Breaking Through Digital and Technology Growth Barriers: Introducing Delta Squared

📌 This article was originally published on Consultancy.nl. The version below has been adapted for an international audience.

Every successful organisation eventually hits a growth ceiling. Sometimes it's a lack of structure: priorities blur, management gets consumed by operational firefighting, and strategic momentum stalls. Other times it's the opposite: processes become too rigid, decision-making slows, and the organisation turns inward. Either way, the result is familiar: projects drag on, ROI fails to materialise, and competitive advantage erodes.

Delta Squared was founded on a clear observation: a large share of successful mid-market organisations (150+ FTE) consistently struggle to make technology and digital transformation work for them. Too often, digital and technology are experienced as a cost centre, something to be managed and contained, rather than what they should be: the driving force behind innovation and competitive strength. The irony is that the complexity of change is precisely what makes this so hard to solve. Implementation touches existing processes, organisational structure, budget, and business strategy all at once.

“There is a genuine need among entrepreneurs, management teams, and private equity for a partner who can oversee complex digital and technology transformations, and actually deliver results”

"There is a genuine need among entrepreneurs, management teams, and private equity for a partner who can oversee complex digital and technology transformations, and actually deliver results," says co-founder Thijs Wesselink. "Not a firm that produces advice and hides behind frameworks, but one that executes."

The founders

Delta Squared was founded by Alexandros Tzortzopoulos and Thijs Wesselink, who bring complementary and directly relevant experience to the firm.

Tzortzopoulos most recently served as Global Director of Technology at ACT Commodities, an Amsterdam-based commodities trading house specialising in emissions trading. Before that, he led the IT division at derivatives trading firm All Options and held technology roles at insurer NN Group. Across these organisations, he saw the same pattern repeat: companies could roll out technology, but struggled to embed it durably into how they actually worked.

Wesselink started his career at First Consulting, joining as one of its first fifty employees and watching it grow into an international group of 1,700 people, now operating as Valcon. He later held senior roles at Xebia, an international technology consultancy, where as General Manager he led complex digital transformations for mid-market companies and scale-ups across Europe.

Both founders are deeply familiar with the high-stakes, fast-moving environments of private equity, buy-and-build, and growth financing, and bring that lens to every engagement.

Impact over effort

Delta Squared operates under a clear mantra: judged on impact, not effort.

"We are explicitly not a consultancy built on giving advice and fixating on frameworks," says Wesselink. "In our model, a consultant is responsible for execution and results, not just the recommendation, but the implementation itself. We deploy experienced interim professionals and consultants who combine a hands-on approach with strategic breadth and a track record that speaks for itself."

That approach comes with a commitment to independence. "We position ourselves independently, challenge assumptions, and are not afraid to put difficult choices on the table in plain language," Wesselink adds. "Always with one guiding principle: leave the client in a better position than we found them.

“We leave the client in a better position than we found them. ”

We deliver results together with the client, and we make sure they can sustain those results on their own long after we're gone."