Embedded Hardware & Firmware Engineer for Custom IoT Device

@Mahihassi

As an adept and deeply experienced Electrical Engineer with a Master's Degree in Embedded Systems, specializing in firmware development, PCB design, and IoT product engineering, I am confident that my skill set is perfectly tailored to meet your needs. My extensive knowledge of microcontrollers like ESP32, STM32, and nRF52 coupled with my robust proficiency in C/C++ have allowed me to deliver reliable and efficient solutions in the past. Improving on this foundation, I’ve also become skilled in preparing products for manufacturing and utilizing hardware debugging tools to efficiently troubleshoot any potential issues which may arise. What distinguishes me from other candidates is my ability to envision and execute on full product development workflows. From designing multi-layered PCB’s to optimizing embedded coding, I have a deep understanding of both software and hardware aspects of the project. My design competencies include AI/ML integration for edge computing, control algorithms, and even mechanical CAD modeling for enclosures- collectively allowing me to develop an efficient IoT device encompassing the full range of required functionalities.

@SPARKtechBD

Since 2003 I am working in Digital Electronic. So more than 18 years of experience in Electronics. Arduino NANO/UNO/MEGA, ESP32 and Raspberry PI to build a digital device to read sensor data and send it to the web server, motor control, control relay switches and LEDs. More than 5(five) years of experience in Arduino design and build. If you want an excellent and error-free project delivery, then send a message to me, please. Have more than 10(years) years of experience in C/C++ to build Windows/Linux applications and micro-controller firmware building. If you want a good job delivery, then send a message to me, please. Since 1995 I have been working on Analog and Digital Electronics to build any kind of device. I have build lots of devices. So more than 20 years of experience on Electronics. Including power supply design. Any kinds of schematic and PCB design. Expert PCB design in EasyEDA Pro IDE.

@macroenergy

Having spent many years honing my skills and experience, I am confident that I have the necessary qualifications to take on the embedded hardware and firmware development project that you've outlined. My strengths lie in my ability in taking a project from concept to reality - from designing a multi-layer PCB to selecting appropriate components, debugging any issues, and finally, producing manufacturing-ready designs. In particular, my proficiency in C/C++, which you have listed as a requirement, will enable me to carry out the firmware development for your chosen microcontroller seamlessly. My familiarity with microcontrollers such as ESP32, STM32, and nRF52 among others will furthermore ensure that we can employ the best-suited one for our task. Moreover, my experience with Embedded Linux and knowledge regarding real-time operating systems (RTOS) add valuable extra skills into our endeavor. Additionally, my background in Digital Motor Control and Power Electronics has allowed me to develop a deep understanding of different electrical systems - thence equiping me with the proficiency needed to integrate sensors, wireless connectivity and peripheral devices effectively into your design. Furthermore, I boast excellent problem-solving competencies which have been sharpened throughout my career.

@engrusmanfaiz

We are looking for an experienced Embedded Hardware & Firmware Engineer to assist with the development of a custom electronic product from concept to prototype. Scope of Work Design a reliable multi-layer PCB for a custom embedded device. Select appropriate components based on performance, cost, and availability. Develop firmware for a modern microcontroller (such as ESP32, ARM Cortex, or similar). Implement communication interfaces including UART, SPI, I2C, CAN, USB, or Ethernet where applicable. Integrate sensors, wireless connectivity, and peripheral devices. Debug hardware and firmware issues during prototype development. Prepare production-ready design files, schematics, BOM, and documentation. Support prototype testing and manufacturing. Required Skills Experience preparing products for manufacturing. Deliverables Complete schematic and PCB design files. Production-ready Gerber files and BOM. Fully documented firmware source code. Test procedures and documentation. Support during prototype validation. Preferred Qualifications Previous experience developing commercial embedded products. Strong problem-solving skills and attention to detail. Ability to communicate clearly and provide regular project updates. This project has the potential to lead to additional long-term development work based on performance and project success.

