Custom SaaS Development
From MVP to Production-Ready Platform
We build SaaS products for founders and product companies across the US, UK, and Australia. We run three live SaaS products of our own (TableTap, Slotwise, QRPixel), built i-mve for 510 UK companies, and a smart parking SaaS running across Australia. Multi-tenant architecture, subscription billing, and the integrations your customers actually need, built properly from day one so you don't rebuild once you're scaling.
No commitment. Response within 24 hours.
Where SaaS Products Get Built Wrong
Most SaaS failures aren't market failures, they're technical failures. The wrong architecture decision at month two costs six months of rebuild at month twelve.
Single-tenant architecture for multi-tenant scale
Building with a single-tenant mindset when your product is meant to serve hundreds of companies creates a rebuild that costs more than the original build.
MVPs that aren't actually minimal
Founders scope their SaaS MVP at two or three times what it needs to be. Every unnecessary feature delays launch and burns budget on things your first users never asked for.
Billing complexity underestimated
Stripe integration sounds simple. Subscription plans, trials, usage billing, invoice customisation, failed-payment handling, proration: the billing layer is always more complex than the first estimate.
Doesn't scale past the first 100 users
Apps that work for 10 users often have architectural issues that only surface at 500. Database design, query optimisation, caching strategy: these decisions matter more than they look at the start.
SaaS Development Services
Each block: the problem in your words, what we build, and the outcome.
SaaS MVP Development
"We need to get to market signal without burning the runway." We build the smallest version of your product that delivers real value to real users, typically 12 to 20 weeks, fixed scope and honest timeline.
Multi-Tenant Architecture
"We can't retrofit multi-tenancy once we have customers." We build proper B2B SaaS architecture with isolated data, per-company workspaces, and company-level billing, the way we built i-mve for 510 companies.
Subscription Billing Integration
"Billing is eating more time than the product." We build Stripe or Paddle integration covering plans, trials, upgrades, downgrades, usage billing, invoicing, and failed-payment handling, as its own workstream.
SaaS Integrations & APIs
"Enterprise prospects keep asking for an API and webhooks." We build the integrations that make your product sticky: a REST API, webhooks, Zapier compatibility, and third-party platform integrations.
How a SaaS Build Actually Runs
Drawn from building i-mve and running our own SaaS products, not a generic diagram.
MVP Scoping
We cut the feature list down to what actually delivers value to your first users, because a bloated MVP is the most common way a runway gets burned.
Tenancy & Data Architecture
The isolation model, workspace structure, and billing boundaries are decided up front, so multi-tenancy is designed in, not retrofitted at 500 users.
Billing as Its Own Workstream
Plans, trials, proration, and failed payments are scoped and built deliberately, because the billing layer is always bigger than the first estimate.
Staged, Fixed-Price Build
We build in stages with a working demo every week. Fixed price means scope surprises are our problem, not your invoice.
Load & Scale Testing
We test the data model and queries against realistic load before launch, because the architecture problems that surface at 500 users are cheap to fix now and expensive to fix later.
Launch & Ongoing Support
SaaS products keep evolving after launch. We plan for a build that continues, the way our own products do.
SaaS We've Shipped and SaaS We Run
Three live products of our own, plus multi-tenant platforms built for clients across three markets.
TableTap, Slotwise and QRPixel: SaaS We Build, Run and Maintain
We run three live SaaS products of our own. TableTap is a restaurant table, reservation, and customer management platform at tabletap.net. Slotwise is healthcare appointment scheduling with browser-side note encryption at slotwise.pk. QRPixel is a link-in-bio and branded QR code platform at qrpixel.net.
Each is multi-tenant, has subscription billing, and carries a real support and operations load. That's the difference between an agency that has read about running SaaS and one that does it.
i-mve: Operations SaaS for the UK Removals Industry
i-mve is a full multi-tenant SaaS platform we built from scratch for the UK removals and storage industry: job management, quoting, invoicing, contracts, and containerised storage billing, with accounting and lead-platform integrations. Built by Teamseven and maintained by us since 2022. Now live and serving 510 companies on one platform.
Read the i-mve case studySmart Parking Automation (Australia) and Mebag (US)
We built a multi-site smart parking SaaS for an Australian operator, now running at parking stations, shopping centres, hotels, and enterprise sites including a national ambulance service. We also built Mebag, an AI-powered universal shopping cart for the US market, where OpenAI powers product discovery. The Mebag engagement is currently on hold, resuming September 2026.
Smart parking case studyMebag case studyBuilding a SaaS product?
The next step is a call. We'll pressure-test your MVP scope and your architecture assumptions before we quote anything, and tell you honestly if a custom build isn't the right move yet.
Book a scoping callThree Ways to Engage Us
A pre-launch founder, a funded team scaling past their first architecture, and a team inheriting a codebase need different things. Pick the one that sounds like you.
Questions About SaaS Development
Do you build SaaS MVPs?
Yes. SaaS MVP development is one of our most common engagement types. We scope the minimum feature set that delivers core value to your first users, build it properly, and ship it. Most SaaS MVPs we deliver run 12 to 20 weeks depending on feature scope and integration complexity.
Do you build multi-tenant SaaS platforms?
Yes. Multi-tenant architecture is one of our core competencies. We built i-mve as a multi-tenant platform now serving 510 companies, and a smart parking SaaS running across many sites in Australia. We make the isolation, workspace, and billing decisions at the start so you do not retrofit multi-tenancy later, which never ends well.
Can you take over an existing SaaS codebase?
Yes. We regularly inherit and extend existing SaaS codebases, and we offer Legacy Software Modernization and Software Project Rescue for it. We start with a code quality audit before recommending a path: sometimes extend, sometimes refactor, sometimes a clean rebuild is the honest answer. We tell you which applies.
What is your minimum project size for SaaS development?
There is a floor below which the scope is not large enough to build something maintainable, and we would rather be honest about that on the scoping call than take on something we cannot do properly. We tell you straight away if a project is under that line.
How long does a SaaS MVP take to build?
Typically 12 to 20 weeks from signed proposal to production deployment, depending on feature scope, integration complexity, and how quickly the client side moves. We scope every project individually and do not give you a range and then miss the top end.
Do you build subscription billing?
Yes. Stripe or Paddle integration covering plans, trials, upgrades, downgrades, usage billing, invoicing, proration, and failed-payment handling. Billing is always more complex than the first estimate, so we scope it as its own workstream rather than an afterthought.
Have you run your own SaaS products, or only built for clients?
Both. We run three live SaaS products of our own: TableTap (restaurant operations), Slotwise (healthcare scheduling), and QRPixel (link-in-bio and branded QR). Running our own products means we feel the operational and support cost of the decisions we make on client builds.
How much does it cost to build a SaaS product?
Scope drives it. An MVP, a multi-tenant platform with billing and integrations, and a mature product with an API and enterprise features are different projects. Everything is fixed-price after a scoping call, and you can get a rough range from our cost calculator first.
Will you tell us if our SaaS idea does not need a custom build yet?
Yes. Sometimes a no-code tool or an off-the-shelf product gets you to market signal faster and cheaper. If that is the honest answer for where you are, we will say so on the call rather than sell you a build you do not need yet.
Building a SaaS product?
Let's talk about it.
We've shipped SaaS platforms across the US, UK, and Australia since 2017, and we run three live products of our own. Whether you're at the idea stage, scaling past your initial architecture, or inheriting a codebase, we'd like to hear about it.