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$45/hr
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$100K+ earned
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IoT Product Engineering | | Zephyr RTOS | LoRaWAN | LTE | Edge Gateways | Internet of Things (IoT) | Top IoT company | Embedded Systems | Embedded Linux | Firmware | Free RTOS | ESP32 | STM32 | nRF52 | UWB | BLE | Matter | Thread | AWS IoT | MQTT | Real Time Location System | 50+ projects
I help startups, enterprises, and product companies design, develop, and scale complete IoT solutions that are secure, reliable, and built for production.
With 15+ years of experience and 50+ successful IoT product deliveries, I specialize in Embedded Systems, Embedded Linux, Firmware Development, Industrial IoT, Edge Computing, AWS IoT, Full Stack Development, AI-powered IoT, and Cloud Integration.
Unlike developers who focus on only firmware or cloud, I build complete end-to-end IoT products covering hardware, embedded software, wireless connectivity, cloud infrastructure, dashboards, web applications, mobile apps, and device lifecycle management.
Whether you're building a Smart Home device, Industrial IoT platform, Medical Device, Wearable, Asset Tracking System, RTLS Platform, Smart Agriculture solution, Edge Gateway, or AI-enabled connected product, I can help bring it from concept to production.
Why Clients Hire Me
✔ 15+ Years in Embedded Systems & IoT
✔ 50+ Successful Product Deliveries
✔ End-to-End Product Engineering
✔ Hardware + Firmware + Cloud + Web + Mobile
✔ Production-Ready Architecture
✔ Secure OTA & Device Management
✔ Clear Communication & Long-Term Partnership
What I Build
✔ IoT Product Architecture
✔ Embedded Software Development
✔ Embedded Linux Platforms
✔ Industrial IoT Solutions
✔ Smart Home Products
✔ Connected Devices
✔ Wearables
✔ Medical Devices
✔ Asset Tracking Platforms
✔ Real-Time Location Systems (RTLS)
✔ Smart Agriculture
✔ Smart Buildings
✔ Fleet Management Solutions
✔ Industrial Automation
✔ Energy Monitoring Systems
✔ AI-powered IoT Platforms
Embedded Firmware Development:
✔ Embedded C
✔ C++
✔ Python
✔ Zephyr RTOS
✔ FreeRTOS
✔ Bare Metal Firmware
✔ Bootloader Development
✔ Secure Firmware
✔ OTA / FOTA Updates
✔ Low Power Optimization
✔ Sensor Fusion
✔ Multi-threaded Applications
✔ Device Drivers
✔ Production Firmware
Embedded Linux & Edge Computing:
✔ Yocto Project
✔ Buildroot
✔ OpenWrt
✔ Linux BSP
✔ Linux Kernel Customization
✔ Device Drivers
✔ Device Tree
✔ U-Boot
✔ Secure Boot
✔ Android Verified Boot (AVB)
✔ Root Filesystem Encryption
✔ dm-verity
✔ Mender OTA
✔ Docker
✔ Edge Computing
✔ Edge Gateways
✔ Raspberry Pi
✔ Intel NUC
✔ NVIDIA Jetson
✔ Rockchip
✔ NXP i.MX
Microcontrollers & Embedded Platforms:
✔ ESP32 Series
✔ STM32
✔ Nordic nRF52 / nRF53
✔ NXP
✔ Silicon Labs
✔ Microchip
✔ Raspberry Pi Pico
Wireless & Connectivity:
✔ Bluetooth Low Energy (BLE)
✔ BLE Mesh
✔ Wi-Fi
✔ Ethernet
✔ Thread
✔ Matter
✔ OpenThread
✔ Zigbee
