user avatar
Sebastian Siemiatkowski
Klarna
@klarnaseb
Co-founder & CEO @Klarna. Building the world's most consumer-obsessed bank, 100M+ active customers, soon 1M+ merchants, smarter credit, lower cost.
klarna.com
Joined April 2011
431
Following
48.3K
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Posts
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Feb 8, 2025
    Ok. I give up. Klarna and me will embrace crypto! More to come Yes I know! This post will get a huge sigh and 2 views 😂 But it still feels historic. Last large fintech in the world to embrace it. Someone had to be last. And that’s a milestone as well of some sort… 🥳
    1.2M
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Jan 25, 2025
    NOTE: Using OpenAi Operator at your bank in EU is illegal by law! Web access for assistants was banned years ago as part of “Open banking” Here is the story of why: 15 years ago I stumbled into Sofort in Germany. A company with the idea to build a digital assistant that would
    1.5M
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Feb 27, 2024
    This is a breakthrough in practical application of AI! Klarnas AI assistant, powered by @OpenAI, has in its first 4 weeks handled 2.3 m customer service chats and the data and insights are staggering: - Handles 2/3 rd of our customer service enquires - On par with humans on
    972K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Aug 11, 2021
    I am grateful to Sweden for the opportunities and support it gave me; an immigrant kid and us as a company! I believe in particular Göran Persson had the vision and laid the ground for Swedens current prosperity How Sweden became Silicon Valley of Europe
    Klarna CEO Sebastian Siemiatkowski in the company's office in Stockholm, Sweden, August 25, 2020. Picture taken August 25, 2020. REUTERS/Supantha Mukherjee/File Photo
    Focus: How Sweden became the Silicon Valley of Europe
    From reuters.com
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Mar 3, 2025
    Yes, we did shut down Salesforce a year ago, as we have many SaaS providers—an internal estimate is about 1,200 SaaS shut down. No, I don't think it is the end of Salesforce; might be the opposite. Here is what actually happened and how/why we originally intended to NOT share
    331K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Jun 29, 2023
    My schedule can be shuffled for a chat if you want to @John_W_Henry @LFC 😉
    user avatar
    Klarna
    @Klarna
    Jun 29, 2023
    Replying to @David_Ornstein and @TheAthleticFC
    .@John_W_Henry you know you can just DM us, right?
    549K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Apr 11, 2025
    Dear EU officials I am co-founder of Klarna one of Europes largest fintech companies. @vonderleyen Please read this about open banking regulation how it needs to be reformed to bring value and innovation. Happy to speak whenever EU ent. help me spread this so she sees it!
    user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Jan 25, 2025
    NOTE: Using OpenAi Operator at your bank in EU is illegal by law! Web access for assistants was banned years ago as part of “Open banking” Here is the story of why: 15 years ago I stumbled into Sofort in Germany. A company with the idea to build a digital assistant that would
    128K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Oct 27, 2025
    Oberoende om man älskar eller hatar Milei kan detta kanske bli väckarklockan för svensk politik? Man kan vinna val, tom bli belönad av väljarna: om man faktiskt gör vad man tror är rätt snarare än vad man tror är "populärt" och inte tror att medias bild = folkets åsikt
    68K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Jul 11, 2022
    Today Klarna announces an $800m financing round during the worst stock downturn and challenging macro in decades. We are not immune to public peers being down 75-90% and hence our valuation is down on par. Here are some facts that the media might omit in reporting on this 🧵 👇
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Mar 4, 2025
    Yes, we did shut down Salesforce a year ago, as we have many SaaS providers—an internal estimate is about 1,200 SaaS shut down. Not the end of Salesforce; might be the opposite. Here is what actually happened and how/why we originally intended to NOT share it publicly:
    342K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Aug 8, 2025
    Är det ngn som har tittat närmare på Lyten batteries, som köpt Northvolt? Innan vi slänger mer skatte och pensionspengar… Ser det inte märkligt ut med märkliga LinkedIn profiler, okända namn, inga kända investerare Ngn journalist som vill gräva? Hoppas jag har fel så klart!
    178K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Feb 8, 2025
    Replying to @klarnaseb
    Btw all crypto fans. Tell me what we should do with it? We have 85 m users worldwide. 100 bn of volume. Over 0.5 m merchants. About 30% of volume is debit not credit. Over 1 million cards. I have some ideas but keen to hear more!
    128K
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Apr 20, 2022
    Google, Apple and Microsoft can stop the war in Ukraine Shut down iOS, Android and Windows for all Russians, this would put the country to a halt and most importantly its military. All phones and computers in Russia would stop working Retweet if you support! Support 🇺🇦 Ukraine
  • user avatar
    Sebastian Siemiatkowski
    Klarna
    @klarnaseb
    Aug 19, 2025
    Sorry Jira, Bitbucket and Atlassian you are going out... I really like the founders of Atlassian, good guys, so I want to be mindful here but the software, not so much. After being able to leave Salesforce and a number of SaaS, let me share:
    201K