Embedded Firmware Engineer

Tekskills Inc.; Bengaluru; On-site; INR 1,500,000 - 3,000,000; Full time

Job summary

Tekskills Inc. in Bengaluru is seeking an experienced embedded firmware engineer to design and deliver mission-critical software for IoT and industrial systems.

You will work across hardware, firmware, and cloud interfaces to implement robust, secure solutions. The role requires strong C and Embedded C skills, RTOS experience (FreeRTOS/ThreadX/Zephyr), MCU knowledge (STM32, ESP32, Renesas), and hands-on debugging with JTAG/SWD.

Qualifications

• Expert in C and Embedded C with Python scripting for automation.
• Strong RTOS experience (FreeRTOS/ThreadX/Zephyr) and real-time scheduling.
• Proficient with CAN, LIN, Modbus, MQTT, BLE, Wi-Fi, I2C, SPI, UART, RS-485, Ethernet.
• Deep knowledge of MCUs: STM32 (F7, L4), TI Hercules, NXP, ESP32, Renesas.
• Experience developing low-level device drivers and middleware.
• Secure bootloaders, OTA updates, AES/RSA/ECC, watchdogs, fail-safes.
• Familiar with MISRA-C and IEC 61508.
• 5+ years in embedded firmware for IoT/industrial/energy/telecom.
• Mentoring and collaboration in multi-disciplinary teams.

Responsibilities

• Design and implement end-to-end firmware architecture and lifecycle.
• Develop and optimize device drivers for sensors and peripherals.
• Debug, validate, and deploy firmware with CI/CD pipelines.
• Collaborate with hardware, cloud, and mobile teams.
• Mentor junior engineers and contribute to technical strategy.

Skills

C programming

Embedded C

Python scripting

RTOS design

CAN

I2C

SPI

UART

BLE

Wi-Fi

JTAG/SWD

Low-power design

Debugging tools

Git CI/CD

MISRA-C

Security concepts

Tools

JTAG/SWD

BusMaster

PCAN

Job description

Requirements

• Programming Languages: Expert in C, Embedded C, with working knowledge of Python for scripting, automation, and test harness development.
• Firmware Architecture: Strong experience in RTOS-based design (FreeRTOS, ThreadX, Zephyr, or similar), real-time scheduling, interrupt handling, and inter-task communication.
• Protocols & Communication Interfaces: Proficient in CAN, LIN, Modbus, MQTT, BLE, Wi-Fi, I2C, SPI, UART, RS-485, and Ethernet.
• MCUs & Platforms: Deep knowledge of STM32 (F7, L4 series), TI Hercules, NXP, ESP32, Renesas, and similar microcontrollers.
• Device Drivers & Middleware: Development of low-level drivers for sensors, motor drivers, and peripherals with proven debugging and optimization expertise.
• Security & Reliability: Experience implementing secure bootloaders, OTA updates, encryption (AES, RSA, ECC), watchdogs, and fail-safe mechanisms.
• Debugging & Validation Tools: Proficiency with JTAG/SWD, oscilloscopes, logic analyzers, BusMaster, PCAN, and protocol analyzers.
• Version Control & Build Tools: Strong experience with Git, Makefile, CMake, Jenkins, and CI/CD pipelines for firmware release cycles.
• Compliance & Standards: Knowledge of MISRA-C, IEC 61508, and structured code reviews.
• Optimization Expertise: Skilled in low-power design, memory optimization, and real-time performance tuning for mission-critical applications.
• Experience: 5+ years of proven industry experience in embedded firmware development, preferably in IoT, industrial automation, energy, or telecom domains.
• Hands-on expertise: End-to-end firmware lifecycle architecture, design, coding, debugging, validation, and deployment.
• Delivery track record: Strong track record of delivering production-grade embedded/IoT products with large-scale field deployments.
• Mentoring & collaboration: Experience in mentoring junior engineers, reviewing code, and contributing to technical strategy.
• Exposure: Global clients/projects and working in multi-disciplinary teams (hardware, firmware, cloud, mobile app integration).
• Startup culture: Familiarity with startup culture and fast-paced R&D environments will be an added advantage.