Hi! I am Dr. Shahb Niazi, a PhD-qualified Electrical Engineer with over 24 years of experience specializing in embedded systems, PCB design, hardware design, and advanced R&D. As a Senior Consultant and Project Leader at CARE (Center Of Advanced Robotics and Embedded system), I lead a highly skilled team of engineers and researchers, driving innovation across a diverse range of industries.
Our core expertise lies in embedded systems development, advanced PCB design, and industrial automation. From real-time firmware for microcontrollers to high-speed, multi-layer PCB layouts, we deliver hardware-software solutions optimized for precision, performance, and reliability. With deep experience in automation protocols, sensor integration, and control systems, we build intelligent, production-ready electronics tailored for industrial, commercial, and custom applications.
we provide optimized embedded and IoT solutions engineered for high performance, low power, and full compliance with industry standards.
Our designs ensure reliable integration, EMI/EMC robustness, and scalable architectures for real-world industrial needs.
By reducing time-to-market and enhancing system efficiency, we can help clients stay competitive in demanding tech environments.
Electrical Engineering
Industrial Automation
Embedded C
Embedded Operating System
Firmware Programming
Altium Designer
Multilayer PCB
KiCad
EasyEDA
PCB Design
Layout Design
Schema Diagram
ESP32
STM32
Arduino Firmware
Greg G.
Grand Blanc, Michigan
$100/hr
4.5
74 jobs
I am a Senior Electrical Engineer with a Master’s degree and 16 years of experience designing embedded electronic systems from concept through production. My work includes electronics architecture, schematic design, PCB layout, firmware development, server-side system integration, and prototype bring-up for low-volume and production hardware.
I have extensive experience with PCB design and manufacturing, including over 10 years using Altium Designer, along with Eagle, KiCad, and other professional tools. My designs account for signal integrity, power integrity, EMC considerations, and manufacturability. I regularly support projects through prototype builds, validation, and transition to contract manufacturing.
My technical background includes a wide range of sensors and subsystems such as temperature, humidity, time-of-flight, reflective sensors, load cells, RTDs, pressure sensors, light sensors, smoke detection, IMUs, magnetic sensors, mmWave radar, GPS, and image sensors. I design complete systems that integrate sensing, processing, power management, communications, and backend connectivity.
I have developed designs involving bidirectional motor control, piezo mist drivers, servos, heaters, LED drivers, PMICs, battery charging and protection, audio systems with mixing and noise cancellation, RFID and NFC, AC-powered systems, switch-mode power supplies, vision systems, and closed-loop temperature control using PID.
My embedded software experience includes bare-metal and RTOS-based development across a wide range of platforms, including PIC, AVR, SAMD and SAMG, STM32, nRF52, EFM32, MSP430, PSoC, LPC, Kinetis, i.MX, Jetson, and Raspberry Pi. I work with Microchip, Atmel, Nordic, ST, Silicon Labs, and Espressif toolchains, as well as FreeRTOS, uC/OS-III, Zephyr, and FPGA-based systems.
I have significant experience with IoT system integration beyond the device level. This includes server-side communication protocols for connected products, backend services, databases, and client-facing applications. I have worked with REST APIs, MQTT, WebSockets, TCP/UDP, and custom protocols, using Python and Node.js on the server side, along with SQL and PostgreSQL databases. I have also developed web-based client portals using React and Bootstrap to support device management, data visualization, and system administration.
Separately, I use Python extensively as a development and engineering tool. This includes writing scripts and utilities for automation, testing, debugging, manufacturing support, data analysis, and workflow integration during hardware and firmware development.
I have designed wireless and connected products using ESP32 and ESP8266, nRF52, u-blox cellular modules, LoRa, Zigbee, and Z-Wave. These systems have been deployed across consumer, industrial, automotive, marine, aviation, and agricultural applications.
Industry experience includes RV systems, drones, consumer electronics, industrial equipment, automotive lighting and heating, marine wireless sensor networks, aviation seat and heater controls, and agricultural equipment. I am comfortable working with both startups and established manufacturers and understand the tradeoffs required to move a design from prototype to production.
I focus on building reliable, manufacturable systems and communicating clearly throughout the project. If you need an engineer who can own the hardware, firmware, and system integration end to end, I am ready to help.
Electrical Engineering
Altium Designer
Arduino
C++
Java
Microcontroller Programming
PCB Design
Eagle
Autodesk Inventor
Thuan L.
