Embedded Engineer

1 week ago

India MedCuore Medical Solutions Private Limited Full time

Job Description Embedded Engineer (24 years) IoT | ESP32/STM32 | OTA | MQTT Location: Chennai Company: MedCuore Medical Solutions Pvt. Ltd. Nippo Airvue Type: Full-time About the role Build production-grade firmware for Nippo Airvue's smart Air Quality Monitors and Air Purifiers. You'll own board bring-up, connectivity, OTA, and reliability for devices deployed at scale across homes, hospitals, and enterprises. What you'll do Board bring-up & drivers: Initialize MCUs (ESP32-S3/ESP-IDF, STM32/HAL, nRF91/Zephyr). Develop drivers for IC/SPI/UART/ADC/PWM, sensors, displays, buzzers/LEDs, relays, and fans. Connectivity & protocols: Implement Wi-Fi/BLE and NB-IoT/LTE-M stacks; MQTT/HTTP(S) with TLS/X.509 provisioning, captive portal, fallback modes. Modbus RTU/TCP over RS-485 where required. Application logic: Sampling, filtering, calibration, data logging, event/alert rules, error handling, safe-state management, NVM wear-levelling. RTOS & power: Task design on FreeRTOS/Zephyr, ISRs, timers/queues; sleep states, power profiling, battery-life optimisation. OTA & security: Fail-safe OTA with A/B partitions and rollback; secure boot, firmware signing, versioning and release notes. Quality & testing: Unit tests, HIL tests, production test scripts (Python), factory provisioning (keys, serial/QR, calibration). Debug via JTAG/SWD, logic analyser, oscilloscope. Reliability & compliance: Watchdogs, brown-out handling, EMI/EMC-friendly firmware practices; support BIS / IEC 60335 / IEC 62368 testing. Collaboration: Partner with EE for schematic/layout reviews and with ME on enclosure/thermal constraints; support field pilots and vendor trials (India/China). Documentation: Firmware architecture, APIs/DFDs, test reports, ECR/ECO change logs. What you'll need B.E./B.Tech (ECE/EEE/CS) with 24 years in embedded firmware for IoT/consumer devices. Strong C/C++, RTOS (FreeRTOS or Zephyr), and MCU toolchains (ESP-IDF / STM32Cube / nRF Connect). Hands-on with IC/SPI/UART, GPIO/Timers/ADC, sensor integration, and board bring-up. Experience shipping Wi-Fi/BLE and/or NB-IoT/LTE-M devices, integrating to cloud (MQTT to AWS IoT/Azure). Proven OTA implementation and field updates. Confident with lab tools (DMM, scope, logic analyser) and debugging (JTAG/SWD, GDB). Git workflows, code reviews, structured documentation. Nice to have Exposure to acoustics/airflow control (fan curves, PID), HVAC/ERV integrations. Firmware-level EMI/EMC mitigation; experience in compliance test support. Field deployments/pilot rollouts and vendor coordination. Why Nippo Airvue Build Make-in-India smart air-care products at scale (AQM, Purifiers, De/Humidifiers, ERV). Ownership from prototype to production with real customers and rapid iterations. Collaborative team, clear roadmaps, and growth opportunities. How to apply Apply on LinkedIn or email your resume/GitHub to [Confidential Information] with subject Embedded Engineer Your Name. Include two bullets on your best OTA or connectivity project and a link to any public repos

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