[美商] Senior Firmware Engineer (Optical Transceiver)

Keywords: Optical, Firmware A leading global technology organisation is seeking a Senior Firmware Engineer to drive the architecture, development, integration, and verification of embedded firmware for mid-board optical transceivers.

What you'll do:

• Architect and implement embedded firmware for optical transceiver control systems using MCU-based designs and active control loops in a predominantly bare metal environment.
• Lead the development of low-level drivers for interfaces such as I²C/MDIO, ADC/DAC, GPIO, PMIC, SPI, UART, as well as thermal and laser control systems.
• Design and implement SFF/CMIS-compliant state machines and memory maps tailored for optical transceiver modules to ensure standards compliance.
• Develop sophisticated algorithms for module startup sequencing, fault management, chipset interaction, and closed-loop optical power or temperature control.
• Ensure safe and deterministic firmware behaviour across all module states including initialisation, low-power operation, high-power modes, diagnostics, firmware updates, and more.
• Collaborate closely with hardware, software, optics, electrical, mechanical, and process teams to optimise design for manufacture (DFM) and test (DFT), validating end-to-end module behaviour.
• Own debugging of complex system-level issues such as thermal runaway protection mechanisms, laser bias tuning procedures, signal integrity interactions, PMD or chipset state anomalies.
• Support the initial bring-up of integrated modules as well as ongoing support throughout the product life cycle to ensure reliability and performance.
• Lead root-cause analysis efforts for firmware-related field returns or customer-reported issues to drive continuous improvement.
• Assist with characterisation of new and existing hardware components to enhance product capabilities.
• Develop engineering tools using C# and Python for manufacturing processes and sales support activities.
• Maintain revision control systems, documentation standards, and processes governing firmware release flows.
• Participate actively in design reviews, customer calls, failure analysis sessions, and interoperability testing initiatives.

What you bring:

• Over five years of embedded firmware experience ideally within optical transceivers or high-speed communications products demonstrating deep technical proficiency.
• Advanced skills in C programming language complemented by knowledge or experience in C# development as well as embedded systems running RTOS environments.
• Ability to design maintainable state machines along with drivers and hardware-firmware abstractions that facilitate modularity and scalability.
• Expertise in debugging techniques utilising logic analysers, I²C/MDIO sniffers, oscilloscopes, JTAG interfaces to resolve complex hardware-software interactions.
• Familiarity with automated testing frameworks coupled with scripting abilities in Python for lab bench workflows enhancing productivity.
• Comprehensive understanding of optical transceiver architectures including product design schematics plus CMIS/SFF-8636/MDIO/I²C protocols alongside low-level hardware interfaces.
• Experience with laser control technologies (VCSEL/DFB/EML), TEC or thermal management systems as well as power sequencing methodologies relevant to optical modules.
• Knowledge of signal integrity fundamentals combined with awareness of high-speed link behaviour essential for reliable communications.
• Proven ability to collaborate effectively with cross-disciplinary teams while interfacing professionally with customers when required fostering trustful relationships.
• Excellent documentation habits paired with an ownership mindset ensuring thoroughness in revision control processes for firmware releases.
• Comfortable working within fast-paced NPI environments characterised by tight schedules requiring adaptability without compromising quality outcomes.
• Experience in ASICs/SoCs/FPGAs/Switch ICs/DSP control/integration considered advantageous but not mandatory.

What sets this company apart:

This organisation stands out through its unwavering commitment to fostering an inclusive workplace culture where collaboration is encouraged at every level. Employees benefit from flexible working arrangements designed to accommodate individual needs while promoting work-life balance.

What's next:

If you are ready to advance your career by joining a collaborative team dedicated to pushing boundaries in optical transceiver technology—apply now!

Apply today by clicking on the link provided.