Integration Engineer

Role Overview: You will be responsible for designing and maintaining middleware services to facilitate data exchange between internal and external systems within a leading BFSI company. This hands-on development role will require your expertise in API and middleware technologies to ensure reliable, secure, and scalable system-to-system communication. You will primarily work with Node.js, Kong API Gateway, and Kafka/RabbitMQ. Key Responsibilities: - Design, build, and maintain middleware services for managing data exchange between internal and external systems. - Develop REST APIs and asynchronous processing flows using Node.js. - Implement and configure Kong API Gateway for routing, authentication, and throttling. - Handle data transformation, mapping, validation, and orchestration. - Apply middleware-focused design patterns such as facade, adapter, and event-driven messaging. - Work with queues (Kafka/RabbitMQ) and file-based inputs (SFTP) for asynchronous integrations. - Secure endpoints using OAuth2, JWT, API keys, and rate limiting. - Write testable, maintainable code with robust logging and monitoring. Qualifications Required: - 6-8 years of backend or integration development experience, preferably in fintech, SaaS, or wealthtech. - Strong hands-on experience with Node.js for REST API and middleware development. - Solid knowledge of Kong API Gateway or similar technologies. - Familiarity with integration methods including REST/SOAP APIs, webhooks, message queues, and SFTP. - Experience with financial data formats like FIX, OFX, JSON, and XML. - Comfort working with asynchronous tools such as Kafka, RabbitMQ, and SQS. - Deep understanding of API and middleware security best practices.,