Embedded Software Engineer

Mint And Oak; Mumbai; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Mint And Oak in Mumbai is seeking an Embedded Software Engineer specialized in Real-Time OS development for the Soundbox device. You will design, implement, and optimize an RTOS and low-level firmware in C/C++ for embedded hardware.

Collaborate with hardware and QA teams to ensure real-time performance, audio processing, and secure communication features, from OTA updates to payment alert integration, across production-ready deployments.

Qualifications

• 5+ years of RTOS development experience for embedded devices.
• Strong knowledge of C/C++ and real-time kernel internals.
• Experience with low-level I/O, interrupts, memory management and scheduling.
• Proficiency with Git, SVN and Jira for version control and issue tracking.

Responsibilities

• Design and develop custom RTOS for Soundbox from scratch.
• Integrate firmware with hardware platforms and microcontrollers.
• Develop low-level C/C++ code for peripherals and interrupts.
• Implement multi-threading to ensure real-time performance.
• Debug RTOS functionality and collaborate with hardware engineers.
• Test, optimize, and validate code for production requirements.
• Real-time audio processing with low latency and AudioTrack APIs.
• BLE/A2DP communication and audio codec integration.
• OTA updates, security (TLS/SSL) and RESTful interfaces.

Skills

RTOS design

C/C++

Real-time systems

Embedded software

JIRA

Education

BSc or Diploma in Computer Science

Tools

Git

SVN

JIRA

Job description

Job Summary

Embedded Software Engineer - Real-Time OS (RTOS) Developer

Mumbai

Full Time

Technology

Key Responsibilities

• Design and develop custom RTOS for the Soundbox device from scratch.
• Collaborate with cross-functional teams to integrate software components (firmware) into existing hardware platforms.
• Develop low-level code using C/C++ programming languages, leveraging microcontrollers peripherals and registers.
• Implement multi-threading support in real-time systems ensuring predictable system behavior under various loads and faults.
• Debugging RTOS functionality on the Soundbox device to identify issues and resolve them efficiently.
• Work closely with hardware engineers to ensure seamless integration of software components into existing boards.
• Test, validate, and optimize code to meet performance requirements in production environments.
• Real-time audio processing pipelines with low-latency output using the AudioTrack/AudioRecord APIs.
• Integrate a multilingual Text-to-Speech (TTS) engine for payment confirmation alerts.
• Bluetooth BLE/A2DP communication for wireless audio and device pairing.
• Speaker driver and audio codec integration at the hardware level.
• Cloud connectivity via MQTT and WebSocket for real-time payment notifications.
• OTA firmware update mechanisms with rollback support.
• Device provisioning, remote configuration, and lifecycle management.
• Integration of QR code and UPI payment flow with audio confirmation feedback.
• Kernel module development and ALSA audio framework on embedded Linux.
• CI/CD pipeline maintenance with ADB/fastboot for device flashing and debugging.
• Secure communication using TLS/SSL and RESTful API integrations.
• Ensure PCI-DSS and PCI PTS compliance throughout the development lifecycle.

Technical Skills and Experience

• Minimum 5+ years experience as an RTOS developer with expertise in designing real-time operating systems for embedded devices.
• Excellent understanding of real-time kernel internals and programming languages like C/C++
• Knowledge of low-level code development for I/O operations, interrupt handling, memory management and scheduling algorithms in RTOS design.
• Proficiency in source control systems like Git/SVN, issue tracking tools (JIRA).
• Strong communication skills to collaborate effectively with cross-functional teams including Software Engineers, Hardware Engineers and QA.

Qualifications

BSc degree/ Diploma in Computer Science or relevant field.