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$45/hr
100%
Job Success
$20K+ earned
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# Hardware & Software Engineer | Embedded Systems & PCB Design
I design custom PCBs and develop embedded software for production-ready hardware solutions.
Core Competencies
- Embedded Systems Development
- PCB Design and Hardware Integration
- Linux Kernel and Device Driver Development
- Mobile and Web Application Development
- Industrial IoT and Automation Systems
Technical Skills
Languages: C/C++, Python
Frameworks: STM32 HAL, ESP-IDF, Qt, TouchGFX, LVGL
Hardware Design: Altium Designer, KiCad, Fusion 360, Orcad
Microcontrollers: STM32, ESP32, RP2040, nRF52, NXP i.MX RT series
Microprocessors: NXP i.MX8-9, Rockchip (RV1126, RK3588), Allwinner T/A Series
Communication: RS485, RS422, CAN/CAN FD, SPI, I2C, Modbus, Ethernet, WiFi, Bluetooth
Embedded Linux: Buildroot, Yocto, device drivers, kernel customization
OS: FreeRTOS, Zephyr
High-Speed Design: SGMII, RGMII, LVDS, PCIe, LPDDR4/DDR4, LPDDR3/DDR3 routing
Mobile/Web: Android, iOS app development, web dashboards for hardware control
Specialized Knowledge
- Multi-layer PCB design (1-18 layers) with signal integrity analysis
- Embedded Linux root file systems and video streaming
- Industrial automation and IoT gateway development
- OTA updates and remote device management
- Cross-platform application development for embedded devices
-Mass production, DFM optimization
3+ years experience delivering complete hardware-software solutions from concept to production.
$50/hr
100%
Job Success
$6K+ earned
Offers consultations
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Vishwajeet S.
has worked
.
If you're building a connected IOT product and need someone who can own the full stack - from device firmware to cloud infrastructure, I can help.
Over the past 6+ years, I’ve designed and shipped IoT systems running on 50,000+ deployed devices across energy, surveillance, and industrial sectors.
What I Build
• Embedded firmware for microcontrollers and embedded Linux devices
• Edge AI and ML inference on Jetson platforms
• Device communication and networking
• Cloud infrastructure and telemetry pipelines
• Real-time monitoring dashboards and analytics
Systems I’ve Delivered
• DLMS firmware for smart energy meters deployed on 50,000+ devices
• Peak shaving control firmware for 2,000+ solar inverters
• Firmware and system software for 2,500+ Jetson Nano surveillance systems connected to 8,000+ cameras
Technologies I Work With
Embedded
C/C++, Embedded Linux, FreeRTOS
Backend & Cloud
Golang, Python, Django, Node.js, AWS IoT, MQTT
Edge AI
Jetson platforms, ML inference, video analytics
Communication Protocols
DLMS, CAN, SPI, I2C, UART, ZigBee, LoRaWAN, WiFi, Bluetooth
Applications
Flutter, web dashboards
PCB Design
Altium, KiCad, Eagle CAD
If you have a hardware product to ship or a device system that needs to scale to thousands of devices, send me a message with what you’re building.
Associated with
Flonant Systems
$1K+
earned
$60/hr
100%
Job Success
$1K+ earned
Offers consultations
Start of list.
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I design and build real hardware systems, not just firmware.
I’m an electronics engineer with 3+ years of hands-on experience in embedded systems, PCB design, and full hardware integration, with over 80 completed projects across IoT, wearables, RF systems, and high-performance embedded platforms.
I work on projects where hardware actually has to function in the real world, dealing with power, noise, thermals, wireless reliability, and system-level integration.
𝐈 𝐡𝐞𝐥𝐩 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐠𝐨 𝐟𝐫𝐨𝐦 𝐢𝐝𝐞𝐚 𝐭𝐨 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐡𝐚𝐫𝐝𝐰𝐚𝐫𝐞 𝐭𝐨 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐝𝐞𝐬𝐢𝐠𝐧 𝐭𝐨 𝐌𝐕𝐏.
