Hire the Best Firmware Engineers
in the United Kingdom

Hello, Everyone! I am an embedded systems engineer, PCB designer, and firmware developer with over 10 years of professional experience. I provide complete, end-to-end solutions for a wide range of electronic device designs, supporting clients from initial concept and schematic design to PCB layout, prototyping, assembly, and full system testing. I have strong expertise in high-speed PCB design, including PCIe and DDR4 routing, as well as precise impedance matching for reliable performance at high frequencies. I also specialize in RF and antenna design for modern IoT devices, ensuring optimal signal integrity and system efficiency. In addition, I have deep experience in ultra-low power design, achieving microamp and sub-microamp current consumption for battery-operated and wearable systems. I specialize in firmware development for LTE-GPS-LoRa-BLE-based embedded systems (nRF52 series), including low-power optimization and high-precision sensor acquisition. My focus is on delivering robust, production-ready solutions with high reliability and performance. 🔥 Main Skills 👉Embedded Systems 👉Schematic Circuit Design(Low Power consumption Design) 👉Firmware Development(All Microcontrollers-STM32, TMS320, ESP32, FPGA, nRF52, Raspberry PI) 👉PCB Design(High speed signal routing, PCIe, DDR4, 18 multi-Layers Design, RF antenna Design,) using Altium Designer, KiCad, EasyEDA, Fusion 360(No problem in DFM-JLCPCB) 👉IoT with nRF52(BLE), LoRa(for example, SX1262), LTE(SIM card interface), GPS and other variety of sensors 🛠️Tools & Technologies: 👉 nRF5 SDK / nRF Connect SDK 👉SEGGER Embedded Studio + J-Link debugging 👉 C/C++ (bare-metal & RTOS) 👉 BLE GATT, LTE AT commanders, custom wireless protocols 👉SPI / I2C / UART / ADC integration 👉Low-noise measurement systems (nA level) 👉STM32CubeIDE, Cube MX, Keil, CCS, Arduino, ... 👉MQTT, Free RTOS, Zephyr RTOS 🚀 I can support your project from concept to production.

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.

Hello. If we agree to go ahead with bringing your idea to life, you can be sure that: 🐌 I never take a project from a client if I'm not 101% sure how to do it. I tend to learn new things on my personal projects instead of wasting the client's time and money. 💼 The design documentation will be well-structured and tidy. 🎯 The schematic design and PCB layout will be done properly to pass the EMC. 💵 The design will be cost-effective by thoroughly selecting the components and not paying for something the project doesn't need. 🚀 The firmware in C will be designed to be predictable and reliable. 🏭The project will be designed with mass-manufacturability in mind. 🔩The prototype will be assembled and tested in-house using professional equipment. 🎮If required, some of the mechanical parts of your project can be designed using Fusion 360. ● I approach hardware and software design, focusing on reliability and performance in real-world conditions, not just on the desk. Leveraging my expertise as an electronics engineer, I ensure that all my designs pass EMC/EMI requirements. My work is built to withstand the demands of field deployment. Hi! Thank you for visiting my profile. I'm an Electronics Engineer with 7+ years of professional full-time experience and 13 years of hands-on hobbyist experience. My passion for electronics started when I was a kid, and it has driven me to develop an expertise in the hardware and software aspects of electronics engineering. ● My main specialisations are: Audio on low-cost devices, Battery-powered devices. ● I'm experienced with the following: Firmware design in C for ESP32, STM32, CH32V, 8051 MCU's Mixed-signal multi-layer PCBs. BOM optimisation. DC/DC Wi-Fi LoRa SPI, I2S, I2C, UART, CAN User interfaces using the LVGL graphics library RaspberryPi ● Software I use: KiCad for schematic capture and PCB layout(I've used Altium in the past). VSCode and CubeIDE for firmware. LTSpice for simulations. Autodesk Fusion 360 as MCAD. A bunch of other specialised software for calculations and simulations. Let's work together to bring your ideas to life.

Lead Design Engineer with Over 13 year experience of embedded systems, FPGA, C, Verilog HDL , MATLAB Similunk and VHDL using Xilinx/ Intel(Altera)and Microsemi tool chain. Microsoft Certified Data Scientist with 5 years of experience in Data Analytics and DevOps. Performed and automated ETL and Machine Learning operations. Deployed Machine Learning techniques to train, evaluate, and deploy models that solve business problems

Senior electronics and embedded firmware engineer delivering complete, production-ready systems. I take ownership of electronics development from architecture through schematic design, PCB layout, firmware, and validation. Most projects are delivered independently, with structured communication and clear documentation throughout. I work with companies that: - Need to outsource electronics or firmware development - Have an existing product that requires improvement, redesign, or scaling - Require senior-level engineering without hiring internally - Value predictability, accountability, and clean handover What I Deliver - End-to-end electronics engineering: schematic design, PCB layout, prototyping, and validation - Embedded firmware development (bare-metal and RTOS) - Design updates, feature additions, and legacy system improvements - Manufacturing-ready designs with clear documentation - Smooth collaboration with in-house engineers, mechanical teams, and manufacturers Industries & Systems I’ve worked on products and systems across: - Industrial electronics - IoT and connected devices - Consumer and professional hardware - Sensor-based and control systems My focus is always on robustness, maintainability, and real deployment, not just prototypes. Why Companies Choose Me - Senior experience: I work autonomously and require minimal supervision - Clear communication: technical clarity for both engineers and non-technical stakeholders - Production mindset: designs intended for manufacturing, testing, and long-term use - Proven reliability: Top Rated Plus, 100% Job Success, long-term client relationships Engagement Models - Long-term outsourced electronics engineer - Short-term support for critical milestones - Fixed-scope development or redesign projects If you need a dependable electronics engineer who can integrate quickly and deliver without friction, I’d be happy to discuss your project.

Embedded firmware development, bare-bone and linux based devices. Have done various projects involving IoT, WiFi, sigfox, AWS cloud, multiple sensors and microcontrollers. Also experienced in payments industry - EMV and PCI certification, NFC, L1, L2 kernels