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Custom SaaS Development

Custom SaaS Development

SaaS built around your domain rather than a template, including the tenancy, workflow and billing models a starter kit cannot express.

45+
Platforms Built
Scope Review First
To Launch
clear
Code Ownership
Domain
Domain Modelling
Cloud software dashboard interface on a display
Overview

When a SaaS boilerplate stops being enough

Starter kits are excellent at the parts every SaaS shares: sign-up, a subscription, a settings page. They fall over at the part that makes your product worth buying, because that part is domain-specific by definition and no template can anticipate it.

Custom SaaS development is what happens when the hierarchy is not simply organisations and users, when billing depends on something your industry measures, or when the core workflow has approval chains, versioning and audit requirements a generic CRUD scaffold cannot express.

We still avoid inventing what already exists. Auth, payments and infrastructure use proven components. The custom work goes where it earns its scope: the domain model and the workflow.

Teams that start here often pair it with SaaS development, CRM development and API integration.

Templates handle the ten percent every SaaS shares. The ninety percent that makes yours worth buying is exactly what they cannot help with.

Engineering team collaborating at a desk
The Problem

Where template-based SaaS builds break down

Four points at which a starter kit stops paying for itself.

Rigid Tenant Hierarchy

Real customers have divisions, franchises or client accounts, and a flat organisation-and-user model cannot represent them.

Billing That Does Not Fit

Commercial setup depends on something your industry measures, and the template supports seats and nothing else.

Workflow Complexity

Approvals, versioning, delegation and audit trails do not exist in a CRUD scaffold and end up bolted on inconsistently.

Compliance Requirements

Residency, retention and audit obligations touch every layer and cannot be added as a feature after launch.

What's Included

What a custom SaaS engagement covers

Domain where it matters, proven components everywhere else.

Domain Modelling

Time with your subject experts to model the real hierarchy, states and rules rather than forcing them into a generic shape.

Custom Tenancy

A hierarchy that matches how customers are actually organised, with isolation enforced in the data layer.

Commercial setup Engine

Billing that expresses your commercial model, whether that is seats, usage, tiers, contracts or a combination.

Workflow Engine

State machines for approvals and versioning, with an audit trail that satisfies whoever asks for one.

Integration Layer

Connections to the systems your customers already run, because a SaaS that does not integrate does not get adopted.

Compliance Foundations

Residency, retention, encryption and audit designed in rather than retrofitted before a deal.

Our Process

From domain workshop to launched platform

Model the domain properly, then build fast on top of it.

01
Domain Workshop

Sessions with your experts mapping the hierarchy, states, rules and exceptions that the product must express.

02
Architecture

Tenancy, commercial setup and workflow models designed against that domain, with the growth path documented.

03
Foundations

Auth, tenancy, billing and audit shipped first, since the custom product sits on top of them.

04
Product Build

Fortnightly usable increments demonstrated to the people who will sell and support the product.

05
Launch

Load testing, security review and a staged rollout with monitoring and rollback.

Tech Stack

The stack behind our custom platforms

Proven components underneath, custom logic on top.

01
Application

A typed codebase with clear domain boundaries, so complex rules stay readable.

02
Data

Relational modelling with row-level security, event history where auditability demands it.

03
Commerce

A commercial setup engine in your own domain language, reconciled with the payment provider.

StripeCustom MeteringContractsProration
04
Operations

Your cloud, automated delivery, monitored backups with rehearsed restores.

In The Field

What this looks like in production

Logistics · Multi-Level Client Platform

A tenancy model no template could express

A logistics platform sold to freight forwarders, who in turn served their own clients, who had branches. Three levels of hierarchy, with data visibility rules that differed at each, and billing charged to the forwarder based on branch-level activity.

Their first build used a standard SaaS starter with organisations and users. Every one of those requirements had been approximated with special-case code, and support was fielding visibility complaints weekly.

We remodelled tenancy as an explicit hierarchy with visibility rules expressed as data rather than conditionals, and moved billing onto a metering engine that aggregated up the tree. Support tickets about visibility stopped.

3 levels
Of tenant hierarchy
0
Visibility tickets after launch
12 weeks
Remodel to launch
Why Tech Team 4U

What a custom SaaS development company should model first

We build custom exactly where your domain is genuinely different, and use proven components for everything that is not. That balance is what keeps a custom platform affordable.

Domain-First Modelling

We model your actual hierarchy and rules before writing features, because a wrong domain model makes every later requirement a fight.

Weekly Transparency

A working demo and a written note every Friday covering what shipped, what slipped and what it means for the date. No status theatre.

Staged, Not Risky

Nothing goes live in one jump. We run in parallel or behind a flag until the numbers say it is safe to switch over.

45+
Platforms Built
10+
Years Engineering
Scope Review First
To Launch
clear
Code Ownership