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Blaxel

The perpetual sandbox platform

Y CombinatorSpring 2025ActiveB2BArtificial IntelligenceDeveloper ToolsCloud ComputingInfrastructure

What they do

Problem

AI agents need secure, low-latency code execution environments that don't suffer from cold starts or expiring sandboxes at scale.

Solution

Blaxel provides a perpetual sandbox platform that scales to zero after brief inactivity and resumes in milliseconds with full memory state preserved while co-locating agent logic to reduce network overhead.

Who it's for

Developers and teams building AI agents that run code and require millions of always-ready secure sandboxes.

Founders

Paul Sinaï
CEO & Co-Founder

Co-founder & CEO @ Blaxel - I'm a repeat entrepreneur; I founded two startups and sold the last one to the largest European cloud provider to become their analytics products suite. Currently, I'm working on an exciting project at Blaxel, where my team and I are focused on building the next generation of cloud for AI Agents. From the Infrastructure to the UX, we are redesigning the entire stack for the Agentic world.

Thomas Crochet
Founder

Building the front-end for AI agents @Beamlit

Charles Drappier
Founder

I'm a Co-founder & Developer at Blaxel, the AWS for AI Agents. I have 15 years of experience building cloud infrastructure products with a successful exit. At Blaxel, we provide AI builders with the infrastructure they need to develop and scale intelligent agents efficiently. I'm focused on creating the essential technology backbone for the next generation of AI applications.

Mathis Joffre
Founder

I’m the co-founder and engineering lead at Blaxel, where I’m building the infrastructure layer for AI agents. My background spans cloud systems, microVMs, and distributed compute — from designing next-gen architectures at OVHcloud and developing tooling across large-scale network environments. I’m focused on creating an AI-native platform that makes deploying and scaling agentic applications simple, reliable, and accessible to every developer.

Nicolas Lecomte
Founder

Building Blaxel, the cloud for your AI agents.

Christophe Ploujoux
Founder

Addict software developper, with 8 years of experience at ForePaaS, where I contributed to launch a PaaS for Data and AI projects, I developed a deep understanding of building scalable platforms that empower innovation. This experience inspired me to create Blaxel, an end-to-end platform for AI agents, aimed at simplifying the development, deployment and management of AI solutions for businesses. My passion lies in bridging complex technology with real-world applications, making advanced AI

Open roles 6

Site Reliability Engineer
San Francisco · Full-time · $175K - $250K · 0.05% - 0.50%
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Forward Deployed Engineer (FDE)
San Francisco · Full-time
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Fullstack Design Engineer
San Francisco · Full-time
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Site Reliability Engineer
San Francisco · Full-time
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Forward Deployed Engineer (FDE)
San Francisco · Full-time
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Fullstack Design Engineer
San Francisco · Full-time
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