Kiran Kumar

Leading an engineering team building crossborder banking, crypto-fiat payment acceptance,
and OTC trading solutions.

Multi-Currency Banking & FX Infrastructure:
Architected international banking pipelines
supporting EUR, GBP, USD, and AED transfers
by integrating third-party banking and
payment rails (Fuse, Zand, Due). Built internal
foreign exchange (FX) engines for seamless
crypto-to-crypto conversions.
•
Crypto-to-Fiat Payment Acceptance Engine:
Built a merchant payment solution enabling
users to pay in cryptocurrency via web
checkout pages or POS payment devices,
automatically settling transactions in local fiat
currency through third-party conversion
partners. Integrated WalletConnect to connect
user wallets and enforce address whitelisting
for compliance and secure source verification.
•
Over-The-Counter (OTC) Desk: Developed an
OTC platform allowing institutional and retail
users to seamlessly execute large-scale fiat-tocrypto and crypto-to-fiat buy/sell orders.

Work on building microservice in Go from scratch
and scale them.
Mainly building communication and social
interface and payment systems. Building a chat
application for social media application.

Work on setting up kong API gateway, write
custom kong go plugins for our use cases for
ex: authentication
•
Develop and maintain Matching engine which
is build in golang, which matches the incoming
new order with the order in order book.
•
Write few microservices from scratch like
authentication service, users service etc. in
nodejs
•
Work on Design and implementation of
Derivatives product.
•
Work on the order management system. Spot
APIs to accept crypto exchange orders in
nodejs
•
Work on the user wallet service
implementation using postgres and faktories
(nodejs) and Kafka
•
Design and develop new order management
service in nodejs from scratch with 100% test
coverage that uses postgres for data modelling
and integrates with Third party for crypto order
placement
•
Develop deposits and withdrawal service in
nodejs from scratch that integrates with wallet
service and third party OPENPAYD
•
Built backend for OTC trading and Admin
dashboard to manage the OTC orders as POC
•
Work on Matching engine and Liquidation
engine in new C++ Project. Built new features
and improved code and added higher coverage.
•
Built a telegram bot as POC for performing
quick balance checks and swap/buy assets
•
Have full ownership of entire backend and all
the micro services. Was responsible in
designing, building, deploying, maintaining
and scaling the applications.
•
Implement deposit and withdrawals of foreign
currencies with integration with Openpayd
•
Integrate with Nium and Currency Cloud for
foreign exchange in Golang.

Integration with Onfido/Hyperverge for KYC
checks

• Work with payments domain of Rapido and UI dev on dashboards built for support
• Technology/Software: Nodejs, Express JS, Mongoose, Mongodb, Angular, Jasmine, Jest, docker, kubernetes, golang

Features Delivered:

• Cashless: Implement a solution which enables the users of Rapido to pay via QR code
• Involves an asynchronous integration with Razorpay to build the solution
• Razorpay calls back on successful transaction if no callback then system scheduler calls back to manage the next steps
• Gpay integration: Integrate an asynchronous solution with JusPay to enable users to pay via Gpay
• Buddy Recharge: Generate payment links for riders to recharge with the help of someone else
• Beneficiary bank downtime: Integrate with razor pay to block riders from redeeming amount when the bank is down
• Smart Pay: Manage payment via razor pay callback by generation on virtual accounts
• Paytm API integrations: Link the customers paytm wallet to mobile app and then use this to make payment via paytm
• Promethues metrics solution: Build a solution to send metrics to prometheus in text format using prom client library and write prometheus queries to alert on slack in case of issues
• Chatbot: Automate the process for tech support and customer care to resolve user issues by chatbot by designing APIs, design the entire solution
• Golang-postgres setup: perform initial setup with golang and progress db for a new project
• NgComponents library: use angular library to build reusable that can be downloaded from verdaccio
• This is to be used across the rapido dashboards
• Migrate old data to data team using kafka
• Work on UI tasks of internal dashboards
• Implement graceful shutdown in application for supporting preemptive nodes

• A web application for customers to manage their cloud activities like creating servers, manage volumes, store images, setup infrastructure etc
• Basically it is a cloud control panel
• Technology/Software: Nodejs, Express JS, Mongoose, React, Svelte, Google closures, Jasmine, cypress, Ansible, docker
• Tools – MongoDb, Cassandra, visual studio code

Responsibilities:

• Implement new features on the cloud web UI
• Introduce business logic changes in backend(Express JS) and frontend
• Writing rest APIs in Express JS to manage and store user preferences, time zone, user default configuration, active region, default templates etc
• Authentication, authorization and Session management via Express JS backend
• Usage of socket io to update UI across various devices and logged in pages
• Connecting and management of MongoDB CRUB operations via Mongoose
• Writing APIs to manage the backend APIs, ex: creation of server by Debian APIs
• End-to-End test cases, Jasmine to write functional testing and cypress for integration/ acceptance testing
• Bug Fixes
• Building new UI components using React and svelte
• Migrate UI from google closure to svelte
• Configure docker setup for local and production deployment
• Write some Ansible scripts to manage SSL configuration across Staging, pre-prod and prod environments
• Writing test cases in Jasmine and Jest
• Writing acceptance test cases using Cypress 3: Amadeus

• Own few tools and perform development, maintenance and support of the same

Tools include :

• Support Portal: A tool build in java where users could create issues cross teams
• Piwik: Piwik is an open source web analytics tool written in PHP
• Owl: In house tool to store numeric time-series data and render graphs of this data on demand. It’s a combination of open source tools like Statsd, Graphite and Grafana
• Technology/Software: Core JAVA , Advanced JAVA, JSP, HTML, CSS , Javascript , Maven, MySql

Responsibilities:

• Evolution and support of this tools
• Develop rest API to create ticket which aids integration with other tools
• Bug Fixes
• Write shell script to extract war from Artifactory and deploy it on PaaS solution
• Migrate UI from Aria templates to Angular Js 1.x.