Unique Data,
Interactive Visualizations
Your data is meant to be communicated.
Your technical setup doesn't have to get in the way.
As a freelance data visualization developer, I turn an organization's idea and raw data into a finished, interactive experience that gets its audience reading, clicking, acting.
Trusted by organizations and agencies including
























































































Why a data viz project is hard to do in-house
Your data is meant to be communicated
You have data, research, or a story that needs to reach a real public audience, not just sit in an internal document. Without expert help, these three problems usually show up:
No specialized skill in-house
Your team has no data viz specialist. So nobody can own such a project end to end, from raw data to finished piece.
Not just a pretty picture
Your goal is real: people need to read, click, act. A design that only looks good doesn't get you there.
Not sure what's possible
You haven't run enough data viz projects to see the full range of what's possible. So you don't know what actually fits for your audience, tech stack and data.

Featured projects
Custom charts I've built
What gets built
Your data, uniquely visualized
Your custom, web-based interactive data visualization can take on different forms and serve many purposes:
Standalone Interactive Visualization
Fit your data into a single interactive piece that works inside whatever site or tech stack you already have.
Interactive Web-Based Report
Combine several charts and interactions into one report, for a story too data-heavy for a single chart.
Data Storytelling Site
Lead your audience through your data, research and narrative in sequence, so the story carries as much weight as the chart.
Data Platform
Give your audience a tool to search, filter, and explore the data themselves through visualizations.
Data Art Piece
Balance design between scientific clarity and emotional impact, in a distinctive, conceptually driven piece built to be remembered.
How we can work together
One well-tested process, three ways to collaborate
Every project runs through the same five phases. You can decide how much of the process you want me to handle.
Exploration only
Not sure yet what's possible? I get you a full validated concept.
Complete project collaboration
I own the full process, from idea to launch.
Development only
Already have a concept and design? I code the rest for you.
About me
Your partner across code, design, data and storytelling
From concept to launch, I love working on the different aspects of a data viz project. That ranges from high-level strategic goal setting to an intense data deep dive, user-oriented design thinking, and careful, detail-focused coding.
I bring extensive project experience
40+ commissioned data visualization projects for agencies and organizations. I know the roadblocks that come up, and how to clear them.
I know how to work with your team
Before going freelance, I worked in and led design, data, marketing, and product teams.
Clients value my reliability and communication
"Reliable", "clear communication", "always on time": that's what happy clients write about me in their testimonials.

Kristin Baumann
Happy clients, happy life
“Kristin is everything you would want in a data visualization & frontend developer — her execution is excellent down to the last design details. Throughout our time collaborating on the OpenSecrets frontend web development project, she worked very efficiently, sharing clear and regular updates and problem solving creatively when code or UI challenges arose. She is communicative, dedicated, and an overall pleasure to work with.
Kristin is the kind of freelancer that you bring on to a project and never worry that the work will be delivered, and in great form.
Highly recommend her work and services!”
Marisa Ruiz Asari
Creative Director @ Data Culture Studio
“Working with Kristin is pure pleasure! We've collaborated with her for multiple projects at Parabole Studio and the result was always impeccable. She creates pixel-perfect charts and maps with smooth interactions.
On top of that, Kristin is very organised and communicates progress clearly every step of the way. Strongly recommend!“
Evelina Parrou
Founder & Creative Director @ Parabole Studio
”Kristin ist einfach richtig, richtig gut!
[...] Als Developerin für Datenvisualisierung und Frontend rockt sie jedes Projekt – egal, was ich oder die Kund:innen sich ausdenken, sie setzt es um. [...] Sie ist unfassbar verlässlich, denkt strukturiert, bleibt immer freundlich und respektvoll – und hat immer den Weitblick, Dinge auch mal kritisch zu hinterfragen.
[...] Kurz gesagt: Wer eine Entwicklerin sucht, die nicht nur liefert, sondern dabei auch noch Spaß macht – hier ist sie. Absolute Empfehlung!”
Alice Landsiedel
Agentur für Branding- und Informationsdesign
”[...] Whenever I have a challenging project that needs to be done right, Kristin is who I turn to. She has an rare combination of technical expertise and design sensibility that makes her invaluable. She's tackled everything from high-profile projects for Google [...]
What sets Kristin apart is her incredible attention to detail and her ability to adapt to even the most unusual requirements. [...] She has a great sense of design and truly understands how to make data tell a story visually, all while maintaining her engineering precision.
Beyond her technical skills, Kristin is simply a pleasure to work with. [...] I can't recommend her highly enough.”
Wesley Grubbs
Pitch Interactive
”I worked with Kristin on an interactive web app to present the research agenda of the Kiel Science Communication Network to an expert audience. She consistently improved on our initial ideas [...].
Working with Kristin was a pleasure: communication was always efficient, she was well organized, highly reliable, and delivered on time despite a tight schedule.
[...] I highly recommend Kristin to any team looking for someone who combines strong coding skills with a clear sense for design and usability.”
Björn Döge
Information Designer @ KielSCN
”Kristin hat, gemeinsam mit Alice Landsiedel, eine großartige Webanwendung für uns gebaut, auf der die Struktur eines komplexen Längsschnittdatensatzes verständlich dargestellt worden ist. Dabei war sie immer sehr kompetent und zuvorkommend, hat richtig gut mitgedacht und hatte ein Auge fürs Wesentliche. Wir können Kristin uneingeschränkt weiterempfehlen und würden immer wieder gern mit ihr zusammenarbeiten! ”
Richard Janzen
Wissenschaftlicher Mitarbeiter @ Universität Leipzig
”Wir empfanden die Zusammenarbeit mit euch als sehr angenehm. Ihr wart sehr strukturiert, klar in der Kommunikation und habt durch eure Impulse dazu beigetragen, dass wir am Ende bessere Inhalte hatten. Obwohl wir einen sehr sportlichen Zeitplan hatten [...], seid ihr ruhig geblieben, so dass wir am Ende alles gut hinbekommen haben. Wir sind mit dem Ergebnis sehr zufrieden und haben dabei auch sehr viel gelernt. Das wird nicht unsere letzte Datenvisualisierung bleiben. Wir haben uns bei euch sehr gut aufgehoben gefühlt.”
Hanna Forys
Leitung Kommunikation @ Finanzwende e. V.
Full versions of the original testimonials can be found in the Recommendations section of my LinkedIn profile.
Have a project in mind?
Let’s bring your data to life with interactive visualizations.




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