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Ayaka Shimizu

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Group Product Manager at Westpac | ex-Mastercard

Works at
Westpac
Location
Tokyo, Japan · JST (UTC+9)
Experience
9+ years experience
Education
University of Indonesia
Languages
English, Japanese

Overview

9 years in product management, the last 4 at Westpac, where I lead the marketplace team. Cut time-to-first-value for new marketplace customers from 14 days to 4. Before that: Mastercard and VNG. Most at home with unit economics and pricing & packaging. I speak at conferences a couple of times a year.

Good reasons to reach out
  • Thoughtful intros to people in my field
Please don't message about
  • Offshore staffing offers
  • Agency or outsourcing pitches
Skills
unit economicstrust & safetypricing & packagingmatchingtwo-sided networks

Experience

  1. Group Product Manager
    Feb 2023 - Present
    Westpac · 3 yr 9 mo · Full-time · Tokyo, Japan
    • Killed 3 features nobody used and shipped the 3 that customers asked for.
    • Cut time-to-first-value for new marketplace customers from 16 days to 4.
  2. Associate Product Manager
    Jul 2020 - Feb 2023
    Mastercard · 2 yr 7 mo · Full-time · Tokyo, Japan
    • Killed 8 features nobody used and shipped the 2 that customers asked for.
  3. Associate Product Manager
    Sep 2017 - Jun 2020
    VNG · 2 yr 9 mo · Contract · Tokyo, Japan
    • Took marketplace activation from 28% to 42% in three quarters.

Projects

Conference talk: lessons from marketplace
2026

What went wrong and what worked while scaling marketplaces.

Write-up: marketplaces in practice
2025

A long-form guide to marketplaces for people starting out.

References

No references yet.

Education

  1. University of Indonesia
    BSc, Engineering
    2012 - 2016

Details

Compensation expectations
What they are targeting for their next role.
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Direct contact details
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