Senior Software Development Engineer in Test (SDET) (Remote)

Hyatt is a hospitality company seeking a Senior Software Development Engineer in Test to join its Digital Marketing Technology and Personalization organization. The role builds and scales automated testing for AWS-based services, APIs, event-driven workflows, data pipelines, personalization logic, and AI-driven decisioning while partnering with platform, data, and product teams to ensure system quality and reliability.

Responsibilities:

• Design, build, and maintain automated test frameworks for cloud native services, APIs, and event driven workflows running in AWS
• Develop integration, contract, and end to end tests validating interactions across customer data platforms, personalization engines, campaign orchestration, and downstream channels
• Embed automated testing and quality gates into CI/CD pipelines to support fast, reliable releases
• Validate personalization, segmentation, and eligibility logic across channels, regions, brands, and guest journeys
• Create reusable libraries and tooling that enable engineering teams to self service testing at scale
• Build automated tests for AI and ML driven systems, including recommendation outputs, decision logic, and optimization flows
• Ensure correctness and stability of guest data pipelines, identity resolution, and activation outputs
• Implement automated checks for schema changes, data anomalies, latency, and failure scenarios
• Partner with engineering teams to improve testability, observability, and resilience of services
• Leverage AWS native tooling and logs to support test diagnostics, debugging, and root cause analysis
• Participate in incident reviews and contribute to prevention through automated quality controls and tooling
• Promote a culture of quality engineering, automation, and shared ownership across the MarTech organization
• Coordinate larger testing efforts and sharing of best practices across teams and organizations

Requirements:

• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience
• 5+ years of experience in software engineering, test automation, or quality engineering
• Strong programming skills in Java, Kotlin, Python, or JavaScript/TypeScript the team uses TypeScript
• Experience designing and implementing service level and API test automation
• Hands on experience testing systems deployed in AWS, including microservices and serverless architectures
• Experience integrating automated testing into CI/CD pipelines
• Strong understanding of test strategy across the testing pyramid and distributed systems
• Experience testing personalization, recommendation, or AI decisioning platforms
• Familiarity with customer data platforms (CDPs), marketing automation, or campaign orchestration tools
• Experience validating or testing machine learning model integrations
• Knowledge of data quality testing, schema validation, and contract testing
• Experience working in large scale digital, ecommerce, or consumer platforms