API Development Intern at Karbon Card

About this internship

Skills you'll use

What you'll do

• Design and implement REST endpoints with clear contracts.
• Write API documentation and example requests.
• Add authentication, rate limiting and input validation.
• Build automated tests for API behaviour.
• Document your work so the next person can pick it up

Who can apply

• Education: pursuing or completed B.E./B.Tech/BCA/MCA/B.Sc in CS, IT or a related discipline
• Graduation year: 2025, 2026 or 2027 batch
• Minimum 60% / 6.0 CGPA (relaxable for candidates with strong practical projects)
• Technical skills: working knowledge of REST APIs, JSON, Node.js, Postman
• Soft skills: clear written communication, ownership, willingness to document work
• Experience: none required — freshers welcome; prior projects or certifications are a plus

Perks & benefits

Interview & selection process

1. 1The selection process for the API Development Intern role at Karbon Card is merit-based and typically runs over 4 stages: Round 1: Application & Resume Screening — apply through this page; profiles are shortlisted on fundamentals, projects and role fit. Round 2: Online Assessment — aptitude plus role-specific questions covering REST APIs, JSON, Node.js. Round 3: Technical / Functional Interview — a discussion of your projects and practical scenarios covering REST APIs, JSON, Node.js, Postman, API Design. Expect "how would you approach this?" rather than definitions. Round 4: HR Discussion — role expectations, stipend, start date, location and offer. Shortlisted candidates are contacted after applying. There are no charges at any stage of the process — Karbon Card never asks candidates for money.

About Karbon Card

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