Remote Electronics/IoT Specialist — Agrotech Hardware

GreenSpire Farming Tech, S.L. is looking for a remote collaborator for electronics, sensing and IoT applied to agrotech hardware. Type: remote freelance/services contract. Initial commitment: 40–60 hours/month. Initial fee: $200–300 USD/month, scalable based on workload, performance and continuity. Duration: ongoing collaboration as long as objectives and deliverables are met. Project: GreenSpire develops a modular biosystem for controlled environment agriculture. We need technical support to define, document and prototype the basic electronics, sensing, wiring, firmware and data capture layer of the system. Tasks: Basic electrical architecture definition Sensor, microcontroller, power supply, connector and protection selection Simple electrical schematic design Basic firmware for sensor reading and actuator control Communication module integration and data export Test, wiring and maintenance documentation Coordination with CAD/mechanical team for housings, cable routing and accessibility Risk review for humidity, water, connections and continuous operation Requirements: Applied electronics background Experience with Arduino, ESP32, STM32, Raspberry Pi Pico or similar Analog/digital sensor handling Knowledge of relays, MOSFETs, power supplies, protections and connectors Ability to document schematics, tests and non-sensitive material lists IoT, agriculture, greenhouse, irrigation, pumps or humid environment experience a plus Strong organization, clear communication and confidentiality Conditions: Paid technical test before starting NDA required Full IP and industrial property transfer of all deliverables to GreenSpire Progressive and fragmented access to technical information Continuity review at 30 and 90 days