Senior ML Engineer - Email Security (remote work)
Core
Build and deploy transformer-based ML models for real-time email spam and phishing detection on customer hosting servers.
Role type
Senior Machine Learning Engineer (Email Security)
Builds
Imunify Email security product (transformer models, inference service, mail-filter integration)
Domain
Cybersecurity / Email Security / Machine Learning
Deliverable
production ML models
Required skills
Transformer training (PyTorch), corpus construction, threshold selection, error analysis, Go, Linux, Python, ONNX export, CPU inference optimization
Preferred skills
Email internals (SMTP, MIME, SPF/DKIM/DMARC), embedded model creation, Go/Rust systems code, rspamd/SpamAssassin internals, multi-million-sample corpora, model quantization/distillation, LLM-based labelers
Technologies
PyTorch, Go, Linux, Python, ONNX, rspamd, SpamAssassin
Responsibilities
Train and release spam-detection models, build production inference service in Go, fix detection quality end-to-end, maintain corpus tooling and training infrastructure, review and approve model changes, answer partner engineers on scoring logic
Seniority
Senior, hands-on IC
