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We are seeking experienced Hardware and Firmware Development Engineers to lead the end-to-end development of a consumer-grade embedded IoT system. This is a collaborative project requiring close coordination between hardware and firmware teams to deliver a production-ready industrial IoT device with advanced wireless capabilities and sensor integration. HARDWARE DEVELOPMENT ENGINEER Key Responsibilities: - System-level hardware architecture and design freeze - Component selection (MCU/SoC, power ICs, storage interfaces, wireless modules) - Schematic design and PCB layout (high-speed + mixed-signal, EMI-aware) - Power integrity, grounding, shielding, and DFM/DFA compliance - Prototype fabrication support and manufacturer Q&A - Hardware bring-up support and validation with firmware engineer - Clear documentation for handover and future revisions Deliverables & Milestones: Milestone 1 – System Architecture & Design Freeze (10 days): - System block diagram - MCU/SoC selection with justification - Storage interface definition - Power budget & thermal assumptions - Preliminary BOM with cost estimates - Key risks & assumptions documentation Milestone 2 – Schematic Design + PCB Layout (14 days): - Complete Altium schematic and PCB layout - ERC/DRC-clean design - Stack-up and impedance details - Manufacturing files (Gerber, PnP, BOM) - Design notes (PDF + native files) Milestone 2-Extension – Prototype Fabrication Support: - Manufacturer Q&A support - Assembly file verification - Footprint/polarity confirmation Milestone 5 – Integration & Handover (7 days): - Schematics, PCB files, BOM handover - Bring-up notes - Hardware validation support - Test points/debug guidance FIRMWARE DEVELOPMENT ENGINEER Key Responsibilities: - Develop, optimise, and debug firmware for industrial IoT devices - Integrate wireless communication protocols (Wi-Fi, BLE) and sensor systems - Work with high-speed data interfaces and advanced wireless technologies - Ensure seamless hardware-software integration and system reliability - Collaborate with hardware teams for system bring-up and testing - Participate in hardware validation and integration milestones Required Qualifications: - Proven experience with consumer electronics and mixed-signal designs (Hardware) - Strong background in embedded firmware development for IoT devices (Firmware) - Experience with wireless protocols (Wi-Fi, BLE) and sensor integration - Prior experience with EU/US consumer products strongly preferred - Ability to work collaboratively across hardware-firmware boundaries - Strong documentation and communication skills Preferred Freelancer Locations: China, Japan, Taiwan, South Korea, Thailand, Vietnam, Eastern Europe, India Timeline: Hardware: Fixed by milestones as detailed above (approximately 31 days + fabrication support) Firmware: 2-3 months Both roles must coordinate closely throughout the development cycle Note: Both engineers must strictly adhere to the milestone plan and deliverables. Clear communication and collaboration between hardware and firmware teams is essential for project success.
Project ID: 40312250
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Thank you for your invitation. I'm very glad to work with you and do my best on your project. Best regards. Ting
€250 EUR in 7 days
4.9
4.9
23 freelancers are bidding on average €2,126 EUR for this job

I can lead the hardware development end-to-end, from architecture and component selection to EMI-aware PCB design and production-ready deliverables, with strong coordination with firmware. I’ve delivered similar IoT systems with BLE/Wi-Fi, ensuring reliable bring-up, validation, and clean documentation for manufacturing and handover.
€500 EUR in 7 days
6.8
6.8

With a deep understanding of combined mechanical and electrical engineering, as well as circuit design and PCB layout, I believe I am the ideal candidate for the hardware development engineer role. My experience with consumer electronics and mixed-signal designs makes me comfortable and confident in navigating the challenging landscape of your project. From system-level architecture to BOM selection and power integrity management, I have a proven ability to deliver on all fronts. Turning to firmware development, my proficiency in embedded systems and IoT devices is extensive. I have successfully optimized and debugged firmware for industrial-grade IoT systems like the one you're envisioning. My expertise with wireless protocols (Wi-Fi, BLE), sensor integration, and high-speed data interfaces aligns perfectly with your needs. Moreover, my ability to ensure seamless hardware-software integration further strengthens my candidacy.
€500 EUR in 7 days
6.3
6.3

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Antenna Design (CST, HFSS) Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI MATLAB/SIMULINK Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.
€500 EUR in 7 days
6.1
6.1

Hi, I recently led end-to-end development of an ESP32-based IoT device with Wi-Fi/BLE, sensor integration, and production-ready PCB, where the main challenge was achieving stable RF performance alongside clean mixed-signal layout and reliable firmware-hardware integration. From your description, you need a coordinated hardware + firmware effort for a consumer-grade IoT system with strong emphasis on architecture, EMI robustness, and seamless integration. The key considerations will be proper SoC selection, power integrity, RF layout, and structured firmware bring-up aligned with hardware milestones. My approach would be: 1. Define system architecture, power budget, and risks 2. Design EMI-aware schematic and multi-layer PCB 3. Develop firmware for sensors, Wi-Fi/BLE, and stability 4. Perform bring-up, validation, and debug support 5. Deliver complete documentation and production files Quick question: Do you already have preferred MCU/SoC or should I propose options based on performance and cost targets? Best regards Mykola
€2,000 EUR in 40 days
5.2
5.2

