About Sift Science

Sift Science is a tight-knit team with a passion for data. In past lives, we've worked on e-commerce analytics, payments, anti-spam, sentiment analysis, speech recognition, search quality, text recognition, and more.

We're looking for great people to join us in San Francisco, CA. We like board games, yummy food, and interesting problems.

Jason Tan


Jason loves beautiful user interfaces and building amazing teams. Before Sift, he was the CTO at BuzzLabs, first engineer at Optify, and an early engineer at Zillow.

Fred Sadaghiani


Fred loves building well-designed, robust, scalable systems. Before Sift, he was a tech lead at Google, Principal Engineer at Jambool, CTO at Teachstreet, product lead at Zillow, and engineer at Amazon.

Doug Beeferman

Tech Lead

Doug loves analyzing and visualizing data. Before Sift, he worked at Google on ads quality, IP geolocation, speech recognition, and economics; a research scientist at Lycos and a grad student at CMU.

Jacob Burnim

Director of Engineering

Jacob joins Sift after finishing his PhD on lightweight specifications for parallel software at UC Berkeley. Before Berkeley, he applied machine learning to search ranking at Google.

Stephanie Yee

Director of Business Development

Stephanie loves black sweaters, eating, and post-it notes. Before Sift, she worked with large eCommerce companies at Google. She was also at Vector Capital, and Bain & Company.

Gary Lee


Gary loves the outdoors and enjoys creating nice things that augment data with human intellect. He graduated from Stanford with a BS and most of an MS in Computer Science. He has worked as an Engineer and a Product Manager at Apple and  Nextdoor.

Tony Chu


Tony is constantly thinking about how design helps people understand and act. Before Sift, he studied interaction design at the School of Visual Arts, and tried to fix Congress with a fancy infographic.

Tai-Jin Lee


Tai-Jin enjoys playing piano, playing and watching Starcraft, munching on esoteric foods, and automating everything. Before Sift he was the jack of all trades at HealthLoop and TrialPay.

Andrey Gusev

Tech Lead

Andrey enjoys machine learning, search, NLP, and distributed systems. Before Sift, Andrey was a lead engineer at salesforce.com working on search and machine learning systems; a grad student researching NLP at Stanford, and a student at Illinois.

Emily Chin

Brand Manager

Emily is particularly passionate about proper grammar and punctuation, lunges, and baked goods. Her background includes teaching at USC, Master of Public Diplomacy degree, and 3 years managing Nike marketing accounts. She enjoys running slowly and being overly enthusiastic.

Aaron Beppu


Aaron loves playing with data, but also enjoys travel, seitan, bossa nova guitar, and hugging strangers online. Previously he has worked on search ranking, datamining, analytics infrastructure and distributed systems at Etsy and A9.

Micah Wylde


Micah loves building reliable distributed systems, folk music and the outdoors. Before Sift he was working on large-scale data processing infrastructure at Quantcast.

Alex Lopatin


Alex enjoys exploring the city, befriending dogs, eating burritos, and building cool stuff such as web apps, games, and 3d models. Before Sift, he was an intern at Rdio and InternMatch, and a student at Illinois.

Katherine Loh

Solutions Engineer

Katherine enjoys baking, rock climbing & chasing her dog. Prior to Sift, she supported strategic partnerships for Google Chrome and Google Registry.

Liz Young

Talent Manager

Liz was a singer in a past life. She currently spends her days focused on acquiring, retaining, training, and supporting Sift's amazing talent. She has previously worked with other Bay Area startups in technical recruiting and people operations. Liz is a huge fan of mediterranean food, red wine, hiking, camping, and delicious coffee.

Sripad Sriram

Product Manager

Sripad is passionate about data, cooking, road biking and live music. Prior to Sift, Sripad worked in product, marketing and data science roles at LinkedIn and Path as well as spending some time researching health care and water delivery at a non-profit in India.

