Skip to content
KJLet’s talk

KJ Magill / Developer & founder

Cape May, New Jersey

Custom software.
Built to work.

I build thoughtful software for real-world problems. From a business’s first website to products that work in the field and on-chain.

Explore my work Start a Project
Independent thinking. End-to-end building.Web / Mobile / On-chain

01 / Selected work

Ideas into outcomes.

Independent products, collaborative builds, and better tools for everyday business.

01 / Product

Compbook

A robust sales database and market price estimation tool for NBA digital trading cards.

02 / Protocol

Contrax dApp

Open source, no-code tools & auto-compounding vaults on the Ethereum & Arbitrum blockchains.

03 / App

Care For Life

An offline-first Android app for nonprofit field operations in Africa.

More from the workbench

GitHub
CanToCurbTrash and recycling bin valet service for homes in Cape May County.Website (opens in a new tab)Back Bay RentalsStreet-legal golf cart rentals with pickup and delivery across Cape May County.Website (opens in a new tab)Golden PaverPaver cleaning, polymeric sanding, sealing, and restoration across South Jersey.Website (opens in a new tab)Hornless HorseAn AI platform built around radical transparency.Product (opens in a new tab)Tom Magill ConstructionCustom home building, additions, and remodeling in Cape May County, New Jersey.Website (opens in a new tab)Todesko BookkeepingBookkeeping, QuickBooks setup, payroll, and financial reporting for small businesses.Website (opens in a new tab)

02 / A little context

A developer’s craft.
A founder’s mindset.

KJ Magill Based in New Jersey. Building beyond it.

I’m KJ, a full-stack developer who enjoys taking an idea all the way to something people can use.

I founded Flowstate Labs and Cape May Web Design, and co-founded Contrax, a DeFi protocol on Ethereum and Arbitrum. My work spans fintech, ecommerce, mobile apps, digital marketing, and the businesses in my own community.

I care a lot about maintainable code, intuitive design, and understanding the business behind the build. I’ve worked across remote, freelance, and founding teams, taking responsibility for both the details and the bigger picture.

Away from the keyboard: the gym, a basketball court, or somewhere I haven’t been before.

Connect on LinkedIn

03 / What I bring

Built with the whole picture in mind.

/01

Interfaces that feel right.

Responsive websites and mobile experiences with a focus on clarity, performance, and the people using them.

  • React
  • Next.js
  • React Native
  • TypeScript
/02

Solid beneath the surface.

APIs, databases, and smart contracts that turn a polished interface into a useful, working product.

  • Node.js
  • Python
  • SQL
  • Solidity
  • Rust
/03

Ownership from day one.

A hands-on partner from idea to launch, aligning technical decisions with the goals of your business.

  • Product thinking
  • Technical leadership
  • Collaboration

Have something in mind?

Let’s build
something good.

A project, a role, or a conversation.
I’m open to the right next thing.

Get in touch