Peter Goldstein

Developed a system that implements a novel and eventually patented approach to automating email authentication; the definition of DMARC, SPF, and DKIM records makes it easy to identify and configure all email-sending services for authentication and systems in use by a company or nonprofit, blocking all other systems. It allows organizations to ensure that only those services and systems they explicitly allow can deliver email from their domain to recipients' inboxes. This improves both security and deliverability.

To implement this idea, I built a DNS system consisting of a set of highly scalable DNS servers written in Go and a Ruby on Rails web application that handled configuration and reporting. The whole system was deployed in AWS. I wrote the entirety of the first version myself.

This first version of the system was used by a large number of multi-billion dollar companies, securing an enormous number of emails per day. It became the basis for the Valimail business, which went on to raise tens of millions of dollars in VC funding and remains a going concern today.

Dalli is the preeminent Memcached client in the Ruby ecosystem. It has been downloaded 60+ million times and is used by hundreds of thousands of applications worldwide.

I took over as a maintainer of Dalli from the original developer over six years ago. During that time, I managed contributions from the community, triaged support issues, and answered questions directly and via documentation.

About three months ago, I completed a rewrite of the core Dalli functionality to bring it up to modern Ruby standards and address open issues and new Memcached capabilities. Most notably, I added support for using Memcached's new meta protocol with the gem.

I also significantly revised the gem's documentation, rewriting it for clarity and leveraging GitHub's built-in wiki for better organization.

A Ruby on Rails / Spree eCommerce application to support a luxury consignment company and replace their current externally hosted application solution.

I came in as a 'CTO for Hire' and took over the project, which had been in process for one year and a half. I addressed major technical and project management issues, designing technical solutions and refocusing the team on necessary steps to meet the business's requirements. I also worked with a DevOps contractor to ensure the application's production environment would scale.

In addition to these architectural and management responsibilities, I did a lot of "hands-on" coding - implementing a number of key features personally and ensuring they worked as expected. This included the product's continuous integration pipeline (using Jenkins), JSON APIs for intercomponent communication, social login using the Facebook SDK, and implementing text-based search using Lucene / Solr.

The application was delivered to production in four months, and the business was able to successfully transition to the new application, growing on that platform for the next several years.