Develop frontier language models and agents. Training, reinforcement learning, and inference in one system, on River Cloud or your own GPU cluster. Backed by General Catalyst.
About the role
We are seeking a deeply technical, operationally rigorous Security lead to build and lead security from the ground up. As our first security hire, you will define how we protect our research infrastructure, model weights, corporate assets, and customer-facing platform—without slowing the pace of frontier AI development. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- 10+ years in security with significant experience with a technology company, AI preferred
- Proven track record as a first or early security executive in a high-velocity, high-stakes environment, comfortable setting strategy while remaining close to tooling, architecture, and incident command
- Deep expertise in two or more of: detection engineering, incident response, digital forensics, infrastructure security, product/application security, operational security, or secure software development
- Direct experience securing cloud-native, large-scale distributed systems, container/VM environments, and high-performance compute clusters
- Demonstrated ability to build and ship security tooling or research projects—whether internal platforms, open-source tools, or commercial security products
- Strong cross-functional presence: you can translate technical risk for executes, partner with research leads on novel threat models, and review code or architecture
More about this role
At River AI, our mission is to create personal AI owned and shaped by each individual. To achieve this, we are rewriting the entire stack from scratch: personal hardware for local inference, bespoke training infrastructure, next-generation UIs, and frontier deep learning research.
We are scientists, engineers, and builders from the industry's top tech companies and AI labs. We bring a proven track record of scaling consumer systems for hundreds of millions of users and architecting the pre-training infrastructure behind today's frontier models.
We are seeking a deeply technical, operationally rigorous Security lead to build and lead security from the ground up. As our first security hire, you will define how we protect our research infrastructure, model weights, corporate assets, and customer-facing platform—without slowing the pace of frontier AI development.
This role calls for a blend of hands-on engineering leadership, program development, and strategic vision. You will be expected to stand up world-class capabilities across cybersecurity, detection and response, product security, and operational security, while treating security as an enabler of development rather than a...
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