Overview
Work History
Education
Skills
Timeline
Generic

Yujie Zhu

Seattle,WA

Overview

4
4
years of professional experience

Work History

Software Engineer

Eigen Labs
Seattle, WA
09.2024 - Current
  • Build a scalable data metrics pipeline, aggregating and deduplicating streaming and exported EigenDA blob and payments metadata from DynamoDB, transforming JSON into Parquet format in AWS Glue, and configuring Athena for scheduled queries consumed by L2Beat, BI dashboards, blob explorer, and debugging tools.
  • Architect and deploy AWS infrastructure from scratch for multiple environments (e.g., Sepolia, Holesky, Mainnet-Ethereum, etc.), including Kubernetes, EC2, S3, DynamoDB, Kinesis, VPC networking, etc.
  • Reduced cloud costs through automation and benchmarking, including EC2 instance scheduling, instance-type performance testing, and evaluating AWS private pricing, and third-party tools like nOps.
  • Improved system reliability and performance monitoring by implementing component-level liveness checks, health probes, and heartbeat monitors in EigenDA V2; developed caching mechanisms, and observability dashboards with alerting.
  • Addressed critical security issues from audit reports, such as adding signature replay protection, and fixing payment calculation logic to ensure pricing consistency.

Software Engineer

Amazon
Seattle, WA
05.2021 - 08.2024
  • Designed and implemented an AWS CDK service to automate bad host detection and removal, completely eliminating the necessity for human intervention and reducing Sev-2 tickets by 7 monthly.
  • Developed a low-level design for request generation, data ingestion, and notification components of the service integration analyzer system. Implemented automatic detection of anti-patterns, sending notifications using Python and AWS CDK.
    Onboarded three core AWS services to the analyzer.
  • Redesigned the KMS authorization workflow to detect confused deputy misuse by introducing new metrics with negligible performance impact; led a campaign to drive adoption and compliance across services.
  • Engineered and implemented an event notification system utilizing AWS Lambda to monitor events from DynamoDB tables and broadcast to the designated event bus. Scaled up the system to handle over 10k TPS.

Education

Master of Science - Computer And Information Sciences

University of Washington
Seattle, WA
03-2021

Bachelor of Arts - Music

Washington University in St. Louis
St Louis, MO
05-2018

Skills

  • Kubernetes
  • AWS
  • Databases
  • Git
  • TypeScript
  • Golang
  • Java
  • Python

Timeline

Software Engineer

Eigen Labs
09.2024 - Current

Software Engineer

Amazon
05.2021 - 08.2024

Master of Science - Computer And Information Sciences

University of Washington

Bachelor of Arts - Music

Washington University in St. Louis

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Yujie Zhu