Manaam R.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I help build embedded, IoT, and wireless products from idea to working prototype. I work across firmware and hardware, so I can help with product architecture, MCU selection, circuit design, PCB design, firmware development, board bring-up, debugging, low-power optimization, and wireless protocol integration. I am also a Zephyr RTOS Technical Contributor and a Z-Wave Alliance Contributor/Member, with hands-on experience working on real embedded products, wireless stacks, battery-powered devices, hardware prototypes, and low-power IoT systems. What I can help with: - Embedded firmware development in C/C++ - Hardware development and PCB design - Circuit design, schematic review, and PCB review - Zephyr RTOS and FreeRTOS based firmware - PCB bring-up, board testing, and hardware debugging - IoT and wireless product development - Battery-powered and low-power device development - Sensor integration and driver development - Power supply, BMS, controller board, and sensor board development - Existing firmware and hardware debugging - Wireless protocol integration - Bootloader, OTA, and firmware update workflows - Power profiling and energy optimization - Custom protocol implementation - Production firmware debugging and field issue analysis Technical areas I have worked on: - BLE advertising, scanning, GATT services, and custom BLE protocols - Z-Wave and Z-Wave Long Range development - Zigbee, Thread, Matter, Wi-Fi, and IoT integrations - Zephyr RTOS drivers, devicetree, Kconfig, work queues, timers, and low-power firmware - Nordic nRF52, nRF53, and nRF54 based firmware development - Silicon Labs EFR32 firmware using Simplicity SDK and Gecko SDK - STM32 firmware, timers, ADC, DAC, DMA, UART, SPI, I2C, and GPIO - ESP32 firmware using ESP-IDF and FreeRTOS - Sensor integration including ADC-based sensing, accelerometers, current sensing, and event detection - Ultra-low-power and battery-powered device design - Energy-harvesting and wake-on-event type devices - Custom PCB design for sensor boards, controller boards, power boards, and BMS-related circuits - Schematic design, PCB layout, component selection, and prototype validation - Hardware bring-up, board testing, debugging, and lab measurements - Bootloaders, secure firmware updates, and application validation Experience: - MCUs: STM32, ESP32, Nordic nRF52/nRF53/nRF54, Silicon Labs EFR32 - SDKs: ESP-IDF, nRF Connect SDK, Simplicity SDK, Gecko SDK, STM32 HAL/LL - RTOS: Zephyr RTOS, FreeRTOS - Wireless: BLE, Wi-Fi, Zigbee, Thread, Matter, Z-Wave - Hardware: PCB design, schematic design, BMS, power boards, controller boards, sensor boards, battery-powered devices - Tools: Altium, KiCad, EasyEDA, CMake, west, Git, J-Link, GDB, oscilloscopes, logic analyzers I focus on building products that work reliably in real-world conditions, not just on the bench. I can help with quick prototypes, hardware development, PCB design, board bring-up, firmware for existing hardware, wireless issues, low-power optimization, or complete embedded product development.