Our Team

The Minds (and Hearts) Behind the Platform

Andrew Smith Lewis

Co-founder / CEO

Andrew is one of the inventors of Cerego’s learning method, and started Cerego to create an open platform to improve memory and quantify knowledge. These days he spends equal time improving the product and working with our partners and advisors around the world. His passion for research stretches back to his high school days at Bronx Science, and inspired him to start three education and technology companies (including the Princeton Review of Japan) in Tokyo, where he lived for nearly 25 years.

Eric Young

Co-founder / Executive Chairman

Eric graduated from the American School in Japan and received a degree in Chemical Engineering from Yale University. Prior to co-founding Cerego, Eric had a twelve-year career as a bond and currency trader, where his last job was CEO of an Asia-based German securities company. As Executive Chairman of Cerego, Eric currently helps directs all company strategy and operations. He authored a Japanese book called “Social Learning Revolution” with Co-Founder Andrew Smith Lewis in 2008.

Paul Mumma


Paul leads business operations at Cerego, bringing the platform to the world and working to make sure our team and partners are successful. Before Cerego, he studied Classics as an undergrad at Harvard and grad student at Oxford, and worked as a strategy consultant with McKinsey in Chicago.

He’s a fan of languages living and dead, and takes pride in having lived on the east coast, west coast, and midwest. You’ll find him learning Norwegian and bartending facts on Cerego.

Kit Richert

Director of User Research

Kit focuses on UX and learning interaction at Cerego, from product design to content creation and user feedback. She has a PhD in school psychology from UC Berkeley, and has worked extensively in ed tech.

Outside of work, Kit produces independent films, and loves all things Lake Tahoe (especially when there is snow). On Cerego, Kit is working on her intermediate German.

Alex Volkovitsky

VP, Engineering

Alex is one of Cerego's world class engineers, seeking to improve the world through code. After finishing degrees in Computer Science and Math from Carnegie Mellon University, he spent two and a half years in Namibia working for the Ministry of Education as an IT specialist through the Peace Corps before moving to San Francisco.

A native of Russia, he spends most of his time collecting passports and passport stamps. He enjoys sunsets, long walks on the beach, and cliches.

Jinjutha Hancock

Engineering Lead

Jinjutha (“JJ”) works with the Cerego engineering team. Prior to joining Cerego, she studied computer science at the University of California, San Diego and worked at a number of startups.

She likes to work on social forward projects that are beneficial to the community, is a tea lover and a dogecoin millionaire.

Kyle Stewart

Engineering Lead

Kyle works to create a world class experience with Cerego's iOS app. Before Cerego, he studied Computer Science at the University of California, San Diego and started his own business creating iOS apps that help people around the world become fluent in English.

Aside from work, Kyle is a competitive tennis player, and also enjoys practicing his Japanese and Korean.

John Stoecker

Senior Engineer

John works as a web stack engineer at Cerego and has Computer Science and Music degrees from Stanford. Before Cerego, John worked as IT educator in the Peace Corps in Namibia and as a coder for an NGO health startup in India.

John enjoys eating street food, composing music on the piano, and reading novels on the metro.

Erik Strom

Senior Engineer

Erik works on the Cerego engineering team. Before joining, he studied Statistics and Development Studies at UC Berkeley and worked at a nonprofit consultancy in San Francisco.

When he's not at work, you can find him out on his bike or playing guitar.

Jon David Hague

VP, Solutions

Jon-David heads up Cerego’s partner relationships to ensure that their Cerego experience delivers their unique goals. After earning his Ph.D. in Classics from Boston University and teaching for a stint at Austin College, he held a variety of positions in sales, marketing, editorial, and people and product portfolio management at McGraw-Hill and Cengage. Outside of work, Jon-David enjoys trout fishing, playing guitar, and not breaking anything on his skateboard. On Cerego, he’s learning bird calls.

Iain Harlow

VP, Science

On top of the British flavour he brings to the office, Iain works with the engineers, designers and scientific advisors to improve the cutting-edge Cerego engine, understand its impact on learning and develop new features. Prior to joining Cerego he gained a PhD in Neuroinformatics and spent some time as a researcher, developing better ways to separate and measure memory processes.

Outside of work Iain enjoys walking, biking and (very) amateur photography. He’s using Cerego to brush up on his Norwegian, fill in some large gaps in his knowledge of cultural history, and learn just enough Fallout-4-related words to understand the engineers.

Rachelle Felzien

Mobile Engineer (Android)

Rachelle is Cerego’s Android engineer, with a degree in linguistics and minor in computer science from Eastern Michigan University. Before that, she was a student at Parsons the New School for Design in NYC, studying fashion. After graduation, she spent a year and a half in Northeast China teaching English and studying Mandarin — 你好世界! When not at work, Rachelle is an avid runner who loves to read, write, make things, and spend whole days outside, exploring.

Julia Chen

Product Designer

Julia is Cerego's Product Designer. She's a self-taught designer who studied Psychology at UC Santa Barbara. Outside of work, Julia enjoys drinking boba tea, making personalized greeting cards, and trying new brunch spots in SF. On Cerego, she's brushing up on knowledge about Brain Anatomy and Psychology that she learned (and forgot) as a Psychology major.

