Embedded Software Engineer

HEX20; India; On-site; INR 900,000 - 1,300,000; Full time

Job summary

HEX20 is seeking a Mid-Level Embedded Software Engineer to independently design, implement, and debug firmware for real-time embedded systems built on Ferrets.

You will own features end-to-end, mentor junior engineers, and collaborate with hardware and QA teams during board bring-up and product validation. Strong C/C++, FreeRTOS, and debugging skills are essential for success in this role.

Qualifications

• 3–5 years of professional embedded software development experience.
• Hands-on experience with FreeRTOS and microcontroller-based systems.
• Strong C/C++ skills with memory management, concurrency, and real-time constraints.
• Experience with SPI, I2C, UART, CAN communications.
• Ability to read datasheets and schematics and perform low-level debugging.

Responsibilities

• Design and implement firmware modules and drivers for microcontroller-based products.
• Develop and maintain FreeRTOS-based applications: tasks, queues, semaphores, timers, memory management.
• Lead root-cause debugging of complex firmware issues across hardware and software boundaries.
• Optimize firmware for performance, power, and memory footprint.
• Define and execute unit, integration, and system-level test plans.
• Review code from junior engineers and provide technical mentorship.
• Collaborate with hardware and QA teams during board bring-up and product validation.

Skills

FreeRTOS

C/C++

Memory management

Debugging

Root-cause analysis

SPI/I2C/UART/CAN

JTAG/SWD

Concurreny/RT constraints

Code review

Tools

JTAG/SWD

Oscilloscopes

Logic analyzers

Git-based workflows

CI build systems

FreeRTOS

Job description

• Looking for a Mid-Level Embedded Software Engineer who can independently design, implement, and debug firmware for real-time embedded systems built on Ferrets.
• You will own features end-to-end, mentor junior engineers, and help improve the reliability of our embedded software stack.

Key Responsibilities

• Design and implement firmware modules and drivers for microcontroller-based products
• Develop and maintain FreeRTOS-based applications: tasks, queues, semaphores, timers, and memory management
• Lead root-cause debugging of complex firmware issues across hardware and software boundaries
• Optimize firmware for performance, power consumption, and memory footprint
• Define and execute unit, integration, and system-level test plans
• Review code from junior engineers and provide technical mentorship
• Collaborate with hardware and QA teams during board bring-up and product validation

Required Skills & Qualifications

• 3–5 years of professional embedded software development experience
• Strong debugging skills: JTAG/SWD, oscilloscopes, logic analyzers, and systematic root-cause analysis
• Practical, hands-on experience with FreeRTOS (task design, synchronization primitives, scheduling, memory management)
• Strong C/C++ skills with solid understanding of memory management, concurrency, and real-time constraints
• Experience with common communication protocols (SPI, I2C, UART, CAN)
• Comfortable working with datasheets, schematics, and low-level register access
• Experience with Git-based workflows and CI-friendly build systems

Preferred Skills

• Experience bringing up new hardware from schematic to working firmware
• Exposure to low-power design techniques and battery-powered embedded products
• Familiarity with bootloaders, OTA updates, or secure firmware update mechanisms
• Basic exposure to embedded Linux or Yocto