Lead System Engineer

Company Description GuestGreet.ai is an AI voice assistant platform designed specifically for luxury hotelsThe roleYou will assess our existing prototype and supplier platforms, recommend the most practical production architecture, and lead delivery of a secure, reliable and commercially viable device.Possible approaches include adapting an established telephone platform or developing a custom carrier board around a Linux computing module. You must be comfortable making and substantiating that decision.Your responsibilities* Define hardware architecture, component selection, power requirements, thermal design and target manufacturing cost.* Evaluate telephone manufacturers, computing modules, board support packages and component availability.* Develop and maintain our ARM64 Linux platform, including boot configuration, drivers, device interfaces and reproducible system images.* Integrate SIP calling, handset and speakerphone audio, display, buttons, indicators, Ethernet, PoE and wireless connectivity.* Validate microphone arrays, echo cancellation, noise suppression and clear hands-free conversations in realistic hotel environments.* Implement dedicated-button AI activation and telephone priority. AI must stop during telephone calls, and call audio must never enter the AI service.* Implement secure provisioning, GuestGreet-controlled signing keys, signed updates, A/B rollback, watchdog recovery and remote diagnostics.* Review schematics, PCB layouts and manufacturing files; lead prototype bring-up and fault investigation.* Coordinate enclosure integration, production testing, certification work, pilot builds and manufacturing handover.* Secure complete engineering documentation, source-code access and appropriate manufacturing and maintenance rights.Essential experience* Shipped at least one commercial embedded Linux hardware product into production.* Strong C/C++ and embedded Linux development, debugging and board bring-up skills.* Practical ARM Linux BSP, kernel, device-tree and driver experience.* Experience integrating SIP/VoIP calling and real-time audio on embedded devices.* Working knowledge of ALSA, I2S/USB audio, codecs, microphones, amplifiers and acoustic echo cancellation.* Ability to review electronic schematics and PCB designs and troubleshoot hardware using laboratory instruments.* Experience working directly with OEM/ODM suppliers and contract manufacturers.* Understanding of manufacturing test, component lifecycle, product reliability and secure device maintenance.* Clear technical communication and the ability to own delivery across external partners.Especially valuableHotel telephone or PBX integration; alternatives to Raspberry Pi Compute Modules or comparable Linux modules; WebRTC; PoE design; acoustic tuning; and experience supporting CE, FCC or UAE TDRA approval projects.