Ho Chi Minh City, Vietnam
$32/hr
5.0
99 jobs
I am a professional embedded software engineer with more than 12 years of experience. My current areas of expertise are IoT Applications & Embedded Systems Design, including embedded hardware/software.
𝐌𝐘 𝐒𝐊𝐈𝐋𝐋𝐒:
- Know about MCU: Nordic, Silicon Labs, AVR, PIC, ESP, TI CC32xx, ESP32, Qualcomm QCC51xx, etc.
- Have experience in programming languages such as C/C++, C#, Java
- Solid knowledge of standard interfaces such as I2C, SPI, UART, and CAN.
- Have experience using debugging tools such as Segger Jlink, CAN bus analyzer, and Logic analyzer.
- IoT devices with wireless connectivity such as LTE, CAT-M1, NB-IoT, LoRa/LoRaWAN, BLE, WIFI, NFC
- Good experience in AWS Service, AWS IoT, AWS Shadow, and AWS Jobs.
- Good experience in Battery Management Systems based on BQ products from TI.
- Good experience with Audio Codec chips.
- Experience with AI/ML on Edge Impulse with nRF Connect
- True wireless earbuds, headsets and speakers, Bluetooth ® LE Audio standard from Qualcomm: QCC5141, QCC5171, QCC5181,...
We have worked with wearable devices and medical devices:
- ECG 1, 3, 12 leads with ADS1292, ADS1293, ADS1298
- EEG with ADS1299
- Body temperature with MAX302025, MAX30208
- PPG with MAX86178, MAX86178
- SPO2 with OB1203, MAX32664 sensor hub
- Vital signal with AFE4950
- OTA firmware update via Bluetooth/WIFI
End-to-End Embedded & Hardware Solutions
I provide complete product development services — from concept and design through prototyping, firmware, and production — for IoT, wearables, medical, and consumer electronics.
Hardware & PCB Design
- Multi-layer PCB design for high-reliability, high-performance systems
- High-speed design: USB 2.0, HDMI 2.0, DDR3/DDR4/LPDDR4, PCIe, NAND Flash, Ethernet (up to 10GBase-T1), PoE++
- Microcontrollers & SoMs: ARM Cortex-M3/M4 (STM32, ESP32, Nordic nRF52/53/91); custom boards for Raspberry Pi CM4, iMX8, Jetson Nano/Xavier/Orin, RK3588/3568, TI AM6254
- Power & analog: DC-DC (Flyback, Boost, Buck, LDO), BLDC/servo motor control, high-resolution ADC/DAC, audio circuits, and battery management (BMS)
- DFM/DFA and EMC/EMI compliance, with certification support (CE, FCC, FDA-ready)
- Tools: Altium Designer, KiCAD, Eagle, EasyEDA, OrCAD; SolidWorks and Inventor for 3D/enclosure design
Firmware & Connectivity
- Embedded software in C, C++, Python, and Qt, with RTOS integration and low-power optimization
- Custom driver development and communication protocols: QSPI, I2C, SPI, RS485/RS232, CAN, Modbus (TCP/IP/RTU)
- Connectivity stacks: BLE, Wi-Fi, NFC, LoRa/LoRaWAN, LTE, CAT-M1, NB-IoT, GSM (3G/4G)
IoT platforms: MQTT, ThingsBoard, AWS IoT, Blynk; secure OTA updates, device provisioning, and cloud integration
- Robotics: ROS/ROS2 for AGV, AMR, and 6-axis robot applications
- Embedded UI/UX: Figma, TouchGFX, LVGL
AI & Cloud Integration
- Edge AI/ML deployment (Edge Impulse, TensorFlow Lite)
- Predictive maintenance and anomaly detection for IoT/IIoT
- Cloud integration with AWS, Azure, and Google Cloud
- Cross-platform mobile apps (Android/iOS) and web dashboards for monitoring and analytics
Product Leadership
- Proven experience leading cross-functional teams in startup environments
- End-to-end project management across design, fabrication, and procurement for cost-efficient, on-time delivery
- Strong troubleshooting and research skills for electrical evaluation, testing, and design optimization
🔑𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒:
Embedded Design, Hardware Design, Firmware Development, Mobile App Integration, IoT Device, Medical Device Design, Embedded Systems, Real-time Operating Systems (RTOS), Microcontroller Programming, Sensor Integration, Wireless Communication (Bluetooth, Wi-Fi), Low Power Design, Wearable Devices, Firmware Architecture, Embedded Software, Device Drivers, System-on-Chip (SoC), PCB Design, Signal Processing, IoT Platforms, Cloud Integration, Mobile App Development, Web Portal Design, Healthcare Technology, Remote Monitoring, Data Security, Telemetry, ARM Cortex, ESP32, Device Connectivity, Embedded Prototyping, Human-Machine Interface (HMI), Medical Device Compliance, Mobile-Connected Devices, IoT Security, BLE, Firmware Debugging, Connectivity Solutions, Edge Computing, Smart Devices, Industrial IoT.
