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SaaS Development | Perth + remote

Build your SaaS product, hardened by senior engineers

Custom SaaS development for founders and operators who need a multi tenant subscription product built securely and ready for real customers. We use AI assisted development for speed, then treat its output as a first draft that gets senior review, explicit tenant isolation, tested authentication and verified billing. Building an internal tool for your own team instead? That is App Development.

Best fit
External subscription products with multiple customer accounts
Main deliverable
A tested product in your repository and infrastructure
Client input
Product decisions, plan rules, sample data and acceptance criteria
Commercial model
Fixed scope and price before code is written
Delivery ownership
  1. Scope
  2. Connect
  3. Test
  4. Handover

The accountable team maps the workflow, connects the systems, tests the failure paths and records the handover. Platform access and ownership stay visible throughout.

Who it is for

For people turning an idea into a subscription product

A SaaS product is something external customers sign up to, log into and pay for. That is a different delivery problem from an internal application.

Founders, agencies and operators come with a new idea, a productised service or an internal tool customers keep asking to buy. The moment external customers and their data enter the product, strict data separation between customers, billing, authentication and administration all become core architecture rather than optional polish.

Delivery feedback

A client view of the work

This feedback covers how we scope and deliver. It is not a case study for SaaS Development.
They actually listened to what we needed, didn't overcomplicate things, and delivered something our team could use straight away. Genuinely one of the best tech experiences I've had as a business owner.
Natasja KleinmanFounder, Flexi TribeRead the full client feedback

Product scope

Hosting, monitoring and operational scale are designed with AI Infrastructure from the start.

The parts of a SaaS that have to be done right

Tenant isolation

We isolate each account's data strictly, so one customer can never access another customer's records.

Authentication and SSO

We handle sign up, login, recovery, social authentication and SSO where appropriate, with secure session handling.

Stripe subscriptions and billing

We build plans, trials, upgrades, downgrades, proration, failed payments and invoices, all verified on the server.

Roles and permissions

We set up owners, administrators and members whose permissions control what they can do in the product, rather than only what they can see.

Admin dashboards

We build a support and operations dashboard for accounts, subscriptions, reporting and authorised troubleshooting.

Public API and webhooks

We provide a documented API and webhooks, the automatic notifications that tell other systems when something happens, so customers can connect their own tools.
If this is the workflow causing trouble, send us the handoff and systems involved. We will tell you whether it is worth changing before anything is scoped.

Safety

Vibe coded for speed, reviewed for safety

AI accelerates the first draft. A senior engineer reviews the implementation before customers use it, with particular attention to tenant filters, access checks, payment webhooks, secrets and dependencies.

Authentication, tenant isolation and payment flows are tested explicitly. Privacy Act obligations and relevant Essential Eight mitigations inform the design. An existing product can start with a Vibe Code Audit, while ongoing hardening belongs in AI Security.

Process

Scope, build, harden, launch and support

Where autonomous coding agents suit the product, Agentic Coding can support the build under senior direction.

  1. Scope

    Scope it first

    Agree the product, customers, data, plan tiers, fixed scope and commercial terms before code.
  2. Build

    Build fast with AI

    AI assisted delivery creates multi tenancy, authentication, billing and core features, while a senior engineer reviews the architecture, security and each release.
  3. Harden

    Review and harden

    Senior engineering review and targeted testing cover tenant isolation, authentication and billing.
  4. Launch

    Launch to customers

    Deploy hosting and monitoring, then move real sign ups, payments and data into production.
  5. Support

    Support and grow

    The proposal records the initial support window. Ongoing support and further product work are available under a separate arrangement.

Commercial expectations

The product boundary is agreed before the build

The proposal records the product scope, milestones, acceptance criteria, payment stages, handover and initial support window.
Included when scoped

Product delivery

The agreed application, testing, deployment, documentation and handover are included when listed in the proposal.
Separate unless stated

Operating costs and further work

Hosting, model usage, payment fees, licences, ongoing support and later features remain separate unless the proposal includes them.

Practical details

Questions about SaaS Development

Access, platform fit, handover and control boundaries in plain language.

Pricing is on application because SaaS scope varies enormously. Multi tenancy, authentication, billing, SSO, public APIs, plan tiers and permissions materially change the work. We agree a fixed scope and figure in writing before any code is written, so the proposal rather than a generic website range is the commercial source of truth.

Start with the product

Scope the customer product before the build

Fixed scope and commercial terms are agreed before any code. For how we assess a platform's data and privacy posture, read the SaaS review case study.Enquiries get a reply within one business day.