Positron AI is building next-generation AI inference accelerators designed from the ground up for low-latency, high-throughput large language model inference. Chips built for the training era keep running into two walls at inference time: memory bandwidth and chip-to-chip networking. We designed our architecture to break through both. Our first-generation Atlas systems are already in production on Oracle Cloud Infrastructure. Asimov, our first custom ASIC, takes that architecture to silicon. In simulations, Asimov delivers several times more tokens per dollar and tokens per watt than leading GPUs, at a fraction of the power. Paired in our Titan system, Asimov is built to serve models beyond 16 trillion parameters. In September 2026, we raised $875 million at a $5 billion valuation. NEA led the round, joined by Atreides Management, Valor Equity Partners, and others, to bring Asimov and Titan to market. Our team includes engineers from Groq, Lambda, NVIDIA, Meta, F5, and many other industry leaders.
As Positron scales, our engineering environment is evolving from a primarily on-prem footprint to a hybrid-cloud model. We are looking for a Senior or Principal Infrastructure Security Engineer to secure and manage that transition. You will own identity and access management, cloud infrastructure for our developers, infrastructure as code, and the core developer tooling our hardware and software teams depend on every day. This is a hands-on, high-ownership role where you will define the foundations: how engineers authenticate, how infrastructure is provisioned and segmented, how secrets and artifacts are stored, and how we detect and respond to threats against our most critical systems.
While this role is currently posted at a specific level, we are a growth-oriented organization and are open to hiring at a more senior level for the right candidate. Please note that this job description serves as a focused but generalized overview of the role; specific responsibilities and impact expectations will be tailored to the experience and seniority of the final hire.
In your first three to six months, you will have defined and stood up our identity foundation, with Auth0 and RBAC in place across key systems. Developers will be provisioning cloud infrastructure through infrastructure as code, and the migration from on-prem to hybrid cloud will be well underway on a secure, segmented footing. A SIEM solution will be live and monitoring our critical infrastructure, giving the team real visibility and a clear path to detect and respond to threats.
Why Join Us?
The base salary range for this role is Senior: $170,000 – $250,000, Principal: $250,000 - $325,000.
Please note that the figures provided represent the base salary range only and do not include other elements of our total compensation package, equity, or comprehensive benefits.
At Positron AI, we value the unique expertise each candidate brings. While the range above reflects our typical expectation for the position, we reserve the flexibility to exceed this range for candidates whose specialized skills, significant experience, or unique qualifications fall outside the standard scope of the role. Final offers are determined based on a variety of factors, including internal equity, and individual impact.
We want you to do your best work and feel confident that you and your family are taken care of. That means comprehensive coverage, real time to rest, and support for your future.
This position is open to candidates currently authorized to work in the U.S. We cannot provide new visa sponsorship for this role but are open to facilitating H-1B visa transfers for eligible candidates.
Equal Opportunity Employer. If you're excited about the role but don't meet every bullet, we'd still love to hear from you.
Positron delivers vendor freedom and faster inference for both enterprises and research teams, by allowing them to use hardware and software explicitly designed from the ground up for generative and large language models (LLMs).
Through lower power usage and drastically lower total cost of ownership (TCO), Positron enables you to run popular open source LLMs to serve multiple users at high token rates and long context lengths. Positron is also designing its own ASIC to expand from inference and fine tuning to also support training and other parallel compute workloads.
