Case Study · Core Product Redesign

Checklists for Operations & HACCP

Kept a customer who'd threatened to walk, by rebuilding the tool restaurant teams run their day on and merging two systems into one.

Role
UX/UI Designer · feature owner
Platform
Web + Manager app
Timeframe
2022 to 2024 · several iterations
Team
Product · 2 eng teams · QA
Checklists · daily view
Redesigned Checklists page: checklist cards with status and progress on the left, task cards with notes, images and temperatures on the right
Adding a task: answer types grouped into Operations and Food safety

A restaurant runs its whole day through checklists. I rebuilt that core experience from the ground up, merging Operations and food-safety checks into one product for the first time. It shipped, kept the customer who'd threatened to walk, and helped bring new ones in.

At a glance
01

Where it started

When I took it on, the tool did what it was built to do, but it hadn't grown with users' needs. Configuring a single task meant hopping between tabs in a small modal, and almost everything teams actually needed didn't yet exist. My first job was to map that gap honestly.

Old checklist list view
Before, the old checklist page: flat list, unlabelled icons, and actions buried in each row.
Old task editor
Before, the old task editor: one task's settings split across Setup / Locations / Filter / Wizard tabs.
PROCESS

Before the pixels

This is how I would usually start. Once I've pulled together input from stakeholders across the business, along with whatever metrics are available, I map the whole experience on paper and on a board, not in high fidelity: the landing page and every checklist state, the task and its answer types, setup and scheduling. That groundwork is what made the system hold together before it ever looked like anything.

Checklists user-flow map
Part of the flow map for Checklists, worked out before a single high-fidelity screen.
02

One system, one self-explaining card

I made two moves that defined the redesign. First, merge Operations and HACCP into a single system: I let permissions quietly decide which answer types appear, so the modules stay independently sellable but the team only ever learns one tool. Second, make the task card the centrepiece: I put every field that defines a task on the card, moved the answer input inline, and turned ambiguous icons into clearly labelled actions.

Redesigned checklist page
After, the redesigned checklist page: self-describing task cards, inline answers and status filters.
03

The scope

This was never a reskin. I rebuilt how checklists are created, scheduled, assigned, completed and governed; the answer types alone went from one to a dozen:

Checkbox · default Yes / NoDateTimeDate & TimeNumericRatingFood-safety checkFood temp · Bluetooth / manualAreas & equipment tempPPM
Creation & scheduling

Quick-create with sensible defaults; advanced setup adds unlock rules, due time (incl. "X after opening"), repeat (never / daily / weekly / monthly / yearly), auto-lock, and duplication.

Assignment & hierarchy

Assign by location, role or employee across HQ → franchise → location. A top-level checklist cascades to every location beneath; one edit can be Synced down, with local overrides. Built for 1,000+ locations.

States & behaviours

Every state designed and given a behaviour: urgent (auto-resets), overdue, paused, locked, completed, signed off. Auto-lock stops checklists being ticked "done" without being done.

Food safety

Enforced corrective actions: a check couldn't be marked done just by ticking it. If a reading failed, the fix had to happen and the temperature retaken first, whether captured by Bluetooth thermometer or entered manually, with PPM checks for sanitiser strength built in.

Checklist setup panel
Task setup panel
Where the scope lives: checklist setup (left) with unlock rules, due time, repeat, assignment, lock and sign-off; task setup (right) with answer type, due time and required photos or notes.
04

The hard parts

Three problems I had to hold at once.

One system, still two products

Operations and HACCP stayed separate products underneath, sold and licensed on their own. The merge was on the surface: a customer with both now sees one checklist, with both kinds of tasks side by side.

Ownership, cascade & sync

A checklist is owned by whichever level created it, HQ, franchise or location, and edits cascade down. That cascade created conflicts everywhere, in scheduling, in overridden fields, in who a task was assigned to, whenever a checklist changed after its tasks already existed. I had to design for each one, flagging what broke and blocking further changes until it was resolved.

Enforcement that never blocks the floor

Rules had to be strict enough to matter, but never so rigid they stopped a busy kitchen. Checklists lock after their due time, with a grace period to still edit; a failed check can require a corrective action before it counts as done, but that's a toggle, not a default.

"We need to be strict enough that there's accountability, but never so many obstacles that the work doesn't get done."

Design rationale: designing for accountability
05

What came later

Once the core shipped, I kept pressure-testing decisions directly in customer advisory boards. From there, further work grew: Manager sign-off, with PIN sign-off on mobile, plus an Operations dashboard.

Early pencil sketches for the reporting dashboard
Where the reporting dashboard began: early pencil sketches, long before the built screens below.
Operations dashboard
Built on the core: manager sign-off above, checklist dashboard below.
06

Reflection

This is the project that taught me to design a system, not a screen: to think in states, behaviours and edge cases. I worked closely with a product manager throughout: research, spikes, and the decisions that shaped it, all done together. Merging two products into one without losing what either side needed is the part I'm proudest of. So is the scheduling: genuinely complex underneath, but something I made feel simple.

Delivered by a team across product, engineering and QA; product decisions and research were made together with a product manager, and I owned the design. Focuses on the design problem, process and decisions; outcomes are described qualitatively rather than as tracked metrics.