Hi, I’m Karl. I work at the intersection of AppSec and AI for the benefit of humans and our planet.

I’m a 23 year old studying my last year of computer engineering at Lund University (LTH), specializing in networks and security. I’ve spent seven years building production web apps through my own firm, Kolifink, which taught me how real systems break in practice. Currently, I research on how novel ML innovations can be used by aid organizations as part of my ongoing work at Lund AI Society. I’ve also:

Interned at Neo4j as a software engineer during the summer of ’26
Worked as a cybersecurity analyst at Truesec during the summer of 24′ and 25′
Built and operating UV-Kollen, Sweden’s most used UV-index forecasting service
Co-founded Partikular, Sweden’s largest youth STEM magazine, later became president, later became CTO
T.A.’d in Concurrent programming, Java programming, Scala programming, and The Business of Software at the department of Computer Science at LTH.

Volunteer work

Board member of Digital Ungdom for 3 years
Volunteer at Datatjej’s learn to program workshop for kids
IT foreman at Helsingkrona Nation 2024-2025
Worked as a volunteer for the Red Cross Helsingborg summer of 19′

Hackathons

National Buildathon 2026 (by Antler x Amazon Web Services), won 3rd place!
AI Hackathon #2 (by Florent Venture Partners x Lund AI Society) 2026, won 1st place!
AI Hackathon (by Light x Lovable x Voyado x Lund AI Society) 2026, won 1st place!
HackEurope 2026
Fixathon (by Norrsken x Spotify x Lovable) 2025
Fixa Krisen 2020 (by Förebildarna), won 2nd place!
Hack The Crisis 2020 (by the Swedish Government and the agency for digital government), won 3rd place in our category!

My favourite DJ sets right now

Field Notes from the Shoulder

Kolifink: my sole proprietorship specialized in secure web development

February 5, 2025

Back in 2021, when studying at my upper secondary school, I wanted to take my web development hobby to a new level. I started to get bored of the courses in school, and felt that I easily could transfer my hobby to a decent salary. In those early days, armed with nothing more than a…
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UV-Kollen: Swedish real-time UV-index and forecast service

February 4, 2025

In the early months of 2023, I noticed that the weather service hosted by the Swedish Meteorological and Hydrological Institute (SMHI) underwent a significant change. SMHI decided to dismantle the UV-index forecast service, and instead began to refer to an incomplete web application that the Radiation Safety Authority (Strålsäkerhetsmyndigheten) offers. Since the service was discontinued,…
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Rädda Hjärtat concept: Improving UX for CPR and first-aid app

February 4, 2025

In the process of creating UI/UX designs, one of thinks that the pure aesthetic of the design is all there is. But thinking about the usability and accessibility of the design is just as important, and in this case, so important that it could save lives. As part of the course EXTA65 Kognition I redesigned…
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OAuthOrNot: Building a pentest environment for OAuth 2.0 authentication

February 4, 2025

OAuthOrNot is a deliberately vulnerable web‑application sandbox that mimics a real‑world admin portal. Built with modern frameworks (Next.js + NextAuth) and powered by a simulated admin dashboard, the environment showcases how everyday OAuth 2.0 configurations can become attack vectors when they’re not locked down properly. Why I created OAuthOrNot OAuth has become the de‑facto standard for delegating authentication to…
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Using Android’s GPS and sensor permission to calculate the users height

February 4, 2025

Smartphones have become indispensable tools in modern life, used for communication, work, and even entertainment. The average person checks their phone around 150 times a day, often without even realizing it. Given the increasing sophistication of smartphone sensors, this project explores whether a smartphone can deduce a user’s height using data collected as they walk.…
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Optimize 4 the win: How JIT compilation affects the execution time of a Java program

February 4, 2025

Performance optimization in software development is an ongoing challenge, and one of the most powerful tools that makes Java performant is its Just-In-Time (JIT) compilation. Unlike traditional compilation techniques, JIT compiles code at runtime, improving execution speed dynamically. But how significant is the impact of JIT compilation on a Java programs performance? This study was…
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Used Cars & Unused Plans

Using Gmail & Google Sheets API to create a conference room booking bot

February 4, 2025

Have you ever found yourself really wanting to book a conference room at high school, only to discover that all rooms, even the worst ones, are already taken? I certainly have – and this problem itself is exactly what began my journey into automation. Tired of always losing the best rooms to those lightning-fast early…
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Building Procivitas student union website

February 4, 2025

I worked together with the Student Union board to create a new way for students at Procivitas Helsingborg to interact with the student union, its upcoming events, and their membership. The website was built using WordPress as CMS, where I developed a custom theme for Elevkåren to better match their color palette and overall aesthetic.
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Partikular: Founding Swedens biggest youth STEM magazine

February 4, 2025

Partikular offers a weekly publication of unique popular‑science articles written by students for students. We write about topics such as psychology, mathematics, particle physics, artificial intelligence, the brain, and many more. The primary purpose of the magazine is to demonstrate that natural science is not as one‑dimensional and complicated as many people think; through our…
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GeBlod concept for HackTheCrisis: Sustainable blood donation during the COVID19 crisis

February 4, 2025

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The Almanac

Saying for the road

“A page that loads is worth two that buffer.”

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