---
title: 'Staff Optical Manufacturing Test Engineer - Hardware Automation at Lumilens'
canonical: 'https://feeny.ai/job/staff-optical-manufacturing-test-engineer-hardware-automation-lumilens-singapore-51qrkg10850n'
type: 'job'
last_seen: '2026-10-19'
---

# Staff Optical Manufacturing Test Engineer - Hardware Automation at Lumilens

- **Company:** Lumilens
- **Location:** Singapore
- **Employment:** full-time
- **Posted:** 2026-10-02
- **Last confirmed live:** 2026-10-19
- **Apply:** https://jobs.ashbyhq.com/lumilens/73a1f71c-72d6-4797-8e46-8377277f8d03

## Job description

## ABOUT LUMILENS

At Lumilens we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing - faster, cooler, and massively more efficient.

We’re 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. At Lumilens, we’re developing high-speed photonics products purpose-built to power the future of AI infrastructure and high-performance computing.

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 scaling optical systems. Every line of code, every design decision, every breakthrough you help deliver will shape 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.

## POSITION OVERVIEW

As an Optical Manufacturing Test Engineer, you will play a critical role in validating and ensuring the quality of Lumilens’ photonic components, modules, and systems. This role blends hands-on production testing with hardware test development and reporting, supporting both new product introduction (NPI) and volume manufacturing. You’ll work closely with optical design, hardware, and manufacturing teams to perform design for manufacturing, calibration, characterization, and troubleshooting duties for next-generation photonics technologies.

## DUTIES/RESPONSIBILITIES

- End-to-end manufacturing test ownership: Ensure all the changes to test hardware, processes, etc. are under change control and follow established QMS requirements. This includes equipment selection and specification, tester BOM and estimated cost, test schematic diagram, test flows, work instructions, etc.
- Responsible for tester documentation and specifications. Analyze test results to ensure compliance with performance specifications and quality standards.
- Develop, assemble, validate, buy off and release the testers for production.
- Responsible for product test yield, with quality and reliability.
- Responsible for analyzing, defining, developing, and executing continuous improvement plans to achieve test yield, cycle time, throughput, and scrap reduction.
- Collaborate with quality teams for the planning and execution of qualification tests.
- Collaborate with design teams and process engineering to ensure design for manufacturing (DFM) and design for test (DFT) guidelines are met.
- Design, plan, and conduct optical and fiber testing on components, devices, and systems. Perform production calibration and testing of fiber optic components and modules.
- Maintain accurate, detailed records of test procedures and outcomes.
- Generate comprehensive test reports for internal and external stakeholders.
- Support troubleshooting and root cause analysis to resolve product issues.
- Collaborate with cross-functional engineering teams to support NPI and manufacturing ramp.
- Work closely with contract manufacturing partners to train operators, provide test process guidelines, and review/approval for any test change orders.
- Develop and implement the troubleshooting guidelines, including tools, templates, and data analysis for testers and products in manufacturing.
- Responsible for process control of all testers, including SPC, GR&R and other correlation studies.
- Collaborate with software engineers, IT and database architects to define better solutions to manage and analyze manufacturing test data at reasonable cost, high efficiency, and high scalability.

## SKILLS/EXPERIENCE

- Bachelor’s degree in Electrical Engineering, Industrial Engineering, Physics, or related field plus 12 years experience in high-volume optical transceiver manufacturing and/or automated test system development for electronics and optics manufacturing. Experiences in transceiver module tests at 400G, 800G, 1.6T, etc., are preferable.
- Excellent problem-solving and analytical skills.
- Expert in optical test equipment and protocols, and how they pertain to the manufacturing and design of optical transceivers.
- Hands-on experience with optical test instruments (e.g., optical spectrum analyzers, power meters, polarization controllers, bit-error-rate testers).
- In-depth technical knowledge and hands-on experience in yield analysis, problem solving, and implementation of manufacturing processes.
- Familiarity with processor communication interfaces and test automation tools.
- Data query and data analysis skills, using statistical tools and techniques is a plus.
- Practical experience in SPC, GR&R, tester correlation, and report generation.
- Ability to write or adapt scripts for automation (Python, LabVIEW, Visual Basic; Shell scripting is a plus)
- Experience in ongoing reliability testing and quality control best practices.
- In depth understanding of the quality management system and quality standard requirements.
- Expertise in optics FA processes and tools.
- Resourceful problem-solver with ability to apply knowledge creatively to test challenges.
- Capable of managing multiple test projects and priorities in a fast-paced environment.
- Ability to work well in a geographically diverse cross-functional team.
- Good command in English communication both verbal and written, including in-person and virtual presentation skills. Able to train and mentor peers when needed.
- International travel required.

## 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)

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