Jobs at Lightmatter

Lead program execution for hardware systems across electrical, mechanical, and system engineering. Maintain integrated schedules, manage resource capacity and material flow, coordinate with suppliers and contract manufacturers, track budgets and risks, and serve as the primary interface between the HW Systems team and cross-functional stakeholders from design through production.

Define the microarchitecture for photonic communication and interconnect fabrics. Propose photonic device designs, estimate performance, power, and area, collaborate with photonic and analog engineering teams, and author, review, and validate architectural specifications for next-generation AI and HPC products.

Define microarchitecture for photonic communication fabrics and interconnects. Propose photonic component designs, estimate performance, power, and area, collaborate with analog and photonic engineering teams, and author, review, and validate architectural specifications for high-bandwidth, low-latency products.

Lead product definition, positioning, partnerships, customer design wins, rollouts, pricing, forecasting, and lifecycle management for silicon photonics products. The role focuses on Lightmatter’s Passage interconnect platform, evaluation systems, and photonics-enabled data center solutions, collaborating across engineering, sales, operations, finance, customers, and executives from early development through volume production and end-of-life.

Own the architecture and development of firmware test automation frameworks, hardware-in-the-loop infrastructure, CI/CD integration, diagnostics, telemetry, and test reporting for photonic hardware. Debug failures across firmware, boards, instruments, fixtures, and test software. Define test strategies, improve framework reliability, participate in design reviews, integrate embedded management interfaces, and mentor engineers. The role requires strong Python, embedded C/C++, CI/CD, hardware testing, and automation architecture experience.

Lead verification and characterization of high-speed electro-optic links across silicon and system programs. Perform lab measurements, model electrical and optical channels, own link budgets and verification methodology, and debug signal integrity issues involving eye diagrams, BER, jitter, equalization, and channel impairments. Support silicon bring-up, influence architecture decisions, develop automation tools, and mentor engineers.

Lead hardware bring-up and automated system-level testing for photonic IC products from evaluation through high-volume manufacturing. Responsibilities include ATE hardware integration, electrical bring-up, supplier debugging, test software development in Python or C/C++, power-sequence validation, protocol testing, firmware diagnostic integration, and lab instrumentation control. The role collaborates with IC design, DFT, and firmware teams to isolate silicon and board-level issues.

Drives hardware systems program execution across electrical, mechanical, and systems engineering from design through production. Owns integrated schedules, resource planning, dependencies, material flow, supplier coordination, budgets, risks, and cross-functional communication. Coordinates with contract manufacturers, PCB fabricators, assembly houses, supply chain, finance, engineering teams, and executives while establishing lightweight program management processes in a fast-changing environment.

Designs and maintains software automating photonic chip bring-up, characterization, and production testing across bench and ATE environments. Develops test methods, test flows, instrument controls, data pipelines, and hardware integrations. Collaborates with hardware, characterization, and manufacturing teams, debugs hardware/software issues, supports test releases, and mentors engineers while owning test software architecture for product lines.

Design and maintain software that automates photonic chip bring-up, characterization, validation, and production testing across laboratory and ATE environments. Develop test methods, test flows, instrument controls, data pipelines, and hardware integrations. Debug hardware-software issues, support test releases, collaborate with hardware and manufacturing teams, and mentor engineers while owning test software architecture.

Designs and maintains automated hardware test software for photonic chips across bench-top, wafer, and automated test equipment environments. Responsibilities include developing test methods and flows, controlling instruments, integrating probers and embedded systems, building data pipelines, debugging hardware/software interactions, supporting releases, and collaborating with hardware, characterization, and manufacturing teams. The role also involves test architecture ownership, mentoring engineers, and hands-on laboratory work.

Own the digital architecture of Lightmatter’s Passage photonic computing product from concept through high-volume production. Architect system-level digital designs integrating analog, mixed-signal, and photonic circuits, including DSP, FEC, CRC, stabilization, tuning, and adaptation. Collaborate with chip design, RTL, verification, firmware, test, validation, product, and applications teams. Develop specifications, validate prototypes against simulations, support hardware bring-up, and create customer-facing datasheets and reference designs.

Designs and validates end-to-end electro-optic systems for high-volume photonics products. Responsibilities include system modeling with Cadence, VPI Photonics, and Keysight ADS; co-designing silicon photonic devices; developing high-speed RF experiments; testing optical modulators and receivers; analyzing performance, power, and production requirements; and collaborating with electronics and photonics engineering teams.

Develop embedded firmware and control software for photonic transceiver lasers, including stabilization algorithms, diagnostics, telemetry, monitoring, hardware bring-up, and automated testing. Collaborate with photonic, analog, digital, and systems engineers while debugging embedded systems and integrating management interfaces such as CMIS, OpenBMC, and DMTF standards. The role requires C/C++ and Python expertise, hardware-software integration, lab testing, and ownership of production-ready firmware components.

Conduct electro-optic testing and characterization of silicon photonics chips and components, including micro-rings, phase shifters, and Mach-Zehnder interferometers. Operate optical and semiconductor test equipment, design testing protocols, and develop automated testing systems using Python. Analyze experimental data, solve complex technical problems independently, and translate findings into actionable strategies in a photonics laboratory environment.

Provides technical leadership for hardware systems developing silicon photonics-based AI accelerators and interconnect platforms. Owns multiple hardware projects from concept through production, including PCBA definition, system integration, verification, validation, documentation, and production release. Collaborates across electrical, mechanical, packaging, firmware, photonics, software, and IC engineering teams while mentoring engineers and driving technology roadmaps. Requires deep expertise in VRMs, high-speed SerDes, and major hardware interfaces.

Own end-to-end simulation, co-design, and laboratory verification of photonic-electronic links. Develop multi-physics optical and analog models, perform corner, Monte Carlo, and PVT analyses, create link budgets, and correlate simulations with silicon measurements. Partner with photonic and analog circuit teams on architecture, specifications, interface requirements, and corrective design actions. The role requires high-speed optical lab expertise, silicon photonics experience, and proficiency in photonic, mixed-signal, and Python-based simulation workflows.

Owns major enterprise customer accounts and drives the full sales cycle from engagement through deal closure. Responsibilities include developing account strategies, expanding revenue, building executive and technical relationships, positioning complex photonics and data center solutions, forecasting pipeline, leading negotiations, and coordinating cross-functional teams to deliver customer success.

The Staff Mechanical Engineer will focus on mechanical design, structural analysis, GD&T, and FEA to enhance packaging technologies for AI architectures at Lightmatter.

Lead development of the internal photonics PDK: create Python-based pcells, build and verify compact behavioral models, automate parameter extraction from FDTD/FEM solvers, correlate models with lab measurements, implement CI/regression tests, and own netlist extraction and connectivity logic for circuit-level simulation.