Senior Embedded Firmware Engineer

Bengaluru, India💼 Full-time🗓 2026-06-17 → 2026-09-26

Core

Design, develop, and debug embedded firmware for high-performance networking and optical semiconductor products, including device drivers and RTOS integration.

Role type

Senior Embedded Firmware Engineer (Networking/Optical Semiconductors)

Builds

High-performance networking and optical semiconductor products

Domain

Networking and Optical Semiconductors

Deliverable

production ML models | product features

Required skills

C programming, RTOS integration, device driver development, communication protocols (SPI, I2C, UART, Ethernet), ARM architecture development, build environment management, DSP concepts

Preferred skills

Optical technology background, networking industry experience

Technologies

ARM, C, RTOS, SPI, I2C, UART, Ethernet, Makefiles

Responsibilities

Drive firmware design and feature delivery for networking/optical products; Develop and maintain device drivers and RTOS integration; Design, code, test, and debug embedded firmware for ARM-based controllers; Collaborate with hardware, DSP, and software teams; Manage and optimize build environments; Contribute to design reviews and product delivery schedules

Seniority

Senior, hands-on IC

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About Lumilens

At Lumilens we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing faster, cooler, and massively more efficient.We’re a well-funded startup backed by Mayfield and led by veterans who’ve built and scaled some of the most transformative technologies in the industry. This isn’t incremental innovation, it’s a ground-floor opportunity to rethink the optical layer from the silicon up. You’ll work alongside a team of world-class engineers solving