Hiring: Senior Applied AI Engineer Company: Proofpoint Location: Salt Lake City, UT Job Posted Time: 2026-09-15 23:46:45 Target Skills & Keywords : Fine-tuning, Make, Move About the job Required Skills: •AI is moving faster than any single product team can keep up with. For a security company, the hard question isn’t “can a model do this?” It’s which approach actually works, what it costs, how fast and reliable it is, and whether it’s worth building at all. That’s what this team answers. We’re an •, and research is our product. We take important questions the company can’t yet answer and turn them into evidence people can act on. •Answer hard questions with evidence. Take a question nobody has answered yet. Make it testable, set a baseline, run the smallest experiment that settles it, and come back with an answer the company can act on. •Build systems that improve themselves. A lot of our agentic work runs in long loops run an evaluation, study the results, produce a better version, run it again. You’ll build systems that improve on their own and recover when they go wrong. •Make agent behavior measurable. Extend our evaluation platform so we can tell whether an agent is genuinely good - task suites, regression checks, and honest tradeoffs between quality, cost and speed. It’s something we build and maintain for the whole company. •Work across hosted and self-hosted models. Most of what we do runs on third-party model APIs. We also serve open-weight models on our own GPUs and are pushing further into fine-tuning and efficient serving. You’ll help us work out which jobs suit which. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!