Overview We are seeking a highly experienced Senior Electronics Engineer to lead the end-to-end development of a low-power, battery-operated industrial RF module. This confidential project, conducted under NDA, requires a professional with strong autonomy, technical depth, and the ability to collaborate with internal teams and the end customer.Key Responsibilities Full hardware design: schematics, PCB layout, fabrication files (preferably Altium Designer). Low-power system architecture, preferably using 3.6 V lithium AA batteries for operation. RF communication integration ensuring compatibility with ISO 15693. Careful HF antenna design (13.56 MHz), including theoretical tuning and impedance considerations. Practical tuning using RF equipment (e.g., VNA) is considered a plus but not mandatory. The antenna must achieve reliable communication in industrial conditions. Handle procurement of components and PCB fabrication, assembly, perform bring‐up and testing, and deliver all hardware fully assembled and operational. Firmware development in C/C++ (preferably STM32), optimized for ultra-low-power operation. Implementation of wake-up events, RF data reception, display update logic, and sleep mode control. Creation of 12 fully functional prototypes, including ordering, assembly and validation tests. Weekly project meetings and dynamic collaboration upon changing requirements. Integration work with the mechanical design team for casing fit and performance. Direct interaction with the end customer under NDA. Production of documentation covering hardware, firmware, and testing procedures.Required Experience: Fluent in English, both spoken and written. 5+ years of experience in electronics engineering. Strong experience with low-power embedded systems. Hardware design for battery-powered systems. Hands-on RF design experience, preferably ISO 15693 or related HF protocols. Proficiency in C/C++ for microcontrollers (STM32 preferred). Ability to manage complete product development cycles autonomously.Preferred Skills: Experience in low-level control of E‐ink displays (raw SPI commands, no high-level tools). Experience with EMC/EMI considerations in industrial environments. Experience with vibration-resistant electronic design for harsh environments. Portfolio showcasing relevant low-power and RF designs (preferred, not mandatory).Workflow ·Minimum one remote sync meeting per week. ·Additional technical discussions scheduled as needed. ·Milestone-based delivery aligned with project timeline.Deliverables Complete hardware design package (schematics, PCB layout, Gerbers, BoM). Final firmware source code in C/C++. 12 fully assembled and tested functional prototypes. Technical documentation and test results. Support during integration and customer validation.Intellectual property All intellectual property generated during this project will belong exclusively to Ynvisible. The work will be treated as if produced internally by a full-time company engineer. All hardware designs, firmware, documentation, and prototypes are property of Ynvisible. The engineer will work under strict NDA and contribute to an IP-sensitive project linked to ongoing patent filings.