@majeed219

Most concept-to-prototype builds don't stall at the schematic. They stall at the seams — where firmware meets hardware and a working board meets what a fab will actually produce. Scoping this as one continuous effort instead of a handoff chain is the right call. Why me? - Five years taking ESP32, STM32, and nRF52 designs from schematic to production-ready Gerbers and documented firmware. - Component selection driven by live stock and second-source options to avoid the usual out-of-stock prototype delays. - Schematic, PCB layout, firmware, and DFM all handled in-house with no cross-vendor handoffs. - Daily progress updates and replies within five minutes during work hours. - Two weeks of free post-prototype support after handoff. Let's get on a short call this week to walk through your concept and timeline.

@jimsufficiency

Hi, I’m an Embedded Systems Engineer with 6+ years of experience developing commercial embedded products from concept through prototype and production. My expertise includes multi-layer PCB design, firmware development, ESP32/STM32/nRF52 platforms, RTOS-based systems, industrial communications, sensor integration, and manufacturing support. I can support the entire development cycle, including: • Hardware architecture and component selection • Multi-layer PCB design and production-ready documentation • Firmware development in C/C++ • UART, SPI, I²C, CAN, USB, and Ethernet integration • Sensor and wireless connectivity implementation • Hardware/firmware debugging and validation • Prototype bring-up and manufacturing support Deliverables: • Schematics and PCB design files • Gerbers, BOM, and manufacturing package • Fully documented firmware source code • Test procedures and validation documentation • Ongoing support during prototype testing Rate: $45/hour Availability: Immediate I’m comfortable working independently or as part of a multidisciplinary team and can provide regular progress updates throughout the project. Best regards, Jesutofunmi Embedded Systems & Hardware/Firmware Engineer

@sekai1116

As an experienced Embedded Hardware and Firmware Engineer, I would highly value the opportunity to help you develop your custom electronic product. With my extensive expertise in PCB design, embedded hardware, and firmware development in C/C++ or Rust, I can ensure the reliable, cost-effective, and well-documented design that you're looking for. My familiarity with various microcontrollers such as STM32, ESP32, nRF52 aligns perfectly with your project. In addition to strong proficiency in designing robust PCBs and debugging any corresponding hardware or software issues, I have a deep understanding of effective communication interfaces like UART, SPI, I2C, CAN, USB or Ethernet that will be integral in integrating the various sensors, wireless connectivity and peripheral devices for your product. Being accustomed to using tools such as an oscilloscope or a logic analyzer for hardware debugging, I can readily address any challenges during the prototype phase and prepare well-documented production-ready designs. My familiarity with Altium Designer also ensures quick turnaround times for all your schematic and PCB design requirements. In sum, my technical finesse complemented by my ability to communicate clearly make me an excellent fit for this project.

@julianm260

With my comprehensive skillset and extensive experience, I am confident that I can deliver the exceptional service you need for your custom IoT project. Over the years, I have honed my expertise in embedded systems, particularly in designing reliable multi-layer PCBs from concept to prototype. My deep understanding of C/C++, Rust, and proficient use of microcontrollers like ESP32 and STM32 augments my ability to develop efficient firmware that seamlessly integrates various communication interfaces and peripheral devices relevant to your project. One of the aspects that sets me apart as an engineer is my prowess in troubleshooting hardware and firmware issues during prototyping, ensuring a smooth development process. Furthermore, I understand the importance of delivering not just a working prototype but also one that can transition seamlessly into production. Thus, my proficiency in creating production-ready design files, schematics, BOMs, and meticulous documentation will provide you with a solid foundation for manufacturing. Moreover, I believe in effective communication and strive to keep my clients informed about project progress. Regular updates are an integral part of my work ethic so you can trust that you'll be aware of every phase of the project. With me on board for this project, you're leveraging not only my technical skills but also a collaborative problem-solver who pays utmost attention to detail - crucial traits for successful embedded system implementation. If you choose me for this endeavor, it will not only receive dedicated attention yielding a precise solution but also have the potential for a long-term professional partnership based on performance and mutual satisfaction. Let's bring your custom electronic product vision to life together!