Darwin Wu

Engineering (Devops)

Darwin works as a DevOps engineer at Cerego. He graduated from Osaka University with majors in Political Science, Economics and Foreign Studies. Before joining Cerego, he was a Software Engineer at New Relic, working in one of the internal teams. Outside work, he can find him traveling, playing with cats or finding something new to learn.

Tyler Lyn Sorrow

Customer Support Manager

Michelle Lee

VP of Marketing

Michelle heads up marketing at Cerego where she is responsible for marketing strategy, product marketing, growth, and digital marketing efforts worldwide. Her 20 years of experience includes leading marketing strategy, branding, product, growth, and revenues at successful B2B, B2C, consumer, mobile, casual gaming, and edtech companies including Nasdaq's 6th best IPO of that year and Apple. She loves lifelong learning, studying new subjects, spending time in nature, reading, and sports.

Brian Gore

Account Executive

Brian has a deep background in sales, marketing, product development and content creation - both as a consultant and former employee of McGraw Hill/Random House. He is also a renown guitarist, and is founder of the International Guitar Night. He’s fluent in German, speaks Spanish, and enjoys reading, thinking, writing, cooking, spending time with family and friends, and meditating.

Eddie Dickey

QA Engineer

Eddie works as a QA Engineer on the Engineering team. He also answers customer support inquiries. He is excited to work at Cerego and promote effective ways to learn and he believes that learning how to learn is a key skill for the 21st century.

Outside of work, Eddie enjoys cross country skiing, hiking, golf and learning to play the guitar.

Mike Yen

Data Scientist

Michael works as a data scientist focused on natural language processing. He has a M.S. in physics from UC Berkeley and conducted research in ed tech before starting at Cerego. Outside of work, Mike enjoys rock climbing internationally and around the bay area.

Paul Henry

Senior Director, Corporate Sales

Paul Henry leads Cerego's efforts to build a global corporate sales team and is passionate about helping organizations realize the full potential and impact of training.


Paul earned his Bachelors degree from the University of Massachusetts, Amherst Isenberg School of Management. Paul has spent his career leading sales organizations and large sales teams with a variety of successful technology companies including,, JobFox, AdvancedMD, CareCloud, and Instructure. Paul's expertise is in building and growing successful sales teams in hyper growth companies.


Outside of work Paul enjoy's time with his fiancée and kids. Paul lives in Park City, UT and is an avid skier and mountain biker.

Ellison Weeks

Customer Success Manager

Ellison leads customer success at Cerego, and is committed to helping partners achieve incredible outcomes for their learners. He holds an Ed.M. from Harvard’s Graduate School of Education, and has taught English in Japan on the JET Program and developed an innovative curriculum for Stanford University-based cultural immersion programs. An avid traveler, he has explored more than 15 countries across 5 continents and enjoys hiking, listening to _Rock en Español_, and immersing himself in foreign languages and cultures. On Cerego, he’s brushing up on his Spanish.

Ralph Whitney

Senior Director, Government Sales

Ralph is leading our expansion efforts into the government market. After finishing degrees in Electrical Engineering and Computer Science from Massachusetts Institute of Technology, Ralph devoted most of his career to developing technology and growing a government training and simulation business for Motorola and General Dynamics.   


Ralph enjoys weightlifting, extreme off-road motorsports, and watching Marvel superhero movies and cartoons. Some of us never grow up!

Jake Wangler

Sales Development Representative

Jake grew up in Central Texas with a passion to improve the way people learn. With a diverse background in nontraditional education, Jake works to develop new corporate business for Cerego. On the weekends, Jake enjoys traveling, skiing, hiking and trying new things.

Bryan Tjokro

Sales Development Representative

At Cerego, Bryan Tjokro is a Sales Development Representative who focuses on developing education accounts. He has a Bachelor's of Science in Business Administration, Marketing from San Jose State University. Previous to Cerego, he worked at the NorCal Music and Arts Center.

In his spare time, Bryan enjoys playing games, watching TV shows and movies, and reading.

Emily Beugelmans

Instructional Designer

Emily works as an Instructional Designer and holds an M.A. in Classics from Vanderbilt University. Before joining Cerego, Emily spent several years in public relations, representing a variety of clients to local and national press. She enjoys exploring the Bay Area food scene, hiking, and keeping her Latin grammar sharp.

Lisa Leung

DevOps Engineer

Lisa is a DevOps engineer. Before Cerego, she did her studies in political science and sociology at UC Davis. She also studied fullstack engineering at Holberton School, an engineering program based in San Francisco. Outside of work, she enjoys playing games and blogging about tech.

Matt Walsh

Software Engineer

Matt works as a full stack engineer at Cerego. Born and raised in San Francisco, he has a background in Bay Area technology companies. He worked as an analyst at startups before transitioning into software engineering.

Outside of work, Matt enjoys cooking, black and white movies and teaching others how to code at Code Tenderloin.

Ryan Harris

Account Executive, Corporate Sales

Ryan is a seasoned software sales professional who thrives on helping organizations increase efficiencies through modern technology. Having spent many years in the corporate world, Ryan understands the value of corporate training. He's passionate about helping companies improve learning outcomes, while providing leaders much better insights into the true knowledge of their employees.

Ryan earned a Bachelor’s degree in Business and Information Systems from Brigham Young University. He loves coming up with new product inventions and uses Cerego to keep them fresh in his memory. In his free time, you can find him traveling, mountain biking, boating/camping, and playing sand volleyball and most recently, pickleball.