Hi. I'm Dejan (Day-ahn), a product manager with a design background based in Berlin. I'm currently working as a Senior Product Manager at Klarna, focusing on enhancing the post-purchase experience within the Klarna app. Before that, I worked at trivago as a designer-turned-product manager. I occasionally design for entrepreneurs and write articles.
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About Me

As a product manager with over 6 years of experience and 10 years in design, I've designed or helped to create digital experiences used by millions across web and mobile apps worldwide.

At Klarna and trivago, I've led teams that increased revenue, improved engagement, reduced costs, and enhanced user experience. I've worked through both pre- and post-IPO phases. My approach combines customer obsession, data-based confidence, and bias to action.

I earned my PhD in Defence Studies, focusing on information visualization in intelligence. I sometimes write about digital topics alongside academic papers. Random fact: I played clarinet for 18 years in a Slovenian wind orchestra!"

Contributions

Design

Martech Family Website

May 2025 ✨ Designed a new website for the online magazine about the marketing technology.

Scientific Article

Evaluation of Information Visualization in Digital Intelligence Product

Dec 2024 ✨ Published an article in the Journal of Strategic Security about my research results from PhD. It answers whether reading intelligence from visualization-powered digital products is more efficient and pleasant than reading text-based paper reports.

Product Management

Klarna on Apple Pay

Nov 2024 ✨ Drove implementation of the post-purchase experience for Apple Pay customers from the US, UK, and Canada.

Product Management

Klarna Financing for Apple products in the US

Oct 2024 ✨ Drove implementation of the post-purchase experience for a new financing method for Apple’s products when Klarna became an Apple Authorized Reseller store.

Product Management

New Payments Tab in the New Klarna App

Aug 2024 ✨ Drove the implementation of the Payments tab in the new Klarna App. Our team's focus was on revamping purchases, deliveries, and returns and refunds list for simpler and more intuitive management of transactions. The new App was nominated for the coveted Website of the Year 2024 award, in partnership with EMENCE.

Design

Handpicked Berlin Logo

Apr 2024 ✨ Designed the logo & identity for Berlin’s newsletter Handpicked.

Product Management

Purchases Tab in the Klarna App

Apr 2023 ✨ Drove the implementation of the Purchases tab in the Klarna App. We converged payments and purchases, including deliveries and returns, into a single place, making it easier for customers to find their latest transactions and features to manage them.

Product Management

Auto-Import Feature in the Klarna App

Aug 2022 ✨ Drove the implementation of the frontend experience for the Auto-import feature in the Klarna App.

Product Management

New Search & Filter Experience live on Trivago Mobile Web

Apr 2022 ✨ Revamped and rolled out the new trivago mobile Web experience, as an owner of the mobile Web topic at trivago.

Design

heycater! Landing Page

Sep 2021 ✨ Provided UX/UI design assets and A/B test suggestions for heycater! Berlin landing page.

Blog Post

Focus Session: Defining Design Requirements with Stakeholders

Jul 2019 ✨ Introduced a format for workshop with stakeholders to find together ideas and improvement suggestions.

Design

Lexted Corporate Identity & Web

Dec 2019 ✨ Designed the corporate identity and website for Lexted, a law firm in Slovenia.

Blog Post

Complete a PhD while working fulltime? Challenge accepted!

Nov 2019 ✨ Blog post written by the Life at trivago team, with whom I shared my personal experience of working full-time and completing a PhD at the same time.

Blog Post

Designing a Flexible Organism for the Hotel Search Website

Apr 2016 ✨ Shared a case study about the redesign of the hotel search result list on trivago’s website. Brad Frost reposted the case study.

Blog Post

Creating a Pixelated Overlay on Images — Responsive Website Showcase

Jun 2015 ✨ Described how to create a pixelated image effect.

Blog Post

5 Things You Should Focus on When Designing Graphs

Apr 2014 ✨ Highlighted and described key factors to consider when designing graphs for data visualization.

Blog Post

Using target=”_blank” for links is not outdated (anymore)

Dec 2013 ✨ Shared an opinion why I think we should be using _blank attribute for opening external links.

Scientific Article

Possibilities for Innovative Scientific Approach: Information Visualization and Experiment in Intelligence Research

Sep 2013 ✨ Published an article in Innovative Issues and Approaches in Social Sciences about using an experiment as a key research method in social sciences. Article relates to my PhD about the information visualization in intelligence.

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