Core expertise:
-Embedded firmware (ESP32, nRF52, STM32)
-Custom PCB design (2–32 layers, mixed signal, high-speed)
-IoT systems (Wi-Fi, BLE, LTE/5G integration)
-Sensor systems (IMU, GPS, ADCs, RF frontends)
-Power design (battery systems, 12V/24V industrial input, regulators)
-Signal integrity, EMI/EMC-aware layout
-Hardware + enclosure integration (STEP alignment, real-world fit)
-Prototyping to testing to production support
--𝐏𝐫𝐞𝐯𝐢𝐨𝐮𝐬 𝐬𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐰𝐨𝐫𝐤 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬:
---𝐂𝐮𝐬𝐭𝐨𝐦 𝐀𝐈 𝐅𝐥𝐢𝐠𝐡𝐭 𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫 𝐃𝐫𝐨𝐧𝐞:
Designed PCB and system integrating high-speed MCU + Jetson Orin Nano
Camera pipeline, GPS, LTE, and real-time control integration
Focus on signal integrity, power distribution, and system stability
---𝐏𝐫𝐞𝐜𝐢𝐬𝐢𝐨𝐧 𝐆𝐏𝐒 & 𝐑𝐅 𝐌𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦:
LEA-M8T GPS + RF frontend + high-speed ADC
LTE connectivity + ESP32-S3 integration
Designed for accurate measurement and noisy RF environments
---𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐈𝐨𝐓 𝐇𝐮𝐛:
Raspberry Pi CM4 + LTE module + Ethernet
Multi-device communication and cloud integration
Designed for reliable field deployment
---𝐖𝐞𝐚𝐫𝐚𝐛𝐥𝐞 𝐏𝐨𝐬𝐭𝐮𝐫𝐞 𝐂𝐨𝐫𝐫𝐞𝐜𝐭𝐢𝐨𝐧 𝐃𝐞𝐯𝐢𝐜𝐞:
nRF52 + IMU + BLE + vibration feedback
Real-time posture detection + mobile communication
Focus on low-power design and compact hardware
---𝐇𝐚𝐩𝐭𝐢𝐜𝐬 + 𝐋𝐄𝐃 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐒𝐲𝐬𝐭𝐞𝐦:
ESP32 + DRV2605L drivers + WS2812B LED system
Multi-directional vibration feedback + lighting control
Custom PCB + power protection + system integration
---------------------------------------------------------------------------------------------------------------------
I don’t just “design boards”, I think in terms of complete systems:
Will this work reliably in real conditions?
Will signals behave correctly (not just in theory)?
Will manufacturing and assembly go smoothly?
Can this scale beyond the prototype?
That’s the level I work at.
If you’re building something that needs to actually work in hardware, I can help you get there.
Associated with
Syncro
$1K+
earned
$22/hr
$85 earned
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I am an Embedded Firmware Engineer with 2+ years of professional experience developing and testing MCU-based systems. I specialize in STM32 and PIC32 microcontrollers, working with peripherals such as UART, I2C, I2S, ADC, DMA, timers, and GPIO.
I have designed and implemented full-stack embedded projects, including an autonomous car where the STM32 MCU controls 4 DC motors and communicates via an ESP32 BLE module with a custom Android app. I also have experience in IoT devices using MQTT for sensor data reporting, firmware testing, and Modbus communication.
I am proficient in C/C++ for embedded systems and C# for mobile and desktop applications. I am passionate about creating efficient, reliable, and maintainable firmware and bridging the gap between hardware and software.
I am available for freelance projects involving embedded systems, firmware development and IoT solutions.
Feel free to reach out to discuss your embedded or IoT project needs!
$60/hr
79%
Job Success
$4K+ earned
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I am an experienced Electronic Embedded System Designer with a passion for creating smart and connected solutions. If you are seeking a highly skilled professional to develop innovative embedded systems, firmware, and IoT devices, you've come to the right place.
