Skip to main content
Back to

Klemens Hjartar

Senior Partner, Copenhagen
Leads digital and advanced-analytics performance based transformations, building agile capabilities at scale in large organizations in both B2C and B2B environments

About Klemens

Klemens is the global leader of McKinsey Digital in the telecommunications, media, and technology sectors and in Western Europe.

An experienced transformation leader, Klemens has created performance-based partnerships with the leaders of prominent companies to lead digital transformations. The aim is significant shift in capabilities, commercial performance, and operational cost.

Klemens brings expertise in technology modernization, dealing with legacy IT architectures, and putting in place agile organizations.

Examples of his recent work include the following:

  • driving a multiyear agile-at-scale digital transformation for a leading telco, creating an organization focused on customer satisfaction, revenue, and operational cost
  • leading a major digital transformation for a large financial institution, using digital customer-journey transformation to build agile capabilities at scale in a multicountry setup
  • supporting several end-to-end customer-experience transformations and multichannel loyalty programs in telecoms
  • managing the turnaround of a global advanced-industries company, resulting in a 30 percent fixed cost reduction, direct product cost analysis, performance management, and major cash-flow improvements
  • leading a multiyear transformation for a large telecommunications company in Europe, creating a top performer in the industry and a total-returns-to-shareholders champion
  • developing a strategy for an innovative mobile company in Eastern Europe, helping it take significant market share
  • designing a major cost and transformation program for a multicountry financial institution, leveraging its focus toward a “one platform” organization and resulting in the bank being recognized as a leader in consolidating operations and IT platforms across countries

Published work

The CIO’s moment: Leadership through the first wave of the coronavirus crisis,” McKinsey & Company, March 2020

The CEO’s new technology agenda,” McKinsey & Company, November 2019

‘Tech for Good’: Using technology to smooth disruption and improve well-being,” McKinsey Global Institute, May 2019

A tale of two agile paths: How a pair of operators set up their organizational transformations,” McKinsey & Company, February 2019

Danish Manufacturing—winning in the next decade, McKinsey & Company, January 2016

Past experience

Price Waterhouse Coopers


Aalborg University
MSc, industrial engineering