Lumilens
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In order to make an application, simply read through the following job description and make sure to attach relevant documents. This range is provided by Lumilens. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $210,000.00/yr - $250,000.00/yr Principal Firmware Engineer SAN JOSE, CA / HYBRID 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 some of the hardest challenges in optics, systems, and scale. Every line of code, every design decision, every breakthrough you help deliver—will shape the infrastructure of tomorrow. If you're looking for mission, momentum, and the chance to make an outsized impact—jump on the rocket ship. We’re just getting started. Position Overview We are seeking an experienced technical leader to join our growing team and lead development of the embedded software for our high-speed fiber optical transceiver products. This position will work closely with other transceiver engineering disciplines for requirements analysis, design, implementation, and test of embedded software for our fiber optic transceiver products. You will work with our technical teams and help us to deliver our family of optical transceiver solutions to the market. Key Responsibilities Lead software design, development and code reviews Develop high-quality C code in a real-time embedded environment Work with the cross functional teams to design, implement, & test embedded SW solutions Specify, design, implement, and test functionality and behaviors of embedded subsystems, including: Communication protocols using I2C/I3C interfaces Configuration of Microcontrollers, DSPs and Photonics components. State machines for system control, optical calibrations and data flow management. and data flow management. CMIS (Common Management Interface Specification) compliance Provide technical leadership for software developers and mentor engineers on the team Participate in hands-on hardware bring-up, troubleshooting and failure analysis Required Qualifications Bachelor’s degree in Electrical Engineering, Computer Engineering, or related field 10+ years of experience in embedded software development Strong proficiency in C and Python programming languages Experience with real-time operating systems (e.g., FreeRTOS) Experience with CMIS (Common Management Interface Specification) Ability to read and understand schematic diagrams What we offer Competitive salary commensurate with experience Comprehensive benefits package including health insurance Professional development opportunities and certification support Access to cutting-edge technology and cloud platforms Collaborative work environment with cross-functional teams Lumilens is an equal opportunity employer. All qualified applicants will receive consideration without regard to race, color, religion, gender, identity, orientation, veteran status, disability, or any other legally protected status. Seniority level
Seniority levelMid-Senior level Employment type
Employment typeFull-time Job function
IndustriesRobotics Engineering, Engineering Services, and Data Infrastructure and Analytics Referrals increase your chances of interviewing at Lumilens by 2x Inferred from the description for this job Medical insurance Vision insurance 401(k) Paid maternity leave Paid paternity leave Disability insurance Get notified about new Firmware Engineer jobs in
San Jose, CA . Mountain View, CA $125,400.00-$188,100.00 1 day ago Mountain View, CA $145,000.00-$170,000.00 17 hours ago Mountain View, CA $167,000.00-$228,000.00 2 weeks ago Software Engineer, AI Platform - New Grad Sunnyvale, CA $117,000.00-$173,000.00 2 weeks ago Software Engineer (L4), Content & Business ProductsNew Grads 2025 - General Software Engineer San Jose, CA $120,000.00-$165,000.00 5 months ago Software Engineer, AI Intern (Fall 2025) San Francisco Bay Area $57.00-$61.00 3 weeks ago Santa Clara, CA $185,000.00-$225,000.00 1 day ago New Grads 2025 - Software Engineer, Algorithm San Jose, CA $120,000.00-$165,000.00 9 months ago Mountain View, CA $120,000.00-$140,000.00 2 months ago Software Engineer (L5) - Open Connect Platform Mountain View, CA $125,000.00-$253,000.00 2 months ago Santa Clara, CA $146,307.00-$166,900.00 4 days ago Mountain View, CA $167,200.00-$250,800.00 2 weeks ago Software Engineer III, Embedded Systems/Firmware, Platforms Infrastructure Engineering Sunnyvale, CA $141,000.00-$202,000.00 2 weeks ago San Jose, CA $146,600.00-$203,100.00 1 week ago Pleasanton, CA $150,000.00-$250,000.00 1 year ago Mountain View, CA $128,000.00-$160,000.00 1 month ago Pleasanton, CA $150,000.00-$250,000.00 2 years ago Mountain View, CA $125,000.00-$188,000.00 1 week ago San Jose, CA $113,400.00-$206,300.00 3 weeks ago Mountain View, CA $167,000.00-$250,000.00 2 days ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
