Arcjet just pulled a gravity assist in the DevSecOps orbit, closing an $8.3M Series A that feels more like a launch sequence than a funding round. Founded in 2023 by David Mytton, this San Francisco crew is embedding AI-powered defenses straight into application code, no middlemen, no lag, no nonsense. The round was led by Plural and Ott Kaukver, ex-CTO of Twilio & Checkout.com, with Andreessen Horowitz and Seedcamp doubling down. Strategic angels Jeff Lawson (former Twilio CEO) and Feross Aboukhadijeh (CEO of Socket) also joined, adding serious firepower to an already loaded deck.
David Mytton isn’t just another founder playing startup roulette. He built Server Density, sold it to StackPath, and launched Console.dev, a newsletter that became a must-read for devs who care about more than hype. Now he’s taking a swing at the old-school security model that still treats the perimeter like a fortress wall in a drone war. Arcjet flips that thinking by shifting protection into the codebase itself, where it can read the situation in real time. The platform’s local-first AI model detects and neutralizes attacks from inside request handlers, keeping defenses context-aware and latency-free. It’s like giving your app a sixth sense instead of a security guard with bad eyesight.
Over 1,000 developers are already running Arcjet in production, locking down more than 500 live apps that process millions of requests daily. The system’s powered by AWS Global Accelerator with anycast routing, holding a p50 latency of just 20–30 ms, fast enough to stop a hit before it lands. In a world where bot attacks cost $116B a year and 37% of all web traffic is malicious, Arcjet isn’t just playing defense, it’s rewriting what modern code protection looks like. Their WebAssembly modules, compiled from Rust and tied to JavaScript through WIT, make it local, private, and brutally efficient.
This raise brings total funding to $12M, fueling an expansion of Arcjet’s native AI model, new developer workflows, and global low-latency deployments. They’re hiring for engineering, DX, and ops roles because growth doesn’t wait for perfect timing, it waits for no one. Advisors like Zane Lackey from Andreessen Horowitz, Carlos Eduardo Espinal from Seedcamp, and Plural’s Sten Tamkivi are sharpening the playbook while Ott Kaukver and Jeff Lawson help connect the dots from Twilio-scale experience to developer-first execution.
Arcjet isn’t just patching leaks, it’s making code self-aware enough to dodge the bullets. A new layer of digital armor built inside the logic, not bolted onto it. The future of app security just got personal, and it’s running at the speed of code.
