Senior Engineer - Embedded Junior And Mid-Level

Legrand; Thane; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

Legrand is seeking an experienced embedded software engineer to design firmware for IoT devices and gateways in a fast-paced environment. You will develop BLE and Zigbee applications, implement secure device-cloud communication, and build MQTT modules for scalable connectivity.

Responsibilities include OTA updates, firmware optimization, and active participation in architecture discussions and product certifications. A strong C/C++ background, RTOS, and embedded Linux experience are essential.

Qualifications

• Proficient in Embedded C/C++ for embedded devices.
• Strong understanding of Embedded Linux and RTOS environments.
• Experience with device drivers and multithreading.
• Knowledge of BLE/Zigbee, MQTT and TCP/IP protocols.
• Hands-on debugging and performance optimization.
• Familiar with Agile development practices.

Responsibilities

• Design embedded firmware for IoT devices and gateways.
• Develop BLE and Zigbee applications and secure device‑cloud communication.
• Create MQTT modules and implement OTA firmware updates.
• Optimize firmware performance and debug complex issues.
• Participate in architecture discussions and code reviews.
• Support product certification and lifecycle activities.

Skills

Embedded C

C++

Embedded Linux

RTOS (FreeRTOS/Zephyr)

Device driver development

Communication protocols

Git

Software architecture

Multithreading/Multitasking

Strong debugging

Agile methodology

Education

Bachelor's or Master's degree in Electronics, Computer Science, Electrical Engineering or related discipline

Tools

Jira

Confluence

VS Code

GDB

CMake

GCC

Wireshark

Logic Analyzer

Oscilloscope

Docker

Job description

Job Description:

Mandatory Skills

• Strong programming in Embedded C
• Good understanding of C++
• Embedded Linux
• RTOS (FreeRTOS/Zephyr)
• Device driver development
• Communication protocols
• Git
• Software architecture
• Multithreading/Multitasking
• Strong debugging
• Agile methodology

IoT & Connectivity Skills

• BLE
• Zigbee
• MQTT
• TCP/IP
• Wi-Fi
• Gateway architecture
• Device provisioning
• Device onboarding
• OTA firmware updates
• Cloud connectivity
• End-to-end IoT product development

Security Knowledge

• Secure Boot
• Secure Firmware Update
• TLS/SSL
• Certificate management
• Device authentication
• Encryption
• Authentication & Authorization
• Key management

Cloud Exposure

• AWS IoT Core / Azure IoT Hub / equivalent
• MQTT broker integration
• REST APIs
• Device Shadow / Digital Twin
• Cloud provisioning
• Telemetry
• Remote diagnostics
• Cloud command execution

Preferred Skills

• Matter
• Thread
• BLE Mesh
• Docker
• Python
• Shell scripting
• Wireshark
• Bootloader development

Good to Have

• CI/CD
• Static code analysis
• Unit Testframework

Tools

• Git
• Jira
• Confluence
• VS Code
• GDB
• CMake
• GCC
• Wireshark
• Logic Analyzer
• Oscilloscope

Soft Skills

• Ownership mindset
• Problem-solving
• Communication
• Cross-functional collaboration
• Ability to work independently

Strong debugging mindset

Roles & Responsibilities

• Design embedded firmware.
• Develop BLE and Zigbee applications.
• Implement secure device-cloud communication.
• Develop MQTT modules.
• Implement OTA firmware updates.
• Optimize firmware performance.
• Debug complex embedded issues.
• Participate in architecture discussions.
• Perform code reviews.
• Support product certification and own the product lifecycle.

Bachelor's or Master's degree in Electronics, Computer Science, Electrical Engineering or related discipline.