PCB Designer and Embedded Hardware Engineer specializing in ESP32, STM32, and IoT product development. I design manufacturable PCBs using Altium, KiCad, and EasyEDA with full JLCPCB production support.
I help clients turn circuit ideas into reliable, production ready hardware including schematic design, PCB layout, prototyping, and debugging.
What I do
• PCB design for ESP32, STM32, Arduino based systems
• Schematic design and multilayer PCB layout in Altium and KiCad
• IoT hardware design with sensors, power management, and connectivity
• Firmware support for STM32 and ESP32 (Arduino framework, HAL basics)
• Design for manufacturing and JLCPCB ready Gerbers
• Hardware debugging and prototype improvement
Tools I use
Altium Designer, KiCad, EasyEDA, Fusion 360, SolidWorks, AutoCAD
Why clients hire me
I focus on practical engineering, not just design files. I ensure your PCB works in real hardware, is easy to manufacture, and is optimized for cost and reliability.
If you are building an IoT product, embedded system, or custom PCB, I can help you go from concept to working prototype efficiently.
Microcontroller Design
Microcontroller Programming
Microcontroller
PCB Design
Arduino
Printed Circuit Board
ESP32
EasyEDA
KiCad
Multilayer PCB
CAD Software
Arduino IDE
Prototype Design
Altium Designer
Embedded System
Hammad S.
Jhelum, Pakistan
$20/hr
5.0
21 jobs
I have designed 30+ real-world components used in defence systems, DC fans, and kitchen appliances handling everything from design and simulation to fabrication and testing myself, so you get complete, working hardware solutions from one expert.
I am an RF, PCB, and Embedded Systems Engineer with strong hands-on experience in building complete hardware products. I have worked on real-world RF systems including high-power amplifiers, transmitter-receiver designs, RF filters, and antenna systems for communication and defence-related applications. I specialize in RF design, antenna design and testing, wireless communication, and high-quality PCB design including multilayer boards using Altium Designer and KiCad. I also work on circuit design, analog electronics, RF filters and amplifiers, and embedded systems using STM32, ESP32, and Arduino. I have successfully delivered reliable, tested, and production-ready designs that perform well in real-world conditions.
For large and challenging projects, I collaborate with a trusted team of highly skilled professionals, so we can deliver a complete, fully working product including hardware, software, and mechanical design all in one place.
✅ RF & Microwave Circuit Design
✅ RF System Design (Transmitter & Receiver)
✅ RF Front-End Design
✅ RF Power Amplifier Design (Low, Medium & High Power)
✅ LNA (Low Noise Amplifier) Design
✅ RF Filters Design (Bandpass, Low-pass, High-pass)
✅ Impedance Matching & RF Tuning
✅ Antenna Design (Patch, Monopole, Dipole, Custom)
✅ Antenna Simulation & Optimization
✅ Antenna Testing & Performance Measurement
✅ Wireless Communication System Design
✅ RF Signal Chain Development
✅ Frequency Planning & Spectrum Analysis
✅ PCB Design (Single Layer, Double Layer, Multilayer)
✅ High-Speed PCB Design
✅ RF PCB Layout & Controlled Impedance Design
✅ Schematic Design & Circuit Layout
✅ PCB Design using Altium Designer, KiCad & EasyEDA
✅ Gerber File Generation & Manufacturing Support
✅ Design for Manufacturing (DFM) & Assembly (DFA)
✅ PCB Debugging & Optimization
✅ Electronic Circuit Design
✅ Analog Circuit Design
✅ Amplifiers & Signal Conditioning Circuits
✅ Sensor Interface Circuit Design
✅ Power Electronics Circuit Design
✅ Hardware Troubleshooting & Debugging
✅ Embedded Systems Design
✅ Embedded Hardware Development
✅ Microcontroller-Based System Design
✅ Microcontroller Programming (STM32, ESP32, Arduino, AVR)
✅ Embedded C & C++ Development
✅ Firmware Development
✅ IoT Device Development (WiFi, LoRa, ESP32)
✅ Raspberry Pi-Based Projects
✅ FPGA Design & Development
✅ Verilog / VHDL Based Design
✅ Digital System Design on FPGA
✅ Simulation & Timing Analysis
✅ FPGA Prototyping & Testing
✅ Electromagnetic Simulation (HFSS, CST, ADS)
✅ Circuit Simulation (LTspice, PSPICE, MATLAB)
✅ EM & RF Co-Simulation
✅ Signal Integrity & EMI/EMC Analysis
✅ Hardware Prototyping
✅ Product Development from Concept to Prototype
✅ Functional Testing & Validation
✅ Performance Measurement & Optimization
✅ Test Results Analysis & Reporting
✅ Technical Writing (Engineering Reports & Documentation)
✅ Research Paper Writing (IEEE Format)
✅ Project Documentation & Reports
✅ RF & Electronics Content Writing
✅ Complete Product Design (Hardware + Embedded + RF + FPGA)
✅ Prototype to Production Support
✅ Real-World Testing & Field Validation
✅ Engineering Simulation & Optimization
RF Design
Antenna Design
Antenna Testing
PCB Design
Multilayer PCB
Altium Designer
KiCad
Embedded System
FPGA
STM32
ESP32
Hardware Design
Electromagnetic Simulation Software
RFID
Eagle
Electrical Engineering
Digital Electronics
Arduino
Raja A.
