Solving Problems with Purpose

Who Prospects Actually Hire

HappiHacking is not a faceless consultancy. Clients come here because they want direct access to the judgment, architecture experience, and delivery discipline behind the company.

Erik is the principal consultant and the main reason the firm wins serious consulting work. Anna leads consulting delivery and helps turn technical strategy into a concrete, moving engagement.

Happi working as a scalable fintech backend consultant
Erik Stenman

Founder & Principal Consultant

Erik Stenman

Former Klarna CTO. PhD in Computer Science. BEAM specialist. Author of The BEAM Book. Erik is the person clients are buying access to when they bring HappiHacking into a high-stakes architecture or scaling problem.

  • Built Klarna’s engineering organization from 1 to about 80 people during hypergrowth.
  • Led payment-system architecture and 24/7 operational scaling under real production pressure.
  • Advises fintech and infrastructure teams on architecture, runtime behavior, and leadership.
Anna Attefall

Head of Consulting

Anna Attefall

Anna makes sure consulting work becomes a project that moves. She brings technical education, startup leadership experience, and pragmatic project management to the client relationship.

  • Master of Science in Computer Science from Uppsala University.
  • Background as team leader, project manager, and startup CEO.
  • Broad experience from IT, Swedish and Nordic healthcare, and medtech.

Why Teams Hire HappiHacking

Senior judgment

You get people who have already handled regulated payments, IoT at telecom scale, blockchain infrastructure, and early-stage team building.

Direct access

The people on this page are not decorative leadership. They are part of the work clients evaluate and buy.

Strategy with delivery

Architecture decisions, project framing, and team execution stay connected instead of splitting into separate advisory and implementation tracks.

Proven outcomes

From Klarna and Deutsche Telekom to Laya and Sika Health, the case studies show work that held up under real pressure.

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Ready to Scale Your Fintech Backend?

Let's discuss how we can help your compliance team sleep at night.

Accelerate your project by giving us a call today!

Happi Hacking AB
KIVRA: 556912-2707
106 31 Stockholm

+46735047442

info@happihacking.se

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