My Expertise:
- Embedded System Design: I specialize in designing and developing embedded systems for a wide range of applications. From small-scale microcontroller-based systems to complex IoT devices, I can bring your ideas to life with optimized hardware and software integration.
- IoT (Internet of Things): I have a deep understanding of IoT principles and protocols, enabling me to create interconnected devices that collect and transmit data efficiently and securely. I can design IoT solutions that enhance automation, monitoring, and control in various industries.
- Microcontroller Programming: With proficiency in programming languages like C/C++, Python, and Assembly, I can code firmware for various microcontrollers and platforms. I ensure that the firmware is reliable, power-efficient, and capable of delivering the desired functionality.
- Sensor Integration: I have experience in integrating a wide range of sensors, such as temperature, humidity, motion, and proximity sensors, into embedded systems. This enables me to design smart devices that can perceive and respond to their environments.
- Wireless Communication: I am well-versed in implementing various wireless communication protocols like Wi-Fi, Bluetooth, Zigbee, and LoRa, facilitating seamless data exchange and remote control capabilities in your embedded systems.
- Hardware and PCB Design: I can create custom hardware designs and schematics, considering factors such as power consumption, signal integrity, and noise reduction. Additionally, I have expertise in designing compact and optimized PCB layouts for manufacturability.
- Prototyping and Testing: I believe in the importance of thorough prototyping and testing to validate designs before full-scale production. I can rapidly prototype your embedded systems and conduct comprehensive testing to ensure they meet your specifications.
Why Choose Me?
- Over 20 years of experience as an Electronic Embedded System Designer, successfully delivering projects for diverse industries.
- A proven track record of designing and implementing embedded solutions that exceed client expectations.
- Proficient in the latest tools and technologies for embedded systems design and IoT development.
- An analytical mindset and problem-solving skills to tackle complex challenges and find optimal solutions.
- Strong attention to detail, ensuring that every aspect of your project is carefully considered and executed.
Let's work together to create cutting-edge solutions that make a difference. Please feel free to contact me to discuss your project requirements or any questions you may have.
Thank you for visiting my profile!
Bosnia and Herzegovina
$40/hr
100%
Job Success
$40K+ earned
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Semir T.
has worked
.
✅𝙏𝙊𝙋-𝙍𝘼𝙏𝙀𝘿 𝙀𝙢𝙗𝙚𝙙𝙙𝙚𝙙 𝙎𝙮𝙨𝙩𝙚𝙢𝙨 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙚𝙧✅
I design and build firmware and hardware for everything from consumer gadgets and IoT products to sports tech and medical devices—delivering smart, connected solutions that work. Backed by 10+ years of hands-on experience across a wide range of embedded systems, I bring a strong focus on quality, performance, and getting things done right.
💻 𝗙𝗶𝗿𝗺𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
Over the years, I've mastered the art of creating firmware across the spectrum - from simple 8-bit to powerful 32-bit microcontrollers. Here's where I shine:
🔹 𝙎𝙏𝙈 - I've worked with virtually every STM32 variant out there (F, L, G, H, U, WB, WL, and MP series). Whether you need ultra-low power consumption or blazing performance, I can make these chips sing.
🔹 𝘼𝙏𝙈𝙀𝙂𝘼 & 𝘼𝙏𝙎𝘼𝙈 - From the classic ATMEGA328 that powers Arduino to the powerful SAMA5, I've built everything from smart home devices to industrial control systems with these reliable workhorses.
🔹 𝙋𝙄𝘾 - I've tamed the entire PIC ecosystem - from basic 8-bit controllers (PIC16F/18F) to the powerful 32-bit PIC32MZ. Perfect for cost-sensitive projects that still need serious capability.
🔹 𝙀𝙎𝙋 𝙈𝙤𝙙𝙪𝙡𝙚𝙨 - Need WiFi or Bluetooth in your project? I've developed countless solutions with ESP32 and ESP8266, creating connected devices that are both responsive and power-efficient.
