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Jacob Rosenberg


Principal Engineer at Cruise

San Francisco, California

Jacob Rosenberg's Work Experience

Mission Lane


San Francisco, California

Valencia Data


San Francisco Bay Area

Founders Pledge


Jacob Rosenberg's Education

The Head-Royce School

1993 to 1997

The Bentley School

Rice University

Bachelor of Arts (B.A.), Computer Science

1997 to 2001

Jacob Rosenberg's Professional Skills Radar Chart

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38% Left Brained
62% Right Brained

Jacob Rosenberg's Estimated Salary Range

About Jacob Rosenberg's Current Company

Mission Lane

Frequently Asked Questions about Jacob Rosenberg

What company does Jacob Rosenberg work for?

Jacob Rosenberg works for Mission Lane

What is Jacob Rosenberg's role at Mission Lane?

Jacob Rosenberg is Advisor

What is Jacob Rosenberg's personal email address?

Jacob Rosenberg's personal email address is c****[email protected]

What is Jacob Rosenberg's business email address?

Jacob Rosenberg's business email addresses are j*****, l****[email protected], and j*****

What is Jacob Rosenberg's Phone Number?

Jacob Rosenberg's phone (213) ***-*100

What industry does Jacob Rosenberg work in?

Jacob Rosenberg works in the Internet industry.

Who are Jacob Rosenberg's colleagues?

