REFU Drive - IoT Engineer

Description

Key Responsibilities

• Integrate and communicate with different devices including inverters, batteries, meters, and sensors through an edge gateway.
• Implement and manage device communication using industrial protocols such as Modbus (RTU/TCP) and other hardware communication standards.
• Develop efficient, scalable, and reliable data acquisition and publishing services.
• Publish device data securely to cloud platforms using MQTT and TCP/IP-based communication.
• Deploy and manage edge applications using AWS IoT Core and AWS Greengrass.
• Design and implement serverless backend components using AWS Lambda, DynamoDB, and related AWS services.
• Ensure secure connectivity using VPNs and secure networking practices.
• Work closely with hardware and firmware teams to validate communication, troubleshoot issues, and optimize performance.
• Support system deployment, commissioning, and field-level debugging when required.
• Maintain documentation and follow best practices for version control, CI/CD pipelines, and code reviews.
  

Technical Skills & Requirements

• Strong understanding of hardware communication protocols, including Modbus, MQTT, TCP/IP, and VPN-based networking.
• Proficiency in Python and C++ for developing gateway services and device drivers.
• Hands-on experience with AWS IoT Core, AWS Greengrass, and cloud-to-edge communication.
• Solid understanding of AWS Serverless architecture, including Lambda, DynamoDB, and event-driven systems.
• Experience working with energy management systems (EMS), renewable energy sources, and power electronics.
• Familiarity with Linux-based systems, including system services, networking, and debugging tools.
• Experience with sensor and bus communication systems such as I2C, SPI, and other low-level interfaces.
• Hands-on experience with embedded platforms like Raspberry Pi (RPI) and ESP32.
• Proficiency in Git, branching strategies, and CI/CD workflows.
• Strong analytical, troubleshooting, and problem-solving abilities.
  

Preferred Qualifications

• Experience in industrial or energy-domain IoT deployments.
• Knowledge of device security, certificate management, and OTA updates.
• Exposure to edge computing optimization and performance tuning.