Tuan U.
Software Test Engineer with experience leading quality engineering initiatives across cloud, eCommerce, and distributed systems across platforms from desktops to apps
- Role
- Principal Software Engineer in Test at Walmart Global Tech
- Location
- San Jose, CA, US
- LinkedIn followers
- 500 followers
About Tuan U.
Strong skills in programing languages like Java, C, C++ with object oriented design concepts and strong mathematics background. Main strengths are strong trouble shooting, analytical skills, and good team player- Experience in software functional, performance, manual, automation testing- Solid understanding in software testing methodologies - Experience in Agile software development process, and software development life cycle, IBM design thinking- Experience in working in multi-cultural worldwide environment
Experience
Principal Software Engineer in Test
Nov 2025 — Present
Led end-to-end API and backend validation for Sam’s Club omni-catalog ecosystem, enabling migration of 350K+ catalog items and validation of ~600M availability records across 600+ stores and 125+ distribution centers• Designed and implemented backend automation frameworks to validate complex microservices, data pipelines, and system integrations across a multi-tenant eCommerce platform• Successfully validated migration project which maps over 200+ complex catalogattributes from legacy systems to Walmart’s multi-tenant ecommerce platform.• Defined E2E backend automation strategies and develop 100% automation regression suites that resulted in zero P0/P1/P2 defects for critical omni catalog ecosystem backend services• Built a Node.js–based production data validation framework capable of validating 600M+ records in under 15 minutes, ensuring data accuracy and consistency at scale• Led cross-team E2E triage cand root cause analysis call to debug, analyze, mitigation problem suggestion with 100+ engineers, product managers, and platform teams to prevent any GMV or member shopping experience impact• Ensured 100% automated test coverage (no manual testing) for omni-catalog backend services, enabling safe and rapid releases• Provided quality leadership during design, development, integration, and E2E testing, preventing any issues across web, mobile, and in-club systems• Led backend validation for Tender Prioritization project, reprocessing ~6M Sam’s Club credit cards to support default payment prioritization• Drove quality validation for Add-On Member Enhancement, unblocking ~200 members/day and contributing to $15M–$18M incremental GMV• Developed and maintained internal automation tools to improve productivity for100+ engineers• Established testing best practices, API validation standards, and automation guidelines across the Sam’s Club omni-catalog organization
Education
San José State University
Master’s Degree, Computer Software Engineering
2016
San José State University
Bachelor's degree, Mathematics and Computer Science
2011 — 2014
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