"John a) is real smart, b) has a diverse background and c) is a really interesting, personable, and just plain fun guy to work with."

Bob Kieffer, Cofounder, Alodar Systems

"I can't give [Mr. Tangney] a high enough recommendation. He's effective, efficient, stays on top of the latest developments, has high principles for good design, works well with others. I'd hire him again in a minute."

Clark Quinn, Founder, OtterSurf Labs

"From start to finish, [...] John's experience, adaptability, professionalism, and commitment to our project earned both the respect and gratitude of everyone on the project. His depth of understanding for the usability issues of our product received particularly high marks. A project manager can save money and time by hiring the right person - John fits this metric very well."

Brian Drummond, Director of Engineering, Project Achieve

"John was able to fix a recurring bug in our script that had plagued our donation system for months, and he did it quickly, efficiently, and with a great deal of expertise. I would recommend John to anyone looking for excellent programming skills."

Janine Kubert, Director of Creative Services, United Way of the Bay Area

"[Mr. Tangney] obviously get[s] it."

Ward Cunningham, on the occasion of Mr. Tangney's signing of the Agile Manifesto.

"I was highly impressed with both the quality and quantity of John's work; he delivered tremendous results in everything asked of him. Moreover, I very much enjoyed working with him, as he exhibits a high degree of professionalism, has an enthusiastic, pro-active disposition, and is a succinct communicator."

Kent Sorsky, QA Manager, AvantGo

"I can’t tell you how pleased and amazed I am at where the product is. I am barely holding myself back from sending out [logins] to all the people that have expressed interest in what we’re doing. This project opened my eyes to XP - my initial reaction was "that doesn't really apply to us, this isn't a 'time to market' situation that requires dual programmers." But, of course, I learned there is much more to the XP theology than that, and much of it does apply, no matter what size project."

Bill Davidson, CEO, PeerView.

"The projects John contributed to were challenging both from the functional and technical standpoints. They were also involving significant feasibility and schedule risks. John was instrumental on these projects; he was extremely quick in getting ramped-up on our technical environment and domain space, and made outstanding contributions at the design and programming level. He came up with innovative solutions and volunteered numerous times to take on difficult tasks. John also has a very positive personality which helps keep the Team's morale up during stressful and challenging times. John was a key asset on these projects to get things done right and in time."

David Tobiano, Director of Engineering, Primavera