Back to search:Firmware Engineer / Jakarta (south)

Responsible for designing, developing, and maintaining bare‑metal firmware (primarily C++) for land telematics devices based on ESP32 and STM32 (open to other platforms). The focus includes vehicle data acquisition via CAN/CAN‑FD, connectivity management (GNSS, LTE/NB‑IoT, Wi‑Fi, BLE, Orbcomm ST9100 satellite), data communication (MQTT/HTTP with TLS/AT command), as well as reliability features (logging, buffering, OTA/DFU, diagnostics).

Responsibilities
  • Design, develop, and maintain bare-metal firmware (mainly C++) for ESP32 and STM32 based telematics devices.
  • Implement UART/SPI/I2C drivers/peripherals, timers, GPIO, ADC/DAC, storage (Flash/FRAM), and power management.
  • Integrate CAN/CAN‑FD (J1939/OBD‑II level implementation) including filters, frame parsing, and fault handling.
  • Integrate GNSS, 4G/LTE, NB‑IoT, Wi‑Fi, BLE, and Orbcomm ST9100 satellite connectivity via AT commands and/or TCP/UDP sockets, with TLS‑layered MQTT/HTTP protocols.
  • Build network‑disconnect‑resistant data logging & buffering modules, including timestamp synchronization and retry/persistence policies.
  • Develop bootloaders, secure OTA/DFU (delta/rollback), and diagnostics mechanisms (self‑test, health metrics, crash dump).
  • Write firmware architecture specs/diagrams, sequence diagrams, and API/protocol documentation; develop test plans and run unit/integration tests; prepare utility scripts (e.g., Python) for simulation/provisioning.
  • Collaborate closely with Embedded Hardware Engineers & Mechanical Engineers for DFM/DFT, and coordinate with QA/Backend teams for data integration.
Requirements and Skills
  • 3–5 years of experience in embedded firmware, focusing on telematics/automotive devices or similar domains.
  • Proficient in C/C++ for bare‑metal; understands memory concepts, interrupts, concurrency without RTOS, and performance optimization.
  • Strong experience with ESP32 (ESP‑IDF) and/or STM32 (HAL/LL/CMSIS).
  • CAN/CAN‑FD practices: filter configuration, frame parsing, error handling; familiar with J1939/OBD‑II at the implementation level.
  • Connectivity integration: GNSS, LTE/NB‑IoT/Wi‑Fi/BLE, satellite (Orbcomm ST9100) via AT command, sockets (MQTT/HTTP, TLS/certificate handling).
  • Mastery of UART/SPI/I2C peripherals, timer/RTC, watchdog, non‑volatile storage, and power management.
  • Experience with bootloader & OTA/DFU (rollback, versioning, integrity check).
  • Hardware debugging skills: oscilloscope, logic analyzer, CAN analyzer, J‑Link/ST‑Link.
  • Quality mindset: unit/integration testing, static analysis, code review, Git workflow; comfortable with YouTrack or similar.
  • Neat technical documentation; effective cross‑team communication (HW, Mechanical, QA, Backend).
Seniority Level

Mid‑Senior level

Employment Type

Full‑time

Job Function

Engineering and Information Technology

Industry

IT Services and IT Consulting

South Jakarta, Jakarta, Indonesia

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