Hire the Best Hardware Engineers

💯 100% Job Success | 💲 $80K+ Earned | 70+ Projects Completed ✅ 10+ Years of Embedded Systems Experience ✅ Top Rated Freelancer on Upwork ✅ 100% Job Success Score ✅ $80K+ Earned | 2,600+ Hours Worked ✅ End-to-End Product Development Support ✅ Hardware + Firmware + IoT + Software Team Support I help startups, founders, and businesses design and develop reliable, cost-effective, and production-ready embedded products. My core expertise is in embedded hardware design, PCB design, and firmware development. Since 2013, I have worked on a wide range of products in industrial automation, IoT, wireless systems, energy products, smart devices, and consumer electronics. While hardware is my primary specialization, I also provide embedded software, mobile app, web dashboard, and backend development support through my team of engineers. This allows clients to work with one reliable partner for complete end-to-end product development. ✅ Why Clients Work With Me 10+ years of experience in embedded product development Strong expertise in hardware + firmware co-development Hands-on experience with production-ready PCB design Support from prototype stage to final product Clear communication and practical engineering approach Long-term project support and reliable execution ✅ Core Services Embedded hardware design Schematic design PCB design and layout Firmware development in C Board bring-up and debugging Wireless and IoT product development Prototype to production support Mobile and web applications for connected products ✅ Hardware & PCB Design Expertise 2-layer, 4-layer, and 6-layer PCB design Compact, low-cost, and manufacturable board design Analog and high-speed PCB design Hardware debugging and optimization Product redesign and cost optimization ✅ Embedded Systems & Firmware Expertise Worked with 8-bit, 16-bit, and 32-bit microcontrollers from: Texas Instruments Microchip / Atmel STMicroelectronics NXP Espressif Nordic Semiconductor Strong hands-on experience with: UART I2C SPI ADC / DAC RTC Timers MMC and related interfaces ✅ Wireless Technologies Bluetooth Low Energy (4.0 / 4.2 / 5) Wi-Fi Zigbee MiWi GSM (2G / 3G / 4G) GPS Sub-GHz RF ✅ End-to-End IoT Development Along with hardware and firmware, I also support complete IoT ecosystem development through my team, including: Android and iOS mobile apps Web dashboards Backend / server development Cloud-connected IoT systems ✅ Industries & Solutions I have worked on products related to: Industrial automation IoT and connected devices Smart agriculture Energy and power systems EV charging solutions Fuel / gas dispensing systems Consumer electronics Wireless embedded products Whether you need PCB design, embedded hardware, firmware development, wireless integration, or a complete IoT solution, I can help turn your idea into a reliable working product.

Hello! If you need an Electrical Hardware Design Engineer to take your idea and walking it through full cycle PCBA/System development from the proof of concept to fully functional prototype, that's me. I've been doing electronics work for the last couple of years, specifically rapid prototype development of tiny, wearable and battery operated devices, like earbuds, special purpose/medical watches, IoT and other devices required miniaturization efforts. I work with startups and understand stastups specifics - tight budget, fast turn-around times & a lot of uncertainty. I love what I'm doing: - Engineering Specification and Hardware Architecture Design; - BOM selection: low power consumption tiny MPUs and Audio DSPs (3.5mmx2.8mm with 0.35mm BGA pitch), small passives 01005 size, high efficient and battery operated switching regulators, tiny WiFi/BT chips and SoC; - Schematics Capture - experience with complex circuits and netlist, as small wearable; - PCB Layout for DFM - working with FAB houses in Asia and local to define high density layout rules, negotiating price and lead time the same time. I'm doing PCB Layout myself up to 8 layers and supervising CAD Team for more complex boards up to 32 layers - yes, I did it :-) Blind and laser via technics, power delivery planning, stackup definition, signal and power integrity rules, EMC/EMI. Tight component's placement and power noise decupling technics. Flex-rigid, flex and regular rigid boards from 0.11mm to 5.0mm thickness; - I have good sense of ME/PCBA integration in single device, worked closely with ME CAD Engineers and doing integration myself. My board's deliverables include 3D step file and all library. - Working on BOM procurement and kitting for proto build; - Working with FAB facilities to coordinate proto PCB fabrication - have direct local contacts and contacts in Asia - Working with PCBA facilities to assemble proto PCBAs - local and oversea; - PCBA's bring up, ME/PCBA integration, Firmware integration; - failure analisys and fixing issues; I'm working in the soul of Silicon Valley and have my own lab and tools to bring up prototype PCBAs, ME assembly/integration and firmware integration. Regular communication with my clients and vendors to sync and resolve technical issues as project management as well.

