Senior Web Application Developer

4 weeks ago

Kolkata India Black Box Full time

Job Description Role Overview JOB DESCRIPTION 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 Node.js. - 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 Node.js 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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