Islamabad, Pakistan
$20/hr
5.0
2 jobs
Electrical Engineer specializing in end-to-end hardware development, from power systems to embedded RF applications. I transform concepts into manufacturing-ready PCBs, handling everything from schematic capture to multi-layer routing, DFM handoffs, and 3D enclosure integration.
Core Expertise:
PCB & Hardware Design: Altium Designer, KiCad, EasyEDA
Power Systems & Industrial Control: Load flow studies, symmetrical component fault analysis, and robust industrial control panel design (including RO/UV systems).
Embedded & RF Prototyping: ESP32, STM32, IoT mesh networks, and antenna/RF layout optimization for wireless communications.
Simulation & Validation: PSpice, Proteus, LTspice
Services I Offer:
Schematic Capture & Conceptual Circuit Design
Multi-layer PCB Layout, Routing, & Component Selection
Gerber Generation, BOM Management, & Manufacturing Handoff
Fault Analysis & Power System Optimization
Hardware Testing & Technical Troubleshooting
Whether you need a rigorous industrial control board, complex power calculations, or a rapid IoT prototype with strict RF constraints, I deliver robust, fully tested designs optimized for manufacturing. Let's bring your hardware project to life.
Microcontroller
Altium Designer
KiCad
EasyEDA
Proteus Design Suite
PCB Design
Circuit Design
Schematic Capture
Hardware Prototyping
Embedded System
Hardware Design
Electronics
PSPICE
Electrical Engineering
Printed Circuit Board
Internet of Things
Firmware
RF Design
Design for Manufacturing
Power System
Inam U.
Rawalpindi, Pakistan
$15/hr
4.9
106 jobs
I’m an experienced Embedded Systems and Electronics Engineer with a strong background in PCB design, firmware development, and product prototyping. I specialize in building reliable, cost-effective IoT and consumer electronics hardware, from concept to production.
🔧 Core Skills & Platforms
PCB Design & Hardware Engineering
• Tools:
Altium Designer, KiCad, EasyEDA and Eagle Cad
• Capabilities:
o Electronics circuit Schematics Desinging
o Rigid and flex PCBs
o Experience with flex/FPC PCBs, High Speed and high-current and RF layout
o EMI/ESD protection, ground plane optimization, RF shielding techniques
o BOM preparation and cost-effective component sourcing
o Reverse engineering of hardware/firmware for legacy or competing products
o In-house prototyping, testing, troubleshooting, and validation
• Microcontrollers:
o ESP32 (including S2, S3, C3 and all other variants)
o STM32 (F0/F1/F4 series)
o nRF52/nRF5340 (Nordic BLE SoCs)
o ATmega/ATtiny series (AVR family)
o Raspberry Pi (Zero, 3, 4, CM4)
• Communication Protocols:
o UART Communication
o I2C communication
o I2S communication
o SPI Communication
o Can Bus Communication
o Mod Bus Communication
o WIFI-Communication
o Bluetooth Communication
o RF Communications
• Wireless Hardware Skills:
o Cellular (GSM/LTE/NB-IoT): Quectel (e.g., EC200U, BG95), SIMCOM (e.g., SIM800, SIM7678SA, SIM7600) – applied in vehicle tracking systems with GPS and cloud integration.
o LoRa: EBYTE E22/E32 modules for motion tracking in local mesh networks up to 5KM.
o Wi-Fi/Bluetooth: Advanced development with ESP32 for WIFI-Meshing, Wi-Fi sniffing, BLE advertising, and geofencing applications.
o Optical Communication: Long-range MCU-to-MCU communication using modulated IR/LED systems for reliable data transfer in isolated environments.
________________________________________
🧠 Sensor Integration & Interfaces
• Motion & Environmental:
o Accelerometers (LIS3DH, MPU6050), gyroscopes, and ultrasonic sensors for obstacle detection, fall detection, and gesture control.
o IR sensors, flame sensors, and ultrasonic modules for object detection and safety systems.
o Humidity, pressure, smoke, gas, and temperature sensor for environmental control.