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In order to make an application, simply read through the following job description and make sure to attach relevant documents. This range is provided by Lumilens. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $210,000.00/yr - $250,000.00/yr Principal Firmware Engineer SAN JOSE, CA / HYBRID 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 some of the hardest challenges in optics, systems, and scale. Every line of code, every design decision, every breakthrough you help deliver—will shape the infrastructure of tomorrow. If you're looking for mission, momentum, and the chance to make an outsized impact—jump on the rocket ship. We’re just getting started. Position Overview We are seeking an experienced technical leader to join our growing team and lead development of the embedded software for our high-speed fiber optical transceiver products. This position will work closely with other transceiver engineering disciplines for requirements analysis, design, implementation, and test of embedded software for our fiber optic transceiver products. You will work with our technical teams and help us to deliver our family of optical transceiver solutions to the market. Key Responsibilities Lead software design, development and code reviews Develop high-quality C code in a real-time embedded environment Work with the cross functional teams to design, implement, & test embedded SW solutions Specify, design, implement, and test functionality and behaviors of embedded subsystems, including: Communication protocols using I2C/I3C interfaces Configuration of Microcontrollers, DSPs and Photonics components. State machines for system control, optical calibrations and data flow management. and data flow management. CMIS (Common Management Interface Specification) compliance Provide technical leadership for software developers and mentor engineers on the team Participate in hands-on hardware bring-up, troubleshooting and failure analysis Required Qualifications Bachelor’s degree in Electrical Engineering, Computer Engineering, or related field 10+ years of experience in embedded software development Strong proficiency in C and Python programming languages Experience with real-time operating systems (e.g., FreeRTOS) Experience with CMIS (Common Management Interface Specification) Ability to read and understand schematic diagrams What we offer Competitive salary commensurate with experience Comprehensive benefits package including health insurance Professional development opportunities and certification support Access to cutting-edge technology and cloud platforms Collaborative work environment with cross-functional teams Lumilens is an equal opportunity employer. All qualified applicants will receive consideration without regard to race, color, religion, gender, identity, orientation, veteran status, disability, or any other legally protected status. Seniority level
Seniority levelMid-Senior level Employment type
Employment typeFull-time Job function
IndustriesRobotics Engineering, Engineering Services, and Data Infrastructure and Analytics Referrals increase your chances of interviewing at Lumilens by 2x Inferred from the description for this job Medical insurance Vision insurance 401(k) Paid maternity leave Paid paternity leave Disability insurance Get notified about new Firmware Engineer jobs in
San Jose, CA . Mountain View, CA $125,400.00-$188,100.00 1 day ago Mountain View, CA $145,000.00-$170,000.00 17 hours ago Mountain View, CA $167,000.00-$228,000.00 2 weeks ago Software Engineer, AI Platform - New Grad Sunnyvale, CA $117,000.00-$173,000.00 2 weeks ago Software Engineer (L4), Content & Business ProductsNew Grads 2025 - General Software Engineer San Jose, CA $120,000.00-$165,000.00 5 months ago Software Engineer, AI Intern (Fall 2025) San Francisco Bay Area $57.00-$61.00 3 weeks ago Santa Clara, CA $185,000.00-$225,000.00 1 day ago New Grads 2025 - Software Engineer, Algorithm San Jose, CA $120,000.00-$165,000.00 9 months ago Mountain View, CA $120,000.00-$140,000.00 2 months ago Software Engineer (L5) - Open Connect Platform Mountain View, CA $125,000.00-$253,000.00 2 months ago Santa Clara, CA $146,307.00-$166,900.00 4 days ago Mountain View, CA $167,200.00-$250,800.00 2 weeks ago Software Engineer III, Embedded Systems/Firmware, Platforms Infrastructure Engineering Sunnyvale, CA $141,000.00-$202,000.00 2 weeks ago San Jose, CA $146,600.00-$203,100.00 1 week ago Pleasanton, CA $150,000.00-$250,000.00 1 year ago Mountain View, CA $128,000.00-$160,000.00 1 month ago Pleasanton, CA $150,000.00-$250,000.00 2 years ago Mountain View, CA $125,000.00-$188,000.00 1 week ago San Jose, CA $113,400.00-$206,300.00 3 weeks ago Mountain View, CA $167,000.00-$250,000.00 2 days ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
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