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I am a Senior Embedded Firmware Engineer with 11+ years of hands-on experience designing, developing, and optimizing reliable firmware for connected and embedded systems. I specialize in wireless communication technologies, low-level firmware, and embedded Linux, delivering production-ready solutions for consumer, industrial, and IoT products. 🔹 Core Expertise Wireless Technologies: Wi-Fi, Bluetooth Low Energy (BLE), Zigbee, Thread, Mesh networking Operating Systems & Platforms: Bare-metal, FreeRTOS, Embedded Linux Microcontrollers & SoCs: ESP32, STM32, Nordic NRF series, Renesas MCUs Application Processors: NXP i.MX 6UL, i.MX 8 series 🔹 Embedded Linux & Low-Level Development Linux device driver development Linux user-space application development Bootloader development and customization (U-Boot) Board bring-up, BSP development, and hardware debugging Experience with Yocto / Buildroot based systems 🔹 What I Deliver Clean, scalable, and well-documented firmware Robust wireless connectivity with optimized performance and power consumption End-to-end development: from board bring-up to production firmware Debugging and optimization using JTAG, logic analyzers, oscilloscopes Strong focus on stability, security, and long-term maintainability 🔹 Additional Strengths Deep understanding of MCU peripherals, memory optimization, and low-power design Experience working with cross-functional teams (hardware, QA, manufacturing) Comfortable with Agile development and version control (Git) Ability to quickly understand legacy code and improve existing systems If you’re looking for a reliable senior embedded engineer who can take ownership of your product and deliver high-quality firmware on time, I’d be happy to discuss your project.

# Embedded Systems | Firmware | IoT | Electronic Product Development We help startups, small businesses, and companies turn their ideas into real electronic products. From the first idea and prototype to final manufacturing, we handle the complete process. We have strong experience in embedded systems, firmware, hardware design, and electronics manufacturing. Our goal is to build reliable, high-quality, and cost-effective products while keeping development simple and efficient. ## Our Expertise * Embedded Systems Design (8-bit, 16-bit, 32-bit Microcontrollers & FPGA) * Embedded Firmware & Software Development * PCB Design, Hardware Development & Prototyping * IoT Solutions (Consumer & Industrial) * Industrial & Factory Automation * Smart Home & Home Automation * Power Electronics & Solar Devices * Medical & Diagnostic Devices * Scientific & Test Equipment * Wireless Communication & Telemetry Systems * Consumer Electronics * Product Improvement & Design Optimization * Electronics Manufacturing Services (EMS) ## Our Services * Custom Electronic Product Design & Development * Embedded Firmware Development * Hardware & PCB Design * Prototype Development & Testing * Manufacturing Support * Desktop & Mobile App Development * Technical Consulting & System Design * Testing, Debugging & Performance Improvement ## Why Work With Us? ✔ Complete end-to-end development ✔ Ready-for-production hardware and firmware ✔ Cost-effective and efficient solutions ✔ Fast prototyping and quick updates ✔ Support for manufacturing and supply chain ✔ Clear communication and on-time delivery Whether you want to build a new product, improve an existing one, create an IoT solution, or prepare your design for manufacturing, we can help at every step. Let’s turn your idea into a real, reliable product.

Firmware, Embedded systems software, C/C++/Assembly, BLE, Sub-GHz, LoRA, Wi-Fi, Thread, Matter, Zigbee, IoT, BLE Mesh network, various MCU's, Zephyr nrf connect sdk, stm32 sdk, various ble sdk

** I am what I am because of what we all are. ** I am a self-motivated, hard-working, and open-source contributor. I am also an Android Enterprise Certified Professional. My GitHub handle is *amsurana* Mobile experience [since 2009] * Worked on Qualcomm, Mediatek, Amlogic, Rockchip based devices. * Qualcomm Secure Boot, Mediatek Secure Flash & Boot Support. * Porting and Writing Device Drivers * Customizing Android Kernel * Android Automotive OS Expert - Projects and Consulting. Ported Automotive OS to RPI. * Android Firmware development for all kind of Devices [PCBA, Phones, Tablet, TV, Accessories] * Android SDK/NDK * Android Wearable * Custom ROM - I have deep experience in customizing Android and modifying the entire OS experience as per the requirements. Some of the customizations I have done - changing boot animations, modifying shutdown screen, removing bloatware, developing system-level apps, making a tablet a Kiosk (without permissions), Bluetooth stack modification, Carrier config updates, and many more. * Secure OS - Make your Android ultra-secure. * OTA for A/B Seamless or Non-AB devices * Secure Android OS using AVB Tool * MDM, EMM, Mobile Device Management - If you plan to use MDM or develop your MDM, do reach out to me. I have experience in Airwatch, SOTI, ScaleFusion, Gears42, and FieldX. Special Skills: Z-wave, Zigbee, IoT, Amazon Alexa, Google Home Assistant, Smarthome, IFTTT Keywords - Android, Web, Social Media Integration, Java, J2EE, Bluetooth, BlueZ, DBus, AOSP, Custom ROM, Docker, Play Framework, Linux, AWS, EC2, MongoDB, Eclipse, Cyanogen mod, LineageOS Android TV, Android OS, Custom ROM, Tizen, LinegaeOS, RaspberryPi, OrangePi, Khadas VIM, HiKey, Amlogic, Rockchip, Airwatch, SOTI, MDM, EMM, Pentest, Penetration Testing, Qualcomm, Mediatek

