Curriculum Vitae // Resume of Aaron Levin

4.1. Staff Software Engineer @ Stripe

• March 2021 - Present¶
• url: https://www.stripe.com/¶

Focused on Real-time OLAP databases and analytics.¶

Staffed team dedicated to Real-time OLAP at Stripe.¶

Simultaneously improved legacy OLAP systems while building a multi-year roadmap built on Apache Pinot.¶

Relevant technology:¶

• Apache Pinot¶
• Apache Spark¶
• Summingbird¶
• Scalding¶

4.2. Infrastructure Engineer @ Stripe

• December 2017 - March 2021¶
• url: https://www.stripe.com/¶

Member of Stripe's Streaming team.¶

Real-time data aggregation and asynchronous processing.¶

Focused on Apache Flink¶

Designed Stripe's first Flink clusters and applicationscluster and applications.¶

Developed infrastructure to redact Stripe's massive event archives¶

Relevant technology:¶

• Apache Kafka¶
• Apache Flink¶
• Apache Hadoop¶
• NSQ¶
• Scala¶
• Ruby¶

4.3. Director of Data Science (interim) @ SoundCloud

• July 2017 - December 2017¶
• url: https://www.soundcloud.com/¶

Lead Data Science initiatives across SoundCloud.¶

Represent Data Science on SoundCloud's Product Leadership Council.¶

Manage Data Science workflows in a constrained, post-layoff environment while optimizing for retention and service delivery.¶

4.4. Data Science Manager @ SoundCloud

• January 2017 - July 2017¶
• url: https://www.soundcloud.com/¶

First Data Science manager in SoundCloud's newly established Data Science organization.¶

Managed 12 Data Scientists across several disciplines (Search, Recommendations, Playback, Notifications).¶

Established the Data Science practice and workflow in partnership with Engineering and Product managers.¶

Initiated Data Science Sessions: a bi-weekly opportunity to present and receive feedback on work.¶

Initiated the Data Sprint: a quarterly offsite allowing Data Scientists to explore new ideas (inspired by Google's Design Sprint)¶

4.5. Machine Learning Engineer @ SoundCloud

• September 2015 - January 2017¶
• url: https://www.soundcloud.com/¶

Implemented and launched SoundCloud's The Upload, a novel, personalized recommendation system for content less than four days old.¶

Approximate Nearest Neighbour Search via Locality Sensitive Hashing for SoundCloud's recommendation system.¶

Managing data pipeline and analytics infrastructure for data scientists.¶

Stewardship of SoundCloud's job scheduling tools.¶

Relevant technology:¶

• Apache Spark¶
• Apache Haddop¶
• Scala¶
• Redshift¶
• Haskell¶
• Go¶
• Ruby¶

4.6. Sr. Software Engineer @ Aterica Health

• September 2014 - August 2014¶
• url: https://www.aterica.com/¶

Designing and building scalable systems for network-aware, embedded devices (IoT) built to improve health and save lives.¶

Relevant technology:¶

• Haskell¶
• Google Compute Engine¶
• Google Container Engine¶
• Docker¶
• Security and binary protocols for embedded devices (IoT)¶
• EDSLs¶
• REST¶
• OAuth 2.0¶
• JWT¶
• PostgreSQL¶

4.7. Data Scientist @ Demeure

• January 2014 - September 2014¶
• url: https://www.metamarketplace.com/¶

Search and data infrastructure powered by Apache Storm, elasticsearch, and DynamoDB.¶

Relevant technology:¶

• Apache Storm¶
• elasticsearch¶
• DynamoDB¶
• Ruby¶
• Clojure¶
• Java¶

4.8. Software Engineer @ Sortable

• August 2012 - January 2014¶
• url: http://sortable.com/¶

Full-stack engineer building a product comparison platform empowering consumers to make decisions easier and data-driven.¶

