Chain Reaction designs and builds hardware that fuels advanced privacy technologies by accelerating compute performance. Our world-class teams are transforming the future of data, creating the infrastructure that will power the next generation of secure cloud computing. The main bottleneck in scaling cutting-edge solutions in privacy tech, data-analysis and real-time computing is acceleration – existing hardware cannot keep up with data processing needs. Chain Reaction’s products reshape how data is processed and used on a global scale, and we’re looking for the brightest people to join us. We are looking for talented and ambitious individuals to join our software team.

As a Senior Embedded Firmware Engineer, you will be the technical lead responsible for defining, implementing, and optimizing the embedded firmware that drives our ASIC. You will work closely with ASIC architects, hardware design teams, and software engineers to ensure a seamless and high-performance integration between silicon and system software.

Responsibilities

• Own the HW/SW interface design for our Fully Homomorphic Encryption (FHE) ASIC, including low-level driver architecture.
• Develop firmware from scratch, including boot code, device drivers, and control logic.
• Collaborate with hardware and ASIC teams to define register maps, control protocols, and data paths.
• Perform bring-up, debugging, and validation on prototype boards and silicon samples.
• Optimize firmware for performance, reliability, and power efficiency.
• Write technical documentation for firmware architecture, APIs, and hardware interface specifications.
• Mentor junior engineers and contribute to best practices in embedded development.
  
  

Requirements:

• B.Sc. or M.Sc. in Electrical Engineering, Computer Engineering, Computer Science, or related field.
• 7+ years of embedded firmware development for complex hardware systems.
• Proven experience working in ASIC companies or on ASIC-related projects (bring-up, validation, firmware for custom silicon).
• Strong C/C++ programming skills with experience in low-level, performance-critical code.
• Solid understanding of SoC architecture, memory-mapped I/O, interrupts, and DMA.
• Hands-on experience with embedded Linux, including Yocto or Buildroot build systems.
• Hands-on Layer-2 Ethernet experience, including MAC/PHY bring-up, VLAN handling, and low-level packet processing.
• Proven track record of hardware bring-up and debugging at the register level.
• Excellent problem-solving skills and ability to work cross-functionally with hardware and software teams.
  
  

Preferred

• Low-level firmware development for RISC-V or ARM, including boot code, interrupt handling, and peripheral drivers
• Knowledge of RDMA, InfiniBand, or RoCE protocols.
• Background in cryptography, security hardware, or FHE concepts.
• Exposure to ASIC or FPGA verification environments.