RAHUL KUMAR JAIN
Technical Lead
Bengaluru
Summary
- 7+ years of hands-on experience in backend development with a strong focus on building scalable and distributed systems.
- Designed and developed microservices-based architectures to support high-performance and resilient applications.
- Involved in end-to-end software development lifecycle, including requirement analysis, high-level and low-level design, implementation, and production deployment in close collaboration with technical leads.
- Led the low-level design and execution of multiple projects, ensuring timely and stable production releases.
- Strong proponent of clean code practices and clean architecture principles to maintain code quality and system maintainability.
- Mentored interns and new team members, helping them ramp up quickly and contribute effectively to both technical development and business deliverables.
Overview
7
7
years of professional experience
4
4
years of post-secondary education
Work History
Technical Lead
Paytm
03.2023 - Current
- Designed and developed a microservice to purge transaction metadata 2–3 days post order completion, serving archived data via a real-time data domain system, resulting in monthly cost savings of over $25,000.
- Integrated Virtual Table (VT) in the payment system to enable real-time configuration updates without downtime or redeployment.
- Implemented both database and API circuit breakers to enhance system resilience, enabling faster failure detection and automated recovery.
- Introduced database partitioning and sharding strategies, and shifted refund and forward flow status queries to the real-time data domain, achieving $100,000+ in monthly cost reduction.
- Led the end-to-end delivery of key features within the Payment Gateway domain—such as Hybrid Payments, Store Cash Points, UPI Fee Charging, MCC/DCC Flows, Settlement Async Flow, and Payment Reversal—driving improvements in user acquisition and engagement.
- Executed high-throughput, zero-downtime data migration between infrastructures under strict timelines.
- Mentored junior engineers through system onboarding, design guidance, and regular code and architecture reviews, fostering technical growth and team effectiveness.
Software Engineer II
Paytm
02.2022 - 02.2023
- Migrated key features such as UPI Intent, AddNPay, Auth-Capture, and PCF flow from the legacy system to a microservices-based architecture, enabling better scalability and enhanced user acquisition.
- Developed a non-transactional system within the payments platform to handle post-transaction traffic, improving overall system latency and responsiveness.
- Performed extensive optimizations across multiple workflows to reduce infrastructure cost, improve latency, optimize resource usage, and minimize database footprint.
Software Engineer II
ClearTax
01.2021 - 01.2022
- Built an automated pipeline for CAMS statement ingestion by integrating the Gmail API, enabling seamless extraction and parsing of mutual fund data from user inboxes.
- Redesigned the SIP (Systematic Investment Plan) module to support daily investments, eliminating date restrictions and enhancing user flexibility.
- Implemented key features such as IVR-based OTP delivery, a mutual fund wishlist, and a revamped redemption workflow to improve user experience and system reliability.
- Developed multiple APIs and internal dashboards using Retool to support operations and streamline backend processes.
- Added comprehensive unit tests across microservices to improve code quality, maintainability, and reduce production issues.
- Optimized APIs, background consumers, and data flow logic to reduce latency and operational costs.
Software Development Engineer I
CarWale
06.2018 - 01.2021
- Redesigned and optimized the Price and Offer page using React, improving performance and user experience.
- Enhanced nearby city price retrieval logic to reduce latency and improve data accuracy.
- Developed and maintained web crawlers to automate vehicle price extraction across various sources.
- Utilized the Price microservice to deliver unified pricing data for both cars and bikes, streamlining backend service architecture.
- Introduced and integrated key features such as price widgets, offer sections, and a back-office operations management system to efficiently manage and update pricing and promotional offers.
- Designed and implemented a modular, scalable payment infrastructure for CarWale using Microservices Architecture, ensuring system reliability and supporting future growth.
- Developed CarWale Advantage, a user subscription-based platform, from scratch to deliver exclusive value-added services in collaboration with partner dealers.
- Developed end-to-end subscription workflows including listing, detail and subscription pages with advanced filtering and sorting capabilities.
- Created operations and admin panels to manage subscription plans, pricing, offers and coupons, enabling seamless backend control and flexibility.
- Revamped the editorial detail page and developed listing and landing pages for Hindi news, leading to significant improvements in user experience and engagement.
- Implemented near real-time updates for image and news sitemaps, enhancing search engine crawler efficiency and accelerating indexing speed.
- Integrated AMP and PWA technologies to optimize mobile experience, utilizing React Server-Side Rendering (SSR) to boost SEO and reduce initial load time.
- Enabled real-time content indexing with Elasticsearch, streamlining editorial workflows and improving the performance of content listings.
Education
B.Tech. - Computer Science & Engineering
Maulana Azad National Institute of Technology
01.2014 - 01.2018
Higher Secondary - undefined
Saraswati Higher Secondary School
High School - undefined
Saraswati Higher Secondary School
Skills
Java
C
C
C#
SQL
Reactjs
HTML
CSS
SpringBoot
GRPC
ApacheKafka
REST APIs
Memcache
RabbitMQ
Redux
AWS
Jenkins
SonarQube
Maven
JDBC
Hibernate
MySQL Workbench
Prometheus
Grpahana
Kibana
Git
Docker
Agile methodology
Technical analysis
Project leadership
Accomplishments
- Received multiple RockStar Awards at Paytm in recognition of consistent high performance.
- Nominated for the High Flier Award at CarWale for implementing the Builder Pattern in JavaScript to modularize GTM ad integration across all pages.
- Ranked among the Top 100 students in Madhya Pradesh under the Mission Excellence Program.
- Awarded the MPCST Scholarship for academic excellence in science and technology.
- Qualified for NTSE Round 2, a prestigious national-level scholarship exam.
Timeline
Technical Lead
Paytm
03.2023 - Current
Software Engineer II
Paytm
02.2022 - 02.2023
Software Engineer II
ClearTax
01.2021 - 01.2022
Software Development Engineer I
CarWale
06.2018 - 01.2021
B.Tech. - Computer Science & Engineering
Maulana Azad National Institute of Technology
01.2014 - 01.2018
Higher Secondary - undefined
Saraswati Higher Secondary School
High School - undefined
Saraswati Higher Secondary School