# Software Development Engineer III - Backend - Payments

Hiring organization: [Expedia Group](https://career.thegoodapps.co/organizations/expedia-group)

Canonical page: https://career.thegoodapps.co/jobs/a23a624c-a5ef-4ce9-8617-97211b299f56

Listed on Expedia Group's own careers site. Applications go to them directly.

- Employment type: full time
- Seniority: Senior
- Location: Austin, TX
- Salary: 146000 – 204500 USD per year

## Summary

Expedia's payments team needs a senior backend engineer to design fraud-defense systems using AI agents and LLMs, operating cloud-native services that process over $100 billion annually across 155 countries. This role suits experienced systems builders who can architect agentic workflows, mentor others, and bridge AI-accelerated development with production reliability at scale.

_Our summary, not Expedia Group's wording._

## Skills named

Amazon Web Services (AWS), Apache Flink, Apache Kafka, Cursor AI, Gemini, GitHub Copilot, Go, Java, Kubernetes, LangChain, LangGraph, LlamaIndex, Microservices, Microsoft Azure, Multi-Agent Systems, NoSQL, OpenAI, Pinecone, Python, Retrieval-Augmented Generation (RAG), SPARK, SQL

## Required

- 5+ years backend software engineering with high-scale production services
- Shipped Gen AI and agentic systems to production
- Proficiency in at least one modern programming language
- System design, API design, and data modeling for AI-enabled services
- Distributed cloud-native engineering (AWS, GCP, or Azure)
- Microservices and API-driven architecture
- SQL/NoSQL databases
- Data streaming/processing (Kafka, Flink, Spark)
- Hands-on use of AI coding assistants (Claude Code, Cursor, GitHub Copilot, or equivalent)
- Built, monitored, and debugged LLM and multi-agent applications
- Experience with LangChain, LangGraph, Langfuse, or equivalent
- RAG architecture experience with data orchestration and vector databases
- Exposure to LLM providers (OpenAI, Gemini, Anthropic)
- Bachelor's degree in Computer Science or equivalent professional experience

## Nice to have

- Automated manual operational processes with agentic systems
- Built and integrated AI/ML solutions or LLM models
- Graph/sequence modeling or entity resolution at scale
- Device and behavioral signals
- Cloud cost/performance tuning and capacity planning
- Marketplace, travel, or e-commerce experience

Apply on Expedia Group's site: https://expedia.wd108.myworkdayjobs.com/en-US/search/job/Austin-Domain-11---HomeAway/Software-Development-Engineer-III---AI-Engineer_R-102785-1