Contact

• rob@robrosenbaum.com
• 734.239.2303
• LinkedIn profile
• GitHub profile

Manager of Technical Operations, Refersion, November 2021 - November 2022

Refersion offers an influencer and affiliate marketing tool as part of the Assembly SaaS platform. The stack is PHP, MySQL, Node.js, and React, built on an AWS backend. The Technical Operations team is responsible for tooling, developer experience, and other cross-cutting engineering concerns. We managed the team's tooling, local environments, and backend admin tools. We also filled in on product work when necessary. I designed and planned the projects for the team, mentored the individual contributors, did code reviews and paired refactors with them, and worked within the team as an IC. My direct contributions included:

• Designed and implemented a Github repo to consolidate 50+ existing repos for our Lambdas, including deployment via Github Actions, and migration script.
• Integrated and expanded Phinx for database migration automation.
• Maintained and updated CircleCI testing envrionment for all our repos.
• Refactored old admin panel, fix bugs, and add new functionality.
• Created and managed docker images for local development environments.

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

Greenhouse Software produces a suite of SaaS products 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.

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 PHP framework that could be used piecemeal, without requiring changes to the existing legacy codebase or data model. 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.
• 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 (defunct), with cart management, secure credit card processing, and, on the backend, a complete set of tools for product management, inventory, and shipping.
• 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.
• Migration of the source tree into version control, namely Subversion.
• Various maintenance tasks.

Freelancer, 2005 - 2008

Various clients.