geodesic partners

HFT Quant helping fellow mathematicians, engineers break into quant finance

United Kingdom Joined on Oct 1, 2026 https://geodesicpartners.co.uk/

geodesic partners

Nov 8

Backpropagation from scratch in NumPy: let the shapes do the work

#machinelearning #python #numpy #interview

3 min read

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geodesic partners

Nov 7

A good bet on a prediction market is still a bet: arbitrage, expected value and Kelly

#probability #finance #math #statistics

2 min read

geodesic partners

Nov 6

Hash maps in coding rounds: picking the key is the hard problem

#algorithms #interview #python #datastructures

3 min read

geodesic partners

Nov 5

Coins 1, 5, 6 and 9: where greedy gets change wrong and a DP table doesn't

#algorithms #dynamicprogramming #interview #python

3 min read

geodesic partners

Nov 4

Why variance can come out negative in code, with Welford's fix and notes on tied AUC and Spearman

#machinelearning #python #numpy #interview

3 min read

geodesic partners

Nov 3

Why softmax returns NaN at a logit of 710, and the one-line fix

#machinelearning #python #numpy #interview

3 min read

geodesic partners

Nov 2

Two pointers: stop testing pairs and start ruling values out

#algorithms #interview #python #programming

2 min read

geodesic partners

Nov 1

The sliding window trick, and the one input that breaks it

#algorithms #interview #python #programming

3 min read

geodesic partners

Oct 1

I put my whole coding interview course online: 8 patterns, 24 problems, 6 languages

#interview #algorithms #career #programming

2 min read