✔ Z-Wave
✔ UWB
✔ LoRa
✔ LoRaWAN
✔ LTE
✔ LTE Cat-M
✔ NB-IoT
✔ GPS / GNSS
✔ MQTT
✔ CoAP
✔ TCP/IP
✔ Modbus
✔ CAN
✔ RS485
✔ UART
✔ SPI
✔ I2C
✔ USB
Secure IoT Architecture:
✔ Secure Boot
✔ Hardware Security Modules (ATECC608)
✔ TLS
✔ MQTT over TLS
✔ Certificate Management
✔ Device Authentication
✔ Secure Provisioning
✔ Encrypted Storage
✔ Secure OTA
✔ Device Lifecycle Management
Cloud IoT & Backend Development:
✔ AWS IoT Core
✔ Azure IoT Hub
✔ MQTT Brokers
✔ REST APIs
✔ Docker
✔ Kubernetes
✔ PostgreSQL
✔ InfluxDB
✔ Grafana
✔ Time-Series Databases
✔ Remote Device Management
✔ Fleet Management
✔ Edge Analytics
✔ Telemetry Pipelines
Full Stack & Mobile Development:
✔ React
✔ Next.js
✔ Node.js
✔ MERN Stack
✔ Flutter
✔ TypeScript
✔ Redux
✔ TanStack Query
✔ Responsive Dashboards
✔ Admin Portals
✔ Analytics Platforms
AI + IoT (AIoT):
✔ Predictive Maintenance
✔ Edge AI
✔ Computer Vision
✔ AI-powered Video Analytics
✔ Intelligent Alerts
✔ Sensor Data Analytics
✔ Machine Learning Models
✔ Digital Twin Platforms
✔ RAG-based Industrial AI Solutions
Industries Served:
✔ Industrial IoT (IIoT)
✔ Manufacturing
✔ Healthcare
✔ Smart Home
✔ Wearables
✔ Consumer Electronics
✔ Energy & Utilities
✔ Defense
✔ Logistics
✔ Automotive
Why My Approach Is Different:
Many developers specialize in only one part of the product—firmware, hardware, or cloud.
I bring all of these together.
From hardware architecture and embedded firmware to Embedded Linux, cloud infrastructure, mobile applications, dashboards, AI integration, and production deployment, I help companies build complete connected products that are scalable, secure, and production-ready.
I focus on long-term product success, maintainable architecture, reliable engineering, and clear communication—not just delivering code.
Let's Build Your Next IoT Product:
Whether you're building your first prototype or scaling an enterprise IoT platform handling thousands of connected devices, I can help you make the right architectural decisions from day one.
Message me with your product idea, technical challenges, or project requirements, and I'll help you define a clear, scalable roadmap to bring it to market.
Associated with
Krishworks Technology and Research Labs
$100K+
earned
United Kingdom
$65/hr
100%
Job Success
Available now
Start of list.
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"𝗘𝘃𝗲𝗿𝘆𝗼𝗻𝗲 𝗰𝗮𝗻 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗥𝗘𝗦𝗨𝗟𝗧𝗦 𝗯𝘂𝘁 𝗼𝗻𝗹𝘆 𝗮 𝗳𝗲𝘄 𝗰𝗮𝗻 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗦𝗔𝗧𝗜𝗦𝗙𝗔𝗖𝗧𝗜𝗢𝗡"
🔥 𝗧𝗼𝗽-𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 💪 𝗔𝗺𝗼𝗻𝗴 𝘁𝗵𝗲 𝘁𝗼𝗽 𝟯% 𝗼𝗳 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗲𝗿𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 |⭐𝟱 𝗦𝘁𝗮𝗿 𝗥𝗮𝘁𝗶𝗻𝗴 | 👍𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 |✔︎ 𝟱𝟭+ 𝗝𝗼𝗯𝘀 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲𝗱 | 💰𝗖𝗼𝘀𝘁 𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁
𝕀 ℂ𝔸ℕ ℙℝ𝕆𝕍𝕀𝔻𝔼 𝕐𝕆𝕌 𝔽𝕆𝕃𝕃𝕆𝕎𝕀ℕ𝔾 𝔼ℕ𝔾𝕀ℕ𝔼𝔼ℝ𝕀ℕ𝔾 𝕊𝔼ℝ𝕍𝕀ℂ𝔼𝕊 .
