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Interview questions by company and topic | SysRound

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60 questions

Showing 1–25

Machine learningHard
MNIST Loss Bounds per Example and an Adaptive Calibration Error (ACE) Implementation
Companies: OpenAI
ML Coding · Model Evaluation
Last reported Nov 2026
Open workspace
Machine learningHard
Point light source on a line: sample hits, check the density, recover the source by MLE
Companies: OpenAI
ML Coding · Sampling & Estimation
Last reported Oct 2026
Open workspace
Machine learningHard
Majority-Vote Labels from Three Noisy Annotators, Then Beat the Baseline
Companies: OpenAI
Annotation & Label Quality · ML Coding

Page 1 of 3

Last reported Oct 2026

Machine learningHard

Debug a Small PyTorch Transformer with Four Bugs, Then Add a KV Cache

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Sep 2026

Machine learningHard

Hand-Written Gradients: Prefix-Product Backward Pass and Stable Cross-Entropy

Companies: OpenAI

Arrays & Strings · ML Coding

Last reported Sep 2026

Machine learningHard

Vectorized 1-Nearest-Neighbor in NumPy and Its Equivalence to a Linear Layer

Companies: OpenAI

ML Coding

Last reported Sep 2026

Machine learningHard

Implement a minimal reverse-mode autograd engine on PyTorch tensors

Companies: OpenAI

ML Coding · Neural Networks & Training

Last reported Sep 2026

Machine learningHard

Implement a 1-Nearest-Neighbor Classifier with a Manhattan-Distance Follow-Up

Companies: OpenAI

ML Coding

Last reported Sep 2026

Machine learningMedium

Debug a Transformer Implementation and Implement a KV Cache for Decoding

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Sep 2026

Machine learningMedium

Vectorize One-Nearest-Neighbor and Express It as a Neural Forward Pass

Companies: OpenAI

ML Coding · Neural Networks & Training

Last reported Aug 2026

Machine learningMedium

Implement Masked Cross-Entropy with Label Smoothing

Companies: OpenAI

ML Coding

Last reported Jun 2026

Machine learningMedium

Implement 1NN with NumPy

Companies: OpenAI

ML Coding

Last reported May 2026

Machine learningMedium

Compute entropy and implement 1-NN

Companies: OpenAI

ML Coding

Last reported Apr 2026

Machine learningMedium

Derive Sharded Matrix Multiplication and Backpropagation

Companies: OpenAI

ML Coding · Neural Networks & Training

Last reported Apr 2026

Machine learningMedium

Debug MiniGPT and Backpropagate Matmul

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Apr 2026

Machine learningHard

Implement Backprop for a Tiny Network

Companies: OpenAI

ML Coding · Neural Networks & Training

Last reported Apr 2026

Machine learningHard

Compute Matrix Prefix Products And Gradients

Companies: OpenAI

ML Coding · Neural Networks & Training

Last reported Apr 2026

Machine learningMedium

Debug a Broken Transformer

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Mar 2026

Machine learningMedium

Implement NumPy neural-network layers

Companies: OpenAI

Debugging · ML Coding

Last reported Feb 2026

Machine learningMedium

Debug Transformer and Add KV Cache

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Feb 2026

Machine learningHard

Debug a broken Transformer implementation

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Jan 2026

Machine learningHard

Debug and fix a PyTorch Transformer training loop

Companies: OpenAI

ML Coding · Transformers & Attention

Last reported Oct 2025

Machine learningHard

Implement and analyze custom attention

Companies: Anthropic

ML Coding · Transformers & Attention

Last reported Sep 2025

Machine learningMedium

Implement and Debug Backprop in NumPy

Companies: OpenAI

Debugging · ML Coding

Last reported Sep 2025

Machine learningMedium

Implement and derive backprop from scratch

Companies: Anthropic

ML Coding · Neural Networks & Training

Last reported Sep 2025