Giang K
Software Engineer II at Amazon | GHC 2024
- Role
- Software Development Engineer Ii at Amazon
- Location
- Seattle, WA, US
- LinkedIn followers
- 500 followers
About Giang K
Backend and distributed systems engineer specializing in real-time pub/sub platforms, multi-region WebSocket systems, and large-scale event-driven architectures. Experienced in building and optimizing AWS-backed systems using Golang, Java, GraphQL, gRPC, Lambda, SQS, EventBridge, DynamoDB, EC2, and ECS/Fargate. Passionate about reliability engineering, performance tuning, concurrency correctness, and scalable cloud infrastructure.
Experience
Software Development Engineer Ii
Jan 2025 — Present · Seattle, WA, US
Increased reliability of AppSync’s distributed real-time data plane—serving millions of WebSocket connections across APIs in 30 global regions- Improved throughput and latency of AppSync’s real-time message broadcast system by load testing EC2-backed services, tuning thread pools, optimizing message fan-out paths, and reducing publish-to-broadcast latency- Modernized real-time GraphQL authentication architecture by designing and leading the migration of multiple backend services- Resolved race-condition issues in the Buy with Prime event platform, reducing canary test failure rates from ~30% to 0.1% and building automated monitoring for production traffic
Education
George School
High School
2015 — 2017
Grinnell College
Bachelor of Arts - BA, Computer Science
2017 — 2021
Hanoi Amsterdam High school
English Language and Literature, General
2013 — 2015
Hanoi Amsterdam High school
Chinese
2009 — 2013
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