🔹 𝙉𝙤𝙧𝙙𝙞𝙘 𝙣𝙍𝙁5𝙭 - When battery life is critical, I turn to the nRF family. I've crafted BLE devices that run for months or years on a coin cell, including complex mesh networks that maintain rock-solid connections.
This diverse toolbox lets me pick exactly the right platform for your specific needs, whether you're creating consumer gadgets, industrial equipment, medical devices, or the next big IoT innovation.
⚙️ 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
Hardware isn't just about connecting components—it's about creating something that works reliably in the real world. After a decade of designing electronics, here's what I bring to the table:
🔹 𝙋𝘾𝘽 𝘿𝙚𝙨𝙞𝙜𝙣 - I've designed everything from simple 2-layer boards to complex 10-layer systems using KiCAD. Each design balances performance needs with manufacturing realities—because a great design that can't be built isn't actually great. I also provide detailed 3D models of the board, helping you visualize the final product and identify mechanical integration issues early.
🔹 𝙀𝙈𝘾-𝙍𝙚𝙖𝙙𝙮 𝘿𝙚𝙨𝙞𝙜𝙣𝙨 - I've developed a solid track record of creating boards that pass EMC testing. Through careful attention to ground planes, component placement, and proper shielding techniques, I minimize interference issues before they become problems. My designs consistently meet compliance requirements without costly redesigns.
🔹 𝙎𝙞𝙜𝙣𝙖𝙡 𝙄𝙣𝙩𝙚𝙜𝙧𝙞𝙩𝙮- High-speed designs can be tricky beasts. I've learned the hard way that when your data is flying around at hundreds of MHz, you can't just connect point A to point B and call it done. My designs account for real-world challenges like impedance matching and controlled trace lengths, so your signals arrive clean and clear, even when surrounded by noisy components.
🔹 𝙏𝙚𝙨𝙩 𝙅𝙞𝙜𝙨 𝙏𝙝𝙖𝙩 𝙎𝙖𝙫𝙚 𝙏𝙞𝙢𝙚 - I build custom test fixtures for production testing that improve quality while reducing test time. From programming jigs to complete functional testers, I ensure your manufacturing process is smooth and efficient.
Every board I design gets the same attention to detail whether it's a simple sensor node or a complex control system. My goal is hardware that just works, without excuses or mysterious failures.
🛠️ 𝗖𝘂𝘀𝘁𝗼𝗺 𝗗𝗿𝗶𝘃𝗲𝗿 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
I create robust drivers for diverse hardware components:
🔹 Sensors - IMUs, GPS, temperature, pressure, and more
🔹 User Interfaces - Touchscreens, displays, input devices
🔹 Wireless - WiFi, BLE, LoRa, Zigbee, UWB
🔹 Storage - EEPROM, Flash, SD interfaces
My drivers work reliably even in challenging environments.
🚀 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗗𝗲𝘀𝗶𝗴𝗻 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗶𝗻𝗴
I help transform ideas into reality by:
🔹 Validating concepts
🔹 Selecting optimal hardware components
🔹 Designing scalable firmware architectures
🔹 Creating functional prototypes
From concept to market-ready product, I balance performance, cost, and power efficiency while ensuring your vision becomes reality.
📩 𝗟𝗲𝘁'𝘀 𝗠𝗮𝗸𝗲 𝗬𝗼𝘂𝗿 𝗜𝗱𝗲𝗮𝘀 𝗮 𝗥𝗲𝗮𝗹𝗶𝘁𝘆!
Whether you're developing the next IoT breakthrough or need robust embedded systems support, I'm here to help. Reach out, and let's collaborate to bring your vision to life.
$40/hr
100%
Job Success
$3K+ earned
Start of list.
End of list.
I help startups and engineering teams turn ideas into working embedded products — from schematic and PCB design to robust C firmware.
