Machine Learning Engineer (New York)

Why Join Doppel

Doppel is built to outsmart one of the great threats AI presents : mass-manufactured social engineering. Countless scams, deepfakes, and other social engineering attacks are surging across every digital channel : websites, social media, ads, encrypted messaging apps, mobile, and more. Our mission is simple but bold : make the internet a safer place by outsmarting the worlds fastest-evolving online threats.

Backed by top-tier investors and trusted by some of the worlds most recognized brands, Doppel is growing fast. If youre driven to solve real-world problems with bold technology, wed 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

Were looking for a machine learning engineer to help build and scale the models and systems that power Doppels detection systems. Check out our blog post on how we set up our ML platform. 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 agentspaired with expert human analyststo 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.

Were not just another cybersecurity company. Were defining the future of social engineering defensewhere trust is protected, and deception becomes unprofitable. Backed by top-tier investors and trusted by some of the worlds most recognized brands, Doppel is growing fast. If youre driven to solve real-world problems with bold technology, wed love to meet you.