Mark Koh Email & Phone Number

Denver, Co, Us

Denver, Colorado, United States

- Providing technical leadership in bringing Music Videos to Spotify, with specific focus in the Music Video recommendation space- Driving initiative to design, implement, and launch Concert Videos (live performances, studio recordings, radio shows, tiny desk concerts, etc)- https://artists.spotify.com/en/blog/your-music-videos-are-coming-to-spotify

Greater New York City Area

- Develop Spotify's core music recommendation systems which power features such as Discover Weekly, Daily Mix, Release Radar, etc.- Design and develop backend systems and data pipelines for training and serving production machine learning models at massive scale- Create machine learning and heuristical models to represent user musical taste profiles such as top artists, tracks, genres, moods, and activities- Maintained audio analysis systems for determining audio features and attributes such as danceability, energy, tempo, timbre, etc.- Interviewed over 150 candidates, and created interview questions which have become part of Spotify's "standard interview deck"

New York, United States

- Shot and edited photos for over 50 internal performances and events- Helped organize and photograph Sampled@Spotify, a producer-focused interview series

New York, United States

- Designed and built a knowledge base to aggregate and curate metadata on thousands of BigQuery datasets used for analytics and operations, as well as Research and Analyses performed at Spotify- Built a highly-tuned search engine using ElasticSearch which included term boosting, faceted search, and flexible filtering- Developed the backend system for surfacing and visualizing key company metrics and high-integrity business-critical data- Worked with Django, QlikSense, ElasticSearch, BigQuery, JenkinsCI, Docker, Puppet, and many other tools to build and deploy backend systems at Spotify

Greater Philadelphia Area

- Responsible for design and development of a fully launched platform which helps touring musicians manage and organize tour information- Lead the greenfield development effort to build a collaborative platform using AngularJS, Django, Swift, and Vagrant- Modeled and implemented role-based/configurable permission system, interactions between user accounts, among many other features- Architected, developed, and maintained the internal RESTful API to be consumed by Web, iOS, and Android applications- Built the Booksmart iOS application natively in Swift and integrated with Google Maps, Yelp, FlightStat, and other 3rd-party services- Oversaw and worked with developers and interns on development of new features for web, iOS, and Android applications- Formalized the development and release process, adding important measures such as code reviews, issue tracking, and source control best practices

Philadelphia

- Developed algorithms which could automatically stitch together concert videos together based on audio fingerprinting, culminating in the award-winning JamJar project (https://drexel.edu/cci/news/2016/June/concert-experience-app-jam-jar-wins-2016-cci-senior-project-competition/)- Researched Robot Dance Synthesis with humanoid robots (DARwIn-OP) using procedural generation with a modified implementation of Markov-Chain algorithms.- Developed the content management system for iNotes, an iOS orchestral annotation application for The Philadelphia Orchestra.- Collaborated with post-grad/Ph.D. students under Dr. Youngmoo Kim to design and build educational music applications.

Greater Philadelphia Area

- Maintain and develop RJMetrics' main product, a tool for Business Intelligence and big data analytics- Assist in development of tools used for pulling in data from third party sources including Shopify, Google Analytics, and MailChimp- Develop key components to a new data pipeline which replicate entire remote MySQL, MSSQL, PostgreSQL, and other SQL databases- Updated legacy PHP code to more scalable and complete SOA/MVC software architecture using AngularJS

Greater San Diego Area

- Developed the kernel for the Teradata Database system utilizing virtualization and concurrency for massive parallel processing.- Assisted in development for the database file system and SQL Query Optimizer.- Used C, GDB, and other unix and Teradata custom tools for development.- Contributed to a 7,000,000+ line enterprise code-base based on over 30 years of development.

Bala Cynwyd, Pa

- Developed and implemented C# ASP.NET applications for internal stakeholders (e.g.: Legal, Purchasing, HR).- Worked with a full-software-lifecycle development team including BA's, PM's, Testers, as well as other Developers. Performed Requirements Analysis and User Acceptance Testing with director-level stakeholders.- Utilized a variety of technologies including Web services, Advanced LINQ/SQL Queries, GeoIP Location detection, and PDF Rendering.- Developed innovative solutions to solve compatibility issues, server and client-side communications, and unified-code-base adaptation.

- Designed websites for a number of small businesses and organizations.- Implemented stylistic, easy to maintain page designs, with back-ends which allowed user-modification of the website.- Developed using HTML, CSS, PHP, JQuery, and JavaScript.

Philadelphia, Pa

- Instructed lab sessions, held office hours, and graded labs/homework assignments.

Worked with customers to help them find the ideal bicycle for them. Built, maintained, and repaired high-end road and mountain bikes.

Bs, Computer Science And Software Engineering

Activities and Societies: Pennoni Honors College, FIRST Robotics Team 4454 - Team Mentor, Drexel Student Ambassador, Alpha Epsilon Pi.

Education record

Activities and Societies: Boy Scouts of America - Eagle Scout, Connecticut Innovation Academy (CTIA) - Team Leader, BHS Yearbook.