My design work has been for commercial customers, including several Fortune 500 firms.
I have strong grip on Firmware writing and Hardware designs.
Because of my 12 years experience, it is highly likely I've already worked with the technologies you need to make your project a success.
PRODUCT DEVELOPMENT
- Circuit Design and Schematic Capture
- Bills of Material and Part Sourcing
- Printed Circuit Board Layout and Manufacturing Data
- Assembly and Fabrication Drawings
- Prototyping
- Debug
- Product Testing
- Embedded Firmware and Application Software
• ESp32/ESP8266 programming using in ESP-IDF/ Arduino
• STM32 ARM M3 programming in Keil-MDK,STM32CUBE IDE and Micro C pro for ARM.
• Linux Programming for Raspberry Pi Programming for I/O read /Image processing.
• Nordic Semiconductor nFR series Wireless SoCs
• Amazon IOT core
• FreeRtos / MQXRTOS / Mongoose OS.
• Experience with LAN, TCP/IP, wifi, LORA, Bluetooth, BLE, RS232, I2C, SPI, RS485, MOD Bus, etc.
• Experience with Temperature ,Humidity, gyro, Accelerometer, Light, Sound, Power, CO2 and Medical sensors and many more
My lab is equipped with all the necessary hardware/firmware development equipment, including oscilloscopes, signal generators and analyzers, power supplies, and a myriad of other miscellaneous tools useful for debug and test.
To see some of the examples of my work, Please check out my project list.
Thank you,
Abu.
Associated with
Inventors tech Ltd
$14.99/hr
100%
Job Success
$20K+ earned
Available now
Start of list.
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7+ Years of Experience in design and development of Embedded Hardware and software in the domain of IOT having Problem Solving, Critical Thinking and Analytical Skills with ability to design and develop solutions to complex problems.By combining my professional experience with the ability to analyze, design and implement a wide range of advanced electronic systems (embedded and/or standalone) for both hardware and software.
I have gain expertise in the following fields with the passage of time.
========== Hardware Department ==========
- Embedded Programming and Hardware Designing
- Embedded Linux and C++
- PCB/Layout Designing
- Schematic/Circuit Designing
- ARM-Based Controllers and DSP
- Worked on Arduino, Xbee, Raspberry Pi, Udoo Boards, Orange Pi Development.
- Worked on Bluetooth, WiFi, and other RF Frequency Protocols.
- Layout Software: Altium Designer, Eagle CAD, KiCAD, Proteus, etc.
- GPS/GNSS Tracking. UMTS/GSM/LTE Designing.
- RFID and Fingerprint Circuit Designing.
- Designing Controller Boards (Texas Instrument, ST, Microchip, Atmel, etc ).
- PCB Wiring.
- 3D Step Model.
- Layout Designing.
========== Software Department ==========
- Android App Development
- Web Development
- Flutter App Development
- iOS Development.
- C# and C++
- E-Commerce ( Magento , Opencart , Woo-Commerce , Yii)
- API Integration
- Web Scrapping
Looking forward to your positive response. Your idea and my technical expertise, we both can create a positive mark in tomorrow's future.
✔I will provide solutions from low-level driver development to application development
✔ I offer one hour of free work to let you try and taste the quality. I would be glad to look into your project before we start. I will gladly try to help you with your projects.
