Machine Learning Engineer, Detection (SF/NY)
Doppel · San Francisco, New York
About this role
## Machine Learning Engineer, Detection (SF/NY) ### About Doppel Doppel is building the future of social engineering defense. Our AI-native platform uses agentic AI to protect executives, employees, customers, and brands from phishing, impersonation, fraud, and other AI-powered threats across digital channels. We help recognized brands detect and dismantle attacker infrastructure while strengthening employee resilience through threat-informed training and simulation. ### What you’ll be building You’ll help build and scale the AI-native social engineering defense platform—designing scalable systems that monitor billions of domains, social media accounts, apps, dark web forums, and more, using AI agents to identify and neutralize digital threats. ### What we’re looking for As a Machine Learning Engineer (MLE) at Doppel, you will: - Design, train, and deploy models for both **batch** and **real-time** inference to identify malicious or infringing content across diverse data sources. - Partner closely with the **Detection** and **Infrastructure** teams to ensure ML systems scale with the volume of web data ingested. - Work across problems including **NLP and embeddings**, **similarity search**, **classification**, and **anomaly detection**. - Collaborate with customers and internal stakeholders to translate real-world threats into production ML systems. You may be a fit if you have: - Experience building and deploying ML systems in **production** environments. - Comfort working with **large-scale datasets** and **distributed data processing** frameworks. - Understanding of trade-offs between **research-quality** models and **production-ready** systems. - Excitement about solving real-world problems where the adversary is constantly evolving. ### Bonus / Learn more Check out Doppel’s ML platform setup here: https://www.doppel.com/blog/battling-scams-at-scale-inside-doppels-high-throughput-ml-platform?utm_source=chatgpt.com ### What we offer - 🚀 Mission-driven culture with low ego, high ownership, deep customer obsession, and exceptional talent density - 🍽️ Free lunch and dinner in the office - 🌴 Flexible PTO - ✈️ Quarterly team offsites ### Why Doppel Doppel scans over **150 billion entities daily** and deploys continuously adaptive AI SOC agents—paired with expert human analysts—to uncover and disrupt the infrastructure behind phishing, impersonation, and online fraud before attacks spread. If you’re driven to solve real-world problems with bold technology, we’d love to meet you.
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