Hello, I'm an embedded systems engineer who loves to build robust, highly readable, and maintainable firmware for embedded devices. I've been working on embedded systems for 7+ years now. Also, I've been working remotely for the last 3 years now, and I LOVE IT 🌟

• 2022-now. Working on a Low-Earth Orbit Satellite system to provide 24/7 IoT connectivity anywhere in the world.
• 2020-2022. Built tracker device to track heavy machinery such as excavators, and super big trucks. Developed firmware to run the devices 24/7 for years.
• 2019-2020. Built tracker device for humans. Using Bluetooth technology to track human movement (indoor) and presence.
• 2018-2019. Built a self-checkout machine for the biggest e-commerce startup in Indonesia.
• 2016-2018. Built the tiniest smartcard reader that can be attached to Android smartphones.

• Firmware Architecture Design. A very important step that many engineers missed. Without proper architecture design, your firmware will be destined to be super-hard to maintain and add features.
• Firmware Documentation. Without proper documentation, people will waste time to understand and follow your firmware.
• Firmware Testing. I love and use Test-Driven Development in my day-to-day work.
• Testing Automation. Usually I use CI/CD to deliver fast and good firmware without breaking existing code.
• Programming Language. I'm fluent in speaking embedded C and C++ (especially the modern version like C++11, C++17, and C++20). Also able to speak Python and C#.

• Wired Protocols
  • SPI
  • I2C
  • UART/USART
  • CXPI (fancy cutting-edge wired protocol for automotive, used by Toyota)
  • CAN bus
  • USB
  • Ethernet
  • I2S (Audio)
• Wireless Protocols
  • WiFi
  • Bluetooth Classic
  • Bluetooth Low Power (BLE)
  • LoRaWAN
  • NB-IoT
  • GSM/LTE
  • Visible-Light Communication (or VLC, I implemented it for my thesis back in the university)
  • NFC/RFID
• Network Protocols
  • TCP/IP
  • UDP/IP
• Security & Integrity
  • CRC32
  • MD5
  • AES
• Development Board bring-up
• Embedded Linux (still learning, mainly use Yocto)
• Embedded library development
• RTOS
  • FreeRTOS
  • Zephyr
• Microcontroller
  • ESP32 (dual core MCU + WiFi and Bluetooth)
  • ESP8266 (single core MCU + WiFi from Espressif)
  • STM32 L0, L1, L4, F1 series
  • AVR MCU
  • Texas Instrument CCxxxx series
• Hardware Development
  • Schematic Design
  • PCB design (still learning! I use KiCad)
  • Board assembly
  • Board testing
  • Power Profiling (to achieve low power, thus extending battery life)
• Electronic Equipment I Own
  • 4-channel Oscilloscope
  • Nice multimeter
  • Logic Analyzer

• LinkedIn. DM is always open!