Sebastian Siemiatkowski is a Polish entrepreneur who is the co-founder and Chief Executive Officer (CEO) of Klarna. Recently, the CEO of Klarna has been making headlines. Klarna, a global payments and shopping service provider launched its AI assistant powered by OpenAI, eliminating the need for human customer service providers.
Siemiatkowski boasted about Klarna’s AI assistant, which can do the work of over 700 people. Taking to social media platform X, he tweeted that it is “a breakthrough in practical application of AI,” and in “its first 4 weeks handled 2.3 m customer service chats.”
The statement comes two years after the company laid off 700 employees in 2022. Hence, the internet was quick to point out the irony of Siemiatkowski praising the AI assistant for replacing the same number of jobs it eliminated. Amid rising concerns over the impact of automation on employment rates, Klarna assured that the company’s new AI chatbot had “nothing to do with” the job cuts it planned for 2022.
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Sebastian Siemiatkowski Net Worth
Sebastian SIemiatkowski’s net worth is $3.2 billion. According to Forbes, he owns approximately 7% of Klarna. Investors reduced the company’s earlier valuation of $45.6 billion to $6.7 billion in July 2022. The company went through a devaluation of about 85%.

Education
Sebastian SIemiatkowski was born in 1981 in Uppsala. He went to the Stockholm School of Economics. He has a bachelor’s and a master’s degree in Economics from the university.
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Career
According to Forbes, Sebastian SIemiatkowski flipped burgers at a Burger King joint in Sweden. He met one of his business partners there. In 2005, Sebastian Siemiatkowski, Niklas Adalberth, and Victor Jacobsson founded Klarna. They participated in the Stockholm School of Economics annual entrepreneurship competition, and with the help of angel investor Jane Walerud, their startup took off.
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Klarna is a buy now, pay later company that provides online payment solutions for consumers and merchants. In 2021, the company processed around $80 billion in internet sales. As of 2011, Klarna handled around 40% of all e-commerce sales in Sweden. Ten years later, it was Europe’s most valued private tech company, with a valuation of $45.6 billion. However, in 2022, its valuation was reduced to $6.7 billion due to a lack of outside investment.
Sebastian SIemiatkowski is the current CEO of Klarna. Aside from this, he served as an Advisory Board Member of the SSE Business Lab, in Sweden.
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Latest Update
Klarna’s AI assistant, powered by OpenAI, has been live globally for a month and boasts impressive results. It handled two-thirds of all customer service chats, equivalent to the work of 700 agents while maintaining high customer satisfaction.

According to the official press release by Klarna, the AI even surpasses human agents in efficiency, resolving errands 25% faster (now under 2 minutes compared to the previous 11 minutes) and requiring fewer repeat inquiries. This multilingual assistant, available 24/7 in 23 markets and more than 35 languages, is estimated to contribute a significant $40 million USD profit improvement to Klarna in 2024.
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Frequently Asked Questions
Sebastian SIemiatkowski is the current CEO of Klarna. The company was founded in 2005 by Siemiatkowski, Niklas Adalberth, and Victor Jacobsson.
Sebastian Siemiatkowski owns 7% of Klarna. He is the co-founder and CEO of the company.
In 2021, Klarna was Europe’s most valued private tech company, with a valuation of $45.6 billion. However, in 2022, its valuation was reduced to $6.7 billion due to a lack of outside investment.