Principal Software Development Engineer — Platform & Infrastructure

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.Principal Software Development Engineer — Platform & InfrastructureIntroduction to Team:  Expedia Technology teams partner with our Product teams 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 hiring a hands-on Principal Software Development Engineer to lead the design, implementation and operational excellence of our cloud infrastructure and platform capabilities. This role emphasizes platform engineering: designing and delivering a scalable, reliable, secure, observable, and cost-efficient runtime platform (Kubernetes, containers, CI/CD, IaC, cloud services) used by multiple product teams. You will both set strategy and be embedded in the code and infrastructure to execute the roadmap end-to-end.You will shape the foundational platform that powers customer-facing services across brands, increasing developer velocity, reducing operational risk, and optimizing cloud spend. This role is ideal for a leader who can design complex systems, implement solutions in production, and lead broad cross-team adoption.What you will do:Define the technical strategy, roadmap and standards for cloud infrastructure and platform capabilities (container runtime, orchestration, networking, CI/CD, observability, security, IaC)Lead migration and platform adoption efforts (containerization, Kubernetes/EKS, runtime platform) and drive roadmap execution end-to-endBe an active code and IaC contributor (Terraform/CloudFormation/Helm, platform services, automation) and perform design/code reviewsDesign scalable, resilient, and secure infrastructure patterns for microservices, data stores, caching, and messagingBuild and improve CI/CD pipelines, release automation, testing strategies, and safe deployment practicesDrive SRE and observability practices: define SLIs/SLOs, monitoring, tracing, alerting, runbooks, incident response, and post-mortemsLead capacity planning, performance tuning, and traffic engineering for high-scale workloadsOwn and evangelize AWS cost optimization practices (rightsizing, reserved/spot strategies, architecture changes, cost monitoring and show back)Define and enforce platform standards, security controls, environment tagging, and operational excellence practices across teamsMentor and grow senior and mid-level engineers; identify high-potential talent and raise engineering standardsCollaborate closely with product, security, platform, and operations stakeholders to align technical solutions with business goals and compliance requirementsMinimum qualifications:10+ years professional software engineering experience with significant hands-on experience building and operating distributed cloud servicesStrong, demonstrable experience building and running platforms on AWS (EKS, ECS, EC2, VPC, IAM, S3, RDS, ELB/ALB, Auto Scaling)Deep hands-on experience with containerization and Kubernetes at scale (EKS or comparable)Practical experience with infrastructure as code (Terraform, CloudFormation) and Helm chartsProven record of contributing production code and platform automation (languages such as Go, Python, Java, or similar)Experience designing for resilience, observability, security and operational automationFamiliarity with CI/CD tooling and developer workflows (Spinnaker, Jenkins, GitHub Actions, GitLab CI, or similar)Demonstrated ability to lead cross-team technical initiatives and influence architectural decisionsStrong communication skills and experience mentoring engineersPreferred qualifications:Prior platform engineering, SRE, or infrastructure leadership at scaleExperience with monitoring/observability stacks (Prometheus, Grafana, Datadog, OpenTelemetry, Jaeger)Proven experience with AWS cost optimization strategies and tooling (Cost Explorer, Trusted Advisor, billing APIs)Knowledge of service meshes (Istio, Linkerd, VPC Lattice), API gateways, and advanced networking patternsExperience with security/compliance for cloud environments, secrets management, and policy-as-codeExperience migrating monoliths to cloud-native architecturesThe total cash range for this position in Seattle is $231,000.00 to $323,500.00. Employees in this role have the potential to increase their pay up to $369,500.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role. The total cash range for this position in San Jose is $249,000.00 to $348,500.00. Employees in this role have the potential to increase their pay up to $398,500.00, 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 perksExpedia 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 .Accommodation requestsExpedia 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 .About Expedia GroupExpedia 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 noticeEmployment 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 .Equal OpportunityExpedia 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, veteran status, or any other characteristic protected by law. 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.SummaryLocation: Washington - Seattle Campus; USA - California - San JoseType: Full time