SDE intern

Title: Software Development Engineer (SDE) / Founding Engineer

Location: Gurgaon (In-office)

Duration: Full-time

About Us

1Fi is a next-generation affordability platform that enables brands to offer the longest and most affordable no-cost EMIs at the point of sale, backed by customers’ mutual fund holdings as collateral.

We are building a new category by combining the robustness of Loan Against Securities with the simplicity of modern checkout financing. Our platform sits at the intersection of fintech, lending, capital markets, and commerce.

Role Overview

We are building our core tech team from scratch and are looking for high-energy SDEs / Founding Engineers who want to build products from 0 → 1 and then scale. You will work directly with the

CTO and founding team to build the core systems powering our lending and checkout infrastructure.

Key Responsibilities

· Build responsive web interfaces using React / Next.js

· Develop scalable backend APIs using Node.js / Express.js

· Connect frontend, backend, and databases for seamless product flows

· Write clean, maintainable, and production-ready code

· Debug, optimize, and improve performance across the stack

Requirements

· Strong fundamentals in JavaScript and full-stack development

· Experience with Next.js, React.js, Node.js, Express.js, and REST APIs

· Familiarity with SQL / NoSQL databases

· Comfortable with DevOps tools and workflows such as Docker, Git/GitHub, and Kubernetes

· Builder mindset with experience in side projects, hackathons, or shipping products

· Comfortable working in a fast-paced startup environment

Why Us

· Build real fintech infrastructure from scratch and learn how financial products work end-to-end

· Work directly with an experienced CTO and get hands-on exposure to system architecture and product decisions

· Accelerated learning curve in a high-ownership environment designed to make you a CTO-level technologist in the next few years