Senior Silicon Photonics Engineer

Lumilens Inc.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Benefits offered by this job

Health insurance

Job summary

Lumilens Inc. is seeking engineers to design high-speed silicon photonic ICs, taking concepts through tapeout to silicon validation.

The role suits PhD graduates to early-career engineers (0–5 years) eager to work on production-bound systems, not just simulations. Responsibilities include designing photonic devices, running EM/circuit/thermal simulations, implementing PIC layouts, and collaborating with electronics and packaging teams for CPO/NPO systems.

Qualifications

• PhD in Electrical Engineering, Physics, or related field (silicon photonics or closely related area).
• 0–5 years of relevant experience (including fresh PhD graduates).
• Experience in design and simulation of silicon photonic devices or PICs.
• Strong understanding of guided-wave optics and device physics.
• Familiarity with tools such as Lumerical, COMSOL, or equivalent.
• Exposure to PIC layout and tapeout flows (PDK, DRC/LVS).
• Basic understanding of optical communication systems and/or RF effects.

Responsibilities

• Design and optimize silicon photonic devices and circuits, including modulators, photodetectors, and passive components.
• Perform multi-domain simulations (EM, circuit, thermal) to meet bandwidth, loss, and efficiency targets.
• Implement PIC layouts (GDS) using foundry PDKs and support tapeouts.
• Co-design with electronics and packaging teams for RF/optical systems.
• Support silicon bring-up and characterization, correlating measurements with simulations.
• Contribute to design libraries, modeling, and methodology development.

Skills

Silicon photonics

PIC design

Lumerical

COMSOL

PDK/DRC/LVS

Tapeout

RF effects

Guided-wave optics

0–5 years experience

Education

PhD in Electrical Engineering or Physics

Tools

Lumerical

COMSOL

Job description

Role Overview

You will design high-speed silicon photonic integrated circuits operating at the limits of bandwidth and integration, and take them from concept → tapeout → silicon validation.

This role is suitable for strong PhD graduates through early-career engineers (~0–5 years experience) who want to work on real, production-bound systems, not just simulations.

Roles & Responsibilities

• Design and optimize silicon photonic devices and circuits, including:

  • High-speed modulators (MZI, ring, advanced structures)

  • Photodetectors and receiver building blocks

  • Passive components (couplers, filters, routing)

• Perform multi-domain simulations (EM, circuit, thermal) to meet targets in:

  • Bandwidth (200G/lane+)

  • Insertion loss, extinction ratio, efficiency

• Implement PIC layouts (GDS) using foundry PDKs and support tapeouts

• Co-design with electronics and packaging teams for CPO/NPO systems:

  • RF effects, parasitics, signal integrity, and thermal constraints

• Support silicon bring-up and characterization:

  • Correlate measurement vs simulation

  • Drive design iterations and improvements

• Contribute to design libraries, modeling, and methodology development

Requirements

• Education

  • PhD in Electrical Engineering, Physics, or related field (silicon photonics or closely related area)

• Experience

  • 0–5 years of relevant experience (including fresh PhD graduates)

• Technical Skills

  • Experience in design and simulation of silicon photonic devices or PICs

  • Strong understanding of guided-wave optics and device physics

  • Familiarity with tools such as Lumerical, COMSOL, or equivalent

• Implementation Skills

  • Exposure to PIC layout and tapeout flows (PDK, DRC/LVS)

• System Awareness

  • Basic understanding of optical communication systems and/or RF effects

Nice to Have

• Experience with high-speed devices (>100 GHz bandwidth or equivalent)

• Exposure to CPO/NPO or optical transceiver architectures

• Familiarity with SiPh + III-V integration

• Experience with inverse design / adjoint methods (e.g., Meep)

Why Join Us

• Work on real products at 200G/lane+, not just research prototypes

• Direct impact on AI infrastructure and hyperscale systems

• Fast iteration cycles from design → silicon → system

• High ownership early in your career

• Comprehensive benefits package including health insurance

• Collaborative environment with world-class engineering and R&D teams