SaaS Development Agency

From idea to live SaaS product — without the tech headaches.

We architect, build, and launch subscription platforms from MVP to market. Multi-tenant architecture, billing integration, user management — the full stack, handled.

Uptime 99.9%
Concurrent Users 50K+
const app = express(); app.use(auth()); app.use(billing()); app.listen(3000); API PERFORMANCE DB Redis CDN

SaaS development that's engineered for revenue, not just releases.

Most agencies can build software. Very few understand the commercial mechanics of subscription products — pricing models, churn reduction, onboarding funnels, and the unit economics that determine whether your platform survives past Series A.

MVP in 8–12 Weeks

We ship validated MVPs fast — not throwaway prototypes, but production-grade foundations built on clean architecture that scale without a rewrite at Series A.

Multi-Tenant Architecture

Every platform we build is multi-tenant from day one. Shared infrastructure, isolated data, centralised billing — the architecture pattern that keeps your marginal cost per customer approaching zero.

Built for Recurring Revenue

Stripe-integrated subscription billing, usage-based pricing tiers, self-serve upgrades, dunning management — the revenue infrastructure that turns your software into a money machine.

Platform Engineering

Full-stack SaaS development from infrastructure to interface.

We don't just write code — we build the entire ecosystem your SaaS product needs to operate at scale. That means cloud infrastructure provisioned for elastic demand, CI/CD pipelines for zero-downtime deployments, and application architecture designed to evolve alongside your business model.

  • Cloud-native infrastructure on AWS, Vercel, or Docker containers
  • RESTful and GraphQL API architecture for third-party integrations
  • Database design optimised for multi-tenancy and query performance
  • Real-time features via WebSockets for collaborative workspaces
  • Role-based access control and team management systems
React Next.js Node.js Laravel PostgreSQL Redis AWS Docker
Frontend
Next.jsReactTailwindCSS
↕ API Layer ↕
Backend Services
AuthBillingTenancyWebhooks
Infrastructure
PostgreSQLRedisAWS S3Docker
MVP Development

From napkin sketch to paying customers in under 90 days.

Speed matters in SaaS — every week without paying customers is a week burning runway. Our MVP process is designed to get your core value proposition in front of real users as fast as possible, with just enough polish to charge for it and just enough infrastructure to learn from it.

  • Lean validation sprints to identify your killer feature
  • User onboarding flows engineered for activation and retention
  • Stripe-integrated billing from day one — not bolted on later
  • Analytics instrumentation to measure what matters before you scale
  • Iterative post-launch sprints driven by real user behaviour data
Discuss Your MVP
Wk 1–2
Discovery & Design
Wk 3–6
Core Build
Wk 7–8
Billing & Auth
Wk 9–10
QA & Launch
🚀 MVP Live — Paying Customers
Scale & Optimise

The real work starts after launch.

Getting to market is step one. Growing from 100 users to 10,000 requires a different playbook — performance optimisation, conversion rate experiments, churn reduction systems, and infrastructure that auto-scales without your input. We stay in the trenches with you through every growth stage.

  • Performance audits and database query optimisation at scale
  • A/B testing on pricing, onboarding, and upgrade flows
  • Automated dunning and failed payment recovery workflows
  • Customer health scoring and churn prediction dashboards
  • Feature flagging for controlled rollouts to user segments
Growth Dashboard
94%Retention
£52KARR
3.2xLTV/CAC
6+
SaaS Platforms Built
99.9%
Uptime Guaranteed
8wk
Avg. MVP Delivery
340%
Avg. Traffic Growth
99.99%
Client Satisfaction

Six phases from concept to scale.

Every SaaS engagement follows our battle-tested methodology — no shortcuts, no surprises.

01
Discovery

Business model analysis, competitive landscape, technical feasibility.

02
Architecture

System design, data modelling, API specification, infrastructure plan.

03
UX/UI Design

Wireframes, prototypes, design system, usability testing.

04
Sprint Build

2-week sprints, continuous integration, automated testing.

05
Launch

Staging review, performance audit, zero-downtime deployment.

06
Grow

Analytics review, conversion optimisation, feature iteration.

Architecture Before Code

The decisions that are expensive to reverse.

A handful of choices made in the first fortnight determine whether your platform scales or gets rewritten. Almost none of them are about which framework you use, which is the decision teams spend the most time on.

Tenancy. Shared schema with a tenant column, schema per tenant, or database per tenant? Each has real consequences for cost, isolation, migration pain and what you can promise an enterprise buyer during security review. Retrofitting the wrong choice is close to a rewrite, and it is the mistake we most often get called in to unpick.

Identity and permissions. Roles look simple until the first customer asks for a user who can see two projects but edit only one. Building a real permissions model early costs a week; adding one to a live product costs months and touches every endpoint you have written.

Billing. Where subscription state lives, what happens on failed payment, how upgrades prorate, and whether usage is metered. Billing bugs are uniquely damaging because they are simultaneously a revenue problem and a trust problem.

Our guide, SaaS architecture for startups, covers this in full — and if you have not built one before, it is worth reading before you brief anybody, including us.

Expensive to reverseWeek 1–2
DecisionChange later
Tenancy modelNear-rewrite
Identity & permissionsMonths
Billing stateWeeks + risk
Data modelMigration
UI frameworkDays
Hosting providerDays
Get the top four right. The rest is meant to be replaceable.

Cost follows the stage you are at.

The mistake we see most often is over-building at the first stage and under-building at the second. Indicative bands and timeframes are published on our MVP and product build page.

MVP

One workflow, done properly, in front of real users fast. Architected so the parts that are expensive to change are right, and everything else is deliberately disposable.

