Senior Web Application Developer

6 days ago

Kolkata, India Black Box Full time

Role Overview:

As a Senior Web Application Developer , you will design, develop, and maintain high-performance web applications. You will work on backend APIs, database design, and real-time communication systems to support IoT-based applications. You will also collaborate with frontend developers, DevOps engineers, and product teams to build scalable, secure, and high-availability applications.

Key Responsibilities:

Develop and maintain web applications using PHP (CodeIgniter, Laravel) and . Design and optimize database schemas using PostgreSQL, MariaDB, or MySQL . Develop and integrate RESTful APIs, WebSockets, and real-time messaging protocols like MQTT, STOMP, and AMQP . Implement NoSQL solutions (MongoDB, Redis, Cassandra, or DynamoDB) for high-performance data storage. Work with IoT protocols and data ingestion pipelines for connected devices. Optimize application performance, scalability, and security. Write clean, maintainable, and well-documented code following best practices. Collaborate with frontend developers to build full-stack applications. Implement unit testing, integration testing, and automated deployment pipelines . Debug and troubleshoot complex application and server-side issues. Stay up-to-date with the latest web development technologies, frameworks, and security practices.

Required Skills & Experience:

5+ years of experience in web application development . Strong expertise in PHP frameworks (CodeIgniter, Laravel) . Hands-on experience with and asynchronous programming . Proficiency in relational databases like PostgreSQL, MariaDB, or MySQL . Experience in real-time data communication using MQTT, STOMP, or WebSockets . Strong understanding of RESTful API development and microservices architecture . Knowledge of NoSQL databases (MongoDB, Redis, or Cassandra) . Familiarity with authentication and authorization protocols (JWT, OAuth, API Keys) . Experience with Docker, Kubernetes, and cloud platforms (AWS, Azure, GCP) is a plus. Understanding of Linux environments, shell scripting, and server administration . Strong problem-solving and debugging skills.

Good to Have:

Previous experience in developing IoT applications involving device management, telemetry, and real-time analytics . Knowledge of IoT protocols such as CoAP, LoRaWAN, Zigbee, or WebRTC . Experience with Apache Kafka, RabbitMQ, or other message brokers . Hands-on experience with GraphQL APIs . Familiarity with CI/CD pipelines, Git workflows, and DevOps best practices .

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