SaaS Development · Shopify Native

Build the product. Not just another app shell

Multi-tenant SaaS products for Shopify merchants and the wider commerce ecosystem. We design and ship subscription platforms, B2B tools and marketplace-ready products with auth, billing, tenancy and observability built in — so you can sell, scale and retain without re-architecting after the first hundred customers.

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SaaS products shipped
40+
by design
Multi-tenant
from day one
Billing-ready

48-hour audit

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Send your product brief or existing stack. We reply with a recorded walkthrough: tenancy model, billing gaps, security risks and five high-impact architecture actions ranked by scale and revenue impact. No pitch, no obligation.

  • A recorded walkthrough, sent to your inbox
  • Priorities ranked by impact
  • No pitch, no obligation
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Trusted by 250+ brands across the US, UK, UAE & Europe

01 / CAPABILITIES

Sixteen ways we design and ship multi-tenant SaaS products.

From tenancy and billing to Shopify apps, onboarding, ops consoles and observability. Products built to sell, scale and retain.

01

Multi-tenant architecture

Tenant isolation at data and API layer, shared infrastructure and clear boundaries so one customer never sees another’s data.

02

Billing & subscriptions

Plans, trials, upgrades, proration and dunning via Stripe, Shopify Billing or similar — wired into entitlements from day one.

03

Auth, roles & permissions

SSO, invite flows, org roles and fine-grained permissions so teams can work safely inside each tenant.

04

Shopify App Store products

Public and custom apps with Admin API, Billing API, webhooks and review-ready compliance for the App Store.

05

Onboarding & activation

Guided setup, empty states and first-value moments so new tenants reach aha before they churn.

06

Usage metering & limits

Feature and usage limits tied to plans so you can offer free tiers without unlimited cost or abuse.

07

Admin & ops console

Internal tools for support, billing overrides, audit logs and tenant health so your team can operate the product.

08

APIs & webhooks for partners

Public or partner APIs with clear contracts so integrators and power users can extend the product.

09

Observability & SLOs

Metrics, logs, traces and tenant-aware alerting so you know health per customer and overall platform.

10

Data model & migrations

Schema design for multi-tenancy, safe migrations and export paths so data stays yours and portable.

11

Security & compliance basics

Encryption, audit logs, least-privilege access and clear data handling practices ready for customer diligence.

12

Marketplace & multi-seller

Seller onboarding, payouts and catalogue models when the product is a marketplace or multi-vendor platform.

13

Legacy to multi-tenant

Migrate single-tenant or fragile apps onto a proper multi-tenant architecture without losing customers.

14

Product analytics

Activation, retention and revenue events so you know which features drive paid growth.

15

International & multi-currency

Localisation, tax and multi-currency billing when your SaaS sells across regions from day one.

16

Post-launch product retainers

Ongoing roadmap, incident ownership and feature sprints so the product keeps improving after launch.

02 / PROCESS

How a SaaS development engagement runs.

Every engagement follows the same four stages. You always know what is happening next and how success is measured at each milestone.

  1. Stage 1

    Product & architecture discovery

    We clarify ICP, pricing model, tenancy needs and success metrics, then lock the architecture: isolation model, billing, auth and first-release scope.

  2. Stage 2

    Design system & core flows

    Tenant onboarding, plan selection, core product flows and admin surfaces are designed so activation and support are possible from day one.

  3. Stage 3

    Build, harden & launch

    Sprint-based development with tenancy tests, billing integration, observability and a launch path that can take real paying customers.

  4. Stage 4

    Measure, iterate & scale

    Activation and retention metrics in place. We refine based on real usage and offer retainers for roadmap, incidents and growth features.

03 / OUR WORK

Recent work from our portfolio.

Live stores, apps and platforms we have built and run. Case studies open on this site; other projects open the live build in a new tab.

View all work

40+

SaaS products shipped

multi-tenant platforms, Shopify apps and subscription products

Multi-tenant

By design

isolation and shared infrastructure from the first release

Billing-ready

From day one

plans, trials and entitlements wired into the core product

100%

Owned handovers

repos, credentials, schemas and runbooks on every engagement

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Live site: Phoenix40: Radiation Safety Training Platform

04 / PRICING

Transparent pricing. Pick the model that fits your SaaS goals.

