JusPay: Revolutionizing Online Payments in India

JusPay is a company that builds fundamental products and platforms to make online commerce viable and successful in India. Their systems handle an impressive 100 million transactions.

Key Points:

1. Focus on frictionless and secure payment experiences

2. Major contributor to UPI development and implementation

3. Emphasis on building robust frameworks and platforms

4. Expansion into global markets with open-source solutions

Low-Level Details

Technology Stack and Innovations

1. Presto Framework

   • Cross-platform native UI framework

   • Allows code to be written once and deployed across iOS, Android, and web

   • Powers payment pages for top merchants in India

   • Enables features like automatic OTP reading

2. Programming Paradigms

   • Adoption of functional programming

   • Use of languages like HCLL and Rust

   • Focus on expressiveness and stability in code

3. JusPay Studio

   • Framework for customizing checkout pages

   • Offers 4,000 customization options for merchants

   • Enables tailored experiences while maintaining brand essence

4. SDK Development

   • 1.5 billion+ installs across different apps and platforms

   • Emphasis on being lean and reliable

   • Designed to work seamlessly across diverse merchant apps

5. System Architecture

   • Built to handle scale (100 million transactions daily)

   • Focus on reliability and uptime

   • Inspired by cloud systems like AWS, GCP, and Azure, but tailored for payments

Hyper Switch

• Open-source payment switch for international markets

• Built on open core principles, inspired by Linux

• Developed from scratch using Rust

• Community-driven approach with 9k+ stars on GitHub and 1000+ community members

Future Directions

1. Global Expansion

   • Applying learnings from India to create global payment solutions

   • Focus on B2B payments, Financial One Billing System (FOBS), and credit systems

2. AI Integration

   • Developing AI co-pilots and custom AI software

   • Goal: Augment human capabilities to increase productivity

Summary

JusPay has positioned itself as a key player in India's digital payment ecosystem by developing robust, scalable, and innovative payment solutions. Their approach combines:

1. Building foundational frameworks (Presto, JusPay Studio)

2. Adopting modern programming paradigms (functional programming, Rust)

3. Creating scalable systems (handling 100 million daily transactions)

4. Expanding globally with open-source solutions (Hyper Switch)

5. Focusing on future technologies (AI integration)

The company's success stems from its ability to address critical challenges in the payment industry, such as improving success rates, ensuring security, and providing customizable solutions for merchants. JusPay's vision extends beyond India, with ambitions to create global payment solutions and leverage AI to augment human capabilities in the fintech sector.

For engineers and innovators interested in solving complex problems at scale and working with cutting-edge technologies in the payment industry, JusPay presents itself as an exciting opportunity to make a significant impact on the future of digital transactions.