Java Developer (WhatsApp & RCS)

You will build and optimize messaging solutions centered around WhatsApp Business API and RCS.

Responsibilities

• Develop and maintain Java-based applications for WhatsApp Business API and RCS messaging.
• Integrate WhatsApp Cloud API and RCS platforms using RESTful APIs, Webhooks, and WebSocket protocols.
• Implement secure, scalable backend solutions to handle high-volume messaging transactions.
• Optimize system performance using multithreading, caching, and database indexing.
• Troubleshoot technical issues involving messaging services and third-party integrations.

Required Skills

• 3-7 years of experience in Java development with expertise in Spring Boot, Hibernate, and Microservices.
• Hands-on experience with WhatsApp Business API and RCS messaging.
• Proficiency with RESTful APIs, JSON, and Webhooks.
• Experience with MySQL, PostgreSQL, MongoDB, or Redis.
• Exposure to cloud platforms including AWS, GCP, or Azure.
• Familiarity with RabbitMQ, Kafka, or similar message queuing systems.
• Understanding of OAuth, JWT, and security best practices.
• Any Graduate degree.

Preferred Skills

• Experience in the CPaaS (Communication Platform as a Service) domain.
• Knowledge of chatbots, AI-based messaging, and NLP integration.
• Experience with Docker, Kubernetes, and CI/CD pipelines.