Production platform

Multi-tenancy, real permissions, billing, integrations, monitoring and the operational tooling you need once customers depend on it.

Scale & enterprise

SSO, audit logging, data residency, SLAs and the security posture enterprise procurement demands. Usually triggered by a deal you cannot close without it.

Architecture first, then speed.

The first fortnight is spent on decisions that are expensive to reverse. Everything after that is designed to be replaceable.

01
Discovery

The workflow that delivers the value, the users, and what has to be true for the product to work at all.

02
Architecture

Tenancy, identity, permissions and billing. The four decisions that are ruinous to change later.

03
Foundation

Repository, environments, CI, monitoring and deployment. Boring, and skipping it costs more than building it.

04
Core build

The one workflow, done properly, in front of real users as early as it can survive contact with them.

05
Iterate

Sprint cycles against real usage. Your first version is a hypothesis and it is usually partly wrong.

06
Scale

Multi-tenancy hardening, performance, SSO, audit logging and the security posture enterprise buyers require.

Are We a Fit?

Where we help, and where we do not.

Platform engineering is expensive and slow to reverse, so it is worth being blunt about fit before anyone commits.

You are probably a good fit if:

  • You have validated demand — customers, a waiting list, a manual process people already pay for — and need it built properly.
  • You have a technical decision-maker, or you want us to be it, and that is agreed rather than ambiguous.
  • You understand this is a continuing investment. A live platform needs engineering indefinitely; it does not reach a finished state.
  • You want to own the code and the infrastructure, with no dependency on us to keep operating.

We are probably the wrong choice if:

  • You are pre-validation. If nobody has paid or committed, build the cheapest possible test first. A no-code prototype or a manual service costs a fraction and answers the question faster.
  • You need it in six weeks for a fixed low price. Something will be sacrificed, and it will be the architecture — which is the part that is ruinous to fix later.
  • You want us to be your CTO permanently. We build and hand over. If you need a long-term technical leader, hire one; we will happily work alongside them.
  • Equity instead of fees. We are a studio, not an investor.

If you are pre-validation, say so. We will tell you what we would build to test the idea cheaply, even though it is not work we would be doing.

Good fit Clear commercial goal A decision-maker Values maintainability Wants the builders
× Not a fit Lowest price wins Approval by committee Needs on-site presence Below minimum scope

Common questions about building SaaS with us.

It depends on the stage: a focused MVP, a production platform with multi-tenancy and billing, or an enterprise build with compliance and complex integrations. We publish indicative bands and timeframes for each on our MVP and product build page, and you get a detailed breakdown after discovery so there are no surprises.
Our typical MVP timeline is 8–12 weeks from kickoff to launch. This includes discovery, UX/UI design, development, testing, and deployment. The exact timeline depends on feature scope — we work with you to define the smallest viable product that can generate real revenue and real feedback.
We choose the right tools for each project. Our core SaaS stack includes React or Next.js on the frontend, Node.js or Laravel on the backend, PostgreSQL or MySQL for data, Redis for caching and queues, and AWS or Vercel for infrastructure. We also work with Python, Django, and serverless architectures when they fit.
Yes — Stripe integration is a core part of every SaaS project we deliver. This includes subscription management, usage-based billing, free trials, plan upgrades/downgrades, proration, invoicing, dunning for failed payments, and webhook handling. We also support PayPal, GoCardless, and other payment providers.
Absolutely. We regularly inherit existing SaaS codebases and improve them — whether that means refactoring for performance, adding new features, migrating infrastructure, or rebuilding the frontend while keeping the backend intact. We start with a technical audit to understand what you have and recommend the most efficient path forward.
Yes. Every SaaS client gets access to our ongoing support plans, which include infrastructure monitoring, security patches, performance optimisation, bug fixes, and feature development. Most SaaS clients work with us on a retainer basis for continuous iteration — the product is never "done."
An MVP, almost always — but the phrase is badly understood. It does not mean a low-quality version of everything; it means a high-quality version of one thing. The failure mode we see is a founder building thin implementations of twelve features, none of which is good enough for anyone to rely on. Pick the one workflow that delivers the value, build it properly, and deliberately fake or defer everything around it.
Some survives, some is thrown away, and knowing which in advance is most of the skill. Data model, tenancy and auth are built to last from day one because they are ruinous to change later. Interfaces, workflows and integrations are built to be replaced, because they will be — your first version is a hypothesis about what users want, and it is usually partly wrong.
Yes, and we are comfortable in either role: leading architecture while your team implements, or taking a defined workstream while your team owns the core. What we insist on is a single technical decision-maker. Two teams with equal authority and different opinions on architecture produces a codebase with both approaches half-implemented, which is worse than either.
Encryption in transit and at rest, secrets never in the repository, dependency scanning in CI, least-privilege access, structured audit logging, and tested backups. For SOC 2 or ISO 27001 we build to the technical controls and work alongside your compliance provider — we are engineers, not auditors, and we will not pretend the certification itself is something we deliver.
Most clients move to a monthly retainer sized to the roadmap, or engage us at £900 per day for defined pieces of work. Budget realistically: a live platform needs continuing investment in dependency updates, infrastructure, monitoring and the operational tooling nobody scopes at the start. Products that stop receiving engineering attention do not stay still, they degrade.
Repository access with full history, infrastructure-as-code or documented environment setup, architecture notes covering the decisions that are not evident from the code, runbooks for the operational tasks, and a recorded walkthrough. The test is simple: another competent engineering team should be able to take over without needing to speak to us. If they cannot, we have not finished.

Let's build your next growth engine.

Every great digital product starts with a conversation. Tell us what you're building — we'll show you how to get there faster. Free discovery call. No commitment.

JC BU MS
65+ projects delivered since 2012