Firmware Engineer - Secure, High-Stakes Embedded Systems

Sweep360; New York (NY); On-site; USD 198,000 - 242,000; Full time

Benefits offered by this job

Equity

Premium insurance

401(k)

Flexible PTO

On-site headquarters in NYC

Job summary

Sweep360 in New York City is seeking a Firmware Engineer to build systems that operate in real environments and endure the realities of the field.

You’ll own firmware across RTOS, embedded Linux, wireless radios, GPS, and custom hardware, working with the hardware lead and RF/ML teams to deliver secure, resilient systems.

This is an opportunity to ship, iterate quickly, and shape the trust boundaries between hardware and software in high-stakes environments.

Qualifications

• 3–6 years writing systems-level firmware for embedded targets.
• Strong command of C with 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.
• U.S. Person status required (may involve export-controlled data).

Responsibilities

• 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.

Job description

Sweep360 in New York City is seeking a Firmware Engineer to build systems that operate in real environments and endure the realities of the field.

You’ll own firmware across RTOS, embedded Linux, wireless radios, GPS, and custom hardware, working with the hardware lead and RF/ML teams to deliver secure, resilient systems.

This is an opportunity to ship, iterate quickly, and shape the trust boundaries between hardware and software in high-stakes environments.