I help companies design, develop, debug, and productionize reliable embedded products - especially when the challenge involves Bluetooth Low Energy, battery life, device security, wireless connectivity, or complex firmware. I have 17+ years of embedded systems experience and lead ByteSpectrum Technologies. I remain directly involved in architecture, firmware development, debugging, technical decisions, and client communication. When required, I can bring additional ByteSpectrum hardware or mobile expertise into the project. Architecture → Hardware Bring-up → Firmware → Connectivity → Security → Validation → Production → Field Support ━━━━━━━━━━━━━━━━━━━━ 🏆 VALIDATED ENGINEERING RESULTS ━━━━━━━━━━━━━━━━━━━━ → 7 days of operation from a 19 mAh rechargeable battery → ~6 months of operation from a single coin cell → 250-node self-forming, self-healing wireless mesh network → 210-cell / 756 V EV battery-management architecture ━━━━━━━━━━━━━━━━━━━━ 🎯 CORE EXPERTISE ━━━━━━━━━━━━━━━━━━━━ 🔵 Bluetooth Low Energy (BLE) Extensive experience with Nordic nRF52 / nRF53 / nRF54, TI, and Silicon Labs platforms. • Custom GATT services • Sensor and high-rate data streaming • Secure pairing / bonding • BLE provisioning • OTA / DFU • Multi-device communication • BLE gateways • Custom BLE / multiprotocol mesh networks 🔋 Low-Power Embedded Systems Battery-powered wearables, healthcare devices, trackers, and sensors using: • Deep sleep and event-driven firmware • Sensor-based wake-up and ULP techniques • Battery profiling and power optimization 🔐 Embedded Device Security Security architecture and implementation including: • Secure BLE • Device-specific key provisioning • X.509 certificate provisioning • TLS / DTLS • Application-level encryption • Protected credential storage • Firmware validation and secure OTA ━━━━━━━━━━━━━━━━━━━━ 💻 EMBEDDED FIRMWARE DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━ Production-grade C/C++ development across Bare Metal, FreeRTOS, Zephyr, ThreadX, and Embedded Linux. • Device drivers, BSP, and bootloaders • OTA / FOTA • RTOS architecture • Sensor and peripheral integration • Board bring-up and prototype validation • Diagnostics, logging, and CPU/task profiling • Performance optimization • Long-duration testing • Production and field debugging ━━━━━━━━━━━━━━━━━━━━ 📡 IoT & MULTI-CONNECTIVITY ━━━━━━━━━━━━━━━━━━━━ Experience developing connected products and gateways combining: BLE | Wi-Fi | Ethernet | Cellular | LTE-M | NB-IoT | Zigbee | Thread | NFC | RFID | CAN | Modbus Typical systems include: • BLE-to-cloud gateways • Multi-device BLE aggregation • Ethernet/Wi-Fi with cellular fallback • Local socket communication • Device provisioning • Secure remote connectivity • Gateway and connected-node OTA ━━━━━━━━━━━━━━━━━━━━ 🌐 INDUSTRIAL ETHERNET & NETWORKING ━━━━━━━━━━━━━━━━━━━━ Hands-on experience with STM32H7 + ADIN2111 based 10BASE-T1L / Single Pair Ethernet systems. • Daisy-chain / line topology • Ethernet ring redundancy • IPv4 / IPv6 • lwIP / NetX Duo • FreeRTOS / ThreadX • Multi-node communication • UDP diagnostic protocols • Browser-based diagnostics • Network performance profiling • Long-duration validation ━━━━━━━━━━━━━━━━━━━━ ☁️ AWS IoT & CLOUD CONNECTIVITY ━━━━━━━━━━━━━━━━━━━━ Strong device-side AWS IoT Core integration experience: • MQTT / MQTTS • X.509 certificates • Device profiles and credentials • Provisioning • Telemetry and remote commands • Secure device-to-cloud communication ━━━━━━━━━━━━━━━━━━━━ 🏭 PRODUCT EXPERIENCE ━━━━━━━━━━━━━━━━━━━━ • Wearables & healthcare devices • ECG and physiological monitoring • Sports & fitness technology • Industrial IoT systems • Smart metering • IoT and cellular gateways • Asset tracking • Automotive & EV electronics • Battery Management Systems • Home automation • BLE / ANT / Zigbee / Thread networks • 10BASE-T1L industrial networks ━━━━━━━━━━━━━━━━━━━━ ⚙️ PLATFORMS & FRAMEWORKS ━━━━━━━━━━━━━━━━━━━━ Nordic: nRF52 | nRF53 | nRF54 | nRF91 Espressif: ESP32 | S2 | S3 | C3 | C6 | H2 Others: STM32 | Silicon Labs EFR32 / EFM32 / BGM | NXP | TI Wireless MCUs | Raspberry Pi | BeagleBone ESP-IDF | nRF Connect SDK / Zephyr | nRF5 SDK | Gecko SDK | FreeRTOS | ThreadX | Embedded Linux ━━━━━━━━━━━━━━━━━━━━ 🚀 HOW I CAN HELP ━━━━━━━━━━━━━━━━━━━━ ✅ Develop a new embedded product ✅ Move a prototype toward production ✅ Debug and stabilize existing firmware ✅ Improve BLE reliability or throughput ✅ Optimize battery life ✅ Implement secure provisioning and OTA ✅ Develop IoT gateways and multi-connectivity devices ✅ Solve hardware/firmware integration issues ✅ Perform board bring-up and prototype validation ✅ Investigate difficult field and long-duration reliability issues ━━━━━━━━━━━━━━━━━━━━ I am most valuable when the challenge is not simply writing code, but understanding why the complete embedded system behaves the way it does - and making it reliable in real-world use.

To provide a leading Role as a Technical Architect in the field of IT