Mikael is a prestigeless problem solver with more than 15 years of experience in the business. As an early employee at Klarna, he was part of the journey from a small startup to a global multibillion dollar company.


2023 - now Software Developer, Happi Hacking AB

Back-end development for a cross platform mobile game.

Technologies: Erlang, Postgres, Docker, Github, Git

2012 - 2021 Senior Developer, Klarna AB

Part of the core development team, responsible for Klarna's main back-end system. The team also handled deployment, release testing, and continuous integration.

Technologies: Erlang, LevelDB, Git, Jenkins, Bash, Python, Groovy, BitBucket, Jira, Linux

2010 - 2012 Cluster Manager, Klarna AB

Managed two developer teams. One team was responsible for Identification. Identifying recurring customers and confirming their identities. Built Klarna's fraud detection scoring system. The other team developed the dunning chain for Klarna invoices.

Technologies: Erlang, Yaws, JavaScript, HTML

2008 - 2010 Software Developer, Klarna AB

Integrations towards credit score providers. Created a reporting system for estores connected to Klarna.

Technologies: Erlang, SOAP, XML

2006 - 2008 Software Developer/Technical Consultant, Klarna AB

Developed XMLRPC API:s (PHP, ASP, ASP.NET, Java, Perl) along with the corresponding Erlang parts on the server side. Helped E-stores integrate the API:s to communicate with Klarna.

Technologies: Erlang, PHP, ASP, ASP.NET, Java, Perl


2001 - 2006 MSc Computer Science, Karlstad University