Why I Built ShiftWiz

I am a software developer. I have never managed a coffee shop, worked a closing shift, or spent a Sunday afternoon staring at a blank scheduling grid trying to figure out who can cover Saturday.

But I watched someone I love do exactly that, week after week, and I could not stop thinking about how obviously broken the whole process was.

Watching Cassidy schedule on Sling

My fiancée Cassidy is the manager at zBeans, a local coffee shop. Part of her job is building the schedule every week. She does it on Sling, which is one of the more popular scheduling platforms out there.

Here is what that process actually looked like: she would open Sling's schedule view, which is a blank grid, and start placing shifts by hand. She would check her phone for availability texts that employees had sent that week. She would try to remember which time-off requests were coming up. She would cross-reference who was certified to open and close. She would check if anyone was approaching overtime. Then she would post the schedule and almost immediately get a message saying someone's availability had changed or a time-off request had been missed.

Sling is a decent platform. It is not the problem. The problem is that no scheduling tool I could find actually built the schedule for her. They all provided a grid and expected a human to do the intellectual work of constraint satisfaction across 15 employees, multiple days, multiple shift types, and a constantly changing set of availability windows.

That is a genuinely hard combinatorial problem. Humans are not great at it. Computers are very good at it. So I built a computer program to do it.

zBeans was the testing ground

I had something most software projects do not have in early development: direct, continuous access to a real user with real problems in a real environment. Cassidy was not a test user. She was the person I was building this for. When something did not work the way her team actually operated, I found out immediately.

That feedback loop is what made ShiftWiz's engine genuinely capable rather than just technically functional. I was not designing for a hypothetical scheduling scenario. I was solving Cassidy's actual scheduling scenario, with her actual employees, their actual availability patterns, their actual time-off requests, and the actual constraints of running a coffee shop with a small team.

After several months of using ShiftWiz at zBeans, the results were clear: schedule generation that used to take two to three hours happened in under a minute. Availability conflicts dropped dramatically because the engine reads every submitted record before making a single assignment. The schedule quality, measured by the engine's own 8-dimension scoring system, was consistently better than what manual construction produced.

ShiftWiz is not a coffee shop tool

This is important to say clearly: ShiftWiz is not built for coffee shops. It is not built for small businesses. It is a scheduling engine built on solid computer science principles that adapts to whatever data it is given.

The core algorithm (simulated annealing with forward-checking backtracking and multi-seed selection) does not care whether you are scheduling 10 baristas or 200 warehouse staff. It cares about constraints: who is available, what are the minimums and maximums, what certifications are required, what does the history say about fairness. Feed it accurate data and it produces a good schedule regardless of the industry or team size.

zBeans was where I proved it worked in the real world. It is not the ceiling for what ShiftWiz can do. Restaurants, retail stores, hotels, event staffing, logistics teams, healthcare scheduling — any operation where people work shifts with varying availability is a fit for ShiftWiz's engine.

Why I decided to make it available to everyone

The more I talked to people about the scheduling problem, the more I realized it was universal. Every manager in every service industry goes through the same Sunday afternoon ritual. They all have the same complaints: it takes too long, it is never quite right, employees always find an issue, and the whole thing starts over next week.

I built ShiftWiz to solve this problem and I know it solves it well. Making it available at $29 per month with no per-seat fees was a deliberate decision. The tool should be accessible to a small coffee shop and to a 500-person operation without the pricing structure penalizing growth.

I built ShiftWiz entirely by myself. Every feature, every line of the engine, every design decision came from a single person watching a real problem and deciding to solve it properly. That means no committee decisions, no feature bloat driven by enterprise contracts, no trade-offs made for the wrong reasons. Just a scheduling engine built to be as good as I could make it.