Hi, I’m Cai Lin

Software Engineer at Amazon Web Services (AWS) based in New York. I build distributed systems, SDKs, and AI-powered pipelines.

Experience

Amazon, AWS — Software Engineer (June 2025 – Present)

  • Designed a Smithy-based code generation framework replacing legacy service modeling across 420+ services, reducing manual SDK integration effort by ~40%
  • Delivered the #2 most requested customer feature (custom endpoints), increasing private endpoint adoption by 33%
  • Deployed a CloudFormation Step Functions pipeline for cross-platform SDK builds; cut build validation time by 60% and increased test coverage from 75% to 93%
  • Integrated bidirectional streaming with Amazon Bedrock’s Nova Sonic model, decreasing end-to-end response latency by 40%

Capital One — Software Engineer (Oct 2024 – June 2025)

  • Designed and maintained an in-house CloudFront-style service using Lua and NGINX, routing millions of internal API requests per day
  • Optimized 50+ AWS Lambda functions, improving execution efficiency by 30%
  • Created an automation service enabling 3000+ internal teams to onboard apps onto static cloud
  • On-call engineer for the API Gateway service, resolving 100+ tickets with <5 min median response time

Conatix Corp — Senior Software Engineer (July 2022 – Oct 2024)

  • Built and trained a neural network model for malware detection, achieving 91% accuracy
  • Deployed and scaled the prototype on AWS EC2 + Docker, reducing response time by 40% for 500+ concurrent users

Education

City University of New York — Master of Computer Science (2024)

Skills

Languages: Java, C++, C#, Python, JavaScript, Go, SQL, Lua

Infrastructure: AWS, Azure, Kubernetes, Docker, Terraform, Kafka, CI/CD, CloudFormation

Web: React, Node.js, Django, Flask, TypeScript, REST APIs

ML/Data: Pandas, Scikit-learn, Neural Networks, NLP

Monitoring: CloudWatch, Splunk, Log-based Debugging, On-call Incident Management

Certifications

  • Google Cybersecurity Certificate (2024)
  • J.P. Morgan Software Engineering Virtual Experience (2024)
  • Meta Back-End Developer Professional Certificate (2023)
  • Harvard’s Computer Science Certificate (2022)