Description:

The Senior Web Application Developer will be responsible for designing, developing, and maintaining scalable, high-performance web applications, focusing on backend APIs, databases, and real-time communication systems to support IoT applications. The role requires collaboration with frontend, DevOps, and product teams to build secure, reliable, and performant systems.

Key Responsibilities:

• Develop web applications using PHP (CodeIgniter, Laravel) and Node.js.
• Design and optimize relational databases such as 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 scalable data storage.
• Work on data ingestion pipelines and IoT protocols for connected devices.
• Optimize application performance, scalability, and security.
• Write clean, maintainable, and well-documented code.
• Collaborate with frontend developers for full-stack application development.
• Implement automated testing (unit, integration) and deployment pipelines.
• Debug and resolve complex backend and server-side issues.
• Stay current with the latest technologies and security practices.

Key Technical Skills:

PHP (CodeIgniter, Laravel), Node.js, PostgreSQL, MariaDB, MySQL, RESTful APIs, Web Sockets, MQTT, STOMP, AMQP, MongoDB, Redis, Cassandra, DynamoDB, JWT, OAuth, API Keys, Docker, Kubernetes, AWS/Azure/GCP, Linux, Shell Scripting, Server Administration

Requirements:

• Proven experience of 5+ years in developing web applications.
• Strong expertise in PHP frameworks and Node.js asynchronous programming.
• Proficiency in relational and NoSQL databases.
• Experience with real-time communication protocols and IoT data ingestion.
• Knowledge of authentication/authorization protocols.
• Familiarity with containerization, cloud platforms, and Linux environments.
• Strong debugging and problem-solving skills.

Preferred:

• Previous experience with IoT applications, device management, telemetry, and real-time analytics.
• Familiarity with IoT protocols like CoAP, LoRaWAN, Zigbee, WebRTC.
• Experience with messaging brokers (Kafka, RabbitMQ).
• Knowledge of GraphQL API development.
• Experience with CI/CD pipelines and DevOps workflows.