Software Engineer III

Job Summary

As a Software Development Engineer III on the Madrid engineering team, you will be an influential individual contributor – mentoring peers, leading complex technical initiatives, and helping shape the architecture of services used by partners globally.

• Design, develop, and maintain complex backend services and APIs consumed across business units, with a focus on scalability, reliability, and clean‑code principles.
• Lead and clarify code evolution through thorough code reviews, applying knowledge of software design patterns, data structures, and computer science fundamentals.
• Identify and resolve areas of inefficiency in code or system operations, proposing and implementing meaningful improvements.
• Develop and test complex or non‑routine software applications, ensuring they are observable, testable, and meet design and SLA requirements.
• Collaborate proactively with peers across the organisation to build an understanding of cross‑team dependencies and resolve shared challenges.
• Mentor and support the growth of more junior engineers by sharing knowledge, new technical skills, and best practices.
• Contribute to a community of practice, participating in and driving knowledge‑sharing initiatives within the engineering organisation.
• Compile and present technical findings, root cause analyses (RCAs), and operational initiatives to stakeholders through written or verbal communication.
• Partner with cross‑functional stakeholders to develop holistic solutions that align with business needs and improve efficiency across organisational boundaries.

• Bachelor’s degree in Computer Science, Software Engineering, or a related technical field and 5+ years of professional software development experience; or a Master’s degree in a related technical field and 3+ years of experience; or equivalent related professional experience.
• Proficiency in Java or Kotlin, with hands‑on experience across a minimum of three programming languages throughout your career.
• Experience maintaining and operating multiple software products in production environments, including monitoring, troubleshooting, and incident resolution within established SLAs.
• Experience designing distributed systems and building RESTful APIs for consumption across teams or business units.
• Ability to write clean, maintainable, and modular code using software design principles, data structures, and design patterns.
• Experience leading code reviews and upholding technical standards within an engineering team.
• Proficient communication skills, with the ability to convey technical concepts clearly to both technical and non‑technical audiences.
• Preferred:
  Experience with event‑driven architectures and messaging systems (e.g., Apache Kafka) and cloud infrastructure (e.g., AWS).
• Familiarity with containerisation and orchestration technologies (e.g., Docker, Kubernetes) and CI/CD pipelines (e.g., Git Hub Actions, Jenkins).
• Working knowledge of relational and non‑relational databases (e.g., MySQL, DynamoDB, Redis).
• Familiarity with observability and monitoring tooling (e.g., Datadog, Splunk).

The total cash range for this position in Madrid is €55,500.00 to €78,000.00. Employees in this role have the potential to increase their pay up to €89,000.00, 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.

• Medical, dental, and vision coverage.
• Paid time off.
• Employee Assistance Program.
• Wellness and travel reimbursement.
• Travel discounts.
• International Airlines Travel Agent Network (IATAN) membership.

Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.

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