Hi, I am a hardware/firmware engineer with 10+ years of experience in IoT and consumer electronics, delivering 20+ mixed-signal PCB designs (up to 10 layers) and 12+ production devices using nRF52/ESP32, achieving >95% first-pass bring-up and reducing EMI re-spins by 30%. I have led full-cycle development from architecture to production, including RF layout, power integrity, and firmware integration, improving power efficiency by 20% and ensuring stable wireless performance under high data load. Approach: ✅ I will define system architecture, select MCU/SoC, and establish power and thermal budgets with clear margins. ✅ I will design schematics and EMI-aware PCB layout with controlled impedance and RF matching. ✅ I will support fabrication, verify assembly outputs, and lead structured hardware bring-up. ✅ I will integrate firmware (Wi-Fi/BLE, sensors) and validate system performance. Questions: ✅ I would like to confirm target wireless standards and certification requirements (CE/FCC). ✅ I need details on sensor types, interfaces, and data throughput. ✅ I would like to clarify power source and battery life targets. ✅ I would like to confirm preferred manufacturer and sourcing constraints. If you allow me to handle everything, I will provide a high-quality, working prototype. Best, Yaroslav
€1,800 EUR in 60 days
5.1
5.1

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq
€480.30 EUR in 7 days
4.5
4.5

Having brought several consumer-grade IoT devices from initial prototyping to mass production, I understand the critical balance between power efficiency, manufacturing costs, and long-term reliability. My background includes developing low-power sensor nodes and smart controllers where I utilized platforms like the nRF52 series and STM32 to achieve exceptional battery life and robust connectivity. By maintaining a production-first mindset from day one, I ensure that the transition from initial firmware development to factory-level flashing and FCC/CE certification is seamless, significantly reducing the risk of costly hardware revisions late in the cycle. To execute this project, I will begin by selecting a component architecture that prioritizes long-term supply chain availability and minimal idle power consumption, followed by a multi-layer PCB layout in Altium or KiCad optimized for signal integrity. The firmware will be architected using a modular RTOS (such as FreeRTOS or Zephyr), implementing secure bootloaders, encrypted data transmission via MQTT/TLS, and reliable Over-the-Air (OTA) updates to ensure field-serviceability. I focus on low-latency interrupt handling and efficient memory management to provide a fluid user experience even on resource-constrained embedded hardware. To better understand the scope, do you have a specific target enclosure size or mechanical constraints that will dictate the PCB footprint? Additionally, are there specific cloud ecosystems or mobile frameworks the system needs to integrate with during the initial deployment phase? I am available for a brief call to discuss your technical roadmap and can provide a preliminary bill of materials (BOM) assessment to ensure we are aligned on the production cost targets. Let's connect to discuss how we can bring this embedded system to market efficiently.
€649 EUR in 21 days
3.7
3.7

Hello, I’m an experienced hardware design engineer specializing in embedded IoT systems, mixed-signal PCB design, and production-ready electronics. I can lead your hardware development from architecture to fabrication. My approach: define a robust system architecture and design freeze, select optimal MCU/SoC, power, and wireless components, and design EMI-aware, high-speed/mixed-signal PCBs in Altium with clean ERC/DRC. I focus on power integrity, grounding, and DFM/DFA to ensure smooth manufacturing. I provide complete deliverables: schematics, PCB layout, stack-up, Gerbers, BOM, and design documentation, plus support during prototype fabrication and bring-up with clear test/debug guidance. I’m comfortable collaborating closely with firmware teams to ensure seamless integration and fast validation. Ready to deliver a reliable, production-ready design. Best regards
€500 EUR in 7 days
3.3
3.3

Greetings Dear Hiring Manager I have read the description of your project and I understand everything. I am an expert in end-to-end IoT product development, offering the rare advantage of being a specialist in both high-speed mixed-signal PCB design and low-level embedded firmware optimization. I have a proven track record of delivering production-ready consumer electronics—from MCU selection and EMI-aware Altium layouts to the integration of complex Wi-Fi/BLE stacks—ensuring seamless hardware-firmware synchronization, strict adherence to DFM/DFA standards, and successful navigation of the 31-day milestone path for industrial-grade reliability. I am waiting on chat to discuss more and I am willing to start it now. Best Regards, Zain Abbas
€250 EUR in 1 day
4.5
4.5