@emanz03

The critical part of projects like this is making hardware, firmware, and manufacturing constraints work together from day one. I've worked on embedded systems where early component choices and PCB layout decisions had a major impact on EMI, power consumption, and prototype reliability, so I prefer to approach the design as a complete product rather than separate hardware and firmware tasks. I'd start by defining the architecture, selecting components with long-term availability in mind, then move into schematic capture, multilayer PCB design, and firmware development in parallel. Communication stacks, sensor integration, RTOS support, and production documentation would all be structured for future revisions and manufacturing. Hardware bring-up, debugging with oscilloscopes/logic analyzers, and prototype validation are also part of my normal workflow. One thing that would help scope the work properly: what is the primary function of the device and which wireless technologies are expected (WiFi, BLE, LoRa, cellular, or something else)?

@trm66614

I can help with your custom IoT device project. My experience in designing multi-layer PCBs and developing firmware for microcontrollers makes me a strong fit. I have a solid background in PCB layout and can select the best components for quality and cost. Developing firmware in Rust or C is my specialty, and I understand various communication interfaces like UART, SPI, and I2C. My expertise also includes testing prototypes and resolving issues effectively. I prioritize clear communication and will keep you updated throughout the development. What specific challenges do you foresee during the prototype development? Could you tell me more about the specific features you want in the firmware? What kind of sensors will be integrated into the device? Are there any specific testing procedures you want to follow during prototype validation? How soon do you need the initial prototype ready?

@revival786

Greetings! I will design your custom embedded device from concept to prototype. I will create multi layer PCB, select components, develop firmware for ESP32 or STM32, implement communication interfaces, integrate sensors, debug hardware and firmware, and prepare production ready files. I have embedded hardware and firmware experience. Send your product requirements and specifications. Thanks, Revival

@DngPhgNam

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have developed custom IoT devices with multi-layer PCB design and firmware using ESP32 microcontrollers, ensuring smooth communication and sensor integration. The most important part to successfully complete this project is thorough hardware and firmware debugging during prototype development. Approach: ⭕Design a reliable multi-layer PCB and select optimal components. ⭕Develop efficient firmware in C/C++ for the microcontroller. ⭕Implement communication protocols like UART, SPI, I2C, CAN, USB. ⭕Integrate sensors, wireless modules, and peripherals. ⭕Prepare production-ready design files and documentation. ⭕Support thorough testing and prototype validation. ❓ ❓Could you provide any preferred microcontroller or component constraints? I am confident my embedded hardware and firmware expertise will deliver a production-ready, reliable custom IoT device. Looking forward to working together. Best regards, Nam

@elijahhmonreal

Hi there, I just read your posting. It sounds like you need an experienced software engineer who can help build, improve, and maintain a reliable solution using Electronics, RTOS, C Programming, Embedded Systems, Rust, C++ Programming, STM32, PCB Layout, Electrical Engineering and Microcontroller. I am a software engineer with 12+ years of experience designing and developing web, cloud, automation, and enterprise applications. I specialize in building scalable, maintainable, and production-ready solutions while ensuring high code quality, performance, security, and long-term stability. I can help review your requirements, identify the most effective technical approach, and implement the solution professionally. Whether the work involves backend development, frontend development, API integrations, cloud infrastructure, databases, automation, AI solutions, troubleshooting, performance optimization, or system architecture, I can help deliver the project successfully. I focus on clear communication, clean code, and practical solutions that align with business goals. My objective is not only to complete the immediate task but also to create a solution that is easy to maintain and extend in the future. Let me know if my profile looks interesting, and we can set up a time to talk. Best regards, Elijah M.

