Principal Software Development Engineer - Cloud Platform

Expedia, Inc.; San Jose, Northern (CA, KY); Hybrid; USD 249,000 - 349,000; Full time

Job summary

Expedia Group is seeking a Principal Software Development Engineer to steer the Cloud Platform architecture in San Jose, CA. You will shape the future of our cloud-native services, drive scalable Kubernetes designs, and improve developer tooling to support rapid, reliable software delivery.

You’ll lead multi-team efforts, define cost-aware infrastructure strategies, and ensure robust observability while embracing AI-driven workflows to optimize performance and reliability.

Qualifications

• Experience designing, building, and operating large-scale, cloud-native distributed systems.
• Proven ownership of multi-service platforms including API design and data modeling.
• Deep knowledge of at least one major public cloud provider and core platform technologies.
• Strong architectural decision making and leadership across teams.
• Familiarity with AI/ML concepts in cloud platforms.

Responsibilities

• Lead architectural evolution toward a cell-based, scalable platform.
• Modernize Kubernetes strategy with multi-cluster management, service mesh, and automated scaling.
• Define observability standards with SRE and OpenTelemetry practices.
• Develop FinOps tooling to tie infrastructure spend to business value.
• Build agent-friendly infrastructure and standardized Dev Containers for fast iteration.

Skills

Kubernetes

Go

Rust

Cloud platforms

Observability

Terraform

Pulumi

CI/CD

AI/ML concepts

Education

Bachelor's degree in Computer Science or equivalent

Tools

OpenTelemetry

Prometheus

Job description

## Principal Software Development Engineer - Cloud PlatformApply: USA - California - San Jose: Full time: Posted Today: End Date: October 19, 2026 (18 days left to apply): R-102791At 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** 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 cloud and data provides secure, differentiated, and personalized experiences that drive loyalty and traveler satisfaction. We are looking for a Principal Engineer to serve as the technical architect for our Cloud Platform organization which sits within our Technology division. As a **Principal Engineer** reporting to the VP of Cloud Platform, you will be the primary architect of our technical future. The Cloud Platform organization provides the secure, scalable cloud infrastructure, runtime platforms, and developer experience tooling that enable teams across Expedia Group to build, deploy, and operate high-quality, resilient software quickly and safely. We are seeing an explosion in code volume and service complexity. The goal for this role is to build a platform that can handle this growth without sacrificing reliability or skyrocketing our cloud bill. You’ll be responsible for making sure our architecture is composable, our developer tools are agentic, our Kubernetes footprint is efficient, and our observability stack provides signals, not just noise. **In this role, you will:*** **Lead Architectural Evolution:** You’ll own the move toward a **Cell-Based Architecture**. We need to move away from fragile, monolithic clusters and toward isolated, predictable failure domains that allow us to scale horizontally with confidence.* **Modernize Kubernetes & Infrastructure:** You’ll define our K8s strategy, focusing on multi-cluster management, service mesh, and automated scaling. You need to ensure our \"Golden Path\" makes it easy for engineers to do the right thing by default.* **Hardened Reliability & Observability:** You will set the standards for SRE across the org. This means moving beyond basic dashboards to causal observability, automated incident response, and rigorous SLO/SLI management. You’ll help us engineer out the root causes of systemic instability.* **Optimize Cloud Economics:** You’ll lead our FinOps technical strategy. You need to build the tooling and visibility that allows us to understand cost-per-service and ensures our infrastructure spend is directly tied to business value.* **Support the Developer Workflow:** While we are embracing AI tools, your job is to build the underlying \"agent-friendly\" infrastructure. This includes standardized **Dev Containers** and ephemeral environments that allow for fast, isolated iteration without clobbering shared state.**Minimum Qualifications:*** Extensive professional software development experience designing, building, and operating large-scale, cloud-native distributed systems and platform services on Kubernetes.* Proven ownership of critical services or multi-service platforms, including responsibility for system design (LLD), API design, data modeling, deployment, and ongoing operational health.* Deep expertise with at least one major public cloud provider and core platform technologies (compute, networking, storage, service discovery, security, observability, and CI/CD).* Demonstrated ability to make high-impact architectural decisions, navigate complex trade-offs, and guide multiple teams toward coherent, long-term technical direction.* Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products within cloud or platform environments.* Deep knowledge of observability patterns (OpenTelemetry, Prometheus, distributed tracing).* Expert-level understanding of Infrastructure as Code (Terraform, Pulumi) and CI/CD at scale.* Proficiency in Go, Rust, or similar languages used in modern platform engineering.**Preferred Qualifications:*** Track record of defining and evolving multi-year technical strategies for cloud and developer platform ecosystems, and successfully driving adoption of shared platforms across many teams.* Experience designing and operating highly available, globally distributed systems at internet scale, including capacity planning, performance optimization, and robust failure handling.* Safely integrates and operates AI/ML‐enabled solutions that improve outcomes, such as intelligent routing, predictive scaling, or automated remediation embedded in platform services, with appropriate safeguards.* Advanced experience applying AI/ML techniques to cloud and platform problems (for example, cost optimization, anomaly detection, or performance tuning) and partnering with data/ML teams to productionize these capabilities.* **A Systems Architect:** You understand the deep plumbing of the cloud (AWS/GCP, K8s, networking). You think in terms of failure domains, latencies, and unit economics.* **Reliability-First:** You’ve carried a pager for global-scale systems. You have a healthy \"paranoia\" about state, consistency, and cascading failures.* **Hands-on:** You still love to build. You can prototype a complex infrastructure change in a weekend to prove it works, but you have the discipline to ensure it's production-grade before it ships.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.