I specialise in challenging go-to-market projects, designing and developing devices, circuits and software where the assumptions are yet to be tested and specifications are early phase. Over 20 years I have delivered deep tech programmes for the MOD, NHS and delivered into clients including Abbott, J&J, PALL, and Fujifilm. My training in sensors, electronic circuit design, biochemistry and embedded AI edge systems will guide rapid progress. My PhD focused on machine learning of receptor structures for biosensing applications, combining electronics design, computational modelling of biological systems, and sensor development. Clients often arrive with an early-phase concept, a market need, and a scope that is unclear. My first job is to identify which assumptions actually matter, design the experiments that test them, and produce a proof of concept with real evidence behind it. For teams past that point, I take that foundation through full hardware development to a compliant, market-ready device with all the certificates of conformity. I build first prototypes in-house using my own prototyping equipment, without the cost or lead times of an external build house. I design and review electronic circuits and schematics, lay out PCBs in Altium Designer and KiCad, develop embedded firmware in C and C++, design and prototype wearables from concept through to enclosure in SolidWorks, and prepare the regulatory evidence required for CE marking, UKCA, and EU MDR submissions.

I'm an Electrical Controls Engineer with experience in automation. I'm experienced in designing automation equipment from conveyor systems, robot cells, enclosures, washers, fluid fill machines and many more. -Ability to use AutoCad Electrical, Eplan, and Solidworks Electrical for the purpose of electrical design -Project management throughout the entire lifecycle of any project -Ability to form standardization for the purpose of streamlining future design using ISO14001 -Bill of material generation -Part quoting -Ability to collaborate with other Engineers and Managers

From concept to tested prototype, I design high-performance PCBs and embedded systems for startups, engineers, and product teams who need results that work the first time. With 8 years of experience in embedded systems and hardware design, I specialize in creating production-ready electronics that are efficient, reliable, and built for scale. Whether you're developing a new product or improving an existing design, I bring the technical expertise and problem-solving mindset to get it done right the first time. 💡 What I Offer: 🔹 Embedded System Development: ARM Cortex, STM32, ESP32 🔹 Advanced PCB Design: From 2-layer to complex multilayer boards with BGA, RF, and high-speed signals 🔹 Cost-Effective Engineering: Focused on value without compromising quality 🔹 Rapid Prototyping: Helping you move from idea to working prototype quickly 🔧 Core Technical Skills: ✔️ Analog & Power Circuit Design: LED drivers, SMPS, sensor interfacing ✔️ Motor Control & Drive Systems ✔️ Signal Integrity & EMC/EMI-Conscious Design ✔️ Communication Protocols: RS232, RS485, I2C, SPI, UART, CAN ✔️ Firmware Development: Embedded C/C++ for real-time applications 🛠️ Tools & Platforms I Work With: 👉 Altium Designer – Industry-standard PCB design 👉 LTspice – Analog simulation & validation 👉 Proteus – Embedded system simulation 👉 Signal integrity tools and EMI/EMC testing preparation 🚀 Why Work With Me? ✨ Proven record of delivering on time and exceeding expectations ✨ Strong communicator who makes complex things simple ✨ Practical experience with certification-ready hardware ✨ Affordable, efficient, and results-oriented 🎯 Let’s Build Something That Works Whether you're launching a new product, troubleshooting a design, or scaling to production, I’m ready to help bring your vision to life with solid engineering and dependable execution. 👉 Check out my work: github.com/zainsiddiqui-zz 📩 Let’s connect and build your next success.

I am a senior electronics and embedded systems engineer with 47 years of experience in hardware design, firmware development, PCB layout, debugging, testing, and product development. I help clients turn electronic product ideas, prototypes, and hand-wired circuits into working embedded systems and manufacturable PCB designs. Typical projects I can help with include: * ESP32 and STM32 / STMicroelectronics MCU-based products * Power conversion and low-power battery-powered product design * Custom wireless and RF communications, including LoRa and ESP-NOW peer-to-peer networking * Circuit design and component selection for manufacturing * Schematic entry and multi-layer PCB design. * Ordering fabs and coordinating assembled boards. * C/C++ firmware for sensors, displays, audio, wireless, and control systems * Embedded graphics and touchscreen user interfaces using LVGL * Digital audio filtering, FFT spectrum analysis, and voice activity detection * Cloud API integration for speech-to-text, text-to-speech, and language translation * Embedded bus and peripheral interfaces: I2C, SPI, I2S, UART, RS-485, CAN, and SD/MMC * Prototype debugging and board bring-up * Converting breadboard prototypes into clean PCB designs * Design reviews before manufacturing * Analog and digital circuit troubleshooting * Production-oriented improvements for reliability and manufacturability I have founded and managed engineering companies and consulting firms, led technical teams, and helped bring electronic products from initial concept through prototype, testing, manufacturing, and production. For clients, this means fewer design mistakes, faster debugging, lower development risk, and a clearer path from concept to a working, manufacturable product.