---
title: 'Staff Wafer-Level Testing Equipment Engineer at Lumilens'
canonical: 'https://feeny.ai/job/staff-wafer-level-testing-equipment-engineer-lumilens-singapore-2p0ya27rda60'
type: 'job'
last_seen: '2026-09-07'
---

# Staff Wafer-Level Testing Equipment Engineer at Lumilens

- **Company:** Lumilens
- **Location:** Singapore
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-09-07
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/lumilens/98d9ab73-4865-45b3-82fa-4de3cb91b50f

## Job description

## About Lumilens

At Lumilens, we are building the essential photonics infrastructure that will drive tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is ushering in a new era of computing that is faster, cooler, and dramatically more efficient. We’re a well-funded startup backed by Mayfield and led by veterans who have built and scaled some of the industry’s most transformative technologies.

## About the Role

This is a critical technical role responsible for the lifecycle management, qualification, performance, and operational excellence of wafer-level testing equipment across Lumilens’ manufacturing operations. You will serve as the equipment owner and subject matter expert for wafer probing, test handling, and associated wafer-level test equipment, driving equipment selection, installation, qualification, troubleshooting, maintenance, and continuous improvement.

The ideal candidate brings strong hands-on experience with semiconductor wafer-level testing equipment and thrives on improving equipment reliability, availability, and capability in a fast-paced manufacturing environment.

## Key Responsibilities

- Equipment Lifecycle Management: Lead the evaluation, selection, procurement, installation, qualification, and ramp-up of wafer-level testing equipment and associated infrastructure.
- Wafer-Level Test Equipment Ownership: Serve as the subject matter expert and equipment owner for wafer probers, wafer handling systems, test interfaces, probe cards, handlers, and associated test equipment and automation systems.
- Equipment Buy-off & Qualification: Develop and execute equipment qualification plans, including installation qualification, operational qualification, performance qualification, and manufacturing readiness activities.
- Equipment Uptime & Availability: Drive high equipment availability and utilization by proactively identifying equipment-related constraints and minimizing unscheduled downtime.
- Preventive & Predictive Maintenance: Establish and implement effective preventive and predictive maintenance programs to improve equipment reliability, reduce downtime to ensure consistent operational efficiency & yield, and extend equipment life.
- Equipment Capability & Optimization: Optimize equipment performance, capability, and utilization to support wafer-level testing requirements, production throughput, and manufacturing ramp.
- Equipment Process Integration: Work closely with WLT Operations/Process Engineering to ensure equipment capability and performance meet test process requirements and production specifications.
- Equipment Data & Performance Monitoring: Establish and monitor equipment performance metrics such as uptime, availability, utilization, mean time between failures (MTBF), mean time to repair (MTTR), and maintenance performance.
- Vendor & Spare Parts Management: Manage equipment vendors and OSAT suppliers for tool upgrades, retrofits, and spare parts inventory to ensure zero production line stops due to tool hardware failures.
- Cross-Functional Collaboration: Work closely with WLT Operations/Process Engineering, Quality, Industrial Engineering, Supply Chain, and external equipment suppliers to ensure successful equipment deployment and stable production execution.

## Requirements & Qualifications

- Bachelor’s degree in Mechanical Engineering, Electrical Engineering, Mechatronics, Automation Engineering, or a closely related discipline.
- Minimum 5 years of hands-on experience operating, troubleshooting, qualifying, and maintaining semiconductor wafer-level testing equipment.
- Strong understanding of wafer probing, wafer handling, test interfaces, probe cards, handlers, and automated wafer-level test systems.
- Strong experience in equipment troubleshooting, root-cause analysis, preventive maintenance, and corrective action.
- Experience with equipment performance metrics, including uptime, utilization, MTBF, MTTR, and equipment capability.
- Strong cross-functional communication and project management skills, with the ability to drive technical issues to closure across internal and external teams.
- Experience working with semiconductor wafer fabs, OSATs, wafer-level test houses, equipment suppliers, or other external manufacturing partners is highly preferred.
- Experience in photonics, silicon photonics, optical testing, or advanced semiconductor packaging is a strong advantage.

## Benefits

- Competitive salary and benefits
- Opportunities for career advancement
- Work with a world-class team solving cutting-edge challenges
- Collaborative and innovative work environment

Lumilens is committed to building a diverse and inclusive workplace. We are proud to be an equal opportunity employer.

## About Lumilens

## Company Overview
- **One-liner**: Lumilens designs and manufactures next-generation photonic interconnects to massively scale AI compute infrastructure.
- **Entity Type**: Private (Series B – led by Accton Technology; prior Series A of $30M from Mayfield and Spark Capital)
- **Headquarters**: San Jose, California, USA
- **Founded**: 2024
- **Founders**: Ankur Singla (CEO), Samuel Liu (VP Products), Ritesh Kapahi (VP/GM India), Dave Friedman (VP Operations)

## Core Business
- **Primary industry**: Photonics / optical interconnects for AI data centers
- **Target customers**: Large-scale AI providers and hyperscale data center operators (B2B, Enterprise)
- **Mission**: “To rapidly innovate in photonics and connectivity architectures to enable the massive scaling of compute infrastructure required to deliver the full potential of AI.”

