Embedded Firmware Engineer

Tekskills Inc.; Kolkata District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Tekskills Inc. seeks an experienced embedded firmware engineer with 5+ years in C and Embedded C, strong RTOS-based design, and extensive protocol knowledge. You will drive real-time scheduling, inter-task communication, and low-level driver development for multi-platform MCUs (STM32, ESP32, Renesas, NXP).

Security features, debugging, and deployment across large-scale IoT projects are core focus areas. You will collaborate with hardware, cloud, and mobile teams in a fast-paced R&D environment,

Qualifications

• Expert in C and Embedded C with Python scripting for automation.
• Strong RTOS experience (FreeRTOS, ThreadX, Zephyr) and real-time scheduling.
• Proficient with a wide set of communication interfaces and MCUs.
• Experience in low-level drivers, security features, and debugging.
• MISRA-C, IEC 61508 knowledge; strong code reviews.

Responsibilities

• Develop end-to-end embedded firmware for IoT/industrial domains.
• Create and optimize device drivers for sensors, motors, and peripherals.
• Implement secure bootloaders, OTA updates, and cryptographic features.
• Collaborate with hardware, cloud, and mobile teams in multi-disciplinary projects.
• Lead debugging, validation, and deployment across field deployments.

Skills

C

Embedded C

Python scripting

RTOS design

Real-time scheduling

Inter-task communication

CAN

LIN

Modbus

MQTT

BLE

Wi-Fi

I2C

SPI

UART

RS-485

Ethernet

STM32

TI Hercules

NXP

ESP32

Renesas

low-power design

memory optimization

MISRA-C

IEC 61508

CI/CD

Git

Jenkins

Secure bootloaders

OTA updates

encryption

debugging

BusMaster

protocol analyzers

Tools

JTAG/SWD

Oscilloscopes

Logic analyzers

PCAN

Protocol analyzers

Makefile

CMake

CI/CD pipelines

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.