The demand for new datacenters 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 isn’t about bigger chips or more of them; it means rethinking the fundamental architecture. The industry's current path isn’t going to meet the need, so we took 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. We have also been recognized on the EE Times Silicon 100 list for several consecutive years.
Join us and shape the future of computing!
Position Overview
We are seeking a talented Firmware Engineer to join our engineering team and spearhead our embedded software development. This role focuses on low-level firmware development for our novel LLM accelerator architecture. You will develop the firmware layer that directly controls our custom hybrid optical-electronic compute hardware, ensuring reliable operation and optimal performance.
Location
Austin, TX. Full-time onsite position.
Key Responsibilities
Design and implement toolchains for our custom LLM accelerator architecture
Develop optimization strategies that bridge software algorithms to hardware implementations
Design and implement custom compiler components, including IR dialects, graph transformations, and lowering passes
Optimize computational graphs and memory access patterns for our hardware architecture
Integrate with existing ML frameworks (e.g., PyTorch, JAX, Triton).
Build and maintain test infrastructure to ensure compiler correctness and performance
Qualifications
Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, or related field
10+ years of industry experience
5+ years of professional experience leading efforts for firmware engineering, embedded systems, or low-level systems programming
Expert-level proficiency in embedded C++ (essential), Python for tooling and automation
Strong experience with embedded systems programming and hardware interfaces
Deep understanding of computer architecture, memory hierarchies, and parallel computing concepts
Experience with hardware communication protocols and register-level programming.
Preferred Skills
Master’s degree in CS/EE (or related) with expertise in high-performance, low-latency system design, including power and thermal optimization.
Deep knowledge of embedded processor architectures (ARM, RISC-V), high-speed interfaces (AXI, PCIe, AMBA), and the ability to read RTL for HW/SW co-design.
Experience building adaptive, multi-node, and multi-processor systems using bare metal, RTOS (Zephyr, FreeRTOS), and shared memory IPC.
Familiarity with LLM architectures and hands-on experience programming AI/ML accelerators (GPUs, TPUs, FPGAs).
Proficiency in virtual platforms/simulators, cross-compiler toolchains, Docker, and modern agentic AI coding workflows.
Proven ability to manage OTA update systems and debug complex parallel/asynchronous programs.
Technical Skills
Languages: Embedded C++ (essential), Python, Assembly
Bus Protocols: AXI, AMBA, PCIe, DDR, high-speed serial protocols
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
Hardware Interfaces: Register-level programming, memory-mapped I/O, DMA
Distributed Embedded: Inter-node communication, message passing, distributed state management
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: 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: RTL simulators 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
A pivotal role in an innovative startup redefining the future of AI hardware.
A collaborative and intellectually stimulating work environment.
Competitive compensation package including equity participation.
Comprehensive benefits, including health, dental, and vision insurance.
Opportunities for career growth and future team leadership.
Access to cutting-edge technology and state-of-the-art facilities.
Opportunity to publish research and contribute to the field of efficient AI inference.
This is an opportunity to work on a game-changing technology at the intersection of photonics and AI. As part of our elite team, you’ll contribute to a platform that redefines computational performance and accelerates the future of artificial intelligence. Be a key player in bringing this transformative innovation to the world.
What We OfferThis is an opportunity to play a pivotal role in an innovative startup redefining the future of AI hardware. Work on a game-changing technology at the intersection of photonics and AI as part of a collaborative and 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.
BenefitsJoin 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.
Top Skills
What We Do
Neurophos is delivering the computational power of the human brain to artificial intelligence. By leveraging decades of metamaterials research and >300 patents, we are unlocking the speed and efficiency of optical compute in an in-memory processor to increase the speed and energy efficiency of AI inference by more than 100X.
