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 & Infrastructure   Introduction 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.

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-end Be an active code and IaC contributor (Terraform/CloudFormation/Helm, platform services, automation) and perform design/code reviews Design scalable, resilient, and secure infrastructure patterns for microservices, data stores, caching, and messaging Build and improve CI/CD pipelines, release automation, testing strategies, and safe deployment practices Drive SRE and observability practices: define SLIs/SLOs, monitoring, tracing, alerting, runbooks, incident response, and post-mortems Lead capacity planning, performance tuning, and traffic engineering for high-scale workloads Own 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 teams Mentor and grow senior and mid-level engineers; identify high-potential talent and raise engineering standards Collaborate closely with product, security, platform, and operations stakeholders to align technical solutions with business goals and compliance requirements Minimum qualifications: 10+ years professional software engineering experience with significant hands-on experience building and operating distributed cloud services Strong, 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