# William Chieng

> Engineer

Location: Berkeley, California, United States
Profile: https://flows.cv/williamchieng

## Work Experience
### Software Engineer @ LaunchDarkly
Jan 2024 – Present

### Staff Software Engineer @ Crunchyroll
Jan 2019 – Jan 2023 | San Francisco, California, United States
- Wrote, tested, and deployed code to build first party and third party features/integrations in the Subscriptions and Payments domains for 8+ years.
-- Examples: price localization, marketing promotions/collaborations/incentives, tiers, free trial eligibility, regional benefits, checkouts, renewals
- Led the architecture, implementation, and deployment of migrating all subscriptions from monolith to microservices.
- Collaborated with technical and nontechnical stakeholders on business requirements and technical integration. Example: Coordinated with Subscriptions, Data, Business Intelligence, Finance teams to support existing analytics/financial reports pre-/mid-/post-migration.
- Collaborated closely with Quality Engineering and DevOps to optimize service to scale for major content releases (high traffic).
-- Migrated from images on AWS EC2 to containers deployed on EKS → new API instances in seconds instead of minutes.
-- Load tested to ensure the service handles sudden traffic spikes (X requests per minute, Y minutes of ramp-up from 0), while meeting availability & latency targets.
-- Extensively documented learnings and methodology for other teams.
- Pioneered and documented how to adopt new technologies across the engineering organization. Example: Datadog integration.
- Mentored engineers through architecture reviews, code reviews, pair programming, dungeon-mastering incident response scenarios.
- Interviewed candidates for various roles in the engineering organization (application backend engineers, infrastructure engineers), from junior to principal level.

### Senior Secure Applications Engineer @ Crunchyroll
Jan 2017 – Jan 2019 | San Francisco, California, United States

### Software Engineer @ Crunchyroll
Jan 2015 – Jan 2017 | San Francisco, California, United States

### Associate Software Engineer @ Crunchyroll
Jan 2013 – Jan 2015 | San Francisco, California, United States

### Software Engineer Intern @ Crunchyroll
Jan 2012 – Jan 2013 | San Francisco, California, United States


## Education
### BA in Computer Science
University of California, Berkeley


## Contact & Social
- LinkedIn: https://linkedin.com/in/william-chieng-42453434

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Source: https://flows.cv/williamchieng
JSON Resume: https://flows.cv/williamchieng/resume.json
Last updated: 2026-04-11