Doug was a key member of Tierra’s software development team as we tackled a wide range of challenging technical projects - from a virtual reality gaming website, to a collaborative classroom teaching tool for an education nonprofit, to developing a complex CMS and bringing online a huge archive for a publishing client. His ability to analyze problems, suggest solutions, and get things done was an important component to my company’s development as we expanded. Always upbeat, self-directed, communicative, and friendly, Doug was a great asset to my team.
- Jamie Trowbridge, Tierra Innovation

A 2013 Kickstarter brought us nearly 5,400 new customers with only e-mail addresses and invoice totals — no SKU counts, no shipping addresses, no mechanism for managing individual customer service issues. Doug assessed our needs, prepared a proposal and developed Fundafull to cover everything we needed. He executed on time and on budget, and provided flawless support throughout. (We also Fundafull for our second Kickstarter in 2014.) Doug deserves our highest recommendation.
- Stefan Pokorny, Dwarven Forge, LLC

Doug Martin did excellent work on a math software project for young children, MathemAntics, that we designed at Teachers College, Columbia University. He was always enormously helpful, flexible, and creative. MathemAntics benefited greatly from his contributions.
- Dr. Herb Ginsburg, Teachers College, Columbia University

Doug took a prototype of some early math software developed by my company, Educational Network Services, and built it into a powerful and flexible teaching tool for education researchers from Columbia University's Teachers College. The environment included a user-friendly authoring interface that enabled non-programmers to create and customize learning activities for particular audiences and learning goals. Doug's ability to understand and appreciate the needs and constraints of the researchers resulted in a highly successful three-year partnership and contributed significantly to the success of the project. I recommend him wholeheartedly!
- Paul Horitwz, Educational Network Services

We brought Doug into a project 3/4 of the way through and asked him to clean up the mess we had with our off-shore developers. His ability to wade through unfamiliar code, identify the problems, create solutions, and not want to poke his eyes out was a life saver. Thank you, Doug! I would hire him again any time.
- Chris Macek, Relyon Solutions