Rahul Mondal profile photo 1 on Tal

Rahul Mondal

SDE 1 at Ola

Bengaluru

2+ years of work experience

Ola
Jan 20251 yr 8 mosPresent

Building performant and scalable payment systems to deliver reliable, low-latency transaction processing and seamless user experiences at scale. Optimized large-scale accounting and settlement cron jobs using Apache Spark, reducing processing time from hours to minutes through batch data fetching and distributed parallel processing. Developed a real-time Subscription AutoPay platform enabling automatic payment deductions and subscription management for driver partners. Designed and implemented discount and cashback frameworks to support promotional campaigns, improve user engagement, and drive subscription adoption. Contributed to the architecture and enhancement of payment infrastructure with a focus on scalability, performance, and operational efficiency.
Ola
Jun 20247 mosDec 2024

• Built and optimized distributed payment systems using Apache Kafka, Redis, and Apache Spark, reducing data processing and job execution times from hours to minutes through parallel processing and caching strategies. • Developed secure driver subscription purchase flows by integrating Razorpay APIs, implementing UPI mandate based recurring payments, REST APIs, and token-based validation to enable seamless automated transactions. • Implemented fraud detection checks and billing workflows, calculating upfront and final bills with GST, TDS, and other tax components, while introducing subscription add-ons and cohort-based cashback/discount systems to improve conversion rates and platform revenue. • Improved payment system reliability by upgrading Apache Kafka to version 3.7, enabling the deprecation of Apache ZooKeeper, and built a Grafana dashboard to monitor payment success and failure rates across multiple gateways.
EY
Dec 20234 mosMar 2024

Remote

Dec 20234 mosMar 2024

• Strategized enhancements to the platform’s interfaces, pricing updates, and checkout processes to achieve a growth in user engagement. • Implemented newsletter functionality, utilizing Django and PostgreSQL for personalized content delivery and analytics to achieve growth.
THECYBERHOST™
Aug 20232 mosSep 2023

Delhi, India

PHN Technology Pvt Ltd
Apr 20233 mosJun 2023

Maharashtra, India

LeetCode
@rahulmondal779
GitHub
@rahulmondal779

Rahul’s AI Stack

codex
codex
cursor
cursor
github copilot
github copilot
ChatGPT
ChatGPT

Education

APS college of Engineering

Bachelor of Engineering, Computer Engineering

APS college of Engineering

20213 yrs2024

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Rahul Mondal on Tal

Headline

SDE 1 at Ola

About

I'm a passionate Software Engineer currently working at Ola, where I contribute to building and scaling critical payment systems that power millions of transactions. My role involves designing robust backend architectures, implementing secure and efficient payment workflows, and integrating with various services to ensure reliability at scale.

Location

Bengaluru

AI stack

codex

cursor

github copilot

ChatGPT

Work experience

SDE 1 at Ola, Jan 2025 - Present · 1 yr 8 mos, Building performant and scalable payment systems to deliver reliable, low-latency transaction processing and seamless user experiences at scale. Optimized large-scale accounting and settlement cron jobs using Apache Spark, reducing processing time from hours to minutes through batch data fetching and distributed parallel processing. Developed a real-time Subscription AutoPay platform enabling automatic payment deductions and subscription management for driver partners. Designed and implemented discount and cashback frameworks to support promotional campaigns, improve user engagement, and drive subscription adoption. Contributed to the architecture and enhancement of payment infrastructure with a focus on scalability, performance, and operational efficiency.

Software Developer Engineer Intern at Ola, Jun 2024 - Dec 2024 · 7 mos, • Built and optimized distributed payment systems using Apache Kafka, Redis, and Apache Spark, reducing data processing and job execution times from hours to minutes through parallel processing and caching strategies. • Developed secure driver subscription purchase flows by integrating Razorpay APIs, implementing UPI mandate based recurring payments, REST APIs, and token-based validation to enable seamless automated transactions. • Implemented fraud detection checks and billing workflows, calculating upfront and final bills with GST, TDS, and other tax components, while introducing subscription add-ons and cohort-based cashback/discount systems to improve conversion rates and platform revenue. • Improved payment system reliability by upgrading Apache Kafka to version 3.7, enabling the deprecation of Apache ZooKeeper, and built a Grafana dashboard to monitor payment success and failure rates across multiple gateways.

Full Stack Developer Intern at EY, Dec 2023 - Mar 2024 · 4 mos, Remote

Full Stack Engineer at EY GDS - AICTE, Dec 2023 - Mar 2024 · 4 mos, • Strategized enhancements to the platform’s interfaces, pricing updates, and checkout processes to achieve a growth in user engagement. • Implemented newsletter functionality, utilizing Django and PostgreSQL for personalized content delivery and analytics to achieve growth.

Cyber Security Intern at THECYBERHOST™, Aug 2023 - Sep 2023 · 2 mos, Delhi, India

Web Development Intern at PHN Technology Pvt Ltd, Apr 2023 - Jun 2023 · 3 mos, Maharashtra, India

Education

Bachelor of Engineering, Computer Engineering, APS college of Engineering

Public links

leetcode: https://leetcode.com/rahulmondal779

github: https://github.com/rahulmondal779

Rahul Mondal - SDE 1 in Bengaluru | Tal