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Doppel

Machine Learning Engineer

Doppel, New York, New York, us, 10261

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Overview

Doppel is the first platform built to dismantle digital deception at scale. We scan over 150 million entities daily and deploy continuously adaptive AI SOC agents—paired with expert human analysts—to uncover and disrupt the infrastructure behind phishing, impersonation, and online fraud before attacks can spread. Our Threat Grid turns every customer signal into shared intelligence, making each disruption smarter, faster, and more effective. We’re not just another cybersecurity company. We’re defining the future of social engineering defense—where trust is protected, and deception becomes unprofitable. Backed by top-tier investors and trusted by some of the world’s most recognized brands, Doppel is growing fast. If you’re driven to solve real-world problems with bold technology, we’d love to meet you.

What We're Building

We’re building the AI-native social engineering defense platform. This means we’re designing scalable systems that monitor billions of domains, social media accounts, apps, dark web forums, etc., and leverage AI agents to identify and neutralize digital threats.

What We're Looking For

We’re looking for a machine learning engineer to help build and scale the models and systems that power Doppel’s detection systems. As an MLE at Doppel, you will:

Design, train, and deploy models for both batch and real-time inference that identify malicious or infringing content across diverse data sources.

Partner closely with the Detection and Infrastructure teams to ensure our ML systems scale with the volume of web data we ingest

Work on problems that range from NLP and embeddings to similarity search, classification, and anomaly detection

Collaborate directly 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

Are comfortable working with large-scale datasets and distributed data processing frameworks

Understand the trade-offs between research-quality models and production-ready systems

Are excited about solving real-world problems where the adversary is constantly evolving

What We Offer A 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

About Us

Doppel is the first platform built to dismantle digital deception at scale. We scan over 150 million entities daily and deploy continuously adaptive AI SOC agents—paired with expert human analysts—to uncover and disrupt the infrastructure behind phishing, impersonation, and online fraud before attacks can spread. Our Threat Grid turns every customer signal into shared intelligence, making each disruption smarter, faster, and more effective.

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