Asit Kumar

Knowledge Excel Delhi, India

Software Engineer I Sep 2026 – Present

Full-time · Remote

• Build and maintain REST APIs with Python and FastAPI, covering authentication, access control, PostgreSQL data flows, and service integrations.
• Develop agent-based workflows with Google ADK and connect them to backend services and application logic.
• Work on RAG pipelines, from document processing and chunking to embeddings, vector retrieval, and LLM integration.

Software Engineer Trainee Mar 2026 – Sep 2026

Internship · Hybrid

• Built FastAPI endpoints and worked on authentication, token refresh, and session management.
• Worked with PostgreSQL queries and AWS S3 integrations, and contributed to an initial RAG retrieval pipeline.
• Contributed changes through Git, code reviews, and the team’s deployment workflow.

Planetcast Media Services Limited Noida, Uttar Pradesh, India

Software Engineer Intern Oct 2025 – Jan 2026

Internship · On-site

Smart Food Waste Reduction Platform

Backend system for a donation platform connecting food donors with NGOs in real time.

• Designed and built the backend using Node.js, Express.js, and MongoDB, with geospatial indexing to support location-based donor-to-NGO matching.
• Implemented JWT authentication and RBAC for multi-role access: donors, NGOs, and admins.
• Built a matching algorithm combining distance scoring, urgency level, and NGO capacity to rank donation-to-recipient pairings.
• Used Socket.io for real-time donation status updates and Redis caching to reduce repeated database load on high-traffic endpoints.

Tech stack: Node.js, Express.js, MongoDB, Redis, Socket.io, JWT, RBAC, OpenStreetMap API

EchoSphere — Real-Time Chat Application

Backend for a real-time messaging platform with secure authentication.

• Built an event-driven messaging backend using Node.js and Socket.io to handle real-time message delivery.
• Implemented JWT authentication, OAuth 2.0, and bcrypt password hashing for secure user access.
• Designed RESTful APIs with Express.js middleware, including rate limiting to protect against abuse.

Tech stack: Node.js, Express.js, MongoDB, Socket.io, JWT, OAuth 2.0, bcrypt