Marko Vujovic Email and Phone Number

Engineering lead for the Apollo Project - a machine learning entity resolution project that utilizes Spark, Airflow, EMR, XGBoost models, GraphFrames and Snowflake database technologies. We process million of records of data to produce an entity resolved business list for Small Business Card. I lead a high performing team that is responsible for many of the data pipelines and ingestion of vendor files.

Responsible for converting "The Tesla Collection" from a print media into an award winning digital platform where users can search articles by publication, author, subject and date. "The Tesla Collection" provides a one-of-a-kind look into the early days of X-Ray, Wireless, Remote Control, Robotics and Alternating Current electricity.Technology used :• CakePHP• JQuery• MySQL• Javascript ExtJS

• Introduced Travis CI (Continuous Integration), which promoted TDD (Test-Driven Development) on the core engineering platform• Led the testing and deployment of the E-commerce Platform onto AWS (EC2 instance, EBS, ELB, S3, VPC, etc.)• Architected the "Wait List" in stock notifications which resulted in over 25% conversion rate for product subscribers• Built the jackthreads.com product attribution system which enabled the faceted navigation of products by material, fit, weather, etc.• Built tools that enabled buyers to create products sold on jackthreads.com• Engineered the backend portion of the Purchase Order (PO) creation tool which included product landed cost integration• Built "Tryout" delivery and tracking system for order fulfillment and customer notifications• Architected the product filter functionality which enabled the dynamic generation of curated sales based on criteria (ex. brand, color, department, etc.)• Created the return shipment tracking and warehouse arrival notification system.• Integrated the core E-commerce platform with Newgistics API enabling customer return label generation• Refactored the legacy customer return refund system with extensive unit test coverage which improved code readability and decreased error/bug rates• Drastically improved the Fulfillment Yearly Cycle Count speed and operation resulting in over 99% inventory accuracy year-to-year• Refactored and upgraded the legacy JITR commerce platform which led to a 3x system capacity increase.• Led the platform stress testing of jackthreads.com for Black Friday/Cyber Monday 2015/2016 to ensure the site was able to perform and stay responsive• Utilized New Relic to address website performance issues and refactor code to increase processing speed• Utilized blazemeter.com/jmeter to simulate projected traffic targets and load test environmentsDevOps:• AWS - EC2, EBS, VPC, S3• Familiar with Ansible playbooks to spin up and down environments• Jenkins

• Inventory Management via MongoDB and MySQL• Mongostat and Mongo MMS to address performance and query optimization• Warehouse communication - Electronic data exchange via XML• Javascript Sencha Ext JS• PHP PECL Mongo driver• REST API end point • Netsuite integration via SOAP - included Purchase Order(s), Item Receipt(s), Inventory Item(s) and Custom Record(s)DevOps• Linux administration Red Hat and CentOS• VirtualBox• Vagrant for development environment• Ruby gem development for database snapshots• Holland Backup• AWS EC2 instances and Toolkit• Custom Shell scripts

• Web Development on the LAMP (Linux Apache MySQL PHP) stack• Built custom marketplace used by Fortune 500 company to provide additional rebates to vending customers.• Built PurchasePower marketplace used by leading US purchasing cooperative• Developed and maintained custom reporting applications used by various Fortune 500 companies.• Zend MVC Framework• MySQL tuning and optimization• APC caching• jQuery UI• SVN source code repository• Linux/Apache Admin• ESXi Server Virtualization

• MySQL Database Migration and Backup (Navicat)• MovableType Content Management System • PHP scripting

JavaScript Application Development (Quizzes, Printing Cost Calculator, etc.)Success Content Management System AdministrationBanner Creation on Main Page