## Products & Services
- **Photonic Interconnects (Scale-Out & Scale-Up)**: High-density, low-latency optical links that enable cluster-to-cluster and direct GPU-to-GPU connectivity. Supports 100x higher quantity of GPU direct connections than legacy approaches.
  - *Type*: Hardware (silicon photonics modules) + integrated manufacturing
- **Automated Manufacturing Platform**: End-to-end custom robotics and AI-optimized production processes to maximize yield, quality, and supply-chain flexibility.
  - *Type*: Service / Manufacturing capability (in-house)

## Market Standing
- **Valuation/Market Cap**: Not publicly available
- **Key Metric**: Total funding – $30M Series A (June 2024); Series B led by Accton Technology (amount undisclosed)
- **Notable Investors/Partners**: Mayfield, Spark Capital, Accton Technology
- **Growth Signals**:
  - Headcount grew 287% YoY (54 employees as of mid-2025) [linkedin.com]
  - Operations in 8 countries: USA, India, Thailand, Poland, Singapore, Czechia, South Korea, Malaysia
  - 48 active job postings (+23.1% monthly growth) [linkedin.com]
  - Leadership team with deep photonics/networking experience from Cisco, Juniper, Meta, Lumentum, Coherent

## Competitive Advantages
- **In-house silicon photonics development** – full control over design and supply chain
- **Systems-level expertise** – can partner on both scale-out and scale-up architectures
- **Manufacturing automation** – robotics + AI processes enable faster innovation, higher quality, and predictable deployment
- **Standards-based interconnects** – easy deployment into existing infrastructure
- **Manufacturing anywhere** – supply-chain continuity and scalable manufacturing

## Strategic Focus
- Enable massive scaling of AI infrastructure by overcoming electrical/copper limitations with advanced photonics
- Disaggregate GPUs to mitigate power and density challenges in data centers
- Expand manufacturing capacity globally and continue to automate production
- Align product roadmap with industry standards to accelerate adoption

## Why Work Here
- **Culture**: Fast-paced startup environment with deep technical expertise; mission-driven focus on enabling the future of AI
- **Work policy**: In-office (HQ San Jose, CA with Bengaluru, India as major hub) [builtin.com]
- **Perks**: Opportunity to work on cutting-edge photonics, robotics, and AI manufacturing; direct impact on world’s largest AI infrastructure
- **Engineering culture**: Heavy emphasis on silicon photonics, hardware design, robotics automation, and system-level architecture. Teams are led by veterans from Cisco, Juniper, Meta, Lumentum, Coherent.

## Sources
1. [lumilens.com](https://lumilens.com/) – Company overview, mission, leadership, products
2. [lumilens.com/company](https://lumilens.com/company) – Vision, investors, leadership team
3. [builtin.com](https://builtin.com/company/lumilens) – Career page, employee count, year founded, office policy
4. [linkedin.com](https://www.linkedin.com/company/lumilens) – Headcount, funding details, geographic/department breakdown, job trends, talent sources
5. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/lumilens) – Current job openings (48 listings)

## Other roles at Lumilens

- [Sourcing Manager (Foundry & OSAT)](https://feeny.ai/job/sourcing-manager-foundry-osat-lumilens-singapore-26re9q580khj) — Singapore
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- [Staff Wafer-level Testing Engineer (Operations & Process)](https://feeny.ai/job/staff-wafer-level-testing-engineer-operations-process-lumilens-singapore-cvp2fdz9w4qr) — Singapore
- [Optical Transceiver Product Engineer](https://feeny.ai/job/optical-transceiver-product-engineer-lumilens-thailand-f5tgy64vcaxr) — Thailand
- [Product Quality Engineer](https://feeny.ai/job/product-quality-engineer-lumilens-chon-buri-45vb6wx9tam7) — Chon Buri, Thailand
- [Analog Layout Lead](https://feeny.ai/job/analog-layout-lead-lumilens-san-jose-5fmv4e96vhpt) — San Jose, CA
- [IT Specialist](https://feeny.ai/job/it-specialist-lumilens-bengaluru-c85avweewvq3) — Bengaluru, India
- [IT Specialist Intern](https://feeny.ai/job/it-specialist-intern-lumilens-san-jose-psmknddggbz7) — San Jose, CA
- [Senior Staff Software Engineer, Data](https://feeny.ai/job/senior-staff-software-engineer-data-lumilens-san-jose-mxja907kewxx) — San Jose, CA
- [Director Product Line Management (Co Packaging Optical Solution)](https://feeny.ai/job/director-product-line-management-co-packaging-optical-solution-lumilens-san-jose-7mv3d8xfdg84) — San Jose, CA