Hello! The site is under construction.

Please get in touch @ harianshtrehan@gmail.com

Experience
April 2021 - Jan 2025
Technical Lead Engineer
Some Highlights
  • Lead a team and built OMS application for payment related order for Airtel Thanks APP and web application.
  • Design and built layer for webhook and callback mechanism in application using Kafka queues.
  • Collaborated with stakeholders to convert business requirements into technical solutions.
  • Collaborated with team to launch new Airtel Thanks App design revamp.
  • Design and programmed integrations with payment gateways like PayU, Razorpay, Juspay.
  • Involved in optimisation of the payment gateway routing algorithm for high success rates and handle 2 million transaction per day.
  • Participated in multiple interview drives to onboard best talent for organisation

Nov 2019 - March 2021
Senior Technical Associate
Some Highlights
  • Collaborated with core team as backend associate to run POC for new tools and technology to provide optimised solutions, that can be consumed by other LOBs in organisation.
  • Involved in database optimisation and performance tuning of the project.
  • Design and developed document module based on CDN implementation using AWS S3.
  • Built continuous integration and deployment pipeline with Jenkins for business-critical fraud evaluation, regression testing and tackle manual deployments.

May 2018 - Oct 2019
Senior Associate Technology
Some Highlights
  • Collaborated on a team as backend consultant to launch web and mobile ordering application for Greenwich and Chowking food e-commerce solutions.
  • Built feature for multi-delivery fail over and last mile delivery functionality to reduce sales drop and increase revenue.
  • Collaborated with team for integration of different types of coupons in application.
  • Documented the technical as well as design approaches.

July 2015 - April 2018
Software Developer
Some Highlights
  • Built CMS application from scratch to provide website creation solution, worked on features covering design and development of business logic, persistence layer, database implementation and debugging production issues.
  • Design and build data driven workflow and modules for CRM application, to increase sales team productivity. Modules worked included Invoice, Payment, Email.
  • Collaborated with team for integration of CRM with Libsys’s e-commerce website and internal search engine.
  • Built Utility for dynamic report generation using Jasper, which reduced huge effort for client specific jasper creation.
  • Built modules like Pricing, Supplier, Stock, User, Warehousing for Libsys’s e-commerce website.
  • Development using RFID’s tags to convert and store information from bibliographic data.

View My Resume
Skills
Languages
  • JAVA
  • C
  • Ruby on Rails
  • JavaScript (ES6)
  • HTML
  • CSS
Frameworks
  • Spring
  • Jekyll
  • Rails
Database
  • Mysql
  • MongoDb
  • MsSql
  • Postgres
  • Redis
  • Aerospike
Queue Technologies
  • Kakfa
  • SQS
Other Technologies
  • AWS
  • Jasper
  • Docker
  • Kibana
  • Grifana
  • InfluxDb
  • XML