Varun Joshi

Project 1- Paytm EMI(BNPL Product):

• Single handedly led the development of Paytm EMI from scratch, a yet to launch product which facilitates monthly installment purchases. Implemented using Java, Scala, Multi Threading, Apache Kafka, Apache Nifi, and MySQL, Cassandra to handle millions of transactions in real-time.
• Designed and implemented a user-friendly journey for onboarding and transactions. Added seven states for enhanced tracking.
• Streamlined interdepartmental coordination. Resolved multiple critical dependencies. Reduced customer complaints and boosted satisfaction.

Project 2- Paytm Personal Loan, Collections, Bank Statement Analysis:

• Developed and took ownership of Paytm’s unsecured loan products focusing on Collection, Account Aggregator, and Bank Statement Analysis (up to 5 Lakhs) using Java, SpringBoot, Cassandra, Multi Threading, and Apache Kafka.
• Collaborated with various lender tech teams resolving multiple issues across stages ensuring smooth integration.
• Integrated Multiple Lender/NBFCs Journeys on Paytm’s Personal Loan Page: ABFL, HERO, CLIX, SSFB, FULLERTON.

Project 3- Customer Data Encryption Service:

• Led and developed a microservice to encrypt customer’s PII data for historic data using Java, SpringBoot, Kafka, Cassandra, Mysql, and Azkaban.
• Encrypted 1 Billion rows of records of Mysql and Cassandra Records under 20 Days.

Project 4- Other Key Tasks:

• Reduced customer support tickets by 50% by fixing recurrent issues with lenders, implementing various Cron Jobs, and re-trial mechanisms. Alongside documented a SOP for error resolution for TechOps team.
• Led development and Setup of Kogito Runner and helped in induction of BPMN, DMN Modelling in Team.
• Onboarded Credit Cards products of HDFC and Kotak Mahindra Bank on the Paytm App.
• Provided guidance and mentorship to new team members.

Project 1- Tech Stack Migration:

• Helped in migration of older products from old to new tech stack, which is more scalable and 40% faster than previous stack.
• Developed and maintained RESTful APIs using Spring Boot and Java which are used by more than 2 Million users per day.
• Safeguarded backward compatibility during integration ensuring a seamless transition of existing products to the new stack.
• Managed migration of 100+ customer Risk Underwriting Policies from Java to Scala scripts, enhancing scalability and agility.
• Developed real time offer generation functionality for business/growth team using Spring Apache Nifi which can consume 4-5 crores of records daily.

Project 2- Setting Up Alerting and Dashboards:

• Built intuitive Dashboards in Redash for Business and Products teams to monitor funnel.
• Created Redash Alerts and Grafana Dashboards for increased monitoring and alerting of critical services.

Project 3- Merchant Loans (MCA Loans):

• Led development of Paytm's Merchant Loan product, focusing on High-Ticket loans (upto 8 Lakhs), using SpringBoot, ElasticSearch, Mysql, and Cassandra.
• Collaborated with the Lender tech team resolving critical dependencies and ensuring smooth system integration.