Praetorian Diana

I worked with Nathan Sportsman of Praetorian to help design the company's crowdsourcing platform, Diana, which offers bug hunters variable bounties for vulnerabilities identified.

It’s very rare to have the chance to work with someone who embodies the spirit of perfection. The quality of the deliverables, the reliability of the professional, and the friendliness of the individual all made it an absolute pleasure to work with Gideon. You’ve nailed what extraordinary work looks like. We’ve been so completely blown away with everything about our experience that Gideon will always have an open and non-expiring offer from Praetorian. If you decide to enter the job market, call us. Seriously. If you ever need a client reference, you got it. Unlimited requests. We are very lucky to have worked with you.
— Nathan Sportsman (Founder, CEO & CTO of Praetorian)

Empirical Systems

I served as the design consultant for Empirical Systems, a spinout of MIT’s Probabilistic Computing Project.

I also serve as an advisor to Empircal.

Tamr DataHub

I led the design of Tamr's DataHub to help CDOs, CIOs, architects and data consumers to easily access their logical entity types (e.g., customers, suppliers, products). I worked with a small team using an agile,  mobile-first lifecycle.

Tamr Catalog

I served as lead designer (working with  Ben Fry of Fathom) and product manager for Catalog Beta, taking the product from concept to prototype to market. Catalog is a web app that helps organizations understand their data in their social context.

 I was interviewed to discuss Catalog and "dark data" by Professor Roberto Zicari of

Tamr Unify

I have been leading the design of Unify--the core offering from Tamr. Unify combines machine learning and expert-sourcing to automate most of the work of integrating big data.

The Department of Veterans Affairs

I served as UX consultant in developing a prototype for the Department of Veterans Affairs that offers an efficient visualization of 20K healthcare facilities around the country.


I designed and developed SpaceTimer as a free, conceptual iOS app that reimagines a handful of timers & stopwatches. It's fast thanks to a novel swiping gesture for setting and disposing clocks and the use of space as a mnemonic device, eliminating the need to type labels.

Download SpaceTimer.


I designed and developed ThoughtLog as a free, conceptual macOS app for the (re)collection of spontaneous thought. It eschews notes, titles, tags & folders. Like Notational Velocity, it offers a very low interaction cost. Rather than placing your thoughts in a document, it places them in a collection that it automatically separates, sorts, filters and time-stamps, while ever-resetting the point of insertion.

Download ThoughtLog.


I designed and developed Char as a conceptual text-editor/engine with a scriptable, physics-enabled, Zoomable User-Interface (ZUI). I completed this work for my Masters in questioning the ubiquitous conventions of text manipulation, taking inspiration from ideas in distributed cognition and the role of causality in interface-design.


I co-created TurkGate, or Grouping and Access Tools for External surveys (for use with Amazon Mechanical Turk), with Adam Darlow during my PhD at Brown. TurkGate is for researchers that recruit through Mechanical Turk but run their studies on other sites. It provides better control and verification of Mechanical Turk workers' access to an external site. TurkGate was created for the purpose of conducting psychological experiments. As such, it provides easy-to-use, research-oriented features not included with Amazon Mechanical Turk.


I co-founded DataScale consulting with Justin DeBrabant to help organizations improve their UX and systems for large scale data management, analysis and visualization.

Sally Mann

I worked with renowned photographer Sally Mann in creating an online portfolio of her work.

Per Second Press

I co-designed and developed the Per Second Press website with Vi Khi Nao, receiver of the John Hawkes and Feldman Prizes in Fiction and the Kim Ann Arstark memorial Award in poetry.