Restaurant & Retail POS System

Custom POS system development for restaurants and retail that actually holds up on a busy night

I build custom POS software for restaurants and retail shops that need their till to work when the Wi-Fi drops and the queue is six people deep. This is POS system development done by one full-stack engineer who ships and runs production software, not a reseller bolting a logo onto someone else's terminal. If you run a restaurant POS system or a multi-counter shop and you are tired of monthly per-terminal fees, locked hardware, and "reporting" that is really just a CSV export, this is the page for you.

Most off-the-shelf POS products are rented, not owned. You pay forever, you bend your workflow to fit their screens, and the day you want a custom discount rule or a tweak to the kitchen ticket, support tells you it is "on the roadmap." A custom POS flips that. You own the code, the data lives where you put it, and the till matches how your floor actually runs.

What you get

A working point-of-sale system tailored to your business, not a template. Depending on scope, that includes:

• Offline-first operation. The terminal runs on local SQLite and keeps taking orders even with no internet. When the connection returns, it syncs automatically. No connection, no excuse not to sell.
• Inventory management that tracks stock as you sell, flags low counts, and (for multi-location setups) rolls up to a central console so you can see every store at once.
• Kitchen Display System (KDS) for restaurants, so orders fire straight to the line instead of getting lost on a printed chit.
• Multi-counter and multi-user access with per-staff permissions, shift handover, and clean audit trails.
• Payments via Stripe Terminal or Square out of the box, and I can wire up any gateway with a documented SDK or REST API.
• Real reporting — live dashboards, daily Z-reports, product mix, and the numbers you actually use to order stock and cut waste.
• Receipt printing, discounts, promo codes, and loyalty when you need them.

Proof: Flavourz Restaurant POS

I built the Flavourz restaurant POS as a real ordering system — inventory tracking, a kitchen display, and multi-counter sales running together. It runs live in production at a multi-branch Pakistani café — sub-second cash settlement on the busiest till, and it keeps selling through power cuts and internet drops, then syncs two-way with the cloud when the connection comes back. That offline survival is the part most buyers underrate: a café in a load-shedding city cannot afford a till that dies with the power, so I designed for the worst night first and let the good nights take care of themselves.

A POS is not a feature list. It is the one screen your staff touch a hundred times a shift. If it is slow or confusing for even half a second, that cost multiplies across every order, every day. I design for that screen first.

The process

It is deliberately boring, because boring is what you want from the thing that handles your money.

• Walkthrough. We get on a call and I watch how your floor runs — peak hours, the awkward orders, the workarounds your team already invented. That is where the real requirements hide.
• Floor-ready build. I ship a usable terminal early so you can ring up real sales and feel the friction, instead of approving mockups.
• Hardening. Offline sync, edge cases, printer quirks, and the "what happens when two counters edit the same order" problems get solved before launch, not after.
• Go-live and handover. Clean documentation, your data in your hands, and a system you can run without me.

The tech

The terminal is built with React and packaged as a native desktop app (Tauri or Electron) on tablets or fixed hardware. Data sits in SQLite locally for offline reliability and Postgres centrally when you go multi-location. The architecture is intentionally simple — reliable two-way sync, a managed database, no exotic dependencies that rot in two years. Simple systems survive. That matters more for a POS than for almost any other software, because downtime here means a line of customers and a manager calling you at 8pm.

Why work with me

I am a full-stack engineer with 8+ years shipping production software, and I hold Top-Rated-Plus status on Upwork. More to the point: I build and operate my own production AI SaaS, FlowMaticX, which real businesses depend on. I am not selling you a workflow I have never had to keep alive at 3am. I know what it means to be on the hook when software has to run, and I bring that same operator's bias toward reliability to every POS I build. When I say offline-first, it is because I have felt the cost of systems that assume the network is always there.

Restaurant or retail — same engine, different floor

Restaurants get KDS, table or counter flows, modifiers, and kitchen routing. Retail gets barcode scanning, fast catalog search, and stock control across locations. It is the same core that runs a live restaurant floor today — retail gets the same engine with a different surface. That is the advantage of custom over off-the-shelf — you are not paying for a generic compromise that fits neither business well.

A straight answer on cost

A single-terminal POS is a smaller, fixed-scope job. A multi-location platform with central management, loyalty, and advanced analytics is a bigger one. I quote clearly, scope tightly, and I would rather talk you out of features you will not use than pad an invoice. You own the result either way — no per-terminal rent, no hostage data.

If your current till is costing you sales, sync headaches, or monthly fees you resent, let's fix it. Book a free call and walk me through your floor — I will tell you honestly what a tailored POS would take. You can also see my work, including Flavourz, first.