Relevant technology:¶

• Scala¶
• AWS¶
• elasticsearch¶
• PostgreSQL¶
• Redis¶
• memcached¶
• Python¶

4.9. Content Analyst @ Kobo

• May 2012 - August 2012¶
• url: https://store.kobobooks.com/en-ca/¶

Developing unique algorithms to monitor content performance and pricing strategies for Kobo's eBooks.¶

Relevant technology:¶

• R¶
• Python¶
• SQLServer¶

4.10. Web Analytics Specialist @ Mediative

• October 2011 - March 2012¶
• url: http://www.mediative.com/¶

As a lead analyst, I delivered highly-actionable and creative dashboards for our clients¶

Relevant technology:¶

• Python¶
• Excel¶
• Google Analytics¶

6.1. Tech Talks

• A Tale of Dual Sources: Pictures of Grief and The Job Manager's Clock (Flink Forward, Berlin, 2019)¶
• Conjure ye FileSystem, transmorgifier! (StarCon, Wateroo, 2019)¶
• The AI Landscape in Europe (panel) (MI Summit, Berlin, July 2017)¶
• Mastering Typeclass Induction (TypeLevel Summit, Copenhagen, June 2017)¶
• Finding Friends in High-Dimensions; Locality Sensitive Hashing for Fun and Friendliness! (!!Con, NYC, May 2017)¶
• The Dialectics of Type-Level Programming (LambdaWorld, Spain, October 2016)¶
• Propositions As Types (Intersections KW, June 2015)¶
• Dependent Haskell (Intersections KW, April 2015)¶
• Commutativity and Quantum Mechanics (Intersections KW, February 2015)¶
• The Algebra of Algebraic Data Types and the Calculus of Mutations (Intersections KW, August 2014)¶
• What is Monad? (Scala MeetUp, April 2014)¶

6.2. Art and Culture Talks

• On Building Community (with Marie Flanagan) (CHUO Volunteer Appreciation, February 2015)¶
• NCRC 2014 Keynote (with Marie Flanagan) (National Campus/Community Radio Conference, June 2014)¶
• Open Business: Fear, Vulnerability, and Profit$ in the Open World (with Marie Flanagan) (Halifax Pop Explosion, October 2013)¶
• Accessibility (with Marie Flanagan) (Halifax Pop Explosion, October 2013)¶

8.1. Weird Canada / Wyrd Arts Initiatives

I founded Weird Canada in 2009 to create a space for people to enthuse about emerging and experimental Canadian music. Despite Weird Canada's focus on physically-released (often cassette), fringe music, the site grew to national acclaim, eventually winning CBC Radio 3's "Best Indie Music Website in Canada" award. After the hard work of Executive Director Marie Flanagan, the site has over 500 volunteers, is fully bilingual, ad-free, and has representation in every province and territory in Canada.¶

I am currently Weird Canada's Creative Director and my main duties involve ensuring the site's curatorial vision is maintained across the site and our online store Wyrd Distro.¶

8.2. Intersections KW

Steven Taschuk and I founded Intersections KW to create a space of enthusiasm for pure mathematics, programming languages, computer science, and data science. We've had over eight meetups and hosted talks from Christopher Olah and Russell O'Connor on diverse topics such as Constructive Logic, Deep Neural Networks, and inventing Bezier splines in the age of Archimedes.¶

8.3. Vipassana Meditation

I am a Vipassana meditator as taught by S. N. Goenka. Each year I take a 10-day course where we practice silent meditation for 11hrs. each day.¶

8.4. Record Collecting

For over fifteen years I have been collecting (and sometimes selling) used records. I have focused on independent and privately-released Canadian music from the 60s, 70s, and 80s, especially experimental or fringe music.¶

In 2007, a friend and I found a record by an artist named Lewis. After many years of champion the strange, unassuming LP within underground communities of record collectors, Lewis' album found international notoriety for reasons I still don't properly understand. I was even interviewed on CBC's As It Happens.¶