Expedia
Senior Software Development Engineer - GenAI
$172K–$274K
USA - Illinois - Chicago · Senior · Full-time · Posted Oct 12, 2026
- Experience
- 8+ years of relevant professional experience.
- Education
- Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.
About the job
Leads the design, delivery, and operation of Expedia’s shared GenAI platform, including scalable services and multi-agent infrastructure used by product and ML teams.
What you'll do
- Design and deliver platform services, APIs, and data models; own implementation, release, and production operations.
- Develop platform capabilities and AI asset grading standards with partner teams, including safety, quality, reliability, and readiness guardrails.
- Work with LLM Inference and use-case teams on intelligent routing, model deployments, fine-tuning, and adoption of platform capabilities.
What they ask for
- Bachelor’s degree in Computer Science or a related technical field, or equivalent related professional experience.
- 8+ years of relevant professional experience, including building and operating backend services and APIs with end-to-end ownership.
- Proficiency in Python and experience building production-grade web services with FastAPI or similar frameworks.
- Experience running backend APIs in public or hybrid cloud environments, with hands-on exposure to cloud services and at least one data store technology.
Nice to have
- Deep experience operating Python backend APIs at scale on AWS or similar cloud providers.
- Hands-on RAG, vector store, evaluation/observability, or multi-agent orchestration experience.
Pay
$171,500.00 to $240,000.00 USD total cash; up to $274,500.00 USD total cash (top of range)
Tools
Python, FastAPI, Flask, Django, AWS, Aurora PostgreSQL, Elasticsearch, LangChain
AI focus
Builds and operates shared GenAI platform services and multi-agent infrastructure; supports AI asset grading, LLM routing and deployments, fine-tuning, and safe AI-enabled products.
Model-written summary · the original posting is authoritative