Kris Wen

About

Software engineer at American Express who built a zero-to-one first-party cookie tracking architecture as the industry moved away from third-party cookies, combining frontend, backend, CI/CD, and AI-assisted QA automation. Particularly strong in developer tooling and workflow automation, with measurable impact including 70% less manual QA, 8+ critical errors caught pre-production, and PR cycles reduced from 48 hours to under 8.

Key Strengths

• Owned and shipped a zero-to-one first-party cookie tracking architecture in production
• Full-stack implementation across frontend JavaScript and backend Node.js
• Built AI-assisted developer workflow tooling integrated into CI/CD
• Automated JSON tag validation with repository-specific agent rules
• Reduced manual QA time by 70% per release
• Cut PR review cycles from 48 hours to under 8 hours
• Caught 8+ critical JSON schema errors before production in the first month
• Created a custom CLI to validate URLs and script enablement at scale
• Strong stakeholder alignment across product, marketing, and engineering
• Used parallel staging validation to build trust in a new tracking system
• Turned complex data pipelines into self-service Tableau dashboards for non-technical users
• Improved business operations workflow efficiency by 30%

Reference Highlights

• vital to the application
• standardized incomplete vendor requirements
• created templates to automate data input
• ensured 100% unit test coverage
• proactively created new application checks
• modernized and standardized marketing technology
• built foundation for new systems and technology
• automated code checks with Copilot
• reduced build failures
• helped team self-evaluate their work
• handled ambiguous projects effectively
• worked effectively with product and technical owners
• created new documentation for cookies and page behavior
• successfully shipped ambiguous project to production
• work remains in use today
• managed deadlines well
• documented requirements and changes thoroughly
• confirmed project needs early
• set expectations early
• broad full-stack engineering experience
• strong Azure application development experience
• production experience across multiple business systems
• automation capability
• API integration expertise
• adaptable to changing situations
• able to prioritize tasks effectively
• handles multiple priorities simultaneously
• delivers work on time
• contributed to core warehouse management functionality

Experience

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