Hello 👋, my name is

Usman Mehmood

I'm an embedded software engineer by profession, working in the Functional Safety domain. I love building embedded systems, IoT devices and other software solutions.

About Me

My name is Usman Mehmood and I'm an embedded software engineer at Safety System Products GmbH & Co. KG.

Considering myself a "full-stack" engineer, I take pride in my diverse skill set. From designing complex circuits and multi-layer PCBs to making production ready desktop and server application, and everything in between, I like being able to do it all!

IEC 61508 (SIL-3) and MISRA compliant firmware development in Baremetal C, Zephyr and FreeRTOS.
Proficient with embedded interfaces: SPI, I2C, UART, CAN/J1939, Bluetooth, Bluetooth Mesh, RS485, and MQTT.
Development of .NET (C#) desktop, server, and production tooling; experience with Beckhoff PLC and Structured Text.
CI/CD pipelines, CMake-based builds, and automated testing for firmware and manufacturing workflows.
Schematic and PCB design using KiCad; prototype bring-up, debugging, and SMT rework.
B.E. Mechatronics with thesis on autonomous 3D mapping and SLAM.

Usman Mehmood standing in a town street with snow-covered mountains in the background

Close-up of a laptop showing code in Visual Studio Code

Usman Mehmood standing on a rocky riverside path with a camera in hand

My Tech Stack...

C, CMake
IEC 61508
MISRA
Zephyr
FreeRTOS
Beckhoff
TwinCAT
.NET, C#
JS, Dart

Experience

Embedded Software Engineer @Safety System Products GmbH & Co. KG

Jan 2023 - Present

Developed and certified a SIL-3 compliant industrial gateway, connecting wireless PLC systems to PROFINET and FSoE.
Achieved 100% statement and branch coverage for all in-scope safety firmware using HIL tests and fault insertion, excluding certified third-party components and toolchain libraries.
Built and maintained CI pipelines for firmware build, static analysis, and automated test execution, improving release reproducibility and reducing regression risk.
Developed production and service tooling for mass programming, configuration, update, and repair workflows to support manufacturing and field servicing.
Delivered an end-of-line assembly line test system using Beckhoff PLCs, integrated with the company ERP system for automated test traceability and manufacturing feedback.

#STM32

#MISRA

#IEC-61508

#Functional Safety

#CI/CD

#.NET

Embedded Software Engineer @MRS Technologies, a division of MRS Electronic GmbH

July 2021 - Dec 2022

Engineered low-power BLE mesh nodes and increased battery life from ~9 months to 3+ years through firmware optimization and hardware/algorithm tradeoffs, without degrading user experience.
Architected and implemented an “IoT Core” framework in C to enable code reuse across a 10+ device home automation and energy management ecosystem, accelerating delivery and reducing platform risk during chip shortages.
Built .NET middleware SDKs for industrial communication (CAN bus, Modbus RTU, Modbus TCP).
Reverse-engineered telemetry protocols from solar inverters and industrial devices to integrate data into monitoring and energy-management systems.
Led field application engineering for automotive-grade PLC deployments for customers in Dubai (UAE), supporting bring-up, integration debugging, and customer-facing technical execution.
Developed tooling for SAE J1939 symbol composition/export across multiple formats for our PLC programming desktop app.

#ESP32

#nRF52

#FreeRTOS

#Zephyr

#HomeAutomation

#BLE

#LowPower

System Design Engineer @RISETech

Oct 2020 - June 2021

Owned end-to-end embedded product development across firmware delivery, electronics refinement, and mechanical/system integration, driving prototypes toward product-ready implementation.
Developed EPIC, a wearable generalized tonic-clonic seizure monitoring prototype, under tight space, signal-quality, and power constraints.
Improved legacy circuits and PCB layouts by adding safety/performance enhancements and optimizing designs for manufacturability and reliability.

#ESP32

#nRF52

#LowPower

#Wearables

#BLE

Embedded Systems Intern @Air University Islamabad

June 2017 - Oct 2017

Designed and built an intelligent energy monitoring system for homes and small buildings, delivering a functioning POC.
Created schematics and PCB using KiCad, and handled enclosure assembly and wiring using SolidWorks mechanical integration.

#ESP32

#KiCad

#PCBs