• Biometric & Weight Measurement:
o Fingerprint modules (R502, AS608), optical pulse sensors (MAX30100/30102)
o Load cells with HX711 for weight measurement
• Optical communication:
o Light sensors, photoresistors, and optical data transmission between MCUs over long-range using custom protocols
________________________________________
⚡ Power System Design
• Battery Management:
o Lithium-ion/polymer charging circuits with fuel gauges
o Low-power modes, deep sleep implementation, and wake-on-interrupt designs
o Priority-based power distribution for shared charging between multiple devices
• DC/DC Converters & Power Paths:
o Buck, boost, and buck-boost converters for 12,9V, 5V, 3.3V, and custom rails
o Reverse polarity protection, TVS diodes, inrush current limiting
________________________________________
🔌 USB Hub Development
• USB 2.0 and 3.1 Hub Designs:
o High-speed routing with proper impedance matching
o Switchable data lines for host/device switching
o USB-PD charging with smart current limiting and role negotiation
o USB power control with load switches and fault detection
🧩 One-Stop Hardware Solution
I offer a complete hardware development service, including:
• Component selection and sourcing from trusted Chinese and global vendors
• BOM optimization for cost and lead time
• Ordering PCB & PCBA from vetted manufacturers with fast turnaround
• Testing, QA, and verification of assembled hardware
• Troubleshooting & field debugging
• Firmware reverse engineering and porting
________________________________________
If you're looking for a highly versatile embedded systems expert with hands-on experience in both firmware and hardware — from an idea to working Product — I'm ready to support your product from prototype to production.
Microcontroller Programming
Analog Electronics
KiCad
Internet of Things
Electronics
Altium Designer
ESP8266
ESP32
Android App
PCB Design
Hardware Prototyping
Arduino
EasyEDA
Electronic Circuit Design
Python
Aizaz U.
Islamabad, Pakistan
$13/hr
5.0
9 jobs
Delivered 𝟱𝟬+ embedded & IoT systems with 𝟵𝟵% reliability, reduced power consumption up to 𝟲𝟬%, improved wireless range up to 𝟱𝗸𝗺, and achieved production-ready PCB success for industrial, RF, and sensor-based real-world deployments.
➤ 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
✔ Embedded hardware design
✔ PCB design (multilayer, RF, power systems)
✔ Firmware development (real-time & low power)
✔ IoT system architecture
✔ Wireless communication systems
➤ 𝗦𝗞𝗜𝗟𝗟𝗦
✔ ESP32, STM32, nRF52, nRF53, Raspberry Pi
✔ C / C++ / Embedded C
✔ FreeRTOS, Zephyr
✔ BLE, WiFi, LoRa, LTE-M
✔ MQTT, AWS IoT, HTTP/HTTPS
✔ Altium Designer, KiCad, EasyEDA
✔ Power electronics & signal integrity
➤ 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦
✔ PCB schematic & layout design
✔ Embedded firmware development
✔ IoT device development
✔ Sensor integration systems
✔ Wireless & cloud connectivity
✔ Prototype to production support
➤ 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘
✔ 5+ years in embedded systems & IoT product development
✔ Delivered industrial controllers, RF systems, sensor nodes, and wireless IoT devices
✔ Experience in full product lifecycle from design to deployment
➤ 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗬 / 𝗗𝗢𝗠𝗔𝗜𝗡
✔ IoT & Smart Devices
✔ Wearables Devices
✔ Industrial Automation
✔ RF & Wireless Systems
✔ Embedded Control Systems
✔ Sensor & Monitoring Systems
➤ 𝗧𝗢𝗢𝗟𝗦
✔ Altium Designer
✔ KiCad
✔ EasyEDA
✔ STM32CubeIDE
✔ ESP-IDF
✔ PlatformIO
✔ If you want a reliable embedded system or IoT product that actually works in real-world conditions, message me and let’s build your solution today.
