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Principal ML Architect – Security AI & Advanced Model Systems

Proofpoint

SunnyvaleFull-timeHybrid

Posted 12 May 2026

About this role

Lead the design and development of next-generation AI systems and agents for cybersecurity, focusing on threat detection and data protection. Drive the innovation of LLMs/SLMs while ensuring model robustness, scalability, and compliance in adversarial environments. Requires over 10 years of experience in ML/AI systems with a proven track record of delivering production-grade AI at scale. Deep technical expertise in Transformer architectures, RAG, and distributed training frameworks is essential, alongside strong security domain knowledge.

What they're looking for

Machine Learning ArchitectureLarge Language ModelsSmall Language ModelsPyTorchDeepSpeedRAGModel DistillationFine-tuning

Frequently asked questions

What does a Principal ML Architect – Security AI & Advanced Model Systems at Proofpoint do?

Lead the design and development of next-generation AI systems and agents for cybersecurity, focusing on threat detection and data protection. Drive the innovation of LLMs/SLMs while ensuring model robustness, scalability, and compliance in adversarial environments. Requires over 10 years of experien…

What skills does this Principal ML Architect – Security AI & Advanced Model Systems role need?

Key skills for this role include Machine Learning Architecture, Large Language Models, Small Language Models, PyTorch, DeepSpeed, RAG.

How much does a Principal ML Architect – Security AI & Advanced Model Systems at Proofpoint pay?

The employer did not list a salary for this role. Most similar Singapore roles publish their band on the job page.

Is this Principal ML Architect – Security AI & Advanced Model Systems role remote, hybrid, or on-site?

This role is hybrid, based in Sunnyvale.

How do I apply for this Principal ML Architect – Security AI & Advanced Model Systems role?

You can apply directly on Proofpoint's careers page. ApplyLah can tailor your résumé and cover letter to this exact role in seconds first.