Cecelia Dongarra
Client
PlayoffBlitz
Role
Product & UI/UX Designer
Year
2025
Project info

Designed a mobile companion to the PlayoffBlitz fantasy football platform. I owned the UX/UI, component system, and high-fidelity interaction prototypes across the app.

PlayoffBlitz showcase
PlayoffBlitz showcase
PlayoffBlitz showcase
PlayoffBlitz showcase
PlayoffBlitz showcase
PlayoffBlitz showcase

Overview

PlayoffBlitz had an established desktop product but no dedicated mobile experience. My role was to translate the existing feature set and visual identity into an app that could work naturally on a phone.

My Role

I led the mobile design from information architecture through high-fidelity prototyping, designing 20+ screens, building reusable components, and testing key interactions with Figma Make.

20+

Mobile screens designed

3

Interactive prototype flows

1

Reusable component system

End-to-end

Mobile UX/UI ownership

Grid of all designed app screens
The challenge

Carrying a data-heavy web product onto a small screen.

The desktop product relies on dense tables, player stats, and league information. The challenge was deciding what to prioritize, what could be simplified, and how to keep frequent actions fast on mobile.

Constraints

Early process

Structuring the experience before high-fidelity design.

I mapped the app's navigation and screen relationships first, then used low-fidelity wireframes to test hierarchy and layout before moving into polished UI.

App information architecture diagram
Low-fidelity wireframe set
Core experience

Designing around the tasks users need most.

The final mobile experience focused on three primary areas: setting lineups, checking player data, and viewing standings. Each section was designed to keep key information accessible without overwhelming the smaller screen.

Set LineupDesigned to make player swaps easy to understand while keeping position and availability information visible.
Data CenterOrganized dense player statistics into a mobile-friendly format with clear hierarchy and easier scanning.
StandingsSimplified rankings and league performance so users could understand their position at a glance.
Data Center
Open full screen ↗
Prototyping with Figma Make

I treated AI like a partner: prompt, review, refine.

After establishing the UI, I used Figma Make to build and test high-fidelity interactions. I prompted specific behaviors one at a time, reviewed the results, and refined them to match the intended experience.

Key behaviors I prompted & refined

Figma Make did more than speed up prototyping. Testing real interactions surfaced usability issues like duplicate selections, unclear completion states, and missing functions before the prototype was finished.

Figma Make workflow
Design system

Building consistency into the product.

I built a reusable component system for navigation, filters, player data, tables, and repeated interaction states. Shared patterns helped keep the experience consistent across 20+ screens and made updates easier as the prototype evolved.

UI component board
Visual system

Extending the PlayoffBlitz brand into mobile.

I carried the existing PlayoffBlitz identity into the app through typography, color, iconography, and interface patterns so the mobile experience felt connected to the website.

Matching website
Brand system — color and type
Outcome

A mobile experience built for clarity and speed.

The final prototype translated PlayoffBlitz's core fantasy football experience into a focused mobile product with clear navigation, reusable components, and realistic interactions across the app's main flows.

What I learned

Designing for a smaller screen reinforced the importance of prioritizing the information and actions users need most. Prototyping real interactions also helped surface usability issues that static screens alone would not have revealed.