Firmware Engineer

About Neurophos

The demand for new data centers and AI compute is rapidly outpacing the planet's energy capacity. Digital solutions are hitting a power wall as we approach the physical limits of traditional silicon. Conquering this bottleneck means rethinking the fundamental architecture of inference compute. The industry's current path can't meet the need, so we're taking a different approach.

Instead of traditional electronic circuits, we use silicon photonics and an active, programmable metasurface to perform matrix multiplications at the speed of light. Our optical cells are 10,000x smaller than traditional photonic components, enabling unprecedented density. By using photonics instead of electricity, our chips become more efficient as they scale. This architecture will deliver up to 100 times the energy efficiency of existing solutions while significantly improving performance for large-scale AI inference.

We’ve assembled a world-class team of industry veterans and recently raised a $110M Series A led by Gates Frontier. Participants include M12 (Microsoft’s Venture Fund), Carbon Direct Capital, Aramco Ventures, Bosch Ventures, Tectonic Ventures, Space Capital, and others.

Join us and shape the future of computing!

Position Overview

We are seeking a talented Firmware Engineer to join our engineering team. This role is focused on low-level firmware development for our novel LLM accelerator architecture. You will develop code for the firmware layer that directly controls our custom hybrid optical-electronic compute hardware, ensuring reliable operation and optimal performance.

Location

Austin, TX

Key Responsibilities

Firmware Development:

Contributing to low-level firmware to orchestrate execution of LLM workloads across hardware accelerator components

Contributing to system and board management of such a system

Create debugging and profiling tools for firmware and hardware interaction

System Integration:

Collaborate with hardware engineers to define software-hardware interfaces

Optimize end-to-end performance from application layer to hardware execution

Develop comprehensive testing and validation frameworks

Create documentation and specifications for firmware interfaces

Support customer integration and provide technical guidance

Qualifications

Education: Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, or related field

Experience: 3–5 years of professional experience in firmware engineering, embedded systems, or low-level systems programming

Programming: High proficiency in embedded C++ (essential), Python for tooling and automation

Embedded Systems: Experience with embedded systems programming and hardware interfaces

Systems Knowledge: Familiarity with computer architecture, memory hierarchies, and parallel computing concepts

Hardware Interfaces: Experience with hardware communication protocols and register-level programming

Preferred Skills

Education: Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or related field

Bus Protocols: Experience with lower speed peripheral busses (I2C/SPI/UART/CAN/LIN), Some experience with PCIe interfaces. Some experience with Ethernet interfaces.

Embedded Processors: Experience with embedded processor architectures (ARM, RISC-V, or similar) and associated toolchains (strongly preferred)

Virtual Platforms: Experience with early firmware development on virtual platforms and/or fast C simulators (preferred)

Cross-Compilation: Hands-on experience with cross-compiler toolchains (preferred)

Containerization: Experience with Docker containers for development and delivery (preferred)

Parallel Debugging: Experience debugging parallel and asynchronous programs (strongly preferred)

Real-Time Systems: Experience with bare metal programming and RTOS (FreeRTOS, Zephyr, or similar) (preferred)

AI-Assisted Development: Experience with structured, human-supervised AI/agentic coding workflows (preferred)

Multi-Node Systems: Experience with multi-node embedded systems, including inter-node communication and coordination (strongly preferred)

Multi-Processor Systems: Experience with multi-processor systems, including IPC and shared memory coordination (preferred)

Adaptive Firmware: Experience designing adaptive and retargetable firmware architectures (preferred)

OTA Updates: Experience with over-the-air update systems for embedded devices (preferred)

RTL Familiarity: Ability to read and understand RTL code for debugging and hardware-software co-design

ML Hardware: Experience with AI/ML accelerators (GPUs, TPUs, FPGAs) and their programming models

Performance Optimization: Experience with high-performance computing and low-latency system design

Thermal/Power Management: Experience with thermal management and power optimization in embedded systems

LLM Knowledge: Familiarity with Large Language Model architectures and their computational requirements (preferred)

High Speed Protocols: Some familiarity or understand of AMBA, AXI, PCIe, on processors and ROCv1/2, Infiniband over networks

Technical Skills

Programming Languages: Embedded C++ (essential), Python, Assembly

Bus Protocols: I2C, SPI, UART, or low-speed serial protocols. Ethernet familiarity.

Embedded Processors: ARM Cortex-M/A, RISC-V, or similar; associated toolchains and debugging

Embedded Platforms: Bare metal programming, FreeRTOS, Zephyr, or similar RTOS

RTL & Verification: Verilog/SystemVerilog (reading comprehension), ModelSim, Questasim, or similar simulation tools (nice to have)

Hardware Interfaces: Register-level programming, memory-mapped I/O.

Driver Methodologies: Polling, Interrupt and DMA based hardware interactions

Distributed Embedded: Inter-node communication, message passing, distributed state management (nice to have)

Testing & QA: Unit testing frameworks, hardware-in-the-loop testing, integration testing

CI/CD: Jenkins, GitHub Actions, GitLab CI, or similar systems

Development Tools: CMake, Git, Docker

Debugging Tools: GDB, JTAG debuggers, logic analyzers, oscilloscopes, hardware protocol analyzers

Operating Systems: Posix/Linux (user-space tooling), embedded RTOS internals

Technical Environment

Languages: Embedded C++ (primary), Python for tooling, Assembly for low-level optimization

Hardware Tools: JTAG debuggers, logic analyzers, oscilloscopes, protocol analyzers

Simulation: Simulators/Emulators for hardware-software co-verification

Testing: Hardware-in-the-loop testing, automated regression suites, CI pipelines

Focus Areas: Firmware development, HAL implementation, hardware-software co-design

What We Offer

This is an opportunity to play a pivotal role in an innovative startup redefining the future of AI hardware. Work on game-changing technology at the intersection of photonics and AI as part of a collaborative, brilliant team. You’ll contribute to a platform that redefines computational performance and accelerates the future of artificial intelligence. Come help us bring this transformative technology to the world.

Benefits

Join a team that invests in your future and your well-being. At Neurophos, we offer:

100% coverage of base health plan premiums for you and your dependents, plus HSA contributions.

Unlimited PTO. No rigid vacation banks, just a focus on delivery.

401(k) matching and stock option opportunities to ensure our success is your success.

Full suite of voluntary benefits, including Dental, Vision, Life, Hospital, Critical Illness, and Accident insurance.

Personalized Benefits. Choose the plans that fit your life and take the cash back for those that don’t.

Compensation Range: $125K - $150K