Rob Rosenbaum

Software Engineer

Address

60-06 43rd Ave. Apt 1D - Woodside, NY 11377 - 734.239.2303

Url

Summary

I am looking for a role as tech lead, or a senior engineering role with management prospects.

Recent Employment

Lead Software Engineer, Greenhouse Software, March 2015 - April 2020

Greenhouse Software produces a suite of SaaS products for to facilitate businesses' hiring processes. The main stack is based on Ruby on Rails and PostgreSQL, served from AWS. The following is a sample of some of the work I did there:

Designed and implemented the system by which Greenhouse was able to horizontally scale its Recruiting product.
Designed and built an email-parsing scheduling system that integrates with Google Calendar and Microsoft Outlook.
Designed and built a reporting system supporting independent, user-selected row and column types, as well as numerous filters.
Added many features and fixes to the main Recruiting application
Added new endpoints to the Harvest and Assessment APIs.
Implemented API rate-limiting in Elixir, using memcached and custom business logic.
Refactored much legacy code.
Mentored multiple junior engineers, and taught coding skills to some engineering-adjacent non-programmers.

Lead Software Engineer, Newgrounds, April 2008 - November 2013

Newgrounds is an entertainment portal built on the LAMP stack, serving user-submitted games and animated shorts. Newgrounds is a high-traffic site with over one million registered users, and thus requires scalable code and diligent attention to database efficiency. My major projects there included:

The creation of a custom MVC framework for PHP, and the integration of this framework with the site's existing code base. This framework includes a flexible object-relational mapping, a concise configuration system, code generators, and a modular system for separating view and controller logic. Both the store and the art portal were built on this framework.
Leading the development team in a redesign of the site code, including the separation of legacy code into model, view, and controller components, and a rewrite of almost all the JavaScript on the site.
The Art Portal, a place for users to showcase their art work and receive feedback from other users. This includes file uploading and thumbnail creation, voting, reviews, user management, moderation tools, as well as an AJAX-based browsing application, which among other things includes back-button safe, bookmarkable AJAX states.
The Newgrounds store, complete with cart management, secure credit card processing, and, on the backend, a complete set of tools for product management, inventory, and shipping.
Migration of the source tree into version control, namely Subversion.
Various maintenance tasks.

Previous Experience

LectureTools, 2007 - 2008: LectureTools is a web-based learning tool used in large university lecture halls to improve student participation and understanding. Students can view lecture slides, ask question, respond to instructor questions, and even take notes, all through the web application. The instructors, on the other hand, have tools to graph student responses over time (to things such as multiple choice questions) and track student attendance. I was hired to rewrite the existing site from scratch in the Symfony framework, implementing new features such as a Web 2.0 interface using AJAX and a Flash-based file uploader. I also built the base CSS stylesheet, though both the CSS and the HTML templates have been modified by the client.
Fantasy Brains, 2007: Fantasy football site, developed using the Symfony framework. I was brought on half way through the project as lead developer to clean up a rather large mess left by a previous developer. The client expressed relief at finding a reliable, high-quality freelancer. My tasks included complex data management, creating a multi-tiered authentication scheme, and improving on the "Web 2.0" interface.
Matthew Santo, 2007: Filmmaker Matthew Santo's online video gallery. I built both the front-end, including the CSS stylesheet and the AJAX-based data retrieval, as well as a complete content management system (CMS) in PHP / MySQL. I also integrated the Flash video player with the pages' Javascript. Delivered in five days. (Not the current site)

Projects

Papuascript: A function-oriented dialect of JavaScript, written in JavaScript and the parser-generator Jison. Aspires to be more readable than JavaScript without being a different language.
NodAM: Node.js Asynchronous Monad - Combines the Continuation, State, and Error monads to simplify the callback-style IO of node.js.
Additional projects: Please refer to the Github and BitBucket links at the top of this document.

Other

I completed the bulk of a dual degree in physics and mathematics at Drexel University. I worked for 4 months in 1999 as an intern at Los Alamos National Laboratory, assisting in research on quantum computing.

The last non-freelance job I had in the IT industry, prior to Newgrounds, was back in 2000 at Destiny Web Solutions in Conshohocken, PA. I was a Principal Developer, designing and implementing web applications in Java and Perl for financial institutions, including Chase Manhattan, Fleet Financial Group, and Northern Trust. Destiny is no longer in business.

In the time between leaving Destiny and starting my freelance career, I did many things that I found very interesting that had nothing to do with web development, including building a cabin from scratch out of salvaged wood and found materials, and living in it for two years. This was great.