Senior Low Level Engineer - Infrastructure

Senior Low Level Engineer - Infrastructure Build the agent that Neo's whole product depends on: a privileged, cross-platform systems program written in Rust. Everything Neo shows a security team starts on the endpoint. The sensor is the organization's presence on each machine - responsible for collection, posture and visibility, and local enforcement of the organization's security policies. Doing that well means running deep in the operating system on Windows, macOS and Linux: always on, trusted with elevated access, and never in the way. This role owns the hard parts of it. What you'll work on The low-level, OS-level infrastructure the sensor is built on: the layer that handles low-level and OS-level operations directly and turns raw platform capabilities into reliable building blocks for everything above it - installation and deployment, endpoint security frameworks, network visibility, driver-adjacent work and more. Infrastructure that is the backbone of the product — code where stability, correctness, and quality aren't aspirations but the actual job, because every feature Neo ships stands on it. The sensor's core capabilities on top of that foundation: collection, posture and visibility, and local enforcement of the organization's security policies. Reliability engineering for software that can't fail quietly: crash handling, recovery, and keeping the agent healthy and hard to tamper with on machines no one is watching. The full lifecycle of a production system agent: how it ships, installs, updates, and runs unattended across a customer fleet. Tech you'll work with The work is low-level systems development in Rust, close to the operating system across Windows, macOS, and Linux - memory, processes, files, networking and the OS internals that expose them. Alongside that, you'll lean hard on agentic coding tools; deep fluency with at least one is central to how we work, not a bonus. Expect to range across the stack - OS internals, AI tooling internals, CI, and a fair amount of reverse engineering - and to learn the parts you don't know yet.