Hire the Best IOTA Freelancers in Karachi, PK

⚙️ I turn silicon and specs into smart, stable, and scalable embedded solutions. I engineered a 30% improvement in firmware responsiveness across connected devices, helped reduce development time by 25% for a FreeRTOS based ESP32 product line, and built modular driver architectures that made it easier for hardware teams to scale from prototype to production, all while keeping performance rock-solid in the field. As an Embedded Firmware Developer & Embedded Systems Specialist with 7+ years of experience, I design and build fast, reliable, and maintainable embedded software and microcontroller firmware for IoT and industrial products using ESP32 / STM32 / nRF52, FreeRTOS, ESP-IDF, and ARM Cortex-M architectures. 💼 What I Offer: 🔹Production-grade microcontroller firmware using C/C++ for MCUs and SoCs (ESP32, STM32F4, nRF52, ATSAM4, etc.) 🔹FreeRTOS / ESP-IDF-based systems, leveraging multi-threaded architectures for improved efficiency 🔹Advanced sensor & peripheral drivers, integrated into complex hardware ecosystems 🔹Communication stacks built on SPI, I2C, UART, BLE, MQTT, CAN, USB, Ethernet 🔹Smart devices & cloud-connected IoT products using the Espressif ESP-IDF framework 🔹Industrial automation firmware and embedded Linux/AOSP customizations (Yocto, HALs, board bring-up) 🔹Thorough documentation & end-to-end support for internal and external stakeholders 🛠️ What I’ve Been Delivering When most teams reach out to me, they already have hardware in hand, what they don’t have is firmware they can trust in the field. So I come in, analyze what’s running, and turn “demo” firmware into production ready systems. That means: ✔ Optimizing edge-device firmware so it stays stable, responsive, and power-efficient ✔ Customizing AOSP / Embedded Linux platforms for real-world products (HMI panels, smart displays) ✔ Writing and integrating drivers for complex sensors and peripherals ✔ Handling board bring-up, BSP development, bootloaders, and kernel-level debugging ✔ Providing long-term maintenance to keep real-time systems healthy in industrial, consumer, and automotive environments My role is simple: make sure your embedded product behaves perfectly not just on your bench, but in your customer’s hands. 💻Embedded Systems Expertise Languages: C, C++, Python (tooling & scripting) MCUs & SoCs: ESP32, STM32 (F0/F4), nRF52, ATSAM4, ARM Cortex-M OS & Frameworks: FreeRTOS, ESP-IDF, Zephyr, Yocto, Buildroot Connectivity & Protocols: SPI, I2C, UART, CAN, BLE, MQTT, Ethernet, USB Tools: GCC, OpenOCD, JTAG/SWD, Logic Analyzers, Git, Jira If you’re building something that doesn’t fit the usual embedded mold, I’d be glad to hear about it. Some of my best work has come from partnering with teams tackling problems that require a custom-crafted solution. Let’s connect and take your project to the success it deserves.

From prototype to production I build complete IoT and embedded systems that work in the real world, not just on a breadboard. With 5+ years of experience and 150+ projects delivered across aviation, agricultural, automotive, industrial and smart home applications, I handle the full stack: firmware, PCB design, cloud integration, and deployment. You get one engineer who owns the whole product not "three freelancers patching each other's work." What I build: Embedded firmware for ESP32, STM32, Raspberry Pi, Arduino, ATmega, and NRF52 including OTA updates, low-power optimization, watchdogs, and protocol stacks (UART, SPI, I2C, CANbus, RS485, Modbus). End-to-end IoT systems with Wi-Fi, BLE, LoRa, Zigbee, GSM, and NB-IoT connectivity, integrated with AWS IoT Core, Firebase, ThingsBoard, Node-RED, MQTT, and REST APIs. PCB design up to 3 layers using Altium, KiCad, and EasyEDA covering power supply, sensor interfacing, EMI/ESD protection, prototyping, and validation. Custom cloud dashboards and platform integrations: Grafana, Blynk, Home Assistant, ESP Rainmaker, and custom HTML/API solutions. Industries I've worked in: - Aviation (Solar powerd Aviation lights control) - Industrial IoT - Agriculture and Hydrophonics - Smart building automation - Automotive How I work: I communicate at every milestone, write clean modular code built for production (not just demos), and deliver on time. I'm open to NDA for any project requiring confidentiality. If you're building a smart device, an industrial automation system, or a connected hardware product, message me with your idea and we can scope it out in a quick call.

