Technology consulting & development · New York City
Mattermind is technology consulting from the people who actually build and run the software. Twenty years of it, at every scale from the corner shop to platforms serving millions. We help you make the right call first, and we build it when building is the answer.
The fastest way to waste a year is to buy a rigid system and then rebuild your company to fit it. We start from the other end. We learn how your business actually runs, we tell you honestly which problems need new technology and which ones just need a better decision, and when something truly needs building, we build it around you.
What we do —
A powerful ally in your corner before a line of code is written. We learn how your business runs, then tell you what genuinely needs new technology, what just needs a better decision, and how to get there without burying your team in new process. Research and recommendations, documentation, QA, or a fractional technology lead who has actually shipped at scale.
When building is the answer, we build from scratch and run it for the long haul. Business-management platforms, CRMs, scheduling, payments, e-learning — all fitted to how you actually work. They live on .NET in our own secure, load-balanced corner of the cloud, with security in the foundation rather than bolted on at the end. Over the last twelve months those platforms posted a true 100% uptime most months; the few 99.99% months are simply where scheduled maintenance landed.
Fast, clean, secure websites built on Phosis, the platform we built and use for our own sites and our clients'. Eight and counting sit at the top of Google in their categories, with no SEO plugins and no growth-hacking séances, because they are fast and clean by architecture. This is craft for people who know a great site pays for itself. It isn't template-shop work, and it isn't priced like it.
"The Mattermind team combines technical expertise with a genuine commitment to solving real business challenges. They take the time to understand objectives, communicate clearly throughout the process, and deliver solutions that create measurable value. Their ability to blend innovation with practical execution makes them an outstanding technology partner."
Every site we create runs on Phosis, the content platform we built from the ground up: our client work, yes, but our own website, our own studio work, our sibling company's upcoming expo, our founder's holiday-entertainment company and his artist website — all of it. We trust Phosis enough to stake our own ventures on it, and the numbers have earned that trust.
It's quietly excellent, and it's growing into a product of its own. Meet Phosis →
We built the custom operations platform and CRM behind their national senior-living referral business. Leads & clients, property database, invoicing, reporting, API, file manager, and much more. The platform helped grow the company's value before their 2022 acquisition.
We built the entire platform behind the largest vocal studio in NYC: complete end-to-end business management, virtual & in-person scheduling, payments, a custom forum, mobile app, and a complete e-learning system built from scratch. Their family of sites, from Voice Teacher Training to New York Acting Coaching, all rank high on Google, with many #1.
Category-leading sites and tools for coaches and communicators whose clients include executives at Google, Apple, and Citi.
"Everything we've needed, wanted, or imagined has been made available to us."
Pedigree —
Mattermind is a boutique New York technology shop, founded and led by Greg Kefalas, a developer since 1996. For most of the last twenty years, the person architecting your system has been the same person writing the code and answering your emails. That meant being the builder behind platforms that Madonna's store, U2's first 360° tour, Live Nation, IMVU, Billboard, and DMX all relied on, plus branded stores for Pepsi, Delta, and McDonald's. Today it means building the software a handful of companies run their days on, and helping many more decide what to build in the first place. We keep the team small on purpose. It's how the work stays this focused.
If you've got a technology decision you'd rather not make alone, or a system that fights your team instead of helping it, we should talk.
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