Dear Sir , My Name Is Anil Saini I am interested in your project and confident I can deliver exactly what you need. I have completed many similar projects and always focus on quality, speed, and clear communication. Why choose me: • Quick response and regular updates • High-quality professional work • 100% client satisfaction We are an expert team which have 12 years of experience on Electronics, Electrical Engineering, PCB Layout "I have a couple of ideas on how to optimize the Electronics, Electrical Engineering, PCB Layout let’s discuss them in the chat." Thank you for considering my proposal. Warm regards, Anil Saini
€525 EUR in 3 days
2.1
2.1

As a seasoned hardware developer with proven experience in consumer electronics, mixed-signal designs, and proficiency in several programming languages including C/C++, Python, alongside strong PCB layout skills and the ability to implement complex Bluetooth/WiFi solutions, I am confident I can contribute significantly to your project needs. Throughout my own work in hardware development, I prioritize aspects such as power integrity, grounding, shielding, and DFM/DFA compliance which I understand to be essential for your IoT project. My previous experience with MCU/SoC and wireless module selection aligned with system requirements will lead to smooth coordination with firmware teams. I am equally well-versed in firmware development for industrial IoT devices emphasizing wireless protocols (Wi-Fi, BLE) integration and sensor systems. Ensuring a seamless integration between the hardware-software elements is my topmost priority during projects. Moreover, my past experience entails not just high-speed data interfaces and advanced wireless technologies adeptness but also working collaboratively across hardware-firmware boundaries -qualities which make me a fit for working in strict coordination with the estationed budget & thermal assumptions required for the successful outturn of the milestone 2 & its extension.
€250 EUR in 7 days
2.3
2.3

Hi, are you looking for a Hardware & Firmware Engineer to lead end-to-end development of a consumer-grade IoT system with strong coordination between design and implementation? I am an Electrical & Embedded Systems Engineer with five plus years experience in PCB design, IoT hardware, and firmware development, and I can support both hardware architecture and firmware integration efficiently. For Hardware, I will handle system architecture, MCU/SoC selection, power design, and EMI-aware multi-layer PCB layout with full DFM/DFA compliance. I’ll deliver a clean schematic, optimized stack-up, and complete manufacturing package, along with bring-up and validation support. For Firmware, I can develop reliable embedded code integrating Wi-Fi/BLE, sensors, and communication protocols, ensuring seamless hardware-software interaction and stable performance. I follow structured milestones, provide clear documentation, and maintain close collaboration throughout development to ensure a production-ready, scalable IoT device.
€250 EUR in 7 days
1.9
1.9

Hello, I have carefully analyzed your embedded IoT system project. I recently worked on a consumer-grade IoT device where I handled firmware development and collaborated closely with hardware engineers on system architecture, wireless integration, and bring-up. Your need for tight hardware–firmware coordination is clear. I can contribute as firmware engineer, developing optimized code for MCU/SoC, integrating Wi-Fi/BLE, sensors, and ensuring stable communication and data handling. I will support hardware bring-up, debugging, and validation, with clean documentation and structured development aligned with your milestones. I have strong experience with embedded systems, IoT protocols, and real-world device reliability. I am available to start immediately and committed to delivering high-quality, stable firmware in the shortest timeframe while collaborating closely with your hardware team. Best regards, Viktor
€500 EUR in 10 days
0.0
0.0

Your search for an end-to-end development partner for a consumer IoT system aligns perfectly with my background in delivering high-reliability products, including a recent project that transitioned from an nRF52 prototype to a 10k-unit production run. I understand that consumer electronics demand a meticulous balance between compact design and robust electrical performance. By integrating Design for Manufacturing (DFM) and signal integrity analysis from the initial schematic phase, I minimize the risk of costly respins and ensure your hardware meets stringent EMI/EMC standards for global certification. My technical strategy focuses on building a scalable foundation using Altium Designer for multi-layer PCB layouts, prioritizing optimized trace routing and advanced power management circuits. I specialize in firmware development using C/C++ within FreeRTOS or Zephyr environments, implementing efficient power-save modes and secure bootloaders for reliable Over-the-Air (OTA) updates. For connectivity, I implement tailored BLE, Wi-Fi, or LTE-M stacks that ensure low-latency data transmission with end-to-end encryption. I utilize Segger J-Link and power profiling tools to validate real-time consumption, ensuring the device exceeds user expectations for battery life. Could you clarify the primary power source and if there are specific environmental ratings required for the enclosure? I am also interested to know which cloud platform or mobile application you plan to integrate with, as this informs our protocol stack selection. I would welcome the opportunity to jump on a brief call to align on your technical roadmap and discuss how I can help bring this consumer-grade system to market efficiently.
€642 EUR in 21 days
0.0
0.0

Garches, Greece
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