and off-platform channels. You will work on systems that support the advertising lifecycle, including partner-facing tools, campaign management, ad retrieval, bidding, ranking, delivery, reporting, and measurement.

In this role, you will:

• Design, implement, test, and maintain secure, scalable services

and applications, contributing to low-level design, API design, and data modeling for business-critical capabilities.

• Write clean, reliable, and well-tested code, applying sound

engineering principles, design patterns, and code review practices to improve quality, performance, and maintainability.

• Own well-defined features through technical design,

implementation, deployment, monitoring, and iteration, with support from senior engineers on broader architectural decisions.

• Diagnose and resolve production issues, participate in root

cause analysis, and contribute to improvements in reliability, observability, and resilience.

• Collaborate with product, data science, and engineering

partners to refine requirements, make data-informed technical decisions, and deliver reusable solutions.

• Contribute to the safe integration and operation of AI/ML-

• Bachelor's degree in Computer Science or a related technical field; or equivalent related professional experience.
• 2+ years of professional software development experience building and maintaining services or applications in production environments.
• Proficiency with Kotlin or Java, with experience building backend systems using microservices and event-driven architectures.
• Experience with the software development lifecycle for services or applications, including design, implementation, code reviews, testing, deployment, and monitoring.

Preferred Qualifications:

• Experience building full-stack applications, including modern frontend development, backend services, APIs, and data flows.
• Experience with ad servers, ad bidders, ad selection or ranking systems, campaign delivery systems, programmatic advertising platforms, or similarly complex recommendation or ML-driven decisioning systems.
• Experience designing, operating, or supporting distributed services in production, with attention to observability, reliability, and performance optimization.
• Experience with AWS, serverless patterns, or infrastructure-as-code tools such as CloudFormation.
• Experience with containerized deployments (for example, Docker and Kubernetes), CI/CD pipelines, and test automation.
• Experience collaborating with Data Scientists or integrating data-driven features into production services to improve relevance, personalization, or operational outcomes.
• Strong communication and collaboration skills, including experience leading small technical projects and contributing to engineering best practices within a team.

Pulled from the full job description Health insurance Paid time off Employee discount Vision insurance Dental insurance Employee assistance program, 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.

Benefits and perks

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.expediggroup.com/life .

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.