Optical Firmware Engineer, Principal at Astera Labs

<div class="content-intro"><p><span data-teams="true">Astera Labs (NASDAQ: ALAB) provides rack-scale AI infrastructure through purpose-built connectivity solutions. By collaborating with hyperscalers and ecosystem partners, Astera Labs enables organizations to unlock the full potential of modern AI. Astera Labs’ Intelligent Connectivity Platform integrates CXL®, Ethernet, NVLink, PCIe®, and UALink™ semiconductor-based technologies with the company’s COSMOS software suite to unify diverse components into cohesive, flexible systems that deliver end-to-end scale-up, and scale-out connectivity. The company’s custom connectivity solutions business complements its standards-based portfolio, enabling customers to deploy tailored architectures to meet their unique infrastructure requirements. Discover more at <a id="menurhut" class="fui-Link ___1q1shib f2hkw1w f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1s184ao f1mk8lai fnbmjn9 f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh fhgqx19 f1olyrje f1p93eir f1nev41a f1h8hb77 f1lqvz6u f10aw75t fsle3fq f17ae5zn" href="http://www.asteralabs.com/" target="_blank">www.asteralabs.com</a>.</span></p></div><div class="x_elementToProof"> <p>We are seeking to hire an Optical Firmware Engineer, Principal develop, optimize, and maintain embedded firmware for optical engines, photonic integrated circuits (PICs) optical modules. This includes control of lasers, modulators, photodetectors, thermal management, calibration, and high-speed link optimization in silicon photonics systems. The role sits at the intersection of embedded systems, photonics, and hardware.</p> <p><strong>Key Responsibilities:</strong></p> <ul> <li>Design, develop, and debug real-time firmware for optical transceivers or PIC/EIC engines (e.g., in C/C++ for microcontrollers or embedded processors).</li> <li>Implement algorithms for laser control, automatic power control (APC), temperature compensation, wavelength locking, and link training/adaptation.</li> <li>Integrate firmware with hardware (DSP, drivers, ADCs/DACs) and higher-level software (e.g., via I2C, SPI, or custom interfaces).</li> <li>Develop diagnostic, calibration, and telemetry features for manufacturing test, field monitoring, and reliability.</li> <li>Optimize for low latency, power efficiency, and high reliability in high-speed (400G/800G/1.6T+) optical links.</li> <li>Collaborate with optical, electrical, DSP, and system validation teams to characterize and tune performance.</li> <li>Support bring-up, debugging, and qualification of silicon photonics prototypes.</li> <li>Handle firmware updates, version control, and compliance with standards (e.g., OIF, CMIS).</li> </ul> <p><strong>Required Qualifications:</strong></p> <ul> <li>BS/MS/PhD in Electrical Engineering, Computer Engineering, Physics, or related field + 12+ years of industry experience.</li> <li>Strong experience in embedded firmware development (bare-metal or RTOS) for optical or high-speed communication systems.</li> <li>Knowledge of photonics concepts: lasers, modulators, photodiodes, TIA, thermal tuning.</li> <li>Proficiency in C/C++, Python (for scripting/tools), and debugging tools (JTAG, oscilloscopes, optical test equipment).</li> <li>Experience with high-speed SerDes, signal integrity, or optical link optimization is a plus.</li> <li>Familiarity with silicon photonics, or pluggable optics (QSFP, OSFP) is highly valued.</li> </ul> <p>&nbsp;</p> </div><div class="content-conclusion"><p>We know that creativity and innovation happen more often when teams include diverse ideas, backgrounds, and experiences, and we actively encourage everyone with relevant experience to apply, including people of color, LGBTQ+ and non-binary people, veterans, parents, and individuals with disabilities.</p></div>