Preethi Kumar
@preethi-kumar
iOS engineer at Airbnb. Swift, SwiftUI, performance obsessive.
The proof graph
22 proofs · 26 weeksProven across 1 domain
The trophy case
Preethi Kumar is building their record on Powstik.Preethi Kumar is building their record on Powstik.
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Passed AWS Solutions Architect exam, scored 892/1000
Deployed CLI agent that writes commit messages from git diff using GPT-4
Built zero-downtime deployment pipeline with blue-green strategy
Refactored authentication system to eliminate 3,200 lines of duplicate session handling
Contributed CUDA kernel optimization reducing inference latency by 34%
Completed Stanford's CS231n: Convolutional Neural Networks for Visual Recognition
Contributed CUDA kernel optimization reducing inference latency by 34%
Completed Advent of Code 2024 Day 18 — shortest path in a corrupted memory grid
Refactored authentication system to eliminate 3,200 lines of duplicate session handling
Refactored authentication system to eliminate 3,200 lines of duplicate session handling
Passed AWS Solutions Architect exam, scored 892/1000
Completed first pull request to open source project, merged after 2 rounds of review
Deployed CLI agent that writes commit messages from git diff using GPT-4
Implemented RAG pipeline with LangChain and Pinecone — first real embedding search working
Shipped observability stack: OpenTelemetry + Jaeger + Grafana for our microservices
Completed Stanford's CS231n: Convolutional Neural Networks for Visual Recognition
Built zero-downtime deployment pipeline with blue-green strategy
Built first TypeScript compiler plugin — validates custom decorators at compile time
First code review as senior — gave feedback on a junior's auth implementation
Passed Google L5 interview after 3 months of targeted preparation
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