@ronald4727

Hello, I have 15+ years of experience in embedded hardware and firmware development, taking products from early concept through to production. I see you need an embedded hardware & firmware engineer to design a multi-layer PCB, select components, and build reliable firmware for a custom IoT device—this aligns perfectly with my background. Previously, I’ve developed custom embedded devices using STM32 and ESP32, integrating a range of sensors, wireless modules, and communication interfaces for commercial clients. I’m very comfortable debugging both hardware and firmware, preparing production-ready documentation, and supporting prototype testing. Here’s how I can help you: > Design a robust multi-layer PCB and select optimal, cost-effective components > Develop and document firmware for your preferred microcontroller (ESP32, STM32, or similar) > Integrate sensors, wireless connectivity, and communication interfaces as specified > Provide complete design files, BOM, test procedures, and ongoing support for prototype validation For a recent project, I developed an industrial IoT gateway with STM32, designing the full hardware, firmware, and providing manufacturing support. To clarify, do you have a preferred microcontroller in mind, or would you like me to suggest the best fit for your requirements? Please contact me. Best Regards, Ronald

@richard7430

Hi, I see you need an experienced Embedded Hardware & Firmware Engineer to take your custom IoT device from concept to prototype. I have 20+ years of experience in embedded hardware design, PCB layout, and firmware development using C/C++ and Rust, working with microcontrollers like STM32, ESP32, and similar. I’ve supported clients through the full product development cycle, including prototyping, debugging, and preparing for manufacturing. - Design multi-layer PCB and create detailed schematics - Select components considering cost, performance, and supply chain - Develop firmware for your chosen microcontroller and interfaces (UART, SPI, I2C, etc.) - Integrate wireless modules, sensors, and peripherals as needed - Provide production-ready files, full documentation, and support for prototype testing I recently completed a similar project designing and prototyping an STM32-based industrial sensor node with wireless connectivity and multiple interface options. Could you share which specific microcontroller family you are leaning toward for this device? If you select me, I will satisfy you. Best Regards, Richard

@ayesha86664

Hi there! I understand you need an experienced Embedded Hardware & Firmware Engineer to take your product from concept to a fully working prototype. If PCB design or firmware is not properly aligned, it can cause hardware failures, unstable performance, and costly redesigns later. I have experience in embedded systems development, PCB design, and firmware programming using C/C++ for microcontrollers like ESP32, STM32, and ARM Cortex. I also work with hardware debugging, sensor integration, and communication protocols such as UART, SPI, I2C, CAN, and USB. I will design a reliable multi-layer PCB based on performance, cost, and manufacturing constraints. I will develop efficient firmware in C/C++ tailored to your selected microcontroller. I will integrate sensors, communication interfaces, and wireless modules for full system functionality. I will provide complete production-ready files including schematics, PCB layout, BOM, and documentation. I will support prototype testing and ensure the design is ready for manufacturing. check our work [https://www.freelancer.com/u/ayesha86664](https://www.freelancer.com/u/ayesha86664) Could you confirm which microcontroller platform you are planning to finalize for this project? I can start immediately with system design and hardware planning. Let me know if you’re interested & we can discuss it. Best Regards Ayesha

@mhhasibuzzaman

Wow! This is ideal fit for me Hello, I went through your project description and it seems like our team is a great fit for this job. I'm familiar with this kind of task and have many years of experience on C Programming, Electronics, Microcontroller, Electrical Engineering, PCB Layout, C++ Programming, RTOS, Rust, Embedded Systems, STM32 Please come over chat and discuss your requirement in a detailed way. Looking forward to your reply. Warmly, Hasibuzzaman I'd like to add one more thing. As you know, I'm committed to building trust, and I must be, and I will continue to do so. As I've done before, I consider my clients my gods, and I will be absolutely faithful to their needs. Just entrust me with this task. I will deliver on your expectations, exceeding them. I am sure. As I mentioned above, I'm confident in this task. Let's at least talk. I look forward to hearing from you

@sai0671

Hi, I am available now to assist you. I have read your project description. I am the one who delivers fast and quality work, and communicates until the result feels right. I am an experienced and specialized freelancer with 8+ years of practical experience in C Programming, C++ Programming, Rust. I have completed similar projects. Visit my profile to check samples of my latest work and client reviews. If you like the proposal, connect in chat and we will plan it out. Thanks, Sai