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

Mintoak Innovations Private Limited; Mumbai; On-site; INR 1,200,000 - 1,500,000; Full time

Job summary

Mintoak Innovations Private Limited is seeking an Embedded Software Engineer specializing in Real-Time OS (RTOS) development. The candidate will design and develop custom RTOS for the Soundbox device, collaborating with multi-functional teams for seamless integration.

Ideal applicants should have a minimum of 5 years of RTOS development experience and be proficient in C/C++. Responsibilities include developing low-level code, ensuring system reliability, and optimizing performance.

This full-time position is based in Mumbai, Maharashtra, India and offers opportunities for professional growth.

Qualifications

• 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.

Responsibilities

• Design and develop custom RTOS for the Soundbox device from scratch.
• Collaborate with cross‑functional teams to integrate software components into existing hardware platforms.
• Develop low‑level code using C/C++ programming languages.

Skills

RTOS development

C/C++ programming

Bluetooth BLE/A2DP communication

Real-time audio processing

Cloud connectivity

Memory management

Education

BSc degree/Diploma in Computer Science or relevant field

Tools

Git/SVN

JIRA

Job description

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

Full Time •

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.
• Debug 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 and issue tracking tools (JIRA).< /li>
• 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.