Tags: 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, FPGA, SoC, VHDL, Verilog, Xilinx, Altera, VHDL, C, C++, MCU, RTOS, Microcontroller, prototype, validation, Enclosures, BMS, SolidWorks, Android, iOS, Java, Swift, Mobile Apps, Database, React, AWS, Python, ESP32, Arduino, PLATFORMIO, PIC, NXP, Texas Instrument, Nordic, DIALOG, STM32, LCD, Raspberry Pi, Robotics, Oil and Gas Automation, RF, XBEE, Wi-Fi, BLE, Production, Prototyping, LoRa WAN, Manufacturing, Assembly, Motor Driver, Prototype, Wireless Module, Flutter, Controllers, PLC, CREO, Industrial Designer, EASY EDA, KiCAD, Flutter App Development, AWS, IoT.
$50/hr
100%
Job Success
Available now
Offers consultations
Start of list.
End of list.
I help companies turn electronics ideas into real, production-ready products.
I am an Embedded Systems Engineer with 10+ years of experience designing hardware, developing firmware, and building connected IoT and Edge AI devices from concept to mass production.
I have worked with startups, research labs, and global organizations, including collaborations with Fortune 500 companies, The University of Bristol, and PGA of America.
I don’t just build circuits I build complete products that are reliable, scalable, and ready for manufacturing.
What I do end-to-end
• System architecture and product definition
• PCB design and hardware engineering
• Firmware development and optimization
• Edge AI integration (TinyML, on-device inference)
• Wireless connectivity and IoT cloud integration
• Mechanical design (enclosure + DFM-ready CAD)
• Prototype development and production support
I regularly take products from idea to prototype to production-ready hardware.
---
Core expertise
Embedded hardware development
• ESP32
• Nordic (nRF51, nRF52, nRF91)
• STM32, STM8
• Raspberry Pi platforms
• NXP, Snapdragon, BeagleBone
• NVIDIA Jetson AGX Orin
• Google Coral Edge TPU
• Axelera Metis AI Platform
• EdgeCortix SAKURA
• ARM Cortex controllers
• Texas Instruments MSP and CC series
• Atmel AVR and Arduino
I design reliable embedded systems used in IoT devices, industrial equipment, wireless products, and research hardware.
---
PCB design and hardware engineering
Tools
• Altium Designer
• KiCad
• EagleCAD
• OrCAD
Services
• Schematic design
• Multilayer PCB layout
• High-speed PCB design
• RF and wireless board design
• Design for manufacturing (DFM, DFA)
• BOM optimization and cost reduction
• Production-ready manufacturing files
---
Firmware development
• Embedded C and C++
• FreeRTOS
• Embedded Linux
• Driver and low-level development
• Low-power firmware optimization
---
Edge AI
• TinyML and on-device AI models
• Sensor data processing and inference at the edge
• ESP32 / ARM-based AI deployment
• Reducing cloud dependency with real-time intelligence
• AI-enabled IoT product design
---
Communication and connectivity
• Bluetooth, BLE, BLE 5
• WiFi
• LoRa, LoRaWAN
• NB-IoT
• Thread, Zigbee
• NFC, RFID
• CAN
• UART, SPI, I2C, USB, Ethernet
Cloud and protocols
• MQTT
• HTTP
• AWS IoT, AWS Lambda and cloud integration
---
Mechanical design
• Enclosure design for embedded products
• 3D CAD modeling (production-ready)
• Thermal and space optimization
• Design aligned with PCB and manufacturing constraints
• Support for injection molding and prototyping
---
IoT product experience
• EdgeAI Device for ATM
• High-Speed Autonomous Surveillance Drone (350–400 km/h)
• AI Personal Assistant
• Smart Home Automation Systems
• Wireless IoT Sensors
• Industrial Monitoring Systems
• GPS and Tracking Devices
• Medical and Research Hardware
• Automation Controllers
• Cloud-connected Embedded Devices
---
What I deliver
• Production-ready PCB designs
• Stable, optimized firmware
• Functional hardware prototypes
• Edge AI-enabled intelligent devices
• Hardware debugging and performance optimization
• Complete manufacturing support and documentation
---
Client feedback
“Bhavin is such a fantastic developer to work with. He was professional and handled all modifications seamlessly. He also immersed himself in the problem and provided unique solutions to the hardware and software challenges.”
