We are Uber. The go-getters. The kind of people who are relentless about our mission to help people go anywhere and get anything and earn their way. Movement is what we power. It’s our lifeblood. It runs through our veins. It’s what gets us out of bed each morning. It pushes us to constantly reimagine how we can move better. For you. For all the places you want to go. For all the things you want to get. For all the ways you want to earn. Across the entire world. In real time. At the incredible speed of now.

The idea for Uber was born on a snowy night in Paris in 2008, and ever since then our DNA of reimagination and reinvention carries on. We’ve grown into a global platform powering flexible earnings and the movement of people and things in ever expanding ways. We’ve gone from connecting rides on 4 wheels to 2 wheels to 18-wheel freight deliveries. From takeout meals to daily essentials to prescription drugs to just about anything you need at any time and earning your way. From drivers with background checks to real-time verification, safety is a top priority every single day. At Uber, the pursuit of reimagination is never finished, never stops, and is always just beginning.

Executive Education in Leadership and Strategy from HBS professors. It involved 8 case studies across Industries and Functions

Harvard Business School Online

Activities and Societies: Desktop File Browser and Multimedia Player on Mobile(technologies J2ME for client, Servlet at server side).

Underwent training in HP-UNIX by Hewlett-Packard during February 2006 – June 2006 in College.

PESIT, Bangalore

Cambridge School Noida

Uber’s Fulfillment platform: It powers real-time global scale shopping and logistics systems.
I as a tech lead in the Finalization domain led the team to deliver many cross-org and intra-org initiatives to deliver a new Finalization stack and modernize the existing core endpoint stack for Fulfillment. 
Projects included delivering a newer Finalization stack with onboarding Rides, and 3rd party supply (UK taxis - Autocab, NYC taxis - CMT) onto it with different pricing strategies ex. Uber setting a price or 3p setting its price. Built it as a generic Finalization stack to enable Eats onboarding. This layer enables long-term persistence, and money movement for both Rides and Eats. Team size: 9 people.
Some of the other projects in the Fulfillment domain include: 1) Redesigning core trip endpoints by establishing a newer Fulfillment layering architecture 2) Failed orders payout resolution 3) Cross-selling primitive in Fulfillment 4) Critical path analysis of the Fulfillment endpoints; Published paper (https://drive.google.com/file/d/1d0AAsKP7ROUeXtPc-5OlyHgiDp3I6rOW/view?usp=sharing) in USENIX ATC (https://www.usenix.org/conference/atc22/presentation/zhang-zhizhou); Received Uber developer platform technology award.

Senior Staff Engineer

Staff Software Engineer

Marketplace Edge Gateway platform: It exposes any API to the world for all teams at Uber. 
I as a tech lead of the Edge gateway platform led the delivery of the platform overall in production. It serves currently 1600 APIs. 
To enable this scale, iteratively delivered on many other platform features across themes of Developer experience, Scalability, Reliability like backward compatible mobile interfaces, build optimization, unified testing strategy, onboarding external partners API, codeless push message onboarding, security pipeline, meltdown prevention, and building internal stack’s edge community. Uber eng blog post [1] [2] featured on ycombinator news front page.
Financial platform: Built leading a team of 4 solving for accurate streaming aggregations of events (3x Uber's trip scale). Real-time P&L platform powers slice and dice of economic metrics across various dimensions.

Tech Lead - Sr Software Engineer

Adserving Monetization platform
Event processor framework: Conceptualized, Architected, built leading a team of 5 solving for Generic event processing flows at InMobi. Handles 1 billion events daily. Replaced older system which helped in reducing delays to 2 minutes from 13 minutes, reducing opportunity loss and publisher’s extra payout by upto 3.5%.
Deal Health reporting pipeline: Conceptualized, Architected, built which provides feedback to partner manager to monitor deal health lowering losses by upto 30%. Ad Serving Feedback optimization in pipeline.

Architect

InMobi Book keeping system: Architected, built leading a team of 4; capable of handling peak QPS of 2500.
Channel Ad Server : Single handedly Re-Architected along with performance optimization in 3 months which increased request handling capacity from 300 million to over 2 billion daily.

Technical Lead

Smartpay
Redesigned platform by breaking a monolith single service into 5 different services like online transaction system, post processing, and subscription renewal systems handling 10 million transaction daily.
Full rewrite of over 1 lac line of code was done in 4 months, with 30 % code written by me. Performance improved by 350%.

Senior Software Development Engineer

Software Development Engineer

IDM Designer: Allows design, test, and document identity manager solution in test/network mode.
Implemented features for package manager requirements which allows you to package your identity manager solution with policies/configuration.
iManLite: Next generation web-based administration console provides customized access to network administration utilities. Designed and implemented a next-gen widgetized view-based tool similar to iGoogle.

Sr Software Engineer

Evolution: Open source email, calendar and address book in one application.
Implemented advance search and show options capability for Task/Memo/Calendar Management. My name got listed in a GNOME Evolution product credit list.