SaaS development company UK
Build a SaaS that scales from day one.
A SaaS is easy to start and brutal to scale. The hard parts — multi-tenancy, billing, roles, reliability — are exactly where most builds fall over. We engineer those foundations properly the first time, so growth is a good problem, not an outage.
SaaS development problems we fix.
Your last build buckled the moment real users showed up.
We design for multi-tenancy, load and reliability from the start, so the platform holds as you grow instead of needing a rebuild.
Billing, roles and admin always end up half-built and painful.
We treat subscriptions, permissions and admin tooling as first-class — Stripe billing, role-based access and an admin panel your team actually uses.
You need to move fast but can't afford technical debt that bites later.
Senior engineers, a clean architecture and tests where they matter — fast now, and still fast in a year.
Our SaaS development services.
Multi-tenant architecture
Clean tenant isolation, data partitioning and a model that scales from your first customer to your thousandth without a rewrite.
Billing & subscriptions
Stripe-powered plans, trials, metering, upgrades and dunning — the revenue plumbing done right so you can charge from launch.
Dashboards, roles & admin
The product UI, role-based access control and the internal admin tools your team needs to run the business day to day.
APIs & integrations
A clean public API, webhooks and the third-party integrations your customers expect — built to be documented and dependable.
What you get from our SaaS development.
- A revenue-ready SaaS, live and taking payments
- Architecture that scales without a rebuild
- Admin and analytics to run the business
- Clean, documented code your team can own
Our SaaS development stack.
SaaS development questions, answered.
How much does it cost to build a SaaS platform?
Full SaaS platforms at Softgen start from £45,000 and scale with complexity. We scope it in a short discovery and give you a fixed plan, price and timeline before any build begins.
How long does it take to build a SaaS product?
A first launch-ready version typically takes 8–12 weeks. If you need something in users' hands sooner, we'll start with an MVP and grow it into the full platform.
What is a SaaS platform?
A SaaS (software as a service) platform is software customers use online by subscription, each with their own account and data kept apart (multi-tenancy). We build the whole platform: sign-up, billing, the product itself, admin and the APIs around it.
Should I build a SaaS team or hire an agency?
To launch fast, an agency gives you a senior team on day one at a fixed price. Hire in-house once you have traction and know the roles you need: we hand over clean, documented code your team can take on.
Can you take over an existing SaaS codebase?
Yes. We regularly inherit, stabilise and scale existing products — starting with an audit so you know exactly what you have before we extend it.
Know before you build.
How much does it cost to build a SaaS in 2026?
Most serious SaaS platforms cost £45,000–£250,000 to build. Here's what sets the number, the running costs founders forget, and how to launch a sharp v1 for less.
Read the guide Founders · 7 min readHow much does it cost to build an app in the UK in 2026?
A UK studio build in 2026 runs from £15,000 for a focused web app to £250,000 for a full SaaS platform. Here are Softgen's real ranges by app type, what moves the number, and the running costs people forget.
Read the guide App Building · 10 min readHow to add LLM features to your existing app
Your app already works. Adding AI that makes it noticeably better is the hard part. Here's the exact playbook we use to wire in agents, copilots and RAG without turning it into a support nightmare.
Read the guide AI · 7 min readWhat is an AI copilot — and should you build one into your product?
Every product is bolting on a copilot. Here's what an AI copilot actually is, how it differs from a chatbot and an agent, and whether yours needs one.
Read the guide Founders · 7 min readHow much does it cost to build an MVP in 2026?
Most MVPs land between £24,000 and £90,000. Here's what drives the number, where the money goes, and how to get more product for less.
Read the guide Founders · 6 min readDo you need a fractional CTO?
A fractional CTO gives you senior technical leadership without a full-time hire. Here's when it's the right call — and when a senior build partner is the better one.
Read the guideWhat we've built, and the calls to make first.
A two-sided marketplace engineered to scale from the first user.
A multi-tenant SaaS marketplace with billing, roles, dashboards and an API — built on foundations that held as traffic grew instead of needing a rebuild.
Read more Case study · E-commerceThree UK gift shops on one commerce engine, with 16,000+ products live.
Next Day Gifts, Holistic Tree and Your Personalised Gifts: three standalone UK shops, each with its own brand and storefront, all running on one headless commerce engine we built and run ourselves.
Read more ComparisonBuild vs buy software
Buy an off-the-shelf product or build your own? Here's a fair comparison on cost, speed, fit and ownership — and the test that decides it.
Read more ComparisonFixed-price vs time & materials
Pay a fixed price for a defined scope, or by the hour as you go? Here's how the two models really compare on risk, certainty and incentives.
Read more ComparisonSoftware agency vs freelancer vs in-house team
Should you hire a freelancer, build an in-house team, or work with an agency? Here's a fair comparison across the factors that actually decide it.
Read moreYou might also need.
Ship AI that actually works
AI & LLM Development
Idea to launch in weeks
MVP Development
Scale without surprises
Cloud & DevOps
Ready when you are
Let's build the thing.
Tell us what you're building and we'll come back with a plan, a price and a date. No obligation, no jargon.