Software Development Engineer III - Backend - Payments

Expedia Group, Inc.

• $146K — $204K *
Consumer Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science or related technical field or equivalent experience.
  • 5+ years of software engineering experience, particularly with ML/AI solutions in production.
  • Experience with LLM and multi-agent applications using frameworks like LangChain or Langfuse.
  • Familiarity with RAG-based architecture and data orchestration frameworks such as LlamaIndex.
  • Exposure to LLM providers like OpenAI or Gemini.
  • Practical experience with production ML (anomaly detection, online inference).
  • Proficiency in modern programming languages and core software engineering practices.

Responsibilities

  • Design and implement low-latency risk decisioning systems.
  • Develop and operate ML-powered capabilities in production environments.
  • Integrate AI technologies into fraud detection workflows.
  • Modernize the payment platform for increased efficiency.
  • Evaluate vendors and internal solutions for performance and risk management.
  • Establish observability and compliance measures in services.
  • Collaborate with cross-functional teams to achieve objectives and mentor fellow engineers.

Benefits

  • Full benefits package including medical, dental, and vision.
  • Paid time off and parental leave.
  • Flexible work model with in-office requirements.
  • Wellness and travel reimbursement perks.
  • Travel discounts and IATAN membership for employees.
Full Job Description
Introduction to the Team

Expedia Technology teams partner with our Product teams to create innovative products, services, and tools that deliver high-quality experiences for travelers, partners, and employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalized experiences that drive loyalty and traveler satisfaction.

The Software Development Engineer III position is part of the Consumer Payments team within Expedia Global Payments, under the Travel foundations org. This team builds and maintains critical systems that power backend APIs for consumer and B2B payment processing, administrative tools for payment configuration, and support for a variety of payment methods across the platform.

Our services are designed with security, scalability, and availability in mind, supporting credit card processing and payment routing at global scale. As an engineer on this team, you'll apply your passion for backend development, cloud computing, and modern engineering practices to solve real-world challenges that impact millions of travelers and partners worldwide. We are looking for an engineer who demonstrates strong ownership, follows through on commitments, and takes pride in building reliable systems that perform well in production.

In this role, you will:

  • Design, build, and maintain scalable backend payment services that support Expedia's global travel platform


  • Apply software design principles, data structures and/or design patterns and computer science fundamentals to write code that is clean, maintainable, optimized, modular with good naming conventions


  • Implement secure data handling practices to protect payment information and meet compliance standards


  • Recommend and apply architectural patterns or GenAI capabilities to improve system design and innovation


  • Enhance service reliability through observability, automation, and continuous operational improvements


  • Collaborate with cross-functional teams to deliver high-impact features aligned with Expedia's strategic goals


Minimum Qualifications:

  • Bachelor's degree or Master's in a related technical field, or equivalent related professional experience


  • 5+ years of experience in backend software development, working with cloud-based and distributed systems at scale


  • Proficiency in Java or Kotlin, with hands-on experience integrating services with relational and NoSQL databases


  • Experience with CI/CD pipelines, infrastructure/test automation, and delivering features in Agile development environments


Preferred Qualifications:

  • Experience working on payment platforms or implementing backend services leveraging GenAI technologies


  • Experience contributing to multiple multi-quarter, cross-team projects


  • Experience supporting complex distributed systems in production through monitoring, debugging, incident resolution, and root-cause analysis


  • Demonstrated experience designing and deploying scalable services on AWS


  • A Master's degree in a related technical field


Please note that this role is only available in Austin, TX, in alignment with our flexible work model, which requires employees to be in the office at least three days a week. We are unable to offer relocation assistance for this role.

The total cash range for this position in Austin is $146,000.00 to $204,500.00. Employees in this role have the potential to increase their pay up to $233,500.00, 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 perks

Expedia 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 https://careers.expediagroup.com/life.

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