“I would happily employ Bhavin again. He is extremely efficient, works very fast, and communicates very well. The product was delivered on time and worked perfectly.”
---
If you are building a new hardware product, IoT device, or Edge AI system, feel free to reach out to discuss your project.
Best regards
Bhavin Vaghela
$70/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
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🎯 I'm a Mechatronics and Robotics Engineer who combines Mechanical Engineering, Electronic Engineering, Embedded Systems and Software Development to drive efficient, holistic end to end development fast. My approach combines strong theoretical foundations with hands-on project experience, ensuring robust, efficient, and well-documented solutions are delivered.
☎️ Contact me for a ꜰʀᴇᴇ ᴠɪᴅᴇᴏ ᴄᴀʟʟ to discuss your project.
Core Expertise:
🔵 Mechanical Engineering & CAD
🟣 Electronics & PCB Design
🟠 Robotics & Mechatronics
🟢 Embedded Systems
What Makes Me Different
✔️ Multi-disciplinary - mechanical + electronics + firmware as one system
✔️ UK Ltd with regulated PII insurance
✔️ Top Rated Plus, 100% JSS across 50 contracts
✔️ Discrete specialist work welcome
I operate through H. Nanda Engineering Solutions Ltd, a UK-registered limited company. The company maintains UK-regulated professional indemnity insurance, providing clients with the reassurance that all projects are delivered with professionalism, accountability, and to a high standard
🔒 TOOLS, PLATFORMS & CAPABILITIES:
Mechanical Engineering, CAD, Fusion 360, SolidWorks, enclosure design, mechanism design, sheet metal, DFM, DFA, 3D printing, injection-mould-ready parts, Electronics, Custom PCB Design, Schematic and layout, mixed-signal PCB, multilayer boards, sensor electronics, power electronics, motor driver circuits, EMC, KiCad, Altium Designer, Embedded Systems, Firmware, STM32, ESP32, Arduino, ARM Cortex, embedded C, C++, MicroPython, RTOS, BLE, Wi-Fi, LoRa, MQTT, CAN bus, I2C, SPI, UART, low-power design, OTA updates, Robotics, Mechatronics, ROS, ROS2, Gazebo, SLAM, Nav2, MoveIt, LiDAR, IMU, sensor fusion, computer vision, manipulator and gripper design, AGV, AMR, cobot integration, industrial automation, Industry 4.0, Control Systems, Simulation, MATLAB, Simulink, Unreal Engine, dynamic modelling, PID, LQR, state-space, MPC, motor control (BLDC, stepper, servo), digital twin, model-based design, IoT, Connected Hardware, End-to-end IoT product builds, telemetry, smart sensors, companion apps, web dashboards, edge devices on Raspberry Pi and NVIDIA Jetson, AI in Hardware, Edge AI on STM32 and Jetson, computer vision on devices, perception for robotics, TensorFlow, PyTorch, OpenCV.
Associated with
Norelith
$60/hr
100%
Job Success
$40K+ earned
Available now
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Welcome!
I am Kiran, PCB Designer & Embedded Firmware Developer with 20+ years of experience, 35+ products shipped from concept to mass manufacturing across industrial, automotive, medical, IoT,
and consumer electronics. 100% Job Success Score, Top Rated Plus.
MTech (E&TC), Symbiosis International University | BEng (Electronic Engineering), Shivaji University.
Most hardware projects fail due to poor EMI/EMC compliance, memory leaks, or unoptimized DFM/DFT. I solve this by engineering robust ecosystems and bridging the gap between reliable hardware physics and memory optimized RTOS firmware. Instead of managing multiple disconnected freelancers, you can rely on me to own the full product pipeline from initial schematic architecture to final mass manufacturing.
