CatalyzeX helps researchers & engineers quickly find open-source AI code & know-how to bring their ambitious ideas to reality.We're building the global town square for computational builders & makers.CatalyzeX is funded by incredible early-stage investors like Unshackled Ventures, Kepler Ventures, On Deck, Abstraction Capital, Focal VC, Vibe Capital, and Basecamp Fund.We’re also backed by brilliant angels including Anthony Goldbloom (co-founder & CEO of Kaggle), Joe Fernandez and Binh Tran (co-founders of Klout), Slava Kovalevskyi (ex-Google Cloud AI manager), Ilya Kirnos (ex-Google tech lead on Gmail Ads, AdWords, Google Prediction Markets), Ritesh Malik (founder & CEO of Innov8 acq’d by OYO), and Akshay Chaturvedi (founder & CEO of Leverage Edu).

Select investments: Pika, Neuralace, Sandbox VR, Jar, Stripe, SpaceX, Hallparty

TED speaker and entrepreneur-in-residence, machine learning and AI.https://www.ted.com/talks/gaurav_ragtah_can_ai_make_us_more_lucky

Owned and led payment fraud prevention across Yelp and Eat24.Reduced credit card chargebacks by ~50%.Eat24 was acquired by Grubhub (from Yelp) in 2017.

- Worked on Nest's smart home machine learning models and drove anonymization for sensor data and metrics to respect people's privacy while extracting analytical value- Pattern-mined user purchasing behavior and helped build the first cross-functional initiative with the data platform team to drive product marketing, biz dev, and e-commerce strategy for Nest

Probabilistic modeling, topic models, bayesian inference, and recommendation systems with researchers from Blei Lab (David Blei) - machine learning lab at Columbia University.

Lithium provides a complete social platform to over 400 of the most well-known brands around the world - including Google, Microsoft, Twitter, eBay, Skype, HP, Sony, Fitbit, Sephora, and Autodesk. These brands rely on the Lithium Social Platform to power customer communities, respond to social media conversations at scale, and derive comprehensive social analytics.The Lithium platform has one of the largest digital footprints in the world, processing 45 billion interactions daily, with > 100 million monthly visitors and 750 million user profiles.

Klout is the standard for influence. Acquired by Lithium Technologies in March, 2014.- Enhanced the massive social data platform powering the Klout score, personalized social feed, user topical analysis, and biz analytics - 12B daily social signals for 620M+ users, 40B+ API hits monthly- Managed serving infrastructure and API for Klout For Business - enabling brands to build targeted audiences, run earned media campaigns with influencers, and explore in-depth campaign and audience stats- Led re-implementation of Klout Perks' business analytics pipeline to improve performance, robustness, recoverability, and extensibility through greater parallelization, efficient resource utilization, and major refactoring – reduced run-time 3X, from 9 to 3 hours- Shipped the klou.tt link shortener for sharing URLs on social networks – 25M+ klou.tt links shared through Klout- Launched a promoted post ad-targeting system for surfacing relevant branded content to users in their personalized social feeds- Saved the company thousands of dollars per month through optimizing keyword tracking for paid streaming social data from Gnip.- Won 2nd place at Klout Hackathon ’13 for an automated hashtag recommendation system for links shared on social networks

ThisYaThat is the smart way to buy books in India. Compare prices, delivery times, and payment options across leading online bookstores in India. http://www.thisyathat.com/- Member of the Wharton Venture Initiation Program (VIP) and supported by the Weiss Tech House- First non-US venture to receive an entrepreneurial grant from Wharton School’s Innovation Fund and winner of Sol C. Snider VIP Seed Award from Wharton Entrepreneurship- Received national media coverage - Yahoo Finance, Hindustan Times, TechCircle, YourStory, NextBigWhat, Pluggd.in etc.

Klout is the standard for influence. Acquired by Lithium Technologies in March, 2014.• Worked on Klout's API which currently serves 30 billion calls per month using Scala, Play Framework and Akka.• Created data endpoints for 3rd party clients such as Hootsuite as well as for Klout.com itself.• Optimized database queries for batched calls with noticeable speed-up - 15x and 5x increase in number of requests handled/second and concurrent requests, respectively. Also worked on data migration - SQL to HBase and MongoDB.• Implemented plusK leaderboard endpoints for Klout Moments (site relaunch with real-time scoring and influential moments http://techcrunch.com/2012/08/14/new-klout-score-redesign/).• Improved user session logging and analytics for web and mobile API.• Performed general site testing for Klout Moments launch.

Acquired by LinkedIn in May, 2012. Acquired by Microsoft in June 2016.Implemented new features and modified core back-end logic for SlideShare. Helped build: - Slideshow embed-views and slideshow tweets tracking - SlideShare analytics’ logging system - Automated extraction of embedded media + presentation metadata from slideshows and conversion of slideshows/powerpoints to html5 - SlideShare newsletter spam and bounce handling through SendGrid - Cleaner codebase through refactoring and identifying dead code + tables.Worked with Ruby on Rails, Amazon Web Services (AWS), Java, HTML5, and JavaScript.

• Assisted development team in coding and testing various project modules for software designed for clients in the relocation industry to handle all sales, operational and financial reporting requirements.• Worked with JSP, servlets, MySQL, and Tomcat. • Deployed a customized open-source timesheet management system (eHour) on the company’s local network.