--- title: 'Senior Signal Integrity Engineer at Lumilens' canonical: 'https://feeny.ai/job/senior-signal-integrity-engineer-lumilens-bengaluru-3z1gyjcfqanm' type: 'job' last_seen: '2026-09-07' --- # Senior Signal Integrity Engineer at Lumilens - **Company:** Lumilens - **Location:** Bengaluru, India - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-02-04 - **Last confirmed live:** 2026-09-07 - **Apply:** https://jobs.ashbyhq.com/lumilens/e9285a8f-df83-4680-96be-9aa566d18f94 ## Job description Signal Integrity Engineer –1.6T OSFP Board Design Bengaluru, Karnataka, India / Onsite ## 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. 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 ofthe hardest challenges in optics, systems, and scale. 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. ## Role Overview We are seeking a senior SI Engineer with 15–20 years of experience to lead board‑level high‑speed electrical design and validation for 1.6T DR8 (200G/lane) OSFP optical modules, including technical leadership across multiple projects and mentoring of the SI team. Key Responsibilities: - Own SI/PI architecture and strategy for 1.6T DR8 OSFP modules: define channel budgets, interface architectures, and design rules for 200G PAM4 lanes from ASIC/DSP to front‑panel. - Lead pre‑ and post‑layout SI/PI simulations and reviews (S‑parameters, eye/PAM4 analysis, COM, crosstalk, jitter, PDN impedance) and sign‑off multi‑lane channels on dense module PCBs. - Define PCB stack‑ups, materials (e.g., ultra‑low‑loss laminates), via and breakout strategies, connector selections, and routing guidelines to meet performance, cost, and manufacturability targets. - Drive cross‑functional technical decisions with hardware, optics, mechanical, FW, and test teams, balancing SI/PI requirements against thermal, mechanical, and system constraints. - Lead lab correlation and validation plans: fixture/board design, TDR/VNA/BERT/oscilloscope measurements, de‑embedding strategies, and sign‑off criteria for engineering builds and production. - Provide technical leadership for SI‑related debug on proto and field issues, driving structured root‑cause analysis and design/process improvements across products. - Establish and maintain company‑wide SI/PI design methodologies, checklists, and documentation for current and future OSFP/QSFP‑class platforms. - Mentor and coach junior and mid‑level SI/hardware engineers; review and approve their simulations, reports, and design decisions. Required Qualifications: - B.E/B.Tech http://B.Tech or M.E/M.Tech http://M.Tech (or equivalent) in Electrical/Electronics Engineering with 15–20 years of relevant high‑speed SI/PI and board‑level design experience. - Deep expertise in very high‑speed SerDes (≥56G, strongly preferred 100G/200G PAM4) including channel modeling, equalization strategies, jitter/crosstalk analysis, and margining. - Extensive hands‑on experience with leading SI/PI tools (e.g., Sigrity, ADS, HFSS, SIwave, HSPICE or equivalents) and scripting/automation for simulation and report generation. - Proven track record bringing complex high‑speed hardware or optical modules from concept through production, including multiple design spins and volume manufacturing support. - Strong lab expertise with high‑bandwidth scopes, VNAs, BERTs, and TDRs, including correlation of measurements to simulations and management of external labs/vendors when needed. - Demonstrated ability to lead cross‑functional design reviews, influence architecture, and communicate complex SI/PI concepts clearly to both technical and non‑technical stakeholders. Preferred Qualifications: - Direct experience with OSFP/OSFP‑XD/QSFP‑DD optical transceiver designs at 800G/1.6T or similar data‑center interconnects, including familiarity with co‑packaged optics or line‑card interfaces. - Knowledge of IEEE 802.3 DR8/FR8/LR8‑class electrical/optical standards and relevant MSAs/OIF specifications and their implications on channel design and testing. - Background in EMI/EMC, mechanical and thermal considerations for pluggable modules and how they impact SI/PI trade‑offs. - Experience managing or technically leading small SI/PI or hardware teams, including setting roadmaps, reviewing performance, and guiding career development. ## What we offer - Competitive salary commensurate with experience - Comprehensive benefits package including health insurance - Professional development opportunities and certification support - Access to cutting-edge technology and cloud platforms - Collaborative work environment with cross-functional teams *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. ## 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 - [Sourcing Manager (Foundry & OSAT)](https://feeny.ai/job/sourcing-manager-foundry-osat-lumilens-singapore-26re9q580khj) — Singapore - [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