Embedded Developer

InfoVision Inc.; Bengaluru; On-site; INR 1,800,000 - 3,000,000; Full time

Job summary

InfoVision Inc. seeks an experienced embedded C engineer with 5–8+ years of hands-on work to own production firmware subsystems. You will work with RTOS (ThreadX preferred) and develop robust MCU-level routines, sensor interfacing, and low-level debugging.

Expertise in MQTT IoT protocols, AT interfaces, and secure firmware updates is essential. Bring-up of new chips from reference manuals and mentoring teammates are key parts of the role.

Qualifications

• 5–8+ years of embedded C development with ownership of production firmware subsystems.
• Deep RTOS experience (ThreadX preferred; or FreeRTOS/Zephyr/embOS).
• Strong MCU fundamentals: interrupts, memory maps, linker scripts, sensor interfacing.
• Ability to bring up new chips from reference manuals and existing code.

Responsibilities

• Inherit and support firmware not originally written by you; debug and understand behavior.
• Debug low-level issues: memory corruption, race conditions, watchdog and sensor faults.
• Contribute to firmware architecture, review code, and mentor junior engineers.
• Work with IoT protocols (MQTT) and device management interfaces.

Skills

Embedded C

RTOS (ThreadX)

MCU fundamentals

Sensor interfacing I2C/SPI

Firmware debugging

MQTT / IoT protocols

FOTA / secure updates

AT command interfaces

Code review & mentoring

Reverse engineering code

Education

B.E./B.Tech in Electronics & Communication or related field

Tools

Quectel BG96/BG95

Telit M2MB

LLVM/Clang & GCC ARM toolchains

Job description

• 5–8+ years of embedded C development, with demonstrated ownership of production firmware subsystems
• Deep RTOS experience (ThreadX strongly preferred; otherwise FreeRTOS/Zephyr/embOS with willingness to ramp up)
• Strong MCU/embedded fundamentals independent of any single vendor SDK: interrupts, memory maps, linker scripts, peripheral register-level programming, sensor interfacing (I2C/SPI), and the ability to bring up understanding of a new chip/platform from its reference manual and existing code
• Demonstrated ability to inherit and support firmware you did not write — reverse-engineering intent from code, git history, and observed hardware/sensor behavior when documentation is incomplete
• Experience with IoT protocols: MQTT (pub/sub, QoS, keepalive tuning) and device management protocols (LwM2M, TR-069, or similar)
• Experience with cellular modem platforms (Quectel, Telit, or similar) and AT command interfaces
• Track record debugging low-level issues: memory corruption, race conditions, watchdog/reset analysis, sensor/MCU communication faults
• Experience with FOTA/firmware update design and secure boot/update integrity
• Strong code review and mentoring skills

Education

• Bachelor's degree (B.E./B.Tech) in Electronics & Communication Engineering (ECE), Electrical Engineering (EE), Computer Science, or a related field — or equivalent practical experience

Nice to Have

• Direct experience with the DALI lighting control protocol or Zhaga interoperability standards
• Experience with tilt/accelerometer sensors or other environmental sensor integration in outdoor IoT products
• Direct experience with Quectel BG96/BG95 (QAPI) and/or Telit M2MB platforms
• Experience with both LLVM/Clang and GCC ARM embedded toolchains
• Experience taking over/maintaining a codebase originally written by a different team or vendor