// about

Kurt Kroll

I'm a full-stack developer who lives in React and data-heavy interfaces. I build simulation tools and research dashboards for fantasy sports turning messy player data into fast, readable UIs. I care about clean architecture, tight feedback loops, and interfaces that make complex decisions feel simple.

// projects

RotoWire Fantasy Football screenshot

RotoWire Fantasy Football

Architected and shipped this hybrid React Native app with 90% code reuse across iOS and Android. Served as technical lead for the team's React Native adoption, setting code-review standards and mentoring on component design patterns. An early adopter of AI-assisted development with Claude Code, integrating it into daily workflows to accelerate delivery.

  • React Native
  • IOS
  • Android
  • API Design
Picks & Props screenshot

Picks & Props

Co-developed this React Native app for iOS and Android and built all user-management screens: login, profile settings, push preferences, and an in-app help center. Integrated a new subscription provider that drove a 20% revenue increase, with PHP RESTful APIs supplying dynamic data across the app.

  • React Native
  • IOS
  • Android
  • API Design
DFS Optimizer screenshot

DFS Optimizer

Engineered the core algorithm, processing user-defined constraints and player data to generate statistically optimal DFS lineups.

  • Hungarian Algorithm
  • React
  • Data Visualization
MyLeagues screenshot

MyLeagues

Built a streamlined league sync flow that pulls in third-party league info, teams, and players, processes that data, and outputs it to a league-specific dashboard stocked with the best fantasy tools for your roster.

  • React
  • Data Processing
  • API Design
NHL Advanced Lineups screenshot

NHL Advanced Lineups

Designed and developed this tool to show confirmed NHL lineups with line-by-line stats, goalie splits, and goal-scoring and shot-volume matchup visualizations.

  • React
  • Data Visualization
  • Full Stack
B2B Data Partners screenshot

B2B Data Partners

Designed and developed customizable RESTful APIs for high-profile sports companies like ESPN, Yahoo, and CBS. Responses can toggle between JSON and XML, and API components are reusable across multiple partners to speed up new integrations.

  • PHP
  • RESTful APIs
  • B2B