Sr. Process Engineer

Responsibilities

• Drive process development for novel III-V etching, coating, and related semiconductor fabrication modules in support of Lumilens’ advanced photonics platform.
• Translate product and device requirements into clear process requirements, specifications, control plans, and acceptance criteria.
• Define process tooling needs, including equipment capability, process windows, fixturing, materials, and vendor requirements.
• Design, execute, and manage DOE’s to optimize etch profiles, coating performance, process repeatability, yield, and manufacturability.
• Define metrology requirements, measurement methods, inspection strategy, and outsourcing approach for process development and qualification.
• Evaluate and select tooling, vendors, and external partners based on technical capability, commercial considerations, scalability, and long-term process ownership.
• Institutionalize new tools and processes through documentation, process flows, work instructions, engineering reports, and training materials.
• Support assessment of silicon photonics processing flows, including process compatibility, integration risks, yield-limiting factors, and opportunities for improvement.
• Collaborate with device, photonics, packaging, manufacturing, and external fab partners to troubleshoot process issues and drive corrective actions.

Requirements

• Senior-level experience in semiconductor process engineering, process development, or process integration, ideally with III-V materials, silicon photonics, compound semiconductors, or photonic devices.
• Hands-on experience with wet or dry etching, coating, thin films, deposition, lithography, metrology, or related cleanroom fabrication processes.
• Strong working knowledge of DOE design, process characterization, statistical analysis, capability studies, and data-driven process optimization.
• Experience defining metrology methods and working with internal or outsourced metrology resources such as SEM, profilometry, ellipsometry, optical inspection, or similar techniques.
• Demonstrated ability to evaluate, select, and qualify tooling based on process performance, vendor capability, cost, schedule, serviceability, and scalability.
• Experience documenting and institutionalizing new processes, including process flows, recipes, work instructions, qualification reports, and lessons learned.
• Familiarity with silicon photonics processing, heterogeneous integration, or III-V to SiPh process interfaces is highly valuable.
• Strong problem-solving, communication, and cross-functional collaboration skills in a fast-paced development environment.

Qualifications

• Advanced degree in Electrical Engineering, Materials Science, Physics, or a related field.
• Minimum 5 years of relevant experience in semiconductor process engineering or related fields.
• Experience with III-V materials, silicon photonics, compound semiconductors, or photonic devices.
• Hands-on experience with wet or dry etching, coating, thin films, deposition, lithography, metrology, or related cleanroom fabrication processes.
• Strong understanding of process characterization, DOE design, statistical analysis, and metrology methods.
• Experience defining process requirements from product requirements and translating technical needs into executable process flows, specifications, and control plans.
• Ability to evaluate, select, and qualify tooling based on process performance, vendor capability, cost, schedule, serviceability, and scalability.
• Experience documenting and institutionalizing new processes, including process flows, recipes, work instructions, qualification reports, and lessons learned.
• Familiarity with silicon photonics processing, heterogeneous integration, or III-V to SiPh process interfaces is highly valuable.
• Strong problem-solving, communication, and cross-functional collaboration skills in a fast-paced development environment.

Skills

• Process Development
• Process Integration
• III-V Materials
• Photonic Devices
• Wet Etching
• Dry Etching
• Coating
• Thin Films
• Deposition
• Lithography
• Metrology
• SEM
• Profilometry
• Ellipsometry
• Optical Inspection
• DOE Design
• Statistical Analysis
• Capability Studies
• Data-Driven Process Optimization
• Tool Evaluation
• Vendor Selection
• Process Documentation
• Training Materials
• Process Flow Development
• Recipe Creation
• Work Instructions
• Qualification Reports
• Lessons Learned
• Silicon Photonics Processing
• Heterogeneous Integration
• III-V to SiPh Process Interfaces

Benefits

• Competitive salary commensurate with experience
• Comprehensive benefits package including health insurance
• Professional development opportunities and certification support
• Access to cutting-edge photonics and advanced manufacturing technologies
• Collaborative work environment with cross-functional teams solving complex challenges

Pay

• Salary commensurate with experience

Schedule

• Full-time

Company Information

Lumilens is a well-funded startup backed by Mayfield and led by veterans who've built and scaled some of the most transformative technologies in the industry. This isn't incremental innovation, it's a ground-floor opportunity to rethink the optical layer from the silicon up. You'll work alongside a team of world-class engineers solving some of the hardest challenges in optics, systems, and scale. Every decision you make will directly influence how we build, source, and deliver the infrastructure of tomorrow. If you're looking for mission, momentum, and the chance to make an outsized impact, jump on the rocket ship. We’re just getting started. Lumilens is an equal opportunity employer. All qualified applicants will receive consideration without regard to race, color, religion, gender, identity, orientation, veteran status, disability, or any other legally protected status.