Epoxy Engineer

Epoxy Engineer LocationBengaluru, IndiaEmployment TypeFull timeLocation TypeOn-siteDepartmentOperationsABOUT LUMILENSAt 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 OVERVIEWWe are seeking an Epoxy Engineer – Specialist with deep expertise in epoxy materials, formulations, and dispensing processes used in optical and photonic devices. This role is critical to ensuring high reliability, yield, and performance of optical assemblies through robust adhesive selection, development, and process optimization.The role will work closely with R&D, manufacturing, quality, and global operations teams, and act as a technical authority for epoxy-related challenges across product lines.DUTIES/RESPONSIBILITIESMaterials & Process DevelopmentDevelop, evaluate, and optimize epoxy formulations for optical and photonic applications (die attach, fiber attach, lid seal, underfill, etc.)Select adhesives based on optical, thermal, mechanical, and reliability requirementsDefine and validate dispensing, curing, and handling processes for production environmentsEstablish process windows, material specifications, and control plansTroubleshooting & Yield ImprovementLead root-cause analysis for adhesive-related failures (delamination, voiding, misalignment, optical loss, reliability issues)Support yield improvement and defect reduction initiatives in manufacturingResolve epoxy performance issues across temperature, humidity, and mechanical stress conditionsManufacturing & Scale-Up SupportSupport NPI and production ramp activities across global manufacturing sitesWork with equipment vendors on dispensing systems, curing ovens, and automationEnsure epoxy processes are scalable, repeatable, and cost-effectiveReliability & QualificationSupport material qualification and reliability testing (thermal cycling, damp heat, shear, pull, aging)Collaborate with Quality teams on FA, CAPA, and customer escalationsEnsure compliance with internal reliability standards and customer requirementsGlobal Technical Support & Knowledge SharingAct as a global technical expert for epoxy-related topicsProvide training and documentation for operations and engineering teamsInterface with epoxy suppliers and material vendors for formulation support and roadmap alignmentSKILLS/EXPERIENCE5–10+ years of hands-on experience with epoxy materials and adhesive processesDirect experience in optical, photonics, semiconductor, or precision electronics manufacturingStrong exposure to production troubleshooting and factory supportTECHNICAL SKILLSDeep knowledge of epoxy chemistry, curing mechanisms, fillers, and modifiersExperience with optical alignment-sensitive assembliesFamiliarity with dispensing technologies (time-pressure, auger, jetting, automated systems)Understanding of thermal, mechanical, and optical impacts of adhesive selectionAbility to analyze failure modes and drive data-based decisionsExperience in silicon photonics, fiber optics, or laser/optical modulesKnowledge of...