Mar 2022 – Jun 2025 · 3 yrs 3 mos · Gurugram, Haryana, India

• Leading overall tech for order management system (OMS) consisting of 25+ microservices, helping cross-functional teams in decision making and unblocking them. Lead tech culture and mentored 10+ team members.
• In addition, I played an important role in following key initiatives,
• 1. Developed in-house common performance testing solution (Jmeter and Gatling) for OMS, on-boarded to Backstage (open platform for building developer portals) for every org within EG for its consumption.
• 2. Developed REST and GRPC based mock services, on-boarded to Backstage for everyone's consumption.
• 3. Developed EG wide API1 Linter for both Protos and REST API definitions. Presented in the EG wide forum and received lot of appreciations.
• 4. Domain event standardization as per EG guidelines. Presented on event schema evolution with backward and forward compatibility support.
• 5. Proposed highly scalable, extensible generic reconciliation system design, which is tenant agnostic, decoupled and can be used as plug and play.
• Tech Stack (AWS): Java, Spring, ECS, Lambda, Kinesis, S3, API Gateway, DynamoDB, Docker, Jmeter, Gatling, etc.

Sep 2019 – Feb 2022 · 2 yrs 5 mos · Gurugram, Haryana, India

• Lead and architected TxBridge V2 (Event Processing as a service), the enterprise messaging platform, to support complex business and financial event processing pipelines.
• 1. This is built using AWS serverless architecture. It is elastically scalable and reliable platform, served peak ingestion traffic of ~1000 TPS, and has been perf tested for very high TPS.
• 2. TxB supports various capabilities like event filtering, transformation, batching, delivery, and design is extensible to support custom compute steps.
• 3. Implemented infra, operational and subscriber alerting, with monitoring dashboards.
• 4. Implemented automation tools to migrate hundreds of event pipelines from V1 to V2.
• 5. Operations support reduced by 75%, infra cost by 90% and scaled up by 20x from TxB V1 to V2.
• 6. Performed multiple cost optimization in TxB V2 to save 20% cost (~$5K/month) on PROD.
• 7. Collaborated with multiple orgs within EG.
• Tech Stack (AWS): Java, Spring, ECS, Lambda, Kinesis/Firehose, S3, SNS/SQS, Glue/Athena, API Gateway, DynamoDB.

Apr 2018 – Sep 2019 · 1 yr 5 mos · Gurgaon, India

• In last 1 year span, delivered 5 most critical things for Wallet,
• 1. Implemented RBI's new PPI guidelines like KYC features, users' limits, txn capping, etc. Designed Wallet as single point of control for PPI release. Timely executed with limited bandwidth and time.
• 2. Gave smart approach to do escrow migration after Axis Bank's acquistion and performed lot of improvisations. Timely executed. Took 30 minutes to smoothly transition to new license. Well thought off exercise was done with exact steps prepared.
• 3. Single Nodal Settlement to give best experience when doing settlements to merchant and its related reports.
• 4. DR (Disaster Recovery) activity performed with zero bugs in production. Detailed and exact steps prepared considering risks involved at multiple places.
• 5. Wallet inactive activity done for 65+ million users
• Along with wallet system, I am leading entire campaign system to increase user engagement. Implemented Activation Campaign feature from scratch where user can get the cashbacks after performing some n number of txns. In last 5 months ~1.5L unique activations done by the user. Also, did lot of architectural changes in campaign by introducing retries, exceptions handling, which eventually helped in very reduced CPS.
• Ensured 99.95% uptime of Wallet, P2P, Campaign and Reporting systems. Received accolades for same from CTO and other key stake holders.

Jan 2016 – Mar 2018 · 2 yrs 2 mos · Gurgaon, India

• Making contributions to next generation digital wallet i.e. Snapdeal's payments business aka FreeCharge.
• Environment: Apache Tomcat, Java, Spring, MySQL, Linux, Maven, Git
• Responsibilities:
• Lead highly scalable, available, distributed system built on microservices architecture using Java/J2EE stack, Spring, iBatis, Rest Web Services, Sharded MySQL, Aerospike (NoSQL), Quartz.
• Optimized get account balance details apis with 5x improvement in response time, # of db and aerospike calls. Currently, balance is being server under 30ms with 300 tps, and capability to scale to 3x.
• Designed and implemented “Colours of money” concept to issue merchant specific vouchers.
• Contributed in hardware cost reduction activity and saved ⅔ of the cost.
• Sole contributor of sending wallet monthly statements to ~6 million users in 12 hrs span.
• Implemented FC license migrated users report with their all types of balances for ~50 million users.
• Optimized SQL queries, awk scripts, in-memory processing for RBI, KYC, user balance, merchant settlement and various reports. Saved 70% of reports’ execution time. Currently, system is generating 2K+ reports.
• Ensured end-to-end AWS migration of Wallet system with SRE team.
• Helped team in design discussion of lien project Uber integration.
• Lot of refactorings done like thread safety, catch exceptions, modular code, remove duplicated code, other optimizations in existing code and properties file to make the code more robust.
• Mentored 6 team members and helped them in their technical curve and processes.
• T3 Recognition:
• Recognized with an award of Rs. 5000 for the year ending trimester at FreeCharge for contributing at scale.