📌 Hardware Architecture & PCB Design
As a Senior PCB Designer, I natively use KiCad (versions 8–10) and Altium Designer to engineer multi-layer, high-speed, and mixed-signal boards. I handle the complete hardware lifecycle, integrating critical protections like 12V automotive TVS surge clamping, reverse polarity protection, and complex EMI/EMC shielding. Whether you need a flex-PCB for a medical wearable or a rigid board for an industrial controller, my layouts guarantee strict IPC-2221 compliance and flawless Pick-and-Place (CPL) alignment for JLCPCB and mass assembly.
📌 Embedded Firmware & RTOS Development
As a Firmware Engineer, I write secure, hardware-optimized Embedded C/C++ code for ARM Cortex-M (STM32, NXP), ESP32, and nRF52 microcontrollers, as well as Embedded Linux systems (Raspberry Pi, Yocto, Debian). I architect highly stable software using FreeRTOS and Zephyr RTOS. My firmware track record includes deploying secure dual-bank OTA (Over-The-Air) updates, integrating Edge AI (TinyML), and tuning real-time wireless stacks (BLE, Wi-Fi, LoRaWAN, Cellular NB-IoT) without ever bottlenecking the scheduler.
📌 Industrial IoT & Sensor Integration
I seamlessly integrate high-precision components—IMUs, CMOS image sensors, biopotentials, load cells, and BLDC/Stepper motor drivers—into highly constrained physical envelopes. I ensure that industrial communication interfaces like SPI, I2C, CAN bus (SAE-J1939), RS485, and Modbus TCP operate synchronously and fault-free.
Core Services & Deliverables:
📌 Full Product Pipeline Ownership (Concept to Mass Production)
📌 End-to-End Hardware Architecture & Schematic Design
📌 PCB Layout & Routing (KiCad, Altium, EasyEDA)
📌 DFM/DFT Optimization for Mass Manufacturing (PCBA)
📌 Embedded C/C++ Firmware (FreeRTOS, Zephyr, ESP-IDF)
📌 Embedded Linux & Audio DSP (ALSA, PipeWire)
📌 IoT Cloud Connectivity (MQTT, AWS IoT, HTTPS)
📌 Hardware Bring-Up, Debugging & Power Supply Design
Why Work With Me?
Single Point of Accountability: I can take complete ownership of your full product pipeline, eliminating the massive friction of managing separate hardware and software teams. I respect your intellectual property (IP) and strictly safeguard your hardware designs, schematics, and source code. I communicate transparently and deliver on time.
Ready to start?
Click "Invite to Job", book a Consultation on my profile, or send me a message detailing your product vision, physical constraints, or current hardware bugs.
I will respond within 4 hours with an initial technical assessment and approach.
Associated with
Intellore Systems Private Limited
$80K+
earned
$32/hr
100%
Job Success
$200K+ earned
Start of list.
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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.
$27/hr
94%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
End of list.
Huzaifa A.
has worked
.
Top Rated Plus Embedded Hardware & Firmware Engineer with 15+ years of experience building reliable embedded products, IoT systems, and production-ready electronics.
I help startups, product teams, and manufacturers take an idea, prototype, or broken design and turn it into a working embedded product that can be tested, manufactured, and scaled.
My work connects hardware, firmware, and real-world product execution. Instead of treating the circuit, code, sensors, connectivity, power system, enclosure, and manufacturing process as separate pieces, I help bring them together into one reliable product.
WHAT I BUILD
• Custom schematic and PCB design for reliable embedded hardware
• Embedded firmware development in C/C++ for real-world products
• ESP32, STM32, Nordic, Arduino, Raspberry Pi, and Embedded Linux platforms
• BLE, Wi-Fi, LTE, Cat-M1, NB-IoT, LoRa, NFC, GPS/GNSS, and sensor integration
• Low-power electronics, battery-powered devices, BMS, and power management
• Industrial interfaces including UART, SPI, I2C, RS-485, CAN, Modbus, ADC/DAC, and GPIO
• Board bring-up, debugging, firmware validation, and hardware troubleshooting
• BOM preparation, Gerber files, assembly files, DFM review, and manufacturing support
I have worked across wireless IoT devices, wearable and medical electronics, industrial monitoring systems, automation hardware, smart sensors, connected consumer products, and custom embedded controllers.
