Sr Software Engineer (IoT Gateway Application Developer)

Unidel Group; Pune District; On-site; INR 1,200,000 - 1,500,000; Full time

Job summary

A technology solutions company in Pune District is seeking a Senior Software Engineer with expertise in C/C++ and AWS. The role involves designing and developing IoT applications and gateways, ensuring robust cloud integration and security, and maintaining high-quality technical documentation. Ideal candidates should have strong communication skills, experience with protocols like MQTT and Modbus, and familiarity with Agile methodologies. This position offers a dynamic work environment focused on innovative solutions for industrial systems.

Qualifications

• Strong proficiency in C and C++ (Embedded/Linux).
• Hands-on experience with AWS Cloud and AWS IoT Core.
• Deep understanding of MQTT, Modbus, and device communication protocols.
• Knowledge of multi-threading and performance optimization.

Responsibilities

• Design, develop, and maintain C/C++ applications for IoT gateways.
• Implement cloud connectivity using AWS IoT Core.
• Write unit and integration tests using frameworks like Google Test.
• Create and maintain detailed documentation and participate in Agile ceremonies.

Skills

C/C++ expertise

AWS Cloud integration

MQTT and Modbus knowledge

Linux-based systems experience

Unit testing frameworks

Configuration files handling

Verbal and written communication

Tools

Git

JIRA

Confluence

Agile/Scrum methodology

Job description

Overview

We are looking for a Senior Software Engineer with strong expertise in C/C++ for IoT and Cloud-based systems. The candidate will be responsible for designing and developing IoT gateway and device-side applications, integrating with AWS Cloud, and ensuring secure, scalable, and high-performance solutions for industrial systems, particularly in the HVAC domain.

The role demands an engineer who can work independently, contribute to system architecture, and produce high-quality technical documentation including Requirement Specifications and Design Documents.

Key Responsibilities

Software Development

• Design, develop, and maintain C/C++ applications for IoT gateways and edge devices.
• Implement cloud connectivity using AWS IoT Core.
• Develop communication layers using MQTT, Modbus (RTU/TCP), and REST APIs.
• Handle configuration files (JSON/YAML/XML) and enable dynamic data mapping for device parameters.
• Build scalable solutions for real-time data acquisition, processing, and cloud synchronization.
• Experienced in implementing secure development methodologies, ensuring robust protection of sensitive data and systems integrity.

Cloud & IoT

• Integrate devices with AWS services such as:
• AWS IoT Core
• Lambda
• S3
• DynamoDB / RDS
• Implement secure authentication mechanisms (certificates, policies, TLS).
• Support firmware upgrade mechanisms (OTA).

Quality & Security

• Write unit and integration tests using frameworks such as:
• Google Test (GTest)
• CppUTest
• Follow secure coding practices and industry best practices.
• Ensure compliance with cybersecurity standards and data protection requirements.

Documentation & Process

• Create and maintain:
• Detailed Requirement Specifications
• High-Level and Low-Level Design Documents
• API documentation and system diagrams
• Participate actively in Agile ceremonies (Sprint Planning, Reviews, Retrospectives).
• Track work using JIRA and maintain knowledge in Confluence.

Mandatory Skills

Technical

• Strong proficiency in C and C++ (Embedded/Linux).
• Hands-on experience with AWS Cloud and AWS IoT Core.
• Deep understanding of MQTT, Modbus, and device communication protocols.
• Experience with Linux-based systems and networking concepts.
• Expertise in unit testing frameworks and test-driven development.
• Experience in handling configuration files and dynamic device models.
• Knowledge of multi-threading, memory management, and performance optimization.

Tools & Practices

• Git (GitHub / GitLab / Bitbucket)
• CI/CD pipelines
• Agile/Scrum methodology
• JIRA, Confluence

Soft Skills

• Strong verbal and written communication skills.
• Ability to work independently with minimal supervision.
• Capability to interact with clients and stakeholders for requirement discussions.

Good to Have (Preferred)

• Knowledge of GDPR and ISO 27001 compliance.
• Experience in building IoT Gateway Applications for European customers.
• Domain experience in HVAC / Building Management Systems (BMS).
• Experience with:
• OPC-UA
• BACnet
• Digital Twin platforms
• Exposure to DevOps practices and cloud cost optimization.