# Firmware Engineer, Secure Systems

> Sweep360 · New York, United States · Full-time · Posted 2026-07-06

**Salary:** USD 180,000–220,000

**Workplace:** on_site

**Department:** Engineering

## Description

**TL;DR – We’re building humanity’s defense layer for the AI age and are looking for a Firmware Engineer to build systems that operate in real environments and survive contact with reality.  
**

_If you would have joined Nest before connected devices became commonplace—or Figure AI before humanoids left the lab—to build the firmware that made them trustworthy, this is that role._

###   
Why Sweep?

As intelligent machines proliferate into every part of the physical world, we humans still lack a defense layer to ensure the systems and devices we rely on remain aligned with us.

We’re building that layer today by deploying alongside the world’s highest-stakes teams — Olympic delegations, F1 paddocks, halftime shows, global tours, studio productions, senior government officials, and executive protection units. What we learn there becomes the foundation for a civilization-defining capability.

We’re a small, talent-dense team with high ownership, high velocity, and low ego. We care deeply, move fast, and are here to build something that outlasts us.

Together, we’ll redefine cyber-physical security for the AI age.  

### What makes this role special?

-   One of the first 10 engineers shaping hardware systems pre-Series A.
-   Own firmware that leaves the lab and operates in some of the world’s highest-stakes environments.
-   Work directly with the hardware lead across EE, firmware, and embedded systems.
-   Operate in environments where hardware decisions have immediate consequences.
-   Partner with RF, ML, and product teams to deliver integrated systems.
-   Define the trust boundary between hardware and software.   
    

### What we’re looking for...

-   3–6 years writing systems-level firmware for embedded targets with real depth, not glue code on top of HALs
-   Strong command of C with the ability to adopt new systems languages (Rust, Zig, C++) when appropriate.
-   Proven background in red teaming, offensive security research, or adversarial testing targeting embedded systems and physical hardware.
-   Reasons about trust boundaries, failure modes, and adversarial inputs before they become vulnerabilities.
-   Thrived in an early-stage startup.
-   Comfortable operating without perfect specs or complete information.
-   U.S. Person status required (may involve export-controlled data).  
    

### Bonus if you’ve...

-   Shipped firmware on microcontrollers and OS-based embedded systems.
-   Written firmware for systems with secure boot, verified OTA, or hardware-enforced trust boundaries
-   Done RF/SDR-adjacent work or integrated wireless radios at the firmware layer
-   Maintained embedded Linux systems (custom rootfs, systemd services, power management)
-   Held a security certification or contributed to a CVE, hardware CTF, or published security research.  
    

### What you’ll do...

-   Own firmware across RTOS, embedded Linux, wireless radios, GPS, and custom embedded hardware.
-   Write and maintain system daemons and firmware modules with strict fault isolation
-   Own secure boot and verified firmware update pipelines end-to-end
-   Conduct adversarial review of firmware attack surfaces (e.g. USB, BLE, UART, OTA) and close what you find
-   Partner with RF and ML teams on high-throughput signal capture and real-time processing pipelines.
-   Build and maintain hardware validation tooling; reduce bring-up friction on every successive board spin.  
    

### How we select...

-   Short application
-   20-minute intro call
-   Technical deep-dive
-   Practical problem discussion
-   References and offer  
    

### Final facts.

Base salary up to $220,000 depending on qualifications, experience, and impact. Total compensation includes equity, premium insurance, 401(k), flexible PTO, and other individual benefits.  
  
You’ll join us on-site at our HQ in New York City with occasional domestic and global deployments.  
**Apply. Make history. Build humanity’s defense against machines.**

## Apply

[Apply at Sweep360](https://apply.workable.com/sweep360/j/89778FC5FD/apply)

---
Powered by [Workable](https://www.workable.com)