* Developed mission critical data pipeline to merge 100 external data sources into one index used to onboard doctors to new insurance plans (Airflow, Python, PySpark, EMR, ElasticSearch)* Freed up 40+ hours of weekly Operations time with automated web scrape job (Airflow, Python)* Replaced numerous Scala microservices with Python AWS Lambdas (Scala, Python)* Rapid replacement of crucial services dependent upon a suddenly dead, orphaned Kafka cluster* Develop code to interact with NFC chips and printers at venues (ARM, Docker, Yocto, Python)* Maintenance and extension of legacy systems (Kotlin, Scala, Ruby, Rails, Perl)

Nodejs/Server Side Ad Insertion

Designed self-learning black box trading system that simulates basic stock trade strategies and pursues best performing ones. * Version 1 (Python, App Engine, Stock Trading)* Version 2 (Go, Options Trading)

* Inherited 12-month overdue, dysfunctional project and delivered in under 3 months. (AMC YeahTV, PHP/Drupal)* Rewrote legacy, but crucial, invoicing system reducing runtime 98% (About.com, Ruby to Python)* Retrofit legacy single-tenant designed system to be multi-tenant (VenueNext, Ruby on Rails)

* Scaled rapidly growing infrastructure: >1 million emails a day -> 30 million emails a day, 30 million user profiles -> 300 million user profiles, 4 replica sets and 8 databases -> 13 replica sets and 38 databases * Developed backend ad assignment algorithm in PHP. Assigns ad blocks for multiple packages based on complex requirements: e.g. delivery amount, profile matching, date, spot availability* Designed ensemble of recommendation algorithms in PHP to present content based on detailed and generic user interests. System can switch between methods as performance changes* Made databases sing and dance: sharded (née partitioned) data up, down, left, right, sideways and more. Modulus/Hash mapping, config file mapping, db stored map, mapping on the fly* Modify existing PHP and Java code to pay off technical debt and decouple services through extensive use of queueing and asynchronous writes* Developed PHP toolkit to centrally manage all database replica set members in simple manner (hiding dbs, adding new set members, killing long running ops, stepping down masters, etc.)

* Optimize and debug existing codebase written in C#, ASP .NET, JavaScript, VBScript, HTML and CSS* Manage multiple developers and projects to balance quality and efficiency with expectations and tight deadlines* Write code using C#, ASP .NET, Perl and T-SQL to perform various ETL processes between internal and external sites* Redesigned SQL update processes for Corcoran.com resulting in a 2,000% speed increase* Reduced site downtime by 95% by rewriting T-SQL code to eliminate table locking on live site during hourly updates* Reverse engineered proprietary listings search system and re-wrote it in T-SQL* Increased efficacy of customer searches by developing C# application for pinpointing new listings within an arbitrary square block radius

* Managed IT infrastructure and end-user support for 300+ employees in three office locations* Developed C# application for inventory control and management of 15,000+ assets across 20 offices* Developed Frontend/Backend application in C# for remote management of Blackberry accounts* Developed Java application for Blackberry to eliminate duplicate contacts from address book* Mentored real estate brokers to develop IT independence in high-stress, fast paced environment

* Analyzed and tested hardware and software for Dell’s first color laser printer product* Engineered QA guidelines for testing and reporting at Dell’s new Singapore facility* Liaison to development groups in Tokyo and Southeast Asia to identify software/hardware bugs in prototypes* Worked under tight deadlines to meet launch dates for bringing products to market