➤ 𝗞𝗘𝗬𝗪𝗢𝗥𝗗𝗦
Embedded Systems, ESP32, STM32, PCB Design, Firmware Development, IoT, BLE, WiFi, LoRa, LTE-M, MQTT, AWS IoT, C, Embedded C, C++, FreeRTOS, Zephyr, RF Design, Power Electronics, Multilayer PCB, Altium Designer, KiCad, EasyEDA, Sensor Systems, Industrial Automation, Wireless Systems, Low Power Design, Hardware Design, Circuit Design, Design for Manufacturing (DFM), Embedded Firmware, Microcontrollers, Smart Devices, PCB Layout, Signal Integrity, Embedded Linux, OTA Updates, IoT Cloud, Prototype Development, Electronics Design, Product Engineering, Electrical Engineer, Electrical Engineering, Electronics, Hardware, Firmware, PCB, PCB layout, Board Layout, Schematics, Altium Designer, IoT, Internet of Things, Power Electronics, Bluetooth, BLE, TI, Texas Instruments, MCU, RTOS, Microcontroller, prototype, Flex PCB, FPGA, Rockchip, validation, Enclosures, Nordic, BMS, AWS, Python, ESP32, Cellular, IMU, Arduino, PLATFORMIO, PIC, NXP, Texas Instrument, Nordic, DIALOG, STM32, nRF5340, LCD, Wearable Technology, Raspberry Pi, Robotics, RF, XBEE, Wi-Fi, BLE, GPS, Adafruit, Production, Prototyping, LoRa WAN, Manufacturing, Assembly, Motor Driver, Prototype, Wireless Module, JLCPCB, Controllers, PLC, EASY EDA, KiCAD. Wearable device, medical devices, complience, Modbus TCP/IP, HMI, LVGL, Electronics Design, CAN, Eagle
Microcontroller Programming
PCB Design
Embedded System
Firmware
Altium Designer
KiCad
Multilayer PCB
Circuit Design
Embedded C
ESP32
STM32
nRF52
Zephyr
Arduino
Electrical Engineering
Electronics
Arduino Firmware
Internet of Things Solutions Design
C++
EasyEDA
Nadeem A.
Layyah, Pakistan
$25/hr
4.7
29 jobs
I’m a highly skilled and detail-oriented PCB Design Engineer with over 3 years of experience in designing robust, efficient, and cost-effective printed circuit boards for various industries including consumer electronics, automotive, medical devices, and industrial automation.
I specialize in converting complex circuit ideas into manufacturable and reliable PCB layouts. From schematic capture to final Gerber generation and fabrication-ready documentation, I ensure every step is precise and optimized for performance and manufacturability.
🔹My Expertise Includes:
* PCB Design (2 to 16+ Layers)
* Schematic Capture & Hardware Architecture
* Embedded Hardware Design (STM32, ESP32, Nordic nRF, AVR, PIC)
* Analog, Digital & Mixed-Signal Circuit Design
* High-Speed PCB Design (USB, Ethernet, HDMI, DDR, PCIe)
* RF PCB Design & Impedance Controlled Routing
* Power Supply Design (Buck, Boost, LDO, Battery Management)
* AC-DC & DC-DC Power Electronics
* IoT Device Development
* Sensor Interface Design
* Industrial Control Electronics
* Signal Integrity & Power Integrity
* EMI/EMC Optimization
* Thermal Management
* High Current PCB Design
* Differential Pair Routing
* Controlled Impedance Design
* Design for Manufacturing (DFM)
* Design for Assembly (DFA)
* Component Selection & Lifecycle Management
* Prototype Development & Manufacturing Support
🔹PCB Design Services
*Electronic Product Development
*Circuit Design & Schematic Capture
*PCB Layout & Routing
*Hardware Design Review
*Existing PCB Modification
*Reverse Engineering
*PCB Migration Between CAD Tools
*Cost Optimization & BOM Engineering
*Manufacturing Documentation
*Prototype Validation Support
🔹Tools I Use:
* Altium Designer
* KiCad
* Eagle
* OrCAD / Cadence Allegro
* EasyEDA
* LTspice / PSpice / Multisim (for simulation)
* AutoDesk Fusion 360 (for 3D enclosure fit checks)
🔹Deliverables You Can Expect:
* Complete schematic and PCB layout files
* BOM (Bill of Materials)
* Gerber, drill, and pick-and-place files
* 3D PCB renders
* Assembly drawings and fabrication documentation
* Technical support during prototype and production phases
🔹Industries
*Industrial Automation
*Consumer Electronics
*IoT Products
*Medical Electronics
*Automotive Electronics
*Smart Home Devices
*Wearable Electronics
*Power Electronics
*Robotics
*Communication Systems
🔹Why Choose Me?
✅ 100% custom and tailored designs
✅ Fast turnaround and clear communication
✅ Focus on reliability, quality, and cost optimization
✅ NDA-friendly and IP protection guaranteed
Whether you're developing a new electronic product, improving an existing design, or preparing hardware for manufacturing, I can help transform your concept into a reliable, high-quality, production-ready PCB solution.
PCB Design
Multilayer PCB
KiCad
Altium Designer
EasyEDA
FPGA
Electrical Design
Electrical Engineering
Electronics
Digital Electronics
Circuit Design
Schema Diagram
Firmware Programming
ESP32
Embedded C
Power Electronics
STM32
Product Development
Design for Manufacturing
Hardware Design
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