Experienced operators, now working alongside you.
Senior operators, not slide decks. Each Principal amplified by AI, and paid on the outcomes they deliver.
Most consulting sells you seniority and delivers you juniors.
You buy the name on the door and get the junior team behind it: analysts learning on your problem, advice that arrives as a deck and leaves as a PDF, billed by the hour whether it changed anything or not.
There is a better way to buy senior expertise.
A new delivery model for the $100bn consulting industry.
Principal-owned, judgement-led, amplified by AI rather than replaced by it.
It combines the credibility of an international firm, the freedom of independence, and the AI-powered infrastructure to help experienced leaders build practices around their judgement - not around selling their time.
For the businesses that bring us in, that means the seniority you actually pay for: an operator who has already carried the decision you are facing, backed by the firepower of a firm, and measured on the outcome rather than the hours.
The highest practitioner designation in professional services - the individual who carries ultimate responsibility for client outcomes, holds the most complex relationships, and exercises judgement that cannot be delegated.
They do not manage processes. They shape decisions, lead organisations through consequential change, and take accountability for results that matter.
In The Principals Group, it is not a title we award. It is the standard we require.
What you get when you work with a Principal
How we do it is best shown, not explained.
The infrastructure behind a Principal, how the work actually gets delivered, is the part we would rather demonstrate than describe. The way to understand what one can do inside your business is to talk to one.
Trust begins with people.
Consultant-led organisations are built on trust. Before you evaluate the opportunity, you should know who is behind it. TPG is built by people who have spent decades building international professional networks.
Arnd founded The Principals Group after eighteen years building and scaling ERA Group’s global consultancy network. He has spent more than twenty years as an entrepreneur and senior executive in the consulting industry, and is the author of “Your Second Curve”, publishing September 2026.
Daniel is the founder and former CEO of Zeotap, a global data technology company. At TPG he leads technology and AI, building the AI-native infrastructure layer behind Principal delivery and client engagement.
James has spent decades building global professional networks, playing an instrumental role in growing BNI worldwide. At TPG he leads network growth and international development.
Klaus was Global COO of ERA Group, following an extensive entrepreneurial and consulting career of his own. At TPG he leads operations, finance and governance.
Lucy leads TPG’s marketing with The Scale Up Collective, bringing specialist B2B sales and marketing expertise to TPG’s Principals.
Ronny leads TPG’s web design and development, bringing specialist UI and front-end expertise to the network’s digital presence.
Your Second Curve
How Senior Executives Build Independence, Income and Equity After Corporate Life, by founder Dr. Arnd Halbach, is published in September 2026.
It sets out the thinking The Principals Group is built on.
Because the second curve climbs higher than the first.
Let’s talk about what you’re facing.
A conversation with a Principal costs you 30 minutes and leaves you with a clearer read on your problem. No deck, no pitch, no obligation.