Uber Payments- Uber core payments platform handling billions of transactions every day.- Led efforts to build hierarchical ledgers for transactions and accounts persistence across connected entities.- Led efforts in reducing losses in countries not supporting authorization or mandates 2FA transactionsUber Core Rider App- Lead effort to build Uber rider app checkout flow completely driven by backend.- Contributed to server driven UI frameworks for Uber rider/driver apps.

Fraud Detection Engineering:- Built a real-time Risk Platform (large scale distributed system) to run risk checks based on ML models, analysts modelled checks to prevent fraud in the Uber apps and protect Uber and its users.- This platform handles ~150k payloads/sec and is used in critical flows in the Uber.- Led multi-year project to increase availability of risk platform to 5 9s, leveraged core system design concepts: Functional Isolation, Decoupling, Leveraging cores effectively. - Led efforts in increasing the reliability of Risk Systems in the Uber and reducing friction for good users by reducing false positives.

- Developed data platforms for 15+ front office teams for various parts of data life cycle. - Data platforms include alert reporting and tracking system, validation framework, download framework, and data catalog platform.- Won hackathon: Developed autocomplete as a service. Microservice to provide autocomplete on firm datasets.

- Developed a web portal frontend+backend for ABS Traders to access P&L, Risk, P&L Attribution, Intraday P&L andtime series data- Developed ETL framework to process, validate and persist pre-trading data.- Responsible for fulfilment of trading requirements and high availability of systems during trading.

- Developed alert reporting and tracking system to track firm data issues for front office and back office both.- Developed an internal application to track and analyse new issues for convertible bonds in market.- Designed Python-based reporting infrastructure that integrates internal data-structures and creates complex email/web reports- Developed an internal application for research and analysis purpose on companies public reports and filings.

Developed core APIs for Informatica powercenter tool.