Aakar Jindal

Software Engineer

Noida, Uttar Pradesh, India9 yrs 9 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • Led critical payment gateway initiatives at Paytm.
  • Expert in payment security and transaction optimization.
  • Strong background in scalable microservices architecture.
Stackforce AI infers this person is a Fintech professional with expertise in payment gateway solutions and microservices architecture.

Contact

LinkedIn

Skills

Core Skills

JavaMicroservicesPayment SecurityPayment GatewayData Integration

Other Skills

3DS23rd Party IntegrationsAPI IntegrationsAlgorithm DesignAndroidAndroid DevelopmentApache CamelApache KafkaBoomiCC++COFTCassandraDatabase Management System (DBMS)GDPR

About

I am a Software Engineer with 8+ years of experience in digital payments and fintech, specializing in payment gateway integrations, card & UPI flows, and transaction optimization. At Paytm, I have led critical initiatives such as 3DS2 migration, COFT implementation, wrapper-based direct flows (improving SR by 2%), UPI switch migration during RBI restrictions, and SuperRouter (AOA) for intelligent transaction routing. My expertise spans cards, UPI, and net banking integrations, along with pre-auth & capture flows, guest checkout enablement, and secure authentication mechanisms. I bring strong skills in Java, microservices, API integrations, and distributed systems, with a focus on scalability, compliance, and customer experience. I am passionate about building high-availability, regulatory-compliant, and cost-optimized payment solutions that deliver measurable business impact.

Experience

Paytm

3 roles

Senior Technical Lead

Promoted

Apr 2024 – Present · 1 yr 11 mos · Remote

  • Designed and implemented wrapper-based ACS redirect flows, improving OTP success rate by 2–3% and reducing MDR costs.
  • Delivered UPI migration from PPBL to alternate switches during RBI restrictions with zero downtime.
  • Built currency conversion microservice allowing native-currency transactions and improving international success rates.
  • Implemented authentication and authorization retry mechanisms, enhancing card transaction success rates and system resilience.
  • Mentored engineers on Spring Boot microservices, Kafka event streaming, and scalable system design best practices.
JavaSpring BootMicroservicesKafkaAPI Integrations

Technical Lead

Apr 2022 – Mar 2024 · 1 yr 11 mos · Remote

  • Led migration from 3DS1 → 3DS2 ensuring full RBI compliance and enhanced transaction security.
  • Directed COFT (Card on File Tokenization) migration for all saved card traffic, improving customer trust and data security.
  • Developed Aggregator of Aggregators (AOA) solution integrating multiple payment partners with load balancing and cost optimization.
  • Implemented pre-authorization and capture flows to enhance merchant flexibility and reduce payment failures.
  • Collaborated with compliance and acquirer teams to ensure uninterrupted operations during regulatory transitions.
Java3DS2COFTPayment SecuritySpring Boot

Senior Software Engineer

Jan 2020 – Mar 2022 · 2 yrs 2 mos · Remote

  • Developed and enhanced core payment gateway services handling millions of daily transactions with high availability.
  • Optimized routing, retries, and load distribution across card, UPI, and wallet flows, improving transaction success rate.
  • Refactored monolithic services into scalable Spring Boot microservices, improving maintainability and performance.
  • Contributed to monitoring, alerting, and latency reduction initiatives within payment processing pipelines.
JavaSpring BootPayment GatewayAPI Integrations

Sap

Software Developer

Aug 2017 – Jan 2020 · 2 yrs 5 mos · Bengaluru Area, India

  • Developed GDPR compliance tools within SAP SuccessFactors, enabling users to view and manage personal data as per EU privacy laws.
  • Built and supported point-to-point data integrations across HRM systems, improving data consistency and reducing manual HR operations.
  • Automated data migration pipelines ensuring reliable and accurate HR data transfer and reporting.
  • Collaborated with cross-functional teams to deliver scalable SaaS modules supporting millions of active users globally.
GDPRData IntegrationSaaS

Sap successfactors

Intern

Feb 2017 – Jul 2017 · 5 mos · Bengaluru, Karnataka, India

Owasp

Vice Convener

Jan 2016 – Dec 2016 · 11 mos · Patiala Area, India

Education

Thapar Institute of Engineering & Technology

Bachelor of Engineering - BE — Computer Science

Jan 2013 – Jan 2017

Jankidas Kapur Public School

Jan 1998 – Jan 2013

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