Jacob Rosenberg's colleague is Grace Wang

About Jacob Rosenberg

📖 Summary

Advisor @ Mission Lane San Francisco, CaliforniaAdvisor @ Valencia Data San Francisco Bay AreaPledger @ Founders Pledge I am a proud member of the Founders Pledge community: A group of entrepreneurs and investors who have pledged to give a substantial part of future proceeds to charitable causes. Architect - CTO, Zynga Social Messaging and Communications @ Zynga Formed and scaled new Social Messaging and Communications (SMAC) team, chartered with centralizing key game features into new platforms including Email, SMS, and Push Notifications; Chat; Gifting and more. • Hired, grew, coached and managed over 25 engineers until hiring a Director of Engineering to replace management duties.• Worked closely with Product team to gather requirements for platform services that would add the most business leverage for game teams.• Designed and implemented core platform services to provide this functionality and oversaw the management of these systems in AWS. Responsible for development, testing, deployment, and operations: systems were comprised of over 10,000 amazon instances, and gifting system alone was processing 5 billion events per day at peak.• Worked with other CTOs across the company to set technologies standards, patterns/anti-patterns and best practices, and select key technologies. From September 2010 to February 2012 (1 year 6 months) Sr. Technical Yahoo! - Yahoo! Lifestyles @ Yahoo Worked as architect for new global lifestyles project, which involved launching an editorial-driven content site in over 30 countries on a short timeframe. Position involved technical responsibility for all elements of the Lifestyles stack including feed processing, data storage, web services layer, caching, frontend MVC layer, and browser/client interaction. From February 2009 to October 2009 (9 months) San Francisco, California, United StatesInterim CTO @ Mission Lane Helped spin-out Mission Lane as a de-novo company representing the whole of LendUp's credit card division. Worked to design team, guide and coach employees through the transition period, and oversee and manage the technology separation between the two companies.In cooperation with the team at LendUp, we successfully separated LendUp and Mission Lane's technology stack in just three months, allowing each team to operate independently. Assisted in raising $500m in new capital. From January 2019 to September 2019 (9 months) San Francisco Bay AreaLead Developer - Zynga Network Products @ Zynga Worked to help scale messaging and communication features of multiple hit Zynga games, including Mafia Wars, Farmville, Fishville, Cafeworld, Petville, and more. • Built bespoke email infrastructure that helped scale Zynga from sending zero emails to being the eighth largest sender of email on the internet in three months. • Dropped in to game teams to help remove bottlenecks in core systems as games scaled to tens of millions of daily active users and billions of messages sent. From November 2009 to September 2010 (11 months) Principal Engineer @ Cruise I joined Cruise as the Principal Engineer for the infrastructure team in 2020 to help put the world’s most advanced self-driving vehicles on the road. I'm working on designing and advancing a cohesive technical roadmap for Cruise's cloud infrastructure, helping every team at the company develop, build, deploy, and operate software at the scale necessary to solve the hardest engineering challenge of our generation. San Francisco, California, United StatesCo-founder and CTO @ LendUp Founded and scaled LendUp. LendUp is the first company in the US to lend money using a mobile-optimized experience and provide a fully automated instant approval and funding. Our focus is on underserved consumers with an emphasis on improving their financial health. LendUp was named one of the "World's Most Innovative Companies" in 2018 by Fast Company, and is backed by more than $325MM in funding from leading investors such as Y-Combinator, Google Ventures, QED Investors, StartFund, Kleiner-Perkins, Thomvest Ventures, Kapor Capital, Bronze Investments, Data Collective, Susa Ventures, Radicle Impact, Victory Park Capital and many amazing angels and entrepreneurs.Involved with all parts of the company from its initial incarnation at our kitchen table through Y Combinator, launching multiple lending products, growing the engineering team, raising 5 rounds of funding totaling over $325 million in debt and equity, scaling revenue to over $100m ARR, and the eventual spin-out of the credit card business as Mission Lane.Responsible for all technical aspects of the business including the software, engineering team, technical operations, and IT. Scaled engineering and IT teams to over 70 employees. Temporarily also responsible for our people teams, including People Operations and Talent. From February 2012 to December 2018 (6 years 11 months) San Francisco Bay AreaSr. Technical Yahoo! - Yahoo! Video/Jumpcut @ Yahoo Utilized the platform built during tenure at Yahoo! Search to design and oversee implementation of a global, scalable website that centralized all Yahoo! video content in one location ( Successfully supervised the building of that product by providing technical guidance to a team of several engineers, and was responsible for both the US launch of the product and successive rollout in over 15 countries within just a few months of US launch. From July 2007 to February 2009 (1 year 8 months) San Francisco, California, United StatesSr. Technical Yahoo! - Yahoo! Search @ Yahoo Worked on the implementation of countless features on Yahoo! Search including direct display shortcuts, social search functionality (MyWeb), Site Explorer, and image search, among others. Contributed significantly to the launch of Yahoo!’s proprietary search product (YST) and the removal of Google as the primary content provider for Yahoo! Search. Built and maintained Yahoo! News search application and Yahoo! Audio/Music search. Oversaw complete rewrite of Yahoo! Search frontend PHP and C++ codebase, resulting in a 2x increase in performance (latency) using only 1⁄2 the resources (CPU throughput and memory utilization). Designed and co-authored a full-featured framework based on MVC principles that included templating, configuration system, data retrieval/modeling, workflow management, input processing, debugging and logging, and tools for providing metrics/analysis of user behavior. Framework is still in use by Yahoo! Search in over 30 countries as well as dozens of other Yahoo! properties. Developed and maintained C++ application (and PHP extension interface) that handled complex workflows of concurrent HTTP connections to multiple web services using non-blocking I/O and libevent/statethreads. From June 2003 to July 2007 (4 years 2 months) Technical Yahoo! - Yahoo! Auctions @ Yahoo Contributed a significant number of features and functionality to Yahoo! Auctions C++ codebase. Oversaw implementation of major integration with partner site uBid, as well as the migration from internal Yahoo! templating language to PHP. Gained experience working with real-time and event-driven complex systems, as well as handling data replication issues and maintaining transactional integrity in a high-activity, low-latency system. From September 2001 to June 2003 (1 year 10 months) Sunnyvale, California, United StatesTechnical Intern @ Yahoo Joined Yahoo! as the 80th employee at age 16. Worked as a technical intern during the first days of Yahoo!, contributing to the development of applications and brands that are still in use. Developed features on multiple properties, including Yahoo! front page, classifieds, travel, and auctions. From June 1996 to September 2001 (5 years 4 months) Sunnyvale, California

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In a nutshell

Jacob Rosenberg's Personality Type

Introversion (I), Sensing (S), Feeling (F), Perceiving (P)

Average Tenure

2 year(s), 7 month(s)

Jacob Rosenberg's Willingness to Change Jobs



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