Erica Schild

Business Associate

Erica loves solving complex business problems and creating change in organizations. Prior to Sift, she worked on implementing new regulatory requirements for a regional bank. She studied Russian at Yale and enjoys cooking, music, yoga, and traveling.

Joey Robinson


Joey enjoys machine learning, swimming, and playing ping-pong. He is currently pursuing a B.S. in Computer Science at Carnegie Mellon. In the past, he has interned at Audience, NREC, and BigML.

Kai Morrison

Operations Manager

Kai loves creating organization, procedures, best practice policies, and other things that people usually want someone else to do. His past lives include Light Designer for events, Fight Choreographer for stage and film, and professional actor.

Arjun Rao


Arjun spends his free time watching (and playing) soccer, working on side projects, and catching up on TV shows. He is currently pursuing a Bachelor’s Degree in Computer Science at UC Berkeley and interned for eBay Inc. at StubHub! last summer.

Taylor Lentz


Taylor loves Senor Sisig, Ice Cream, Ultimate, swimming, hiking, math, and shoes. Taylor just graduated from Tufts and in the past she has spent time at Rdio, Salesforce, Google, and MobileRealtyApps.

Keren Gu


Keren loves sailing, doing math, watching TV, and playing with cats. In her spare time, she likes to organize things and work on random side projects. She recently graduated from MIT with B.S. in Math and Computer Science, and is currently pursing a M.Eng. in Computer Science.

Yoav Schatzberg

Solutions Engineer

Yoav enjoys rock climbing, surfing, exploring San Francisco, and all-you-can-eat restaurants of all types. Before Sift Yoav worked as a Software Engineer on Software Defined Networking at Intel.

Jonathan Hsieh

Product Marketing Associate

Jonathan enjoys bhangra, trying new restaurants, yoga, and making extensive lists. Prior to Sift, he worked as a consultant in the technology and telecommunication sectors at Altman Vilandrie & Co.

Crystal Leanza

Executive Assistant

Crystal loves hardware stores, infographics, and Earl Grey. In her free time she wanders the wilderness looking for interesting rocks. Prior to Sift, she spent time in the Peace Corps and nonprofit realm.

John McSpedon


John enjoys cycling, mountain biking, outdoor sports, and travel. Last summer he interned at Facebook. He recently graduated Princeton with a degree in Computer Science.

Sarfaraz Rydhan

Solutions Engineer

Sarfaraz is an avid fan of the Oakland Raiders and enjoys watching 90's cartoons with his boys. Prior to Sift, he worked at ecommerce companies as an engineer and entrepreneur.

Alex Paino

Software Engineer

Alex enjoys rooting for the St. Louis Cardinals, hiking, travelling, and eating Thai food. He recently graduated from the University of Missouri, where he did ML research while earning BS's in Math and Computer Engineering. Prior to Sift, Alex interned at Microsoft and Facebook.

Hilfi Alkaff

Software Engineer

Hilfi loves traveling, playing badminton and trying out new bubble tea places in the Bay Area. He is a proud graduate of UIUC and UC Berkeley.

Eugenia Ho

Communications Designer

Eugenia enjoys pina coladas, playing video games, eating and watching movies. She recently graduated from UC Berkeley with a degree in Art History and Art Practice. Prior to Sift, she worked as a product designer at Klout.

Noah Grant


Noah loves third wave coffees and mid-shelf bourbons, and can often be found of biking from one end of Europe to another. He graduated a few years ago from UC Berkeley and previously worked in three other engineering disciplines before getting hooked on programming.

Kanak Biscuitwala


Kanak is a huge sports and technology enthusiast. Prior to joining Sift, he built distributed systems at LinkedIn, and brought mobile and social to journalism and finance at Stanford.

Lynda Phan


Lynda is a Bay Area native and loves dogs, garlic noodles, HIIT and dessert. Prior to Sift, Lynda recruited for Google, in addition to companies within Finance, Accounting and BioPharma industries.

