Senior Transformer Engineer Anti Spam

Apply transformer expertise to anti spam engineering remotely in Canada. Train practical PyTorch models and measure CPU inference for email protection.As a Senior ML Engineer, you will own classifier development across preparation, evaluation, deployment, and improvement. The position combines masked language pre training, fine tuning, tokenizers, ONNX export, and production performance measurement. You will also support an efficient email filtering engine and explain model scoring clearly.Key Responsibilities:
Build and maintain training corpora for spam detectionSelect thresholds and analyze precision and recallTrain transformers and measure CPU inference performanceReview classifier, rule, and model changesDocument technical decisions, specifications, and post mortemsRequirements:
Five or more years in consequential detection systemsHands on PyTorch transformer training experienceExperience independently releasing a machine learning classifierPython, Linux, shell scripting, and shared server experienceRegular use of AI coding agents and toolsBring transformer training, classifier ownership, and technical communication to practical email security model development.
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