About - Senior expertise. Direct delivery.
A boutique consultancy based in New York. We design, build, and operate AI, data, and automation systems for modern businesses — and lead financial operations as fractional CFO for growing companies.
Tacit Tech operates on a single conviction: that for many businesses, the right work is done not by a 200-person consultancy running playbooks, but by a senior, accountable team that owns each engagement end-to-end — from design and build through integration and, where appropriate, ongoing operation.
Engagements are senior-staffed and founder-led. Specialists are brought in per engagement on the basis of the work. Every system we deliver is built to be in use the day it is handed over — and we stand behind it.
Leadership

Jonathan R. Feilberg
Founder
Jonathan R. Feilberg leads Tacit Tech. Danish-born, New York-based, with a background spanning data engineering, business operations, and fractional financial leadership for growing companies.
Each engagement is staffed for the work. Specialists across Salesforce, accounting, machine learning, and adjacent disciplines are brought in as the engagement requires.
Tacit Tech is operated by Riemann Group LLC.
From the notes
Writing on the systems we build, the patterns we see across engagements, and what we’re learning putting AI to work in operations.
Tell us about your project.
Short conversation, clear next step, honest assessment of fit.