An Applications Engineer at Cosine works across research, engineering, product, and design to deliver advanced AI capabilities to consumers and enterprises.
You will be responsible for the core infrastructure powering Cosine’s products, including our Kubernetes environments, deployment pipelines, networking stack, cloud abstractions, and foundational platform services.
We build systems that enable rapid product iteration while maintaining operational excellence, with a strong emphasis on enterprise-grade reliability. Our work includes supporting large‑scale deployments for regulated industries, delivering hardened on‑premises installations, and ensuring secure, isolated environments for customers with stringent operational or compliance requirements
The Cloud Infrastructure engineer develops and maintains the infrastructure abstractions that allow Cosine to ship products reliably, securely, and at scale.
In this role, you will:
Cosine builds infrastructure, tooling, and products that make advanced AI systems practical, powerful, and widely accessible. This includes enterprise‑grade and fully on‑premises deployments designed for customers requiring strict isolation, compliance, or custom security postures. We support bespoke model hosting, fine‑tuned and custom models tailored to domain‑specific workflows, and deep integration with customer infrastructure. Cosine also offers a collaborative coding agent platform built for teams and enterprises, enabling secure, auditable AI‑assisted software development across complex codebases.
We create and deploy AI with a focus on performance, robustness, and real‑world impact. Achieving this requires a team that reflects a wide range of perspectives, backgrounds, and experiences.
Cosine is a fully agentic SWE that allows you to instantly work on every single ticket at once, asynchronously.
Location
London, England, GB
Experience
3+ years
Total raised
$3.0M
Last stage
Seed
Investors
No applications, no recruiter spam. Just the intro.
A few questions to make sure this role is the right shape for you. Two minutes.
I write the intro, send it to the founder, and handle the back-and-forth.
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.