---
title: 'Process Engineer (Die Attach / Wire Bond / Active Alignment / Overall Line) at Lumilens'
canonical: 'https://feeny.ai/job/process-engineer-die-attach-wire-bond-active-alignment-overall-line-lumilens-hczvcxb1c6c2'
type: 'job'
last_seen: '2026-09-07'
---

# Process Engineer (Die Attach / Wire Bond / Active Alignment / Overall Line) at Lumilens

- **Company:** Lumilens
- **Location:** Bulim Square
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-17
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/lumilens/b5caafa8-3c9c-4efc-b1dd-7cd2eb9d9baf

## 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

We are seeking hands-on Process Engineers to support our volume manufacturing ramp-up at our Bulim facility. In this role, you will be responsible for process development, qualification, yield optimization, and continuous improvement across microelectronics packaging, optical module assembly, and high-precision automation lines.

We are hiring across multiple domain specializations:

- Die Attach (DB / Die Bond)
- Wire Bond (WB)
- Active Alignment (AA / Optical Alignment)
- Process Engineering – Overall / Integration

## Key Responsibilities

- Process Setup & Optimization: Establish robust process windows, parameter recipes, and standard operating procedures (SOPs) for assigned production modules (DB, WB, AA, or End-to-End Line Integration).
- Yield & Defect Reduction: Monitor line yield metrics, lead 8D root-cause failure analysis (FA), and implement corrective actions for recurring process/equipment defects.
- NPI to Mass Production: Partner with NPI and Equipment Engineering to qualify new tooling, materials (epoxies, substrates, bonding wire), and automation platforms for high-volume ramp.
- Statistical Process Control: Apply SPC, DOE, FMEA, and Cpk analysis to drive process stability, cycle time reduction, and cost-efficiency initiatives.
- Cross-Functional Collaboration: Work closely with Manufacturing Operators, Quality Engineers, and Maintenance Technicians to resolve line stops and uphold quality standards.

## Qualifications & Requirements

- Education: Bachelor’s Degree or Diploma in Mechanical, Electrical/Electronic, Mechatronics, Materials Science, or Manufacturing Engineering.
- Experience: 2+ years of relevant process engineering experience in semiconductor packaging, microelectronics, surface-mount technology (SMT), or camera/optical module manufacturing.
- Domain Expertise (one or more of the following):
- Die Bond (DB): Experience with epoxy/eutectic dispense, high-precision pick-and-place, and flip-chip bonding.
- Wire Bond (WB): Experience with ball/wedge wire bonders (gold/copper/aluminum wire) and bond pull/shear testing.
- Active Alignment (AA): Experience with multi-axis optical alignment, collimation, laser/lens positioning, and UV cure dispensing.
- Overall Process: Strong background in line balancing, end-to-end yield tracking, DOE, and cleanroom protocols.
- Technical Skills: Proficiency in SPC tools (JMP, Minitab), GD&T, and structured problem-solving methodologies (8D, 5-Why, Fishbone).
- Work Arrangement: Willingness to work on-site at the Bulim plant and support operational needs during ramp-up phases.

## 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

- [Staff Wafer-Level Testing Equipment Engineer](https://feeny.ai/job/staff-wafer-level-testing-equipment-engineer-lumilens-singapore-2p0ya27rda60) — Singapore
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- [Senior/ Staff NPI Wafer Bumping/Fan-Out Process Engineer](https://feeny.ai/job/senior-staff-npi-wafer-bumping-fan-out-process-engineer-lumilens-singapore-ma0tx35az5eq) — Singapore
- [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