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Available for new projects · Chicago, IL

Designthatspeaksbeforeyoudo.

Design.

Websites starting at $500See packages

25k+

Users Reached

11+

Clients Served

4+

Years Experience

18 mo

Longest Client Partnership

What I Offer

What can I create for you?

Whether you’re launching something new or leveling up an existing project, I offer design + development expertise that brings clarity and confidence to your digital vision.

Why jCode Studio?

I believe great digital experiences come from collaboration, curiosity, and hustlecare. Every project is a partnership — I listen closely, design thoughtfully, and build with intention so your ideas translate into results. Let’s create something that truly reflects your vision.

WCAG 2.1 AA on every project

Accessible by default.

About 1 in 4 U.S. adults lives with a disability. If they can't use your site, they can't become your customers. Accessibility isn't an add-on I charge extra for. It's built into every site from day one.

  • Readable for everyone

    Color contrast, text sizing, and layouts checked for low vision and color blindness.

  • Keyboard & screen reader ready

    Every button, form, and menu works without a mouse and makes sense read aloud.

  • Less legal risk

    Building to WCAG 2.1 AA helps protect your business from ADA website complaints.

Tools & Technologies

The modern stack I use to bring ideas to life — fast, accessible, and built to scale.

Technologies: React, Next.js, Tailwind CSS, JavaScript, Framer Motion, GitHub, TypeScript, Python, Figma, Vercel, Node.js, Angular, Sanity, Supabase

Client Reviews

What Clients Say

“I have been working with Joan Karstrom for 18 months and couldn't be happier with her work. She is highly knowledgeable in her field, a great communicator so I understand what's happening, and open to feedback while taking suggestions. It is a real pleasure to work with Joan.”

KO

Kim Olver

Olver International | CEO

18 months

“Working with Joan has been an absolute pleasure! She transformed our product into a beautiful, functional site that we're truly proud of. Her professionalism, sharp eye for detail, and deep commitment to creating the best possible product were evident in every phase of the project. Joan didn't just approach this as a job, she embraced our organizational mission to make crime data more accessible to the Houston community and integrated that purpose into her work with care and dedication. She has been an invaluable asset to our team, and I'm genuinely looking forward to more opportunities to collaborate with her in the future.”

NW

Nicki Wahlers

Technical Program Manager | Crime Stoppers of Houston

Let's Build Something
Together

Whether you have a full vision or just a spark of an idea, I'd love to help you bring it to life with thoughtful design and clean development.