Michael Weaver

Industry Relations Manager

Michael loves board games, video games, and games of peekaboo with his son. He is a graduate of Hendrix College. Before coming to Sift Science, Michael worked in fraud prevention for GameStop.com and Walmart.com.

Zorah Fung


Zorah spends her free time cooking, crafting, solving Nurikabe puzzles and building a collection of musical instruments. She is currently pursuing a Master's degree at University of Washington. Before Sift, she interned at Google twice and lectured the intro programming course at University of Washington.

Miguel Veloz

Strategic Account Manager

Miguel enjoys cooking, politics, reading, foreign languages, and all-night discussions on the nexus of art and pop culture. He's on a quest for the perfect London Fog. He graduated from Yale and worked in Google's Large Customer Sales division for several years.

Bill Hodak

Head of Marketing

Bill loves data, analytics, and fighting bad guys. Prior to Sift he led product marketing for New Relic and held product management and marketing roles at VMWare and Oracle.

Mindy Rupley


Mindy is passionate about puzzles, animal rights, and hiking on all 7 continents before she turns 35. She loves connecting people with their dream jobs and has recruited at a number of Bay Area startups.

Samir Rao

Business Associate

Samir enjoys watching mind-bending thrillers, consuming tacos and other delicious food, and thinking about how to make life more efficient. Prior to Sift, he was an investment banker at JP Morgan.

Grant Timmerman


Grant is a maker at heart who loves building the web, speaking Chinese, cooking gourmet food and dominating the hackathon world. He is currently pursuing a Bachelor's degree at University of Washington. Before Sift, he interned at LinkedIn, Tableau Software, and Nor1.

Nick Hurlburt


After working at Amazon, Nick did humanitarian work in Asia and Africa before coming back and finding a place at Sift. He continues to volunteer with non-profits when he isn't hunting for the best khao soi in San Francisco.

Che-Liang Chiou


Che-Liang enjoys reading comics. He wrote firmware for Chrome OS and data logging service for Android at Google. He is a terrible driver by the way.

Aaron Tietz

Solutions Engineer

Aaron used to be a preschool teacher in San Diego, often answering to the name King Triton #LittleMermaid #makebelieveontheplayground. More recently, he writes and films sketch comedy skits, somehow convincing his friends to be in them. Also, he loves bananas. And laughing with people. And bananas.

Vinson Lee

Business Development

Vinson is an adventurer and loves building rockstar teams. Prior to Sift, Vinson led operations initiatives for Google’s Commerce Risk team and data driven optimization for Disney Parks and Resorts.

Zeeshan Yoonas

Head of Sales

Zee enjoys competing (hoops, scrabble, tennis) and teaching (two boys in elementary school leave him no choice). Prior to Sift he led sales at Twilio, and business development for EC2 at Amazon Web Services.

Michelle Arguelles

Account Manager

Michelle loves traveling, a good sitcom, and a good cheese. Prior to Sift, she worked as a Risk Analyst at WePay. She graduated from Boston College with a degree in International Studies.



We're hiring!

Drop us a line if you're excited about predicting the future.


We're honored to be backed by industry experts in e-commerce, payments, and fraud.

  • Alex Rampell, TrialPay CEO
  • Alexis Ohanian, Reddit Co-founder
  • Chris Dixon, Andreessen Horowitz Partner
  • First Round Capital
  • Founder Collective
  • Garry Tan, YC Partner
  • Harj Taggar, YC Partner
  • Kevin Scott, LinkedIn SVP Engineering
  • Lee Linden, Karma CEO
  • Marc Benioff, Salesforce.com CEO
  • Max Levchin, PayPal Co-founder
  • Rich Barton, Expedia & Zillow.com Co-founder
  • Spark Capital
  • Start Fund
  • SV Angel
  • Union Square Ventures
  • Y Combinator