ChangZhuo Chen (陳昌倬)

I am staff engineer in Netskope, where I had been working on data team to develop and maintain data pipeline. I have compute science master degree in NTHU.

I have been learning to priorize my works, and using novel technologies like Kubernetes, Argo, Flink, to solve critical business problems with high resource constraints due to Appier fast growing from series A to IPO. I also learn how to cooperate with people around the world via asynchronous communication as Debian Developer.

I am looking forward to seek new opportunity which can further expand my technical and leadership skills.

Working Experience

Staff Engineer, Netskope, Taipei 2024-03 ~ present

Maintain authentication service for internal services, and client data ingestion:
- Design and implement service to service authentication and authorization on Google KMS, JWT
- Design and implement key rotation procedures.

Staff Engineer, Appier, Taipei 2014-11 ~ 2024-03

Design and implement GitOps platform, Common Application Platform Operation Orchestrator:
- Manage 1.4k+ applications CD processes across 10 teams via Argo CD, and Go template.
- Provide easy to use CI via Argo Workflows.
- Provide observability via auto Grafana dashboard, SigNoz and OpenTelemetry infrastructure.
- Enforce infrastructure best practice via GateKeeper/Open Policy Agent.
Design and implement Retargeting pipeline:
- Design and implement near real-time (< 5s), high throughput (avg 60K, max 1.7M QPS) stateful rule based matching for user behaviors retargeting via Apache Flink.
- Reduce 20% ~ 50% of cost in various components via Kubernetes, autoscaling, and spot VM.
- Provide strategic advantage over competitors in iOS 14 IDFA-less privacy enhancement by low latency (P50 ~ 300ms) user id mapping via Apache Flink.
Deliver fast for high impact business requirements:
- Migrate near real-time pipeline, with 10+ apps, from AWS to GCP on the fly in 2 weeks.
- Workaround bloom filter false positive issue to make 60% revenue customer profitable in 3 days.

Senior Engineer, Trend Micro, Taipei 2010-12 ~ 2014-11

Reduce 80% of time to generate scanning result via VMWare, MySQL.
Reduce 20% ~ 99.99% of scanning time in VSAPI Android/ARM via build/compiler configuration.
Provide one-click feature/regression test in Linux via Borland SCTM, VMWare.

Senior Engineer, BenQ/Qisda, Taipei 2006-10 ~ 2010-12

Increase automation rate from 20% to 80%, and can run 24/7 for GCF/PTCRB certificate.

Open Source

Developer/Application Manager, Debian 2013-09 ~ present

Co-organize DebConf18, which is the First DebConf in Asia, with 200+ participants globally in NCTU.
Maintain 170+ packages with 10+ development groups.

Developer, 新酷音輸入法 (Intelligent Chinese phonetic input method library) 2012-09 ~ present

Increase unit test coverage from 0% ~ 81%, and integrate with CI via travis-ci, coveralls.io, and coverity.
Implement 800 times faster dynamic programming based algorithm to enhance composition performance.

Skills

Languages:
- Mandarin (native)
- English (professional working proficiency)
Programming:
Frameworks:
- Apache Flink
- Apache Spark
Infra:

Education

Master, National Tsing Hua University, Hsinchu 2004-09 ~ 2006-07

Bachelor, National Chiao Tung University, Hsinchu 2000-09 ~ 2004-07