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Meridianstacks
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United Kingdom

SaaS development company for the UK

Meridianstacks is a distributed team of senior engineers that builds multi-tenant SaaS products for UK startups and scale-ups while working UK hours. We own the hard parts — tenant architecture, Stripe billing, authentication, dashboards and integrations — and ship a launch-ready platform for typically 40–70% less than a London agency, with no timezone gap. Your matched hub is Lagos (UTC+1) — a 0–1 hour offset, so our engineers share your full working day.

Get a fixed quote →How we work
In short

A SaaS development company designs and builds the subscription software you sell — the multi-tenant architecture, billing, auth, dashboards and integrations that turn an idea into a product customers pay for monthly. Meridianstacks does this for UK companies with fluent-English engineers working the UK business day, so you get real-time collaboration and same-day delivery. You own all code and IP under UK law, and pay 40–70% less than a local agency — a SaaS MVP from around £20,000.

What we build

Everything your SaaS needs to launch and bill

Multi-tenant architecture

Tenant isolation, per-account configuration and role-based access designed in from day one — so you scale customers, not technical debt.

Stripe billing & subscriptions

Recurring plans, usage-based metering, trials, proration, dunning, VAT and invoices on Stripe — webhooks wired so app and billing never drift.

Auth & access control

Secure sign-up, SSO/SAML, MFA, organisation invites and granular permissions, built to enterprise-buyer expectations.

Dashboards & admin

Customer dashboards, analytics, audit logs and internal admin panels so you and your users can see and manage everything.

Integrations & API

A public API, webhooks and connectors to the tools your customers already use — HubSpot, Slack, Xero, QuickBooks and more.

Scaling & reliability

Cloud deployment on AWS, GCP or Azure with CI/CD, queues, caching, read replicas and monitoring as your tenant count grows.

Why a UK-hours SaaS team wins

SaaS is a conversation, not a handoff

SaaS products evolve weekly — pricing changes, a customer needs an integration, a security questionnaire lands. That cadence breaks down across a 12-hour gap and patchy English. Meridianstacks is built to keep it tight: engineers in your timezone, native-level English for mapping requirements into architecture, and senior engineers you video-call before you commit.

  • 0–1h overlap with the UK working day — live product calls, not overnight tickets
  • Fluent, native-level English — clear specs, code review and security answers
  • Senior engineers — technically assessed before contract
  • UK-law contracts — you own the code, IP, cloud and repos; signed DPA + IDTA
Building SaaS for the UK 9–5
OptionUK overlapCost vs UK agency
MeridianstacksNear-full (0–1h)40–70% less
UK agencyFullBaseline (£50–130/hr)
India offshorePartial (~4–5h)Lowest, but async
In-house hireFullHighest + slow to hire
Pricing

What it costs to build a SaaS in the UK

BuildTypical UK agencyMeridianstacks
SaaS MVP (web app)£30,000–£80,000~£12,000–£30,000
Custom SaaS platform£50,000–£150,000+~£16,000–£45,000
Companion mobile app£30,000–£75,000~£15,000–£35,000
Dedicated SaaS developer (monthly)£8,000–£16,000~£2,500–£5,000

Prices published from our Open Price Book (v1.0 · July 2026 · next review October 2026). All prices exclude VAT.

Indicative ranges; every SaaS engagement is quoted as a fixed price in pounds before work begins.

Questions & answers

SaaS development in the UK — FAQ

How much does it cost to build a SaaS in the UK?
A UK agency typically charges £50–£130 per hour, so a custom SaaS platform runs £50,000–£150,000+ and a focused SaaS MVP £30,000–£80,000. Meridianstacks delivers the same scope for roughly 40–70% less — a SaaS MVP from about £12,000–£30,000 and a fuller multi-tenant platform from around £16,000–£45,000 — each quoted as a fixed price in pounds before work begins.
What is multi-tenant SaaS architecture and do I need it?
Multi-tenancy means many customer accounts share one application and database while their data stays isolated. Almost every B2B SaaS needs it, because it keeps hosting costs low and lets you onboard new customers instantly. We design tenant isolation, per-tenant configuration and role-based access from day one, so you don't have to re-architect after launch.
Can you set up Stripe billing and subscriptions?
Yes. We build recurring subscriptions, metered and usage-based billing, free trials, plan upgrades and downgrades, proration, dunning for failed payments, VAT handling and invoices on Stripe, and we wire the webhooks so your app and billing stay in sync. We also work with Paddle or Chargebee if you'd prefer a merchant-of-record.
How long does it take to build a SaaS MVP?
A focused SaaS MVP — auth, multi-tenancy, core workflow, billing and an admin dashboard — typically launches in 8–14 weeks depending on scope. We phase delivery so a usable version reaches your first customers early while secondary features follow.
Who owns the SaaS code and IP, and is my data safe?
You own the code and all IP under UK law, and your cloud accounts and repositories are client-controlled from day one. We sign a UK-GDPR-compliant DPA, register processing with the ICO where relevant, and add an IDTA for any cross-border data transfer. New clients can start on milestone billing, so you only pay for delivered work.
Why choose Meridianstacks over offshore SaaS teams in India or Eastern Europe?
Our engineers work a near-full overlap with the UK day — a 0–1 hour offset versus 4.5–5.5 hours for India — and English is spoken at native level, which matters when you're mapping product requirements into architecture. You also meet your senior SaaS engineers on a video call before committing.
What tech stack do you use for SaaS?
Typically React or Next.js on the front end, Node.js, Laravel/PHP or Python on the back end, PostgreSQL for multi-tenant data, and Redis for caching and queues. We deploy on AWS, GCP or Azure with CI/CD, and add Stripe for billing and an LLM layer where AI features are part of the product. We match the stack to your roadmap rather than forcing a house framework.
Can you scale my SaaS and take over an existing codebase?
Yes. We handle horizontal scaling, database read replicas, background job queues, caching and observability so the platform copes with new tenants and traffic. We also take over and refactor inherited SaaS codebases — starting with an audit of the architecture, security and billing before we extend them.
Do you build dashboards, integrations and admin tools?
Yes. Customer dashboards, analytics, role-based admin panels, audit logs and self-serve onboarding are core to most SaaS products. We also build the integrations buyers expect — single sign-on (SSO/SAML), webhooks, a public API, and connectors to tools like HubSpot, Slack, Xero or QuickBooks.
How do payments and contracts work?
We invoice in pounds against agreed milestones — you only pay for delivered work. Contracts are UK-law, assign all IP to you, and include a signed DPA and IDTA where personal data is involved. You can engage us for a fixed-scope build or a dedicated SaaS team on a monthly retainer.

Get a fixed quote in pounds.

Book a free 30-minute scoping call with a senior engineer — in UK hours. Honest answer on architecture, timeline and cost for your SaaS.

Book a free scoping call →