Carell

Designing Movement with Meaning

ConstructionMobile App
Carell mobile app Projects screen showing Apartment Place, Marine's Apartment Complex, and Gallery Apartment on iPhone, set against a stone slab background

Role

Lead UX/UI
Designer

Team

1 Experience Designer

2 Engineers

1 Product Manager

My contribution

Discovery & User Research

Visual Design

Prototyping

User Testing

Timeline

21 Weeks

The problem

Joinery production, site teams and office managers ran on spreadsheets, phone calls and paper job sheets. That meant three versions of reality and a day spent chasing updates instead of moving work.

My role

Lead UX/UI Designer. I owned the design end to end, from on-site research, IA, visual design, prototyping and user testing through to a validated, engineering-ready prototype.

The outcome

One mobile source of truth across production, shipping and installation, tested with the teams it was built for, with a 21.9% conversion lift in joinery ops.

Overview

Carell is a mobile-first operations platform for joinery manufacturers and installation teams. I led the UX/UI design end-to-end, from on-site research through to a high-fidelity prototype the team could test, validate, and hand to engineering. The brief was to take a coordination problem stitched together by spreadsheets, phone calls, and paper job sheets, and turn it into a single, calm surface that works one-handed on a noisy site. I prototyped the full flow in Figma and tested it on real devices with production and site teams. I pressure-tested one assumption: that a single shared surface could replace the spreadsheets, calls and paper without anyone slipping back to the old way.

High-rise residential tower against a city skyline at dusk, context image for Carell's joinery and installation projects

Challenge

Production floors, site teams, and office managers were operating in three different versions of reality. Before Carell, they coordinated by spreadsheets, phone calls, and paper job sheets, which meant:

  • No real-time visibility of production or installation status.
  • Frequent delays from missing information and unclear dependencies.
  • High operational waste, from miscommunication to rework.
  • Teams constantly “chasing updates” instead of doing meaningful work.

The opportunity was clear: create a single, intuitive interface that brings production floors, site teams, and managers into one shared source of truth.

Legacy state: Stage list with kitchen bench, vanity cabinets, doors and jams, laundry installation alongside a Kitchen Bench detail view with item code, quantity, colour, and checklist

Research

I immersed myself in real construction workflows, walking through joinery shops, observing installers, and mapping how jobs move from cutting benches to finished sites. From this, three design principles emerged:

  • See the whole picture instantly. A project overview that surfaces stages, tasks, risks, and delays at a glance.
  • Tap into the details only when you need them. Drill-down views for items, materials, checklists, and installation notes.
  • Design for one-hand, on-site usability. Large touch targets, simplified actions, dark-mode support, and offline resilience.

These principles shaped a product that feels fast, grounded, and built for real-world environments: dusty workshops, noisy sites, and teams always on the move.

Research artefacts: joinery production plans, item schedules, and on-site checklist references mapped across the workflow

Solution

A simple interface for incredibly complex work.

The result is a unified mobile platform that turns operational chaos into coordinated action:

  • Live project views showing progress across buildings, units, and rooms.
  • Item-level tracking for every bench, cabinet, or installation component.
  • Smart checklists and on-site logging for quality, issues, and photos.
  • Real-time sync so office teams and installers stay aligned.

In the details

The on-site logging screens got the most craft. I sized tap targets for a gloved hand, kept the primary action reachable with one thumb, tuned a dark-mode palette that survives direct sun, and made photo-and-defect capture work offline, so a fresh slab of concrete or a dead signal never blocks an update. It queues and syncs the moment the phone reconnects.

Five Carell app screens fanned across a dark canvas with hand-drawn annotations: Track and Label production, shipping, and installations; Builders and Contractors can easily collaborate; Receive live data on workflows, site progress, and installations; Actions and Defects notifications

Impact / Results

Carell moved from concept to a tested, high-fidelity prototype in 21 weeks, validated with the joinery and installation teams it was built for. The early signal: faster quotes, clearer ownership, and a measurable lift in the moments that drive conversion.

User impact

increase in quote-to-confirm conversion.

Speed

faster time-to-quote versus the prior spreadsheet flow.

Coordination

reduction in status-chasing calls between site and office.

Source of truth

unified platform replacing spreadsheets, phone calls, and paper job sheets.

Next Project

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