Fixed-scope SaaS projects, ongoing product retainers, or full-time dedicated pods. Whatever the engagement, you’ll see the price before you sign: no hourly creep, no surprise change orders.

Project

Fixed-scope SaaS project

$25K – $150K

Fixed timeline · Milestone-billed

Best for: New multi-tenant products, Shopify apps, billing and tenancy rebuilds

  • Fixed SOW & architecture
  • Tenancy, billing & auth in scope
  • Docs, ops console & handover
  • Easy off-ramp, full ownership

Retainer

Monthly product partnership

$5K – $18K / mo

30–70 hrs/month · Month-to-month

Best for: Roadmap after launch, incident ownership, feature sprints and growth work

  • Dedicated SaaS / product lead
  • SLO ownership & alerts
  • Prioritised backlog from real usage
  • Unused hours roll 50% forward

Dedicated team

Full-time product pod

$12K – $32K / mo

1–3 specialists · Embedded with your team

Best for: Continuous SaaS development, multi-product programmes, high growth

  • Senior SaaS specialists full-time
  • Direct Slack & weekly standups
  • Reports to your product / eng lead
  • Signed SLA & continuous shipping

05 / WHY BRANDS STAY

Six reasons founders stay with us for SaaS development.

Most of our product work is repeat business or referral. These are the reasons clients give when we ask why.

Multi-tenant by design

Isolation, shared infrastructure and entitlements designed up front — not bolted on after the first growth spike.

Shopify-native depth

We build Shopify apps and commerce-adjacent SaaS daily — Admin API, Billing API and App Store requirements included.

A dedicated lead on every project

One accountable owner, clear weekly updates, no account-manager telephone game.

Billing and ops from day one

Plans, entitlements and internal tools ship with the product so you can sell and support without engineering every request.

Transparent, fixed-scope pricing

Written scope and a fixed number before work starts. No surprise line items or hourly creep.

You own the product

Full repository access, credentials, schemas and runbooks. We stay because the work is good, not because exit is hard.

06 / TECH STACK

What we use for SaaS development.

Modern TypeScript and Python services, multi-tenant data models, Stripe or Shopify Billing, and observability from the first commit — never a single-tenant shell that cannot scale.

Application stack

  • Node / TypeScript
  • Python
  • Remix / Next.js
  • Nest
  • Postgres
  • Redis

Billing & identity

  • Stripe
  • Shopify Billing API
  • OAuth
  • SSO
  • RBAC

Shopify & commerce

  • Admin API
  • App Bridge
  • webhooks
  • Shopify App Store requirements

Ops & quality

  • Docker
  • CI/CD
  • OpenAPI
  • contract tests
  • metrics
  • tracing
  • SLOs

07 / FAQ

Questions we hear before every SaaS engagement.

Honest answers, including the ones most agencies dodge.

Get a free SaaS architecture review
How long does a typical SaaS build take?

Focused multi-tenant MVPs often run 12–20 weeks. Full products with billing, ops and App Store readiness usually take 16–28 weeks. Timeline is fixed in the SOW before work starts.

Do you only build Shopify apps?

No. We build general multi-tenant SaaS and Shopify App Store products. When commerce is central we lean on Shopify APIs and Billing; otherwise we use Stripe and standard SaaS patterns.

Can you fix an existing single-tenant product?

Yes. We assess tenancy, billing and security gaps and can migrate to a multi-tenant architecture without losing existing customers, often in phases.

What does a typical engagement cost?

Projects: $25K–$150K. Monthly retainers: $5K–$18K/mo. Dedicated team: $12K–$32K/mo. Every quote is fixed-fee and locked in the SOW.

How do you handle billing and plans?

We integrate Stripe or Shopify Billing early, model plans and entitlements in the core data layer and wire upgrade, proration and dunning so revenue is not an afterthought.

Do you support the product after launch?

Yes. Retainers cover roadmap, incidents, feature sprints and growth work. Most clients keep a product retainer after the initial launch.