Jobs | Devgigs

Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world’s first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.

Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!

If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.

Lightmatter is (re)inventing the future of computing with light!

At Lightmatter, an SDET is a software engineer first , not a QA coordinator or manual tester. You'll design and build the frameworks, harnesses, and hardware-in-the-loop infrastructure that let firmware engineers test their own code continuously on real photonic hardware. You'll sit with the firmware team, spend time at the bench with oscilloscopes, debuggers, and optical instruments, and serve as the bridge between firmware and broader software and systems organizations.

Responsibilities

Own the architecture and roadmap of the firmware test automation framework across products, targets, sites, and teams
Design and build stable automation for new firmware features and hardware, held to production-quality engineering standards
Build and operate HIL test infrastructure: bench and rack fixtures, device farms, power/reset control, instrument integration, and CI orchestration on real photonic hardware
Define test strategy, plans, and reporting; lead test plan reviews across teams
Integrate firmware testing into CI/CD so every change is built, flashed, exercised on hardware, and reported automatically
Own framework reliability and flaky test metrics as first-class engineering problems
Build results, telemetry, and log pipelines for triage, trend analysis, and release decisions
Debug failures across the full stack (firmware, board, instrument, fixture, test code) and partner with engineers to resolve them
Participate in firmware design reviews to influence testability and diagnostics early
Integrate with data center management interfaces (CMIS, OpenBMC, DMTF); debug embedded systems using GDB, JTAG, and logic analyzers
Define diagnostics and monitoring architecture for photonic transceivers

Sr SDET– Firmware Automation

2027 Summer Intern, PhD, Software Engineer, Simulation

Electro-Optic Link Hardware Engineer

Staff Hardware Test & Bring-Up Engineer

System Safety Engineer, Strategic Programs & Integration

2027 Summer Intern, MS/PhD, Software Engineer

2027 Summer Intern, PhD, Perception/Road Understanding, ML Engineer

Staff Tech Lead, ML Data Infrastructure and Inference Platform

Product Quality Engineer, Vehicle Systems

2027 Summer Intern, PhD, Data Science

Staff Computer Vision Engineer - Search AI Product Engineering

Research Scientist, World Model Post-Training

2027 Summer Intern, MS/PhD, Software/ML Engineer, Simulation

2027 Summer Intern, MS/PhD, Software Engineer, Simulation Evaluation ML Model

Staff Autonomy Software Engineer, Localization

Thermal Engineer, Thermal Protection Systems (TPS)

Senior Thermal Engineer, Expeditionary AI / HPC Data Centers

Staff Tech Lead Software Engineer, Vehicle Realism Platform

Program Manager, Regulatory Reporting

Marketplace Platform, TLM

Sr SDET– Firmware Automation

Extracted from the posting

TL;DR

The full posting

Benefits