Embedded System
STM32
Raspberry Pi
ESP32
LoRa
Electrical Design
PCB Design
KiCad
Prototyping
Altium Designer
NVIDIA Jetson
Robot Operating System
Bluetooth LE
Wearable Technology
nRF52
AI Development
Linux
Mobile App
GPS
Industrial Design
Paul P.
Ho Chi Minh City, Vietnam
$40/hr
4.7
585 jobs
Hi, I'm Paul. Transforming complex tech ideas into market-ready products is my forte. With 8 years of hands-on experience, I offer end-to-end expertise in advanced PCB design, rapid prototyping, and robust firmware development for IoT, robotics, and ultra-low power applications. My background as a startup team leader ensures a product-centric vision and accelerated project/ MVP delivery.
1. What I Offer: End-to-End Embedded & Hardware Solutions
- Advanced PCB Design & Hardware Development: Multi-layer PCBs for complex applications, focusing on reliability and performance.
- High-Speed Design: Expertise in USB 2.0, HDMI 2.0, DDR3/DDR4/LDDR4, PCIe, NAND Flash, 10/100/1000/10Gbase-T1 Ethernet, PoE++.
- Microcontrollers & SoMs: ARM Cortex-M3/M4 (STM32WL, ESP32, Nordic nRF52/53/91 series); custom boards for Raspberry Pi CM4, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126, TI AM6254.
- Power & Analog: DC-DC (Flyback, Boost, Buck, LDOs), motor control (BLDC, AC/DC servo via I/O, ADC, CAN), high-resolution ADC/DAC, Audio circuits.
DFM/DFA & Compliance: Strong knowledge of manufacturing, assembly processes, and layout techniques for EMC/EMI compliance.
- Tools: Altium Designer (Altium365/CircuitMarker), KiCAD, Eagle, EasyEDA; OrCAD, PSpice, CAM350.
- Prototyping: Experience with BOM creation (Digikey/Mouser/JLCPCB) and combining dimensional drawings into precise Gerber formats.
- CAD/3D design tool: SolidWorks, Inventor...
2. Robust Firmware Development:
- Languages: C, C++, Python, Qt.
IoT & Wireless: MQTT, Thingsboard, AWS IoT, Blynk; experience with RF, Wi-Fi, BLE, GSM (3G/4G/LTE), LoRaWAN.
- Robotics: Expertise in ROS/ROS2 for applications like AGV, AMR, 6-axis robots.
Low-level Interaction: Proficient in designing custom drivers, managing communication protocols (QSPI, I2C, RS485, RS232, CAN, Modbus TCP/IP/RTU).
- UI/UX for Embedded: Figma, TouchGFX, LVGL for STM32, ESP32, Raspberry Pi.
3. Product & Project Leadership:
- Startup Leadership: Proven ability to lead and manage cross-functional teams in startup environments.
- Project Management: Expertise in managing design, fabrication, and procurement for cost-efficient and timely PCB acquisition.
- Problem-Solving & Research: Strong initiative, research capabilities, and excellent troubleshooting skills for electrical evaluation, testing, and PCB issues.
4. Why Partner with Me?
- End-to-End Product Vision: My background in leading startup projects provides a holistic view, ensuring your solution is not just technically sound but also viable and market-ready.
- Deep Technical Mastery: From complex high-speed routing and power supply design to robust firmware for robotics and IoT, I handle intricate challenges with precision.
- Cost & Time Efficiency: My knowledge of DFM/DFA and experience in optimizing BOMs, coupled with efficient procurement management, helps streamline your project and reduce overall development costs and time.
Ready to turn your innovative idea into a high-quality product?
Let's connect to discuss how my expertise can drive your project's success.
Embedded System
STM32
Raspberry Pi
ESP32
LoRa
Electrical Design
PCB Design
KiCad
Prototyping
Altium Designer
NVIDIA Jetson
Robot Operating System
Bluetooth LE
Wearable Technology
nRF52
AI Development
Linux
Mobile App
GPS
Industrial Design
Slobodan I.
