SDE - UI Frameworks
Building FRP Frameworks @Juspay
JUSPAY is a Payments Exchange connecting merchants, payment providers and banks.
With a deep focus on delivering seamless payments UX at scale, we are trusted partners for all major internet companies in India. After surpassing 200M SDK installs and building systems handling the highest payments traffic in India of 2000 TPS, we are now making the next stride to power end-to-end payments for India.

99.999% Availability | 50M Txns/day | 1-Click Experience
What will you be doing?

JUSPAY builds its own UI frameworks with its deep investment in functional programming techniques and its unique needs to be a payments mico-app platform inside other apps (200M SDK installs in India).

It also builds highly reactive and real-time tools to help banks and payments networks manage payments and credit operations. We are looking for UI engineers who are also systems/framework builders.


1. Building advanced UI Frameworks to be the best payments SDK in the world

Juspay’s ‘Hyper SDK’, a micro app platform enables native app experiences using JavasScript/PureScript. It is a well architectured system that enables isolated and parallel deployment of UI features rapidly; using dynamic over-the-air updates.

Though it is similar to React Native, the quality and stability requirements of Hyper SDK should surpass typical open source projects. And it should have features that our multi billion$$ customers value as advanced tech.

2. FRP Frameworks to build Immersive UI for Creation/Operations

To ensure seamless customer experience specialists require a relentless focus on right information and actions. Complex dashboards and tools provide effective orchestration, enabling creators and optimizers to build and operate large scale financial products/systems. Can such highly critical operations be made immersive and delightful?

With a wide range of complex business use cases, an array of visual ranges from a smartphone to LED walls and inspiration from fundamental technologies, we are looking at a plethora of aesthetic possibilities!

With our growing scale and diverse use cases, we are looking for first-principle thinkers and problem solvers who can architect experiences!

Apply if you are:
  • Interested in architecting large scale frontend projects and frameworks using deep technologies like Functional Programming, FRP, Flux architecture etc.
  • Interested in understanding the systems internals of rendering, GPU, View compositing etc. to create stable and fast UI frameworks (Android, iOS and Web)
  • Passionate about unifying and developing reusable components/libraries using FP primitives
  • Obsessed about creating pixel perfect UI and crafting delightful experiences. (Why not a framework developer can also develop an aesthetic eye for visual structure and movement - animations!!)
  • Excited about building immersive experiences. Think Beyond 2D screens? ;)
  • Willing to be the part of the team that is building the payments backbone in India targeting 50M txns/day with 99.9999% availability
What do you get?
  • It is your Day 0! And you will be working on production critical projects and developing next gen frameworks
  • HARDDD Problems that push you to the edge of solutioning
  • You’ll unleash your 10x potential in Juspay FP ecosystem

Not believable yet? Let us share few real success stories at Juspay

  • Our DUI/HyperSDK Framework was in fact developed by freshers and interns guided by first principles thinking; They are now growing to be deep system architects
  • BHIM, the UPI payment app with ~50M installs was built in 3 weeks with a team with average experience of 6 months.
Why work for us?
Payments.. big deal?
Yes, it is a big deal. The wind is strongly blowing in favor of electronic payments - India wants to buy/order everything online, go cashless (regulation) and can’t have enough of using smartphones! Startups and internet businesses currently see a payment’ success rate of 60% ( 40 out of 100 people fail during the payments process!). These businesses that will define our future are absolutely dependent on solving digital payments. Big industry with bigger problems to solve!
How can Engineering solve this?
Payments is a complex ecosystem involving banks, RBI regulations, payment networks, telecom infrastructure, online and offline merchants. There is no way to align all these stars without radical engineering innovation. Talk to us about it.
What does Juspay offer?
You get the opportunity to work in a free liberal environment with some of the best engineers and entrepreneurs. We live & breathe the art of building amazing products with impeccable engineering. We have heavily invested on new methods of engineering using Functional Programming/FRP, Haskell/Purescript and Scalable Data Systems. We want more innovators and a little bit of madness to take it further. For us office is like home with everything needed to make us comfortably code all day and chill out too. We have a full size piano, drums and a Shruti box if you are into music :) Lots of books, pictionary and interesting people to talk to about varied subjects - art, philosophy and of course about how to do the highest feats of engineering/design. We take an active interest in helping people reach their highest potential.
Apply