Freelance Data Visualization Developer
I specialize in building custom, interactive visualizations that help agencies and organizations communicate data with clarity and impact.
Kristin Baumann
Quick facts about me
Over 10 years experience
I started coding with web technologies and data visualization (e.g. D3.js, React) back in 2015.
English & German
I am based in Berlin, Germany (CET timezone) and collaborate with agencies and organizations worldwide in English and German.
Visual Computing
I studied Visual Computing at a German university—combining computer science, maths, and graphics with design and psychology.
Why work with me
Reliable expertise for your projects
Drawing on my experience, dependability, and expertise in both design and development, I make collaboration smooth, efficient, and oriented toward impactful outcomes:
Using JavaScript, I build interactive solutions tailored specifically to your data and project goals.
I work directly with Figma as the design tool to create rough concepts as well as detailed designs and then translate them into clean, efficient code.
I can plug into your team where needed, end-to-end or just for specific steps.
If a custom visualization isn't the right approach for your problem, I'll tell you and suggest the best alternative.
You'll always know what I'm working on, why it matters, when the next deliverable will arrive, and how it fits into the bigger picture.
I go beyond coding to consider the full project context, ensuring all pieces work together smoothly and flagging potential issues as early as possible.
As a freelancer, former employee, and former employer, I know the common pitfalls and challenges of delivering complex projects and how to navigate them efficiently.
My technical skills
In love with JavaScript and data
I build bespoke, web-based charts and interactive visualizations using the languages and technologies of the web. Each project has its own requirements, which often calls for different tech stack combinations. I also handle integration with your existing tech stack—whatever that might be, whether a JavaScript framework, Webflow, WordPress, Ruby on Rails, or others—so the visualizations fit seamlessly into your current workflow.
The coding languages, technologies and tools that I regularly use in my projects:
Core Visualization & Interactive UI
Web Development & Frontend
Data Handling
Backend & Databases
Design & Prototyping & Workflow
I don't work with Tableau, PowerBI and similar data viz software.
I specialize in creating fully custom, interactive charts that go beyond the limitations of pre-defined visualization tools. Because of this focus on bespoke, code-driven solutions, I do not offer services for building visualizations in platforms like Tableau, Power BI, or similar out-of-the-box tools. My work is aimed at projects that require the flexibility and creativity only possible with custom web development.
Trusted by agencies and organizations including
Ready to collaborate?
Let’s bring your data to life with interactive visualizations.