Raja Chakraborty

I take products from rough requirements to verified releases, connecting interfaces, mobile applications, APIs, data, integrations, release quality, and production operations.

At Ancile Technologies, I've built and maintained mobile apps, responsive web apps, backend services, data models, integrations, and production workflows. I've delivered real-time messaging, payments, and location-service workflows using REST APIs, SDKs, Firebase, Maps, and payment integrations.

Previously at Guni, I built SMB engagement and growth mobile products across native and cross-platform delivery, integrating Firebase, Google Maps, push notifications, payment gateways, and real-time messaging. At RJS Tech Solution, I developed native Android applications in Java and Kotlin with Retrofit and JSON-based API integrations.

I work across React, Next.js, Node.js, Python, Flutter, Android, PostgreSQL, MongoDB, Redis, Kafka, and applied AI workflows including LLM/RAG, OCR, MLX, and ONNX Runtime. I also build native macOS work with SwiftUI and PDFKit.