Aug 2015 – Dec 2015 · 4 mos · Gurgaon, India

• Worked on multiple initiatives to improve customer experience,
• 1. Snapdeal Maximus – New product targeting a USD 300 billion B2B E-commerce market. Designed and developed the product from scratch with 8 core team members and launched the pilot project in less than a month.
• 2. Microsoft for Business – Product featuring Microsoft goods on a parallel B2C platform for corporate users. Designed and implemented product listing and pricing for corporate categories.

Oct 2014 – Aug 2015 · 10 mos · Gurgaon, India

• Project: Video Advertising Planning and Reporting Tool
• Environment: Apache Tomcat, Java, Spring, Python, Django, MySQL, HTML, CSS, JavaScript, Amazon Cloud Services, Shell/Perl Script, Nginx, Linux, Maven, SVN, Jenkins
• Responsibilities:
• Managing 30+ codebases out of which 10+ are active.
• Managing a team of 6 people and have mentored 8 persons during their Java and Django rampups.
• Established the process of attending the triage, requirements clarification, issues updates, code reviews and timely deliveries.
• Very active in replying to alert emails and fixing them. Ensured that everyone follow the same practice.
• Setup chef from scratch to automate building of EC2 instance and complete setup.
• Implemented the web-based application following the MVC architecture using Spring Framework.
• Designed centralized authentication system with DB schema.
• Implemented authentication system in django, to be used as security module in all django projects. Created auth (remember me), cookie based, REST API header (stateless) based authentication middlewares.
• Added pep8, pylint django packages to ensure static code analysis.
• Created command line tools to automate the audience verification process i.e. s3 → redshift dataware house → AWS/RDS
• Setup SQL formatting standards and created wiki to capture them.
• Setup private python repo to manage internal python packages.
• Configure sendmail MTA with Amazon SES to send alert emails on cronjob failure.
• Setup RAID0 array to increase read and write speeds.
• Knowledge sharing of heartbleed bug, bash - cgi scripts, AWS-ELB SSL certificate issue and wget vulnerabilities.
• Created Google Apps Script to copy drive from older to newer Gmail account. Also, added email support with log file as attachment. This saved lot of time of individuals when doing the migration part.
• Performed organizational level goals like recruitment drive, FGM for cumulative growth.

May 2012 – Sep 2014 · 2 yrs 4 mos · Gurgaon, India

• Project: High Performance Ad Server for Mobile Platform
• Environment: Apache Tomcat, Java, Spring, Python, Django, MySQL, MongoDB HTML, CSS, JavaScript, Amazon Cloud Services, Shell/Perl Script, Nginx, Linux, Maven, SVN, Jenkins
• Responsibilities:
• Developed algorithms that efficiently help in targeting audiences to serve both banner and video ads on mobile.
• Served ~30 million impressions per day i.e. close to 350 tps.
• Demonstrated excellence in horizontal scaling of server to distribute heavy traffic.
• Designed and automated critical tasks that impact sync/async process during ad suggest.
• Automated API/rails deployment using release plugin, capistrano and jenkins.
• Migration of EC2 servers to new architecture.
• Gave MongoDB presentation and reviewed assignments.
• Really enjoyed in some of the exemplary issues like deployment automation, generic vast handler, datatables sorting/scrolling/expand-collapse row, AWS tweaks, and many more.
• Proposed some business requirements during the triage.
• Quality code reviews done for the folks and guided them to automate their daily tasks.

May 2011 – Apr 2012 · 11 mos · Gurgaon, India

• Developed algorithms that efficiently help in targeting audiences to serve both banner and video ads on mobile.
• Technologies used: Mule ESB, Java, Postgres, MongoDB, Amazon Cloud Services, Nginx

Aug 2010 – May 2011 · 9 mos · Noida Area, India

• Responsible for integration & validation for the Mont Blanc for Shared services and ensure high quality & well tested software delivery, within the integrated environment of NCP to meet customer expectations.
• Ensured execution of 100% E32/F32test cases on NCP environment and debugged failed test cases to propose solutions to them. Created Perl script to automate the report generation of E32/F32 test results from log files.

Dec 2009 – Feb 2010 · 2 mos

• Alchemist is a professional coaching MBA institute. This company specialize in providing structurally designed and technology driven learning for CAT. It has excellence in BBA, Law, Hotel Management.
• Developed educational + edutainment interactive multimedia CD. A Complete suite for providing knowledge of various courses like BBS/BBA, BBE, BCA, HM, Law, MassCom, Finance.
• Technologies used: Adobe Flash CS4 Professional

Jan 2009 – May 2010 · 1 yr 4 mos

• It is a community based service club and a chapter of Rotary International, recognized by Govt. of India. I along with my team members, coordinated various socially relevant activities like plays by disabled students, career related talks, blood donation camps etc. in collaboration with various NGOs in NCR region like Masoom Duniya, Jagriti, Deepalya, Ivolunteer, India bridge the gap, Rotary International, Sankalp, Pratham and over 150 enthusiastic members.

Jun 2008 – Aug 2008 · 2 mos

• Alchemist is a professional coaching MBA institute. This company specialize in providing structurally designed and technology driven learning for CAT. It has excellence in BBA, Law, Hotel Management.
• Enhanced the LMS system and the detection of OMR, OCR and ICR from a given template. It has been incorporated in Alchemist’s online test interface which has automated the paper checking system and helped in saving lot of paper evaluation time.
• Technologies used: ASP.Net with C#