I’m a Firmware & Embedded Systems Engineer with 4+ years of hands-on experience in C programming, microcontroller development, PCB design, and electronics system integration. I specialize in building reliable, scalable firmware and designing hardware that works right the first time.
I understand the full product development cycle — not just writing code, but ensuring the hardware, firmware, and power architecture work together efficiently and reliably.
If you need someone who can move from concept to prototype to production-ready design with minimal supervision, let’s talk.
$45/hr
100%
Job Success
$80K+ earned
Start of list.
End of list.
I design and build complete embedded products — from PCB to firmware to software — so you don't need to coordinate three different specialists. 15+ years of experience, low-power and Bluetooth design expertise, and every line of firmware backed by real testing.
* Hardware Design
----------------------
I design complete boards in Altium, KiCad, and OrCAD — power section, MCU section, digital and analog peripherals — based on Microchip PIC, ARM Cortex, and ESP32 microcontrollers. Specific areas of expertise include:
* Low-power design for battery-powered devices
* Shield design for commercial platforms (Arduino, Raspberry Pi, BeagleBone)
* PCB design with Bluetooth connectivity (Classic and BLE)
* Firmware Development
-----------------------------
I write firmware in C for ARM Cortex M0/M0+/M3/M4/M33 architectures (STM32, NXP, Silicon Labs EFM32/EFR32, Nordic nRF5x) and for ESP32 using the ESP-IDF framework, in both bare-metal and multitasking environments (FreeRTOS, RTX). I cover the full application stack:
* Low-level drivers (GPIO, UART, SPI, I2C, PWM)
* Drivers for sensors, MEMS, memories, fuel gauges, displays
* Application logic, bootloaders, and OTA
* Bluetooth stacks (Classic and BLE)
* Every firmware project I develop comes with unit, integration, and stress testing to ensure robustness and long-term reliability.
* Why Work With Me
------------------------
My key strength is cross-domain vision: I can design hardware with the firmware that will run on it already in mind, and write firmware knowing exactly what happens at the electrical level. This reduces iterations, development time, and project risk — real value whether you need fast prototyping or a product ready for mass production.
I'm quick to pick up new frameworks and toolchains based on project needs.
Vietnam
$20/hr
100%
Job Success
$3K+ earned
Start of list.
End of list.
Experience in developing and testing embedded applications for Linux platforms
Skilled in developing embedded software using C & JS programming language
Skilled in software debugging and working on ARM architecture platform
Basic knowledge of any communication : HTTP/HTTPS, SSH, UART, CAN, ...
$35/hr
100%
Job Success
$40K+ earned
Start of list.
End of list.
Mohamed M.
has worked
.
Digital IC Design RTL Modeling, FPGA & IP/SoC/Embedded Development Engineer.
Offering:
- FPGA/ASIC RTL solutions in (System)Verilog, and VHDL.
- Embedded C Coding.
- Multilingual Tutoring.
-------Your success is my priority-------
Available Round-the-Clock | Flexible Pricing | Prioritizing Service Excellence
My Experience:
I've worked extensively with FPGAs, utilizing various FPGA boards from different vendors such as AMD(Xilinx)/Intel(Altera)/Efinix.
Also experienced in ASIC designs, I've worked with Synopsys tools, with TCL scripts and GUI for DesignCompiler, Formality.
Proficient in documentation using:
- LaTeX: for professional documentation.
- Markdown: for GitHub repos.
- Microsoft Word.
Let's collaborate and bring your project to life. Reach out to discuss the details, and I'll be here to assist you at any time.
Additional Key Skills:
- STA and CDC.
- Communication protocols such as: UART - SPI - I2C - AXI...
- Programming languages such as: C/C++.
- Knowledge in scripting Language : TCL - Python .
Tools:
VUnit • Vivado IDE • Quartus prime • Efinity IDE • VS Code • Xilinx ISE • ModelSim/QuestaSim.