RejectedTechnical Screen

A Time-Series Pipeline Coding Screen

VoleonMachine Learning Engineer · Technical Screen · Sep 2026

After recruiter outreach, the author agreed to interview with Voleon and reports being rejected after a 90-minute machine-learning coding session. The exercise involved a pipeline with roughly five tasks and a CSV dataset containing time-series observations. The author remembers debugging, changing model parameters, running results, and extending the pipeline for inference, but not the remaining…

Shared by a candidate · reported Sep 2026. Interview formats change; use it as a guide, not a script.