Axis Bank third party processor

Problem statement:

1. Too many 3rd party calls in parallel and in sequence.
2. Heigh concurrent request on the service
3. Large payload transformation based on third party responses delays

Capacity estimates:

Build integration service in reactive programming using java reactive programming along with Apache airflow for managing workflows..

Reactive programming

Kotlin vrs JAVA

Eliminates boilerplate (constructors, getters, setters). Kotlin has built-in null safety, preventing many runtime crashes due to NullPointerException. Coroutines for Asynchronous Programming (Better than Java’s Threads)** Java uses Threads or CompletableFutures for concurrency, which can be complex. Kotlin’s Coroutines provide an easier, lightweight, and non-blocking way to handle async tasks. Improves code readability and maintainability. Kotlin automatically detects types, reducing redundant code. Kotlin supports higher-order functions, lambdas, and collection operators natively, making functional programming easier than in Java. Spring Boot supports Kotlin natively, leading to faster development and concise APIs in backend systems. Interoperability with Java (100% Compatible) You can mix Kotlin and Java code in the same project.

When is Java Still Better?

✔ Larger Ecosystem & Legacy Code: Java has been around since 1995, meaning more libraries, frameworks, and legacy systems are built in Java.
✔ Performance for Large Enterprise Systems: Java can be slightly faster for certain high-performance applications due to mature JIT optimizations.
✔ Team Experience: If your team is deeply experienced in Java and there’s no need for Kotlin’s advantages, sticking to Java may be more practical.

Project: Axis Bank Module: VIKI

• Worked on redesign of the existing monolithic PHP web application to an microservice architecture.
• Design and developed gateway to connect Axis internal module with External Bureaus.
• Integrated with bureaus for fetching User Score details from Cibil and caching it for further use cases.
• Integrated with several other internal and external API to serve different purpose.
• Worked on performance evaluation and improvement as external bureaus API response average time was 35 Sec

Project: Titan Leader board

• Designed and developed Leader board for sports and events scheduled for a group.

• Worked on event scheduling, result evaluation, event notification, real time evaluation of user performance etc.

• Implemented notification system for sending notification to for sport events and achievements.

  Project: Manipal
  Module: Manipal Microsoft assessment server:

• This was a web-based exam portal built using Django and python to conduct Microsoft assessments.

• Worked end to end backend implementation.

• Implemented integration with AWS service S3 to store exam events log and candidate results.

• Implemented Lamda function to parse proctor and candidates’ logs uploaded in S3 to generate real time exam status dashboard.

Paytm, Noida [ SEPT 2016 – JUNE 2019 ] Software Engineer

1. Payment-Gateway Automation & automatic build deployment:
   • Developed Automation suite for UI testing of all Payment Gateway flows.
   • Automated all payment flows (Wallet, Auth, PG) and Admin panel APIs
   • Worked on setting and executing a suite on selenium Grid.
   • Coordination with a Functional testing team for new features and functionalities.
   • Mentoring and training new team members.
   • Automation build a deployment process for all QA environment using Jenkins, Shell script and Java.
   • Worked on setting up docker for build deployment on QA environment.
2. Mock service:

• This is REST API service using a Spring boot framework to mock response from external modules such as external Banks (HDFC, ICICI), Paytm bank, Paytm postpaid, Merchant 3. Server and Environment setup.

• Setup and managed HA-Proxy services for load balance
• Setup and monitored Zabbix for QA environment.
• Setup Kibana for easy logging on Automation Environment.
• Creating and Maintaining a developer and QA infrastructure which is hosted on Open

stack platform.

Module: Manipal Proctor Portal

• Implemented one to one and one to many real time communications between proctor and candidates to conduct an online tutorial using WebRTC and Kurento Media Server in JAVA.