Founding Fabrication Engineer

Samson Rose; Los Angeles (CA); Hybrid; USD 150,000 - 230,000; Full time

Job summary

Samson Rose is seeking a Founding Fab Engineer in Los Angeles to build and lead our nanofabrication capability. You will own the process flow, equipment base, and facility, starting with external partners and progressing to in-house, production-scale manufacturing. Equity and strategic scope accompany this pivotal early role.

The role reports to the CEO and will recruit a small senior team as the fabrication capability matures, shaping the company's long-term roadmap in photonics manufacturing.

Qualifications

• Owns a nanofabrication process flow from wafer to device and failure modes.
• Dry-etch expertise with ICP‑RIE for device performance.
• Process-level EBL experience including exposure strategy and corrections.
• Experience installing/maintaining fabrication equipment.
• Metrology across SEM, profilometry, and optical inspection.
• Must be a U.S. person per ITAR requirements.

Responsibilities

• Establish and scale the fabrication capability and in-house lab.
• Manage external foundries while transitioning steps in-house.
• Recruit, develop, and lead the fabrication team.

Skills

Nanofabrication

ICP-RIE

Electron-beam lithography

Metrology

Equipment installation/maintenance

US person (ITAR)

Education

Bachelor's degree or higher in EE/Materials/Applied Physics/CE or related field

Tools

ICP-RIE etcher

FE-SEM with pattern generator

Nanoimprint equipment

Job description

About the Company

This company is building the merchant manufacturing layer for the photonics industry. Its initial products are chip-based LiDAR seekers for counter-UAS and precision-guided munitions, built around optical metasurfaces. The roadmap extends through photonic gyroscopes and complete guidance modules toward a merchant photonics foundry serving the defense, data center, and space markets. The company is venture-backed and is establishing its engineering and fabrication operations in the Los Angeles area.

About the Role

The company is seeking a Founding Fab Engineer to establish and lead its nanofabrication capability. This position is responsible for building that capability from its foundation: bringing an optical metasurface process in-house in deliberate stages, commissioning the associated equipment, and scaling toward volume production, while maintaining continuity of supply through external foundries throughout the transition.

Reporting directly to the CEO, the Founding Fab Engineer holds end-to-end ownership of the process flow, the equipment base, and the fabrication facility. The role begins with the management of external fabrication partners and the establishment of in-house preparation and metrology, progresses to bringing the highest-variability process steps in-house, and ultimately defines the path to volume manufacturing. As the fabrication organization matures, the Founding Fab Engineer will recruit and lead the team responsible for it. This is among the most consequential early technical appointments at the company and carries corresponding scope, autonomy, and equity.

Key Responsibilities:

Establish and Scale the Fabrication Capability

• Maintain and optimize the metasurface process through external foundry partnerships while establishing an in-house preparation and metrology laboratory, qualifying and managing procured pre-coated film wafers, and retaining ownership of the complete process flow where individual steps are outsourced
• Transition the highest-variability process steps in-house, including the installation, qualification, and operation of an ICP-RIE etcher and a field-emission scanning electron microscope retrofitted with a pattern generator for small-field electron-beam lithography, and drive these tools to production-grade repeatability
• Assess the case for dedicated electron-beam lithography capability, and define and execute the path to volume production, including electron-beam-written nanoimprint master origination and transition to a nanoimprint foundry at scale

Own Process, Equipment, and Facility

• Maintain process documentation, characterization, and yield across all stages of fabrication
• Lead capital equipment procurement and vendor management, including sourcing, technical evaluation, negotiation, and installation logistics for both new and pre-owned tools
• Oversee the fabrication facility, including cleanroom operations, gas and chemical handling, and the mitigation of environmental risks to sensitive equipment prior to installation
• Recruit, develop, and lead the fabrication team as the capability matures

Required Qualifications

• Bachelor's degree or higher in Electrical Engineering, Materials Science, Applied Physics, Chemical Engineering, or a related discipline, or equivalent demonstrated experience
• Demonstrated ownership of a nanofabrication process flow, including the development and qualification of a process rather than the execution of predefined recipes, with the ability to detail a specific device carried from bare wafer to functioning part and the failure modes addressed in the process
• Substantial dry-etch expertise, specifically ICP-RIE, which represents the process step most critical to device performance
• Process-level electron-beam lithography experience, including exposure strategy, proximity correction, resist stack selection, and write-time and field-size tradeoffs
• Direct experience installing, qualifying, and maintaining fabrication equipment, preferably pre-owned or transferred tools within a lightly staffed environment
• Metrology proficiency across scanning electron microscopy, profilometry, and optical inspection, with the judgment to distinguish valid measurements from artifacts
• Must be a U.S. person (citizen or lawful permanent resident) in accordance with ITAR requirements

Preferred Qualifications

• Direct experience fabricating optical metasurfaces or diffractive and nanophotonic devices, preferably at or near 1550 nm
• Nanoimprint lithography experience, including master origination and imprint fidelity, consistent with the volume production path
• Experience establishing or substantially expanding a fabrication or process line with a small team and a constrained capital budget, as distinct from operating within a large institutional cleanroom
• Compound semiconductor or silicon photonics process background, including film deposition (evaporation, sputtering, or atomic layer deposition) and thin-film qualification
• Experience procuring capital equipment, including negotiation with pre-owned-tool brokers and service vendors and the management of installation logistics
• Working knowledge of cleanroom classification and of the vibration and electromagnetic-interference sensitivities of scanning electron microscopy and lithography equipment

Why Join

The Founding Fab Engineer will establish a nanofabrication capability from its foundation and own it in full, defining the process that underpins the entire company roadmap. The role works directly with the founder and a small team of senior engineers and physicists with decades of combined experience in defense photonics, and will determine the pace at which the company transitions from external foundries to a fabrication base of its own. Few positions offer this degree of technical ownership at this stage of a company's growth.