WHY ONE TECHNICAL OWNER
Clients usually come to me when they need more than a schematic or a firmware file. They need someone who can understand the complete system, identify risks early, solve hardware and firmware integration issues, and move the product closer to production.
I also lead a full-service engineering team when projects require additional support across mechanical enclosure design, cloud integration, mobile app development, product design, or manufacturing coordination. This gives clients one technical owner while keeping the embedded hardware and firmware work technically grounded.
READY TO BUILD?
Send me your requirements, target platform, connectivity needs, power constraints, current design files, and production volume. I’ll respond with a clear technical scope within 24 hours.
Warm Regards,
Huzaifa Ali
Associated with
eSpark Consulting Group
$300K+
earned
$20/hr
100%
Job Success
$20K+ earned
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My name is Atta-ur-Rehman, a Senior Embedded System and PCB Design Specialist.
Experience
• 14 years of total experience, with a focus on Embedded systems Firmware development and PCB design since 2011.
• Extensive work with international clients on diverse industrial products .
• Extensive work with Multinational companies as a Remote firmware and PCB designer.
Skills
• Programming languages: C, C++, Python, Assembly.
• Microcontrollers: Arduino, STM32, PIC , AVR , ARM M series, ESP32, ESP8266
• Single Board Computers : Raspberry pi (all models ), Orange pi (all models ) ,
• Compilers : Keil MDK arm , ESP-IDF , Mplab , MikroC , Eclipse , arduino , STM32 Cube ide .
• Communication protocols: USART, SPI, I2C, Ethernet, Wi-Fi , Modbus , CAN , BLE , OBD .
• Operating Systems: Embedded Linux, FreeRTOS ,Windows
• Design tools: Expert in EDA tools like Altium, Eagle, KiCad, and simulation tools like SPICE or SPICE-like tools.
• Cloud platforms: AWS IoT, Google Cloud IoT, Microsoft Azure IoT.
• Cybersecurity: Knowledge of security principles and best practices for embedded systems.
• Version control: Proficiency with Git, SVN, or other version control systems.
Career Highlights
• Developed innovative solutions for automotive, Avionics , communication ,power , healthcare, and consumer electronics sectors.
• Successfully managed and delivered multiple high-impact projects, exceeding client expectations.
$114.58/hr
100%
Job Success
$300K+ earned
Available now
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Can I get the job done?...... Short Answer:
- $MM in revenue, raised capital, or B2B sales
- Long client relationships that persist even after the initial scope of the project is over
- In house production facilities (PCB assembly, SLA printing, CNC Machining) which cut your lead time from weeks to just days
- A singular goal: Get your MVP in 3 months or less
Does that answer your question? If not here's the long version:
Hi I'm Deolu. I'm a hardware and software engineer who has experience creating and launching products for small to large companies alike. Whether it's creating a mobile or web application, developing your hardware product, or deploying cloud services, I'll do the work of multiple employees and companies while keeping your time-to-market short and your worries low. Think of me as an extension of your team and like your very own tool-belt. Since I'm versed in multiple fields, I can fit in wherever you need, while delivering quality results.
* Web Technologies and Languages: HTML/CSS/JavaScript, NodeJS, ReactJS
*Core programming languages: Python, C/C++
*Hardware Tools/Software: Altium Designer, KiCad, Eagle, Fusion360, Blender
*Great communication and regular updates (will always give you a time-line upfront)
*Experience working with early stage startups as well as established companies
* In house production and prototyping equipment (PCBA, CNC Machining, SLA Printing)
I'm your personal tool-belt. Point me in the direction of your business problem, and I'll get to work making it go away.