Terrence Tun

About Terrence Tun

Engineering leader who scales organizations and delivers outcomes across ambiguity.I\'ve spent the last 15+ years building and leading teams across commerce platforms, payments systems, and distributed infrastructure. At LegalZoom, I own a $756M revenue commerce platform spanning billing, payments, subscriptions, and checkout. I grew the department from 2 teams to 4, built the leadership bench, and drove $12M+ in annual revenue impact through payment optimization strategy.The work I\'m most proud of isn\'t any single system. It\'s shaping a business area: partnering with Product on revenue strategy, coordinating with Finance and Compliance on a SOX-compliant subscription migration, influencing payment processor selection alongside the CFO, and restructuring an org to deliver against all of it simultaneously.More recently, I\'ve been applying AI-augmented development practices to scale engineering velocity across the department, driving a 3x increase in PR throughput and shifting senior engineers from implementation to high-leverage review and architecture work.Before LegalZoom: Software Architect at Fandango (CCPA compliance, partner integrations with Google/Facebook/Amazon), Engineering Manager at Entertainment Partners, and early career at Symantec and MySpace.I\'m always interested in conversations about:• Scaling engineering organizations through ambiguity• Commerce platform modernization and payments optimization• Cross-functional leadership across Product, Finance, and Engineering• AI-augmented development as an org design leverBased in Los Angeles. UCSD alum.

Experience

1. Head of E-commerce Engineering (Group Manager)

   LegalZoom

   May 2022 — Present

   AI Infrastructure & Agentic Systems: • Engineered fully autonomous incident response pipeline from detection to deployed fix, orchestrating Datadog, Jira, and GitHub with production-grade circuit breakers and AI-driven quality gates • Designed multi-agent orchestration workflows for full SDLC automation: planning, implementation, code review, and adversarial debate patterns • Built custom MCP servers including AI-powered email triage and GraphQL access layers • Drove 100% Claude Code adoption with 5x increase in PR volume Platform & Business Impact: • Leading $756M revenue platform migration to modern commerce infrastructure • $12M+ annual revenue impact through payment optimizations (network tokens, dunning automation, multi-processor gateway routing) • Executed SOX-compliant migration of subscriptions with 0.4% error rate and zero incidents • Enabled 20% Q4 subscription revenue increase ($131M) through Formation upsell enablement Engineering Leadership: • Scaled 25-engineer department across billing, payments, subscriptions, and checkout • Designed GraphQL-powered checkout system, reducing purchase times from 30s to <5s • Led OpenID/OAuth2 adoption across 15+ systems

Skills

• Asp.net Mvc
• Agile Methodologies
• Javascript
• Dhtml
• Front-End
• Asp.net
• C#
• .net
• Asp
• Ajax
• Html
• Json
• Css
• Cascading Style Sheets (Css)