Vilhelm Martinsson
WEB APPLICATIONS
www.vilhelmmartinsson.comWeb applications for the AI era
We've entered a new stage of digital transformation - one where AI is no longer optional. LLMs and generative AI are reshaping how businesses build, communicate, and grow.
A modern web agency should do more than build websites. It should help you integrate AI, unlock automation, and design digital systems that keep you ahead.
温故知新
(おんこちしん)
"Learn from the past to create the new"
- Confucius, Chinese philosopher (551-479 BCE)
About
My name is Vilhelm Martinsson and I'm a full-stack web developer based in Karlstad, Sweden, currently expanding my expertise into AI engineering. I specialize in building responsive and user-friendly web applications for small and medium-sized businesses, with an increasing focus on integrating AI capabilities. Through our network of partners, we can offer various digital services.
Please contact me if you want to know more!
Services
Frontend Development
Modern interfaces
- Vue.js / Nuxt.js apps
- Responsive design
- Interactive UI/UX
- Progressive Web Apps
Backend Development
Scalable architectures
- Python / Django apps
- RESTful APIs
- Database design
- Cloud deployment
AI Engineering
Intelligent systems
- LLM integration
- Prompt engineering
- LangChain flows
- Semantic search
Blog
A place to scribble down my thoughts and ideas, while diving deeper into subjects that spark my curiosity. It will be a mix of personal and professional notes on a wide range of topics.
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Technologies
I work primarily with technologies such as Python, Django, Flask, Django-Rest, Django-Channels, Websockets, Javascript (ES6+, Node, Vue.js, Nuxt.js), PostgreSQL, HTML5, CSS3, SQL, JSON, Git/Github, Heroku, Digital Ocean (Droplets and App Platform), Stripe, Mailgun, Nginx, Gunicorn, Linux (Ubuntu), OpenAI, Claude, AI model integrations, Cursor etc.
Customers



is a soaring exercise
of the human imagination.
Reviews
"Vilhelm has been helping us develop a custom content management system using Django, Django REST, Celery, and third-party APIs. It allows us to manage multiple sites, schedule articles, and generate images with ease. The ongoing, iterative approach has been smooth, and we're very pleased with the result."
- Anders Gärme, Webbstream"Vilhelm developed our MVP for a live, local quiz competition, covering both front and back end, and enabling players to compete for cash prizes with Swish payments. The development process has been efficient, and the final product meets our needs perfectly."
- Andreas Asplund, Grannkampen"Vilhelm has helped us with everything from requirements, design, development and implementation of our web application. The collaboration has been very good from start to finish and the project was delivered according to plan!"
- Linus Lindeborg, Hälsoförmedlingen