Need hardware that actually works in the field? I design PCBs and write embedded firmware for ESP32, STM32, Arduino and Raspberry. From schematic to production-ready prototype. Having 25+ years of hands-on experience. Clean layouts, stable firmware, and real-world tested results." I’ve worked extensively with microcontrollers, processors SOCs and development boards. My work includes 𝗲𝗺𝗯𝗲𝗱𝗱𝗲𝗱 𝗰𝗼𝗻𝘁𝗿𝗼𝗹𝗹𝗲𝗿𝘀, 𝗜𝗼𝗧 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗰𝗶𝗿𝗰𝘂𝗶𝘁𝘀, and wireless communication setups such as 𝗪𝗶-𝗙𝗶, 𝗕𝗟𝗘, 𝗟𝗼𝗥𝗮, and 𝗚𝗦𝗠. 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵: • PCB design (KiCad, EasyEDA, Altium) • Firmware development in C/C++ • ESP32/STM32 projects • Sensor automation & motor/servo control • MQTT/Firebase IoT dashboards • Long-range wireless communication • Converting ideas into working prototypes My approach is 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹 𝗮𝗻𝗱 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲-𝗱𝗿𝗶𝘃𝗲𝗻. I focus on clean 𝗰𝗶𝗿𝗰𝘂𝗶𝘁 𝗱𝗲𝘀𝗶𝗴𝗻, 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲𝗱 𝗳𝗶𝗿𝗺𝘄𝗮𝗿𝗲, and proper debugging to ensure 𝗹𝗼𝗻𝗴-𝘁𝗲𝗿𝗺 𝘀𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆. If you need a senior engineer who understands electronics from the 𝗳𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻 𝗹𝗲𝘃𝗲𝗹 and can deliver a 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲, 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻 then i am your guy.

Top Rated Plus Embedded Hardware & Firmware Engineer with 8+ years of experience building reliable embedded products, IoT systems, and production-ready electronics. I help startups, product teams, and manufacturers take an idea, prototype, or broken design and turn it into a working embedded product that can be tested, manufactured, and scaled. My work connects hardware, firmware, and real-world product execution. Instead of treating the circuit, code, sensors, connectivity, power system, enclosure, and manufacturing process as separate pieces, I help bring them together into one reliable product. WHAT I BUILD • Custom schematic and PCB design for reliable embedded hardware • Embedded firmware development in C/C++ for real-world products • ESP32, STM32, Nordic, Arduino, Raspberry Pi, and Embedded Linux platforms • BLE, Wi-Fi, LTE, Cat-M1, NB-IoT, LoRa, NFC, GPS/GNSS, and sensor integration • Low-power electronics, battery-powered devices, BMS, and power management • Industrial interfaces including UART, SPI, I2C, RS-485, CAN, Modbus, ADC/DAC, and GPIO • Board bring-up, debugging, firmware validation, and hardware troubleshooting • BOM preparation, Gerber files, assembly files, DFM review, and manufacturing support I have worked across wireless IoT devices, wearable and medical electronics, industrial monitoring systems, automation hardware, smart sensors, connected consumer products, and custom embedded controllers. WHY ONE TECHNICAL OWNER Clients usually come to me when they need more than a schematic or a firmware file. They need someone who can understand the complete system, identify risks early, solve hardware and firmware integration issues, and move the product closer to production. I also lead a full-service engineering team when projects require additional support across mechanical enclosure design, cloud integration, mobile app development, product design, or manufacturing coordination. This gives clients one technical owner while keeping the embedded hardware and firmware work technically grounded. Tags: Electronics engineering , Electrical Engineer, Electrical Engineering, Electronics, Hardware, Firmware, PCB, PCB layout, Board Layout, Schematics, Altium Designer, IoT, Internet of Things, Power Electronics, Bluetooth, BLE, TI, Texas Instruments, C, C++, MCU,RTOS, Microcontroller, prototype, validation, Enclosures, BMS, Android, iOS, Java, Swift, Mobile Apps, Database, React, AWS, Python, ESP32, Arduino, PLATFORMIO, PIC, NXP, Texas Instrument, Nordic, DIALOG, STM32, LCD, Raspberry Pi, Oil and Gas Automation,RF, XBEE, Wi-Fi, BLE, Production, Prototyping, LoRa WAN, Manufacturing, Assembly, Motor Driver, Prototype, Wireless Module, Controllers, EASY EDA, KiCAD. READY TO BUILD? Send me your requirements, target platform, connectivity needs, power constraints, current design files, and production volume. I’ll respond with a clear technical scope within 24 hours. Warm Regards, Shan Ahmed Usmani