Krusevac, Serbia
$25/hr
4.9
46 jobs
I’m an Embedded Systems Engineer specializing in Firmware development, with nearly 10 years of experience in the field. I have extensive experience with the following microcontroller families: PIC16F/18F, STM32 and other ARM Cortex-based MCUs, ATmega, ATtiny, SAMD—and most recently, the ESP32 family for IoT devices.
1️⃣My strongest skill is an in-depth knowledge of MCU internal architecture and operating principles: ⚡Memory organization, ⚡Instruction sets and execution, ⚡Device configuration, ⚡Watchdogs, ⚡Interrupt services (including multiple-interrupt handling), and ⚡Peripheral management. I’ve worked with virtually all standard peripherals found on modern MCUs— 🚀 Precise Timer usage; 🚀 PWM drivers; 🚀 Capture-Compare units; 🚀 ADCs; DACs; and 🚀 Serial Communications (I²C, SPI, USART, I²S). Less common peripherals I’ve tackled include the STM32 🔹AES encryption accelerator; the PIC16F’s 🔹NCO and 🔹logic-gate features; the PIC18F 🔹USB module; and the ESP32’s 🔹PDM and 🔹I²S interfaces and various other specialized modules.
➡️This deep understanding of MCU internals lets me write high-quality code with very few bugs from the outset, and it makes debugging far faster in later development stages.
2️⃣Hardware integration
I deliver seamless, efficient hardware integration for:
🔹Sensors (analog and digital: temperature, humidity, light, voltage) using SPI, I²C, 1-Wire, USART, etc.
🔹Input devices from simple buttons, keypads, potentiometers, and rotary encoders to touchpads and sliders.
🔹Output devices including LCDs (various sizes), OLEDs, addressable LEDs, 7-segment displays, touchscreens, and more. I go beyond plain text and primitives, 🎨crafting eye-catching UIs with attractive fonts, colors, images, and animations whenever possible.
3️⃣I can develop—and maintain—a complete embedded-system firmware from start to finish, ensuring it’s easily maintainable by future engineers. When your embedded system is part of a larger ecosystem (e.g., IoT devices or desktop/mobile-controlled systems), I’ve implemented higher-level protocols like USB, Bluetooth/BLE, HTTP, and MQTT. I write clean, well-documented firmware APIs that integrate effortlessly into any larger system.
4️⃣An invaluable skill I bring is the ability to emulate missing peripherals entirely in software—avoiding the time, cost, and chaos of a board redesign. When hardware truly falls short, I step in to replicate its functionality in firmware, keeping development on schedule and often yielding more flexible, upgradable solutions. Of course, this isn’t a cure-all: some features simply demand a hardware revision.
5️⃣When required, I code “close to the metal” in low-level C or even Assembly. I’ve worked on legacy chips (e.g., Intel 8051 and 6502 derivatives) where assembly-only firmware was essential.
6️⃣Circuit and PCB design
Although my primary focus is firmware, I hold an electronics engineering degree and am proficient at reading schematics. I collaborate smoothly with hardware designers and can propose elementary hardware solutions when needed.
7️⃣I’m a thorough researcher who always studies documentation carefully before drawing conclusions. While this can slow initial progress, it pays off with faster, more reliable development later on.
8️⃣Other skills and interests
Windows desktop app development (WinForms)
Web scraping (I’ve built sports-results scrapers)
Retro game development (I’ve completed a SNES game)
You can find many of my projects—console utilities, ASCII-art games, web scrapers, and more—on my GitHub page.
Thanks for visiting my profile!
Embedded System
Firmware
Firmware Programming
Microcontroller Programming
STM32
ESP32
Internet of Things
Internet of Things Software
Embedded C
PIC Programming
C
Arduino
Microcontroller
GUI Design
Assembly Language
Javaid M.
Islamabad, Pakistan
$15/hr
5.0
10 jobs
50+ hardware and embedded systems projects delivered, from concept through manufacturing.
Full project lifecycle ownership: requirements → schematic → PCB layout → firmware → prototyping → testing → DFM/production handoff.
Projects spanning industrial electronics, IoT devices, RF systems, wearables, and battery-powered products.
I design and build hardware products that survive real-world contact — not just designs that work in simulation.
For 6+ years, I've taken products from a blank schematic to manufactured, field-deployed hardware: industrial electronics, IoT devices, RF systems, and embedded platforms used in real industrial and consumer environments. I work across the full stack — system architecture, PCB layout, firmware, prototyping, and DFM — so you get one engineer who understands how a firmware design decision affects the PCB, and vice versa.
