Yan Hai
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Yan Hai
Adyen

Engineering Leader | Payments Platforms | AI-Enabled Engineering

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Engineering leader with 10+ years of experience building global payment platforms and leading high-performing distributed engineering teams across APAC. I have a proven track record of developing engineers, establishing clear ownership, and aligning teams across regions and time zones so they deliver as one. I apply AI-enabled engineering practices to improve productivity without compromising reliability, quality, or operational rigor.

One team, no borders

Treat all regions as one team; grow people who multiply the team’s impact.

Ownership mindset

Own the full outcome: the team, the platform, and what runs in production.

Open communication

Timely feedback builds trust and keeps teams effective under pressure.

Iterative improvement

Great systems and teams are never “done”; they improve through continuous learning.

Experience

  1. work

    Team Lead, Alternative Payments (APAC)

    Adyen β€’ Singapore
    • Own APAC delivery for 20+ payment methods across 10+ countries, enabling global merchants to access local payment methods while aligning regional execution with global platform standards
    • Lead a Singapore team of 7 engineers, owning hiring, onboarding, performance management, and career development while mentoring engineers in Sydney
    • Define and evolve APAC local payment architecture to standardize payment flows, reduce fragmentation, and balance regional requirements with global platform consistency
    • Partner with Product, Commercial, and regional stakeholders to define payment method strategy and shape the APAC platform roadmap
    • Lead technical due diligence for payment partners, enabling faster integration decisions by balancing API capabilities, settlement models, reporting, latency, and operational complexity
    • Introduce AI-assisted engineering workflows using internal MCP servers and reusable engineering playbooks to reduce repetitive work and accelerate delivery
  2. work

    Software Engineer, Payments

    Adyen β€’ Singapore
    • Spearheaded a unified partner webhook receiver covering 50+ methods across APAC, EMEA, LATAM, and the US
    • Decomposed the payment acceptance gateway into card, tokenization, IPP, and LPM services, and rolled it out without business interruption
    • Delivered two strategic payment partner integrations supporting alternative payments, bank transfers, and cards for the Indian market
    • Led token localization and data purging; migrated ~10M tokens to India-based infrastructure
  3. work

    Engineering Manager

    • Led cross-functional engineering, QA, and DevOps teams across Singapore and India; coached engineers into senior and lead roles
    • Drove local payroll from a monolith to microservices, enabling independent deployments, increasing release cadence from monthly to daily, and containing failures to individual services
    • Built a jurisdiction-aware master data framework for legal properties and government submission portals (Singapore, Thailand, Vietnam)
  4. work

    Software Engineer

    • Designed domain-driven service boundaries and inter-service APIs to cut duplicated data maintenance across subsystems
    • Delivered local payroll for Thailand end-to-end; extended legacy payroll architecture and an internal DSL for overseas markets
Focus
Platforms Platforms
Product Product
People People
Craft
Back-end Back-end
Front-end Front-end
Never-end Never-end
Hobbies
Coding Coding
Gym Gym
Sleep Sleep
Languages
English English
Mandarin Mandarin
Listen Listen