Technology leadership · Hamburg

I lead
long-horizon
renewal.

I stabilise teams and steadily improve the technology, product, and ways of working that support a worthwhile product.

Now
CTO & Managing Director
esome advertising technologies
Focus
Technology-enabled B2B and service environments

Change that lasts

I do my best work where a capable team and a worthwhile product have accumulated complexity: legacy systems, unclear ownership, tired structures, or decisions that no longer add up. I help create stability first, then build the momentum to improve things without stopping the business.

That work is deliberately incremental. It includes technical modernisation and product decisions, but it also means designing team structures, making ownership clearer, and paying close attention to what motivates the people doing the work.

The clearest sign that change is taking hold is when progress no longer waits for a programme or an instruction from management. People understand the purpose, see what is needed, and act.

Patterns of work

These are the recurring situations where I can make a useful difference.

01

Context creates ownership

When I took responsibility for two remote teams, they were treated as coding capacity and had little ownership. I explained the business logic behind their work, connected them with other units, established regular exchange, and moved product management to the remote location. The teams began to recognise development opportunities themselves and prioritise them directly with the colleagues who needed the new features.

Outcome
Ownership became local

02

Modernise without stopping

A release process built around cherry-picking in SVN produced a deployment roughly every three weeks. We moved to Git and GitLab, introduced static code analysis and automated acceptance tests, and made small changes safer to release. Deployment frequency rose to dozens a day—without stopping the product while we modernised it.

Outcome
3 weeks to dozens per day

03

Bring engineering close to the work

I introduced embedded engineers so technical capability sat directly alongside the teams doing the work. Working with users, and supported by AI coding agents, they built an agent for advertising campaign work around real operational needs. Within three months, it was reducing manual work and errors while increasing efficiency—without becoming a separate transformation programme.

Outcome
Less manual work, fewer errors

04

Structure around purpose

In an organisation where hierarchy obscured purpose, I introduced value streams, aligned teams around them, and set clear goals for the work. We removed hierarchy from the way delivery was organised, giving teams clearer ownership and a stronger connection to the value they created. For some teams, the economic success of their work tripled.

Outcome
Up to 3× economic success

Career milestones

1997–2002
Studied computer science at the University of Hamburg.
2015
Joined esome advertising technologies as CTO.
2021
Became Managing Director at esome advertising technologies.

For the full picture, including earlier roles and recommendations, visit my LinkedIn profile.

Stefan Wiegreffe

Worthwhile work deserves patient change.

I am selectively open to thoughtful conversations about leadership opportunities where this kind of long-term renewal can make a difference. If that sounds familiar, I would be glad to hear from you.

Email Stefan Find me on LinkedIn