Looking for a job

Zain Abbas

@zainabbas1

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I build production embedded firmware and hardware for low-power IoT, industrial, and connected devices.

Pakistan

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What I'm looking for

I'm looking to build production embedded and IoT products end to end, from hardware bring-up and PCB design through low-power firmware, wireless connectivity, and deployment.

I've shipped production firmware for more than 20 IoT, industrial, and home-automation devices, from bare-metal STM32 drivers to Zephyr RTOS wireless products.

At Melior ITS, I build firmware across three IoT product lines using Zephyr RTOS and FreeRTOS. My custom drivers and device tree overlays reduced hardware bring-up from 10 days to two, while low-power Wi-Fi, BLE, MQTT, and HTTP/S tuning extended wearable battery life by 48%.

I've also delivered Z-Wave home-automation firmware at DPL, designed successful PCB revisions at Zennovation Labs, and built freelance ESP32, nRF, STM32, and AVR solutions. My work spans PCB design, hardware debugging, connectivity, OTA updates, and production-ready embedded systems.

Experience

Work history, roles, and key accomplishments

Current

Embedded Systems Engineer II

Current

Melior ITS

Apr 2026 - Present (5 months)

Developed and maintained firmware for IoT device product lines using Zephyr RTOS and FreeRTOS, reducing field-reported bugs. Implemented and optimized Wi-Fi, BLE, MQTT, and HTTP/S connectivity stacks, extending battery life by 48%.

Zephyr RTOS FreeRTOS WiFi BLE MQTT HTTP(S)Device Drivers Device Tree PCB Design Schematic Reviews Signal Integrity Power Management

Embedded Systems Engineer I

Melior ITS

May 2024 - Mar 2025 (10 months)

Ramped up on Zephyr RTOS/FreeRTOS-based IoT development, building foundational device drivers and Wi-Fi/BLE/MQTT connectivity stacks.

Zephyr RTOS FreeRTOS WiFi BLE MQTT Device Drivers

Embedded Systems Engineer

DPL

Jan 2024 - Jul 2024 (6 months)

Engineered Z-Wave and MQTT firmware for a home-automation hub, integrating smart doors, locks, and leak sensors. Delivered multiple proof-of-concept prototypes for R&D initiatives.

Z Wave MQTT Firmware home automation Prototyping

Embedded Systems Engineer

Zennovation Labs

Aug 2023 - Dec 2023 (4 months)

Designed and reviewed PCBs for client applications, achieving first-pass success on 9 of 10 revisions. Built bare-metal and HAL-layer firmware for STM32 and Atmel microcontrollers.

PCB Design STM32 Atmel Bare Metal HAL I2C SPI External Flash Display

Embedded System Intern

Zennovation Labs

Sep 2022 - Jul 2023 (10 months)

Developed STM32 bootloaders and HAL abstraction layers for over-the-air updates. Contributed to bare-metal firmware programming across multiple prototypes.

STM32 Bootloaders HAL Bare Metal Firmware

Freelance Embedded Systems Engineer

Self-Employed

Delivered firmware for ESP32, nRF, STM32, AVR and other MCUs using ESP-IDF, FreeRTOS, ZephyrRTOS, HAL, and Bare-Metal. Offered embedded firmware and hardware design services for clients.