Scalable architecture
Multi-tenant SaaS architecture with isolated tenant data, per-plan limits and a single deployment serving all customers — designed so capacity can grow with your usage.
Software / SaaS
SaaS development company for custom products, MVPs & AI features
We design and build custom SaaS products end-to-end — authentication, multi-tenant architecture, subscription billing, admin dashboards and the infrastructure underneath. A small senior team, fixed-bid quotes and a working build every week.
What we build
Custom SaaS development services, end to end
SaaS products are deceptively complex — user management, billing, permissions, dashboards and integrations all have to work together. We help you decide what to build first and what to skip. We also build internal tools that replace manual workflows.
- SaaS product development from scratch
- Multi-tenant SaaS architecture & user management
- Authentication, roles & permissions
- Subscription billing & payment integration (Stripe)
- Admin dashboards, analytics & usage tracking
- Hosting, CI/CD & infrastructure setup
- Custom internal tools & workflow automation
- Migrating an existing tool onto a new stack (scoped case by case)
Capabilities
The hard parts of SaaS, handled
These are the systems that shape how a SaaS product grows. We plan them carefully at the start, because they are the costliest to change later.
Billing & subscriptions
Stripe Subscriptions integration, plan tiers, trials, upgrades and invoicing, with webhooks that keep plan access in sync. Usage-based metering and failed-payment handling can be discussed per project.
Dashboards & analytics
Admin dashboards, role-based access, usage tracking and product analytics so you can see who uses what and make decisions on real data.
Infrastructure & delivery
Deployment, CI/CD, monitoring and error tracking so releases are repeatable. Where it fits your product, we can also add LLM-powered features on top.
Our process
From idea to live product in five stages
A predictable, milestone-based path. Every stage has a clear deliverable so you always know where the product stands and what comes next.
01 · Discovery
We pin down the problem, the users and the one metric that matters. You leave with a scoped feature list, a milestone plan and a fixed-bid quote — before any code is written.
02 · Architecture
We design the data model, multi-tenant strategy, auth, billing and where AI fits. Getting tenancy and data isolation right here avoids costly rework later.
03 · First release
We build the core flows, billing and a clean UI with a working build every week, so you can review real progress and adjust priorities along the way.
04 · Launch
We deploy to production with CI/CD, monitoring and error tracking, and hand over access so you own the product and its infrastructure.
05 · Iterate
After launch we can keep improving the product from usage data, add integrations and tune infrastructure as traffic grows — on a retainer or sprint cadence that fits your roadmap.
Use cases
What founders and teams hire us to build
A few of the SaaS shapes we can build. If yours is not here, tell us and we will say honestly whether it fits.
B2B SaaS platforms
Multi-tenant products where companies sign up, invite their teams and pay per seat or per usage — with role-based access and an admin console.
Startup first versions
The first version of a new idea, kept to a tight scope and built on a codebase you can keep extending.
AI-powered SaaS
Products with an LLM feature at the core, or AI features added to an existing platform. We are an AI-first team, so this is a natural fit.
Internal tools & dashboards
Software that replaces spreadsheets and manual processes — operations consoles, reporting dashboards and workflow automation built around how your team actually works.
Engagement models
Ways to work with us
Pick the shape that fits where your product is today.
Fixed-scope build
A defined product or MVP delivered against a fixed milestone plan and estimate. Clear deliverables and a fixed-bid quote — ideal when the scope is well understood and you want certainty.
Monthly retainer
A continuous-iteration relationship for live products. We ship improvements, add features and look after the infrastructure on an ongoing cadence.
Hand-off
The finished product handed over with documentation if you have your own developers. If you need extra hands on an existing team, we can discuss what is possible.
Tech stack
Our typical SaaS stack
Widely used tools for each layer of a SaaS product. We pick the right tool per layer rather than forcing one framework on every problem.
FAQ
SaaS development questions, answered
How much does custom SaaS development cost?
It depends on scope. A product with a small set of core flows costs less than a multi-tenant platform with billing, role-based access and integrations. We give a fixed-bid quote with a milestone plan before any code is written, so you know what you are paying for. Email contact@matrixinnsolutions.com with your idea and we reply within one business day.
How long does it take to build a SaaS product?
Timelines depend on scope, mainly on how many core flows the product has. We give a milestone plan with the fixed-bid quote, and you get a working build every week so you can see progress and adjust priorities as we go.
What is multi-tenant SaaS architecture and do I need it?
Multi-tenant means one codebase and one deployment serves many customers (tenants), with each tenant's data isolated and secured. It is a common model for B2B SaaS because it keeps hosting costs low and lets you ship one update to everyone at once. We plan tenancy, data isolation and per-plan limits early, because they are much harder to change later.
Can you add AI features to my SaaS product?
Yes. We are an AI-first team and can add LLM-powered features such as chat, summarisation or classification, or retrieval over your own data, to a SaaS product. We treat them as part of the architecture, with scoped prompts, evaluation and cost controls in mind.
Do you build the billing and subscription side too?
Yes. We can integrate Stripe Subscriptions for plan tiers, trials, upgrades and invoicing, and wire up webhooks so plan changes are reflected in the product. If you need usage-based metering or failed-payment handling, we can discuss what fits your model.
What happens after launch — do you keep maintaining it?
That is up to you. We can continue on a retainer for ongoing iteration, or hand the product over with documentation if you have your own developers. Either way we can discuss monitoring and infrastructure as usage grows.
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Let's scope your SaaS product
Tell us what you are building. We will come back with a scoped plan, a fixed-bid quote with milestones and a clear first step — whether that is a first version, a multi-tenant platform or a feature on an existing product.