Embedded C Developer

Tekskills Inc.; Chennai; On-site; INR 1,500,000 - 2,100,000; Full time

Job summary

Tekskills Inc. in Chennai seeks a seasoned embedded firmware engineer to own end-to-end firmware development for IoT products. You will design, implement, debug, and optimize low-level drivers and RTOS-based architectures in multi-disciplinary teams.

The ideal candidate has 5+ years of hands-on experience with STM32, ESP32, CAN/LIN, MQTT, BLE, and secure bootloaders, plus strong debugging and validation skills and exposure to large-scale deployments.

Qualifications

• 5+ years of embedded firmware development experience in IoT/industrial domains.
• Hands-on with RTOS-based architecture and driver development (STM32, ESP32).
• Experience in secure bootloaders, OTA updates, and cryptography.
• Familiar with MISRA-C and IEC 61508 standards.
• Exposure to multi-disciplinary teams and global projects.

Responsibilities

• Develop low-level drivers for sensors and peripherals with efficient debugging and optimization.
• Design and implement end-to-end firmware lifecycle architecture: design, coding, debugging, validation, deployment.
• Deliver production-grade embedded/IoT software for large-scale deployments.
• Collaborate with hardware, cloud, and mobile app teams across global client projects.
• Adapt to startup culture and fast-paced R&D environments.

Skills

C

Embedded C

Python

RTOS design

CAN

LIN

MQTT

BLE

Wi-Fi

I2C

SPI

UART

AES

RSA

ECC

MISRA-C

IEC 61508

JTAG

Git

Makefile

CMake

Tools

JTAG/SWD

Oscilloscopes

Logic Analyzers

BusMaster

PCAN

Protocol analyzers

CI/CD pipelines

Job description

Job Summary

Experience: 5+ years. Immediate joiners.

Responsibilities

• Development of low-level drivers for sensors, motor drivers, and peripherals with proven debugging and optimization expertise.
• Hands-on expertise in end-to-end firmware lifecycle architecture, design, coding, debugging, validation, and deployment.
• Strong track record of delivering production-grade embedded/IoT products with large-scale field deployments.
• Exposure to global clients/projects and working in multi-disciplinary teams (hardware, firmware, cloud, mobile app integration).
• Familiarity with startup culture and fast-paced R&D environments will be an added advantage.

Technical Skills

• 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.