Services · SaaS development
SaaS development company for founders and product teams who need to ship and scale
We design and build software-as-a-service products end to end: multi-tenant architecture, subscription billing, roles and permissions, onboarding, admin tools and the infrastructure to run them, delivered by a senior team that has shipped SaaS in legal, healthcare, marketing and AI.
Short answer
SaaS development means building a product many customers use from one codebase, with each customer's data isolated, billed by subscription or usage, and updated continuously. Innovation Insight builds SaaS MVPs from $15k to $45k in 8 to 14 weeks and full multi-role SaaS platforms from $50k to $150k or more in four to eight months, on Next.js, Node or Python and AWS, Azure or GCP.
Reviewed by Zain Khalid Malik, CTO & Co-founder · Updated
What makes SaaS different from a normal web app
A SaaS product is a web application with a business model built into the architecture. Every customer (a tenant) shares the same code but must never see another tenant's data. Customers sign up, pay and change plans without talking to you. Features are switched on by plan. Usage has to be measured, invoices issued and failed payments chased. And you deploy several times a week without downtime, because every customer is on the same version. Getting these foundations right early is far cheaper than retrofitting them after the first hundred customers.
The SaaS foundations we build
| Foundation | What it covers | Our usual approach |
|---|---|---|
| Multi-tenancy | Data isolation between customers | Tenant ID on every row with enforced filters, or a database per tenant for regulated or enterprise customers |
| Authentication and SSO | Sign-up, login, teams, invitations | Auth0, Clerk, Cognito or custom, with SAML and OIDC SSO for enterprise plans |
| Roles and permissions | Who can do what inside each account | Role-based access with per-plan feature flags |
| Billing | Plans, trials, usage, invoices, dunning | Stripe Billing or Paddle, with webhooks reconciled to your own records |
| Onboarding | First-run experience and activation | Guided setup, sample data, in-app checklists, lifecycle emails |
| Admin console | Your team's view of customers | Impersonation with audit, plan overrides, usage and health metrics |
| Observability | Knowing when things break | Error tracking, logs, uptime, per-tenant usage dashboards |
| Delivery | Shipping safely and often | CI/CD, preview environments, feature flags, automated tests, zero-downtime migrations |
SaaS products we have shipped
- EdgeOCR: a multi-tenant AI document processing platform on AWS Lambda with Redis queues, a MongoDB database per organisation and four Stripe plans with usage-based billing.
- GovDoc AI: a multi-tenant SaaS that reads government RFPs, SOWs and contracts with a RAG pipeline on AWS Bedrock.
- TamTracker: a B2B market intelligence SaaS with nine third-party data integrations.
- Solas: a funeral management SaaS that replaced spreadsheets and paper forms for funeral directors.
- Autoviz: a 3D and AR wheel configurator sold as SaaS to aftermarket automotive brands.
Each of these is written up in our case studies with the architecture, stack and delivery approach.
What it costs
| Stage | Scope | Range | Timeline |
|---|---|---|---|
| Discovery and design sprint | User flows, data model, architecture, clickable prototype, fixed estimate | $3k to $8k | 1 to 2 weeks |
| SaaS MVP | Core workflow, sign-up, one or two roles, Stripe subscriptions, admin basics | $15k to $45k | 8 to 14 weeks |
| Full SaaS platform | Multiple roles, SSO, usage billing, integrations, analytics, admin console | $50k to $150k+ | 4 to 8 months |
| Ongoing product team | Dedicated engineers shipping your roadmap | From $4,000 per engineer per month | Monthly |
Most founders start with discovery, launch an MVP to real customers, then move to a dedicated team once they know which features customers pay for.
Technology choices
We default to a TypeScript stack (Next.js front end, Node or NestJS API, PostgreSQL) because one language across the product keeps a small team fast, and we use Python where the product is data- or AI-heavy. Infrastructure is on AWS, Azure or GCP with infrastructure as code, so the environment can be rebuilt and audited. We avoid exotic choices that make hiring hard later: your product should be easy for the next engineer to pick up, whether that is ours or yours.
How we work
- Discovery: problem, users, pricing model, the one workflow the MVP must nail, and the architecture decisions that are hard to change later.
- Design: UX flows and a UI kit in Figma, tested with five or more target users before development.
- Build in two-week sprints with a demo every sprint and a staging environment you can use.
- Launch: production hardening, monitoring, security review, and support for your first customers.
- Grow: a dedicated team or a retainer, prioritised with you from usage data and customer feedback.
Sources and further reading
Next step
Tell us what you're building and get a written estimate.
A senior engineer replies within one business day. NDA on request.
Products we've shipped, and what happened next.
Case studies written from the technical documentation of each project: the stack, the scale and the outcome.
Questions we get asked a lot.
Do you build SaaS MVPs for non-technical founders?
Yes. Many of our SaaS clients are founders without an in-house CTO. We act as the technical team, explain trade-offs in plain language and hand over full code ownership and documentation.
Who owns the code?
You do. Intellectual property is assigned to you in the contract and the repositories live in your GitHub or GitLab organisation from day one.
Can you take over an existing SaaS product?
Yes. We start with a two-week code and infrastructure audit, fix the riskiest issues first and then continue feature work.
How do you handle subscription billing?
Usually Stripe Billing, occasionally Paddle when you want a merchant of record for global tax. We keep a copy of billing state in your database and reconcile it with webhooks so access always matches what customers paid for.
Can the SaaS meet enterprise requirements like SSO and SOC 2?
Yes. We add SAML and OIDC single sign-on, audit logs and the change-management and access controls SOC 2 auditors ask for, and can help you prepare evidence.
How long until we have paying customers?
A focused SaaS MVP is typically ready for its first customers in 8 to 14 weeks from the end of discovery.