If you need someone who can own a hardware product end-to-end, or step into a specific phase (schematic review, firmware bring-up, RF tuning, manufacturing prep), I can help.
WHERE I ADD THE MOST VALUE
Custom PCB design, 2–12 layers, including high-speed digital and RF layouts
EMI/EMC-aware design and Design for Manufacturing (DFM)
Embedded firmware in C/C++ for ESP32, STM32, nRF52/nRF53, RP2040, and ARM Cortex-M platforms
IoT connectivity: Wi-Fi, BLE, LoRa, GSM/LTE, GPS/GNSS, cloud-connected devices
Industrial communication: UART, SPI, I²C, RS485, Modbus, CAN Bus
Power electronics: battery management systems (BMS), DC-DC converters, SOC/SOH estimation, industrial power monitoring
Prototype-to-production support, including BOM creation and manufacturing handoff
RECENT WORK
Industrial gas metering system (EVC V5) — redesigned the hardware architecture with RS485, CAN Bus, and Modbus communication, built to meet EMI/ESD protection and hazardous-environment requirements.
Ground Penetrating Radar — designed a 100–900 MHz subsurface sensing system built around a high-efficiency Class-E RF power amplifier and custom embedded electronics.
EEG smart glasses — developed wearable electronics for brainwave acquisition, signal conditioning, embedded processing, and wireless transmission.
Dual-MCU wireless audio platform — low-power architecture combining nRF5340 and ESP32-S3, with BLE, Wi-Fi, secure storage, and advanced power management.
Energy monitoring & battery management platform — multi-source monitoring across AC power, solar generation, and battery storage, with SOC/SOH estimation, GSM connectivity, Ethernet, and remote monitoring.
High-power RF amplifier — 100 MHz Class-E design delivering up to 1 kW output.
Multiple ESP32-based industrial and consumer products — automation, environmental monitoring, sensing, and data acquisition.
Aero-Guide robot — autonomous, AI-assisted navigation platform, finalist in a national engineering competition.
WHAT YOU GET WORKING WITH ME
Clear technical communication from day one — I'll tell you early if something won't scale, won't pass EMC, or won't be manufacturable, rather than letting you find out after fabrication.
Deliverables built for handoff: schematics, PCB layouts, Gerbers, BOMs, manufacturing files, firmware, and documentation — organized so another engineer (or your future self) can pick them up.
Fast, practical problem-solving when prototypes don't behave as expected.
A focus on shipping reliable, buildable hardware — not just a working bench demo.
Outside of engineering, I spend time mountain trekking, with expeditions to several major peaks in Pakistan, including base camps of multiple 8,000m mountains. It's where I keep my planning and problem-solving instincts sharp under pressure — skills that translate directly into debugging hardware at 2 am before a deadline.
If you have a hardware or firmware challenge — from a rough concept to a stalled prototype that needs fixing — I'd be glad to take a look and tell you honestly what it'll take to get it done right.
PCB Design
Multilayer PCB
Electronic Circuit Design
Firmware Programming
C
C++
Python
Analog Circuit
RF Design
3Design
Power Electronics
Digital Signal Processing
ML Automation
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At A Glance: Embedded Systems
Computer, electrical, and mechanical systems run nearly all aspects of our lives and are constantly being developed and created for new and novel uses. Many of the systems that have been developed don’t require fully functional general systems and instead rely on smaller embedded systems, which are small electronic systems that can operate on less power in more extreme environmental ranges. Embedded systems can vary from the relatively simple to the highly complex, but no matter how advanced they are, working with current systems or developing new ones is a difficult task. If you are looking to implement embedded systems into your business or project, or need to work with embedded systems that are already interacting with your business, then working with an embedded systems specialist is key to a successful operation.
Embedded systems specialists can hail from several different backgrounds, from engineers to computer scientists and electronics technicians. A freelance embedded systems specialist’s experience can come from working with microcontrollers or microprocessors found in a variety of systems, such as traffic lights, MP3 players, watches, and various avionic technologies. Embedded systems specialists can leverage this expertise to help you modify and optimize current embedded systems for your business needs and uses. Specialists can also help you find resources to train, design, or even create custom systems for your use or distribution. However you leverage the talents and skills of a freelance specialist, you can be comfortable knowing it will be an effective and powerful tool for you and your business.