From an idea to a SaaS platform your customers rely on

We build SaaS platforms and digital products with the people who will run them, from the first working version through multi-tenancy, billing and scale. It runs in your own AWS account, and you are never locked in.
The problem

Getting to a first version is the easy part. Getting to a platform people pay for is the work.

Plenty of SaaS products never make it past the demo that impressed everyone in the room. The demo handles one user and one happy path. The platform has to keep a hundred customers' data properly apart, get billing right every month, cope with people signing up at three in the morning, and carry a support load that only grows.

That gap is where the real decisions live, and it is where software built only to look good in a pitch tends to fall over.

Building the product

In SaaS platform development the software is the business. Multi-tenancy, billing, onboarding and the unglamorous reliability underneath them are what decide whether the product scales or stalls once real customers arrive.

Owning the product

You are commissioning an asset. The IP, the code and the infrastructure are yours from the first day, so the value you build up stays with your business rather than sitting inside someone else's account.

How we work

We build the smallest real thing first, then grow it with you.

  1. 01

    Prove

    We take the idea to a minimum viable product that real people can actually use, not a prototype that only survives a controlled demo. Enough to put in front of customers and find out what they will pay for, before the big money goes in.

  2. 02

    Build the platform

    Then the parts that turn an app into a product other businesses trust with their data: multi-tenancy that keeps each customer isolated, billing and subscriptions, onboarding, roles and permissions. This is the work that decides whether the product holds up under load.

  3. 03

    Run and grow

    We stay. Scaling as customers arrive, billing automation, reporting, new media types and features the roadmap keeps generating. In most of our engagements the people running the platform years after launch are still us.

What's included

What the work covers, in more detail.

  1. 01

    From an idea to a working MVP

    We start with the workflow, not the wireframe: event storming and story mapping with the people who understand the market, then the smallest version worth shipping. Often that means turning a proprietary process, sometimes one buried in a complex spreadsheet, into software real customers can log into and use.

  2. 02

    Multi-tenancy and data isolation

    Keeping each customer's data properly separate is the difference between a product businesses will trust and one they will not. We design tenancy, roles and permissions in from the start. On Duwio, every subscriber gets an isolated workspace with its own secure area for gallery delivery.

  3. 03

    Billing, subscriptions and onboarding

    The commercial plumbing that has to be right every month: subscription logic, payments through a gateway such as Stripe, invoicing that can integrate with accountancy software like Xero or Sage, and sign-up and onboarding flows that get a new customer to value without a phone call.

  4. 04

    Scaling, hosting and running it in production

    Serverless functions and containers on AWS, global content delivery through CloudFront, automated backups and continuous monitoring. Duwio runs a containerised stack on Amazon ECS with RDS, S3 and CloudFront, Lambda for background jobs, and AWS Backup and CloudTrail underneath. We build it, and we keep it running.

  5. 05

    A product built to be owned and grown

    It all runs in your own AWS account, and you hold a copy of the platform, the code, the infrastructure and the pipeline. We build for the long term, so most of our SaaS clients keep us developing and running the product for years, adding billing automation, reporting and new capabilities as the customer base grows. There is no lock-in in that: you can take it elsewhere at any point.

“We're so confident in Duwio that we made Spacesuit the ultimate test case. We've moved our entire archive of 600,000 high-res images from our legacy platform into a Duwio workspace. Duwio really is a better way to manage images.”
Ross Ringham, Managing Director & Duwio Founder, Spacesuit Media
Questions

The things founders ask us first.

  • Do you take equity, or is this a normal paid engagement?

    Usually a normal paid engagement. But we build long-term relationships and we are open to sharing the risk in the right cases, whether that is an equity stake or a share of the recurring revenue. When everyone is invested in the product succeeding, the outcome tends to be stronger.

  • Will we be locked in?

    No. Everything runs in your own AWS account and you hold a copy of all of it, including the infrastructure definitions and the deployment pipeline. You can take it elsewhere whenever you want, and an engagement that only holds together because leaving is painful is not one we want.

  • Can you just build the MVP and hand it over?

    We can, and the code and infrastructure are yours to take whenever you want them. But we are set up for the long haul, and most of our SaaS clients keep us running and growing the platform for years, because the interesting problems arrive after launch rather than before it.

  • Will it scale when the customers actually arrive?

    That is what the Well-Architected review at the start is for. Duwio was built to grow, and Spacesuit Media proved it by moving their entire archive of 600,000 high-resolution images onto the platform, which now serves brands including Nissan and Envision Racing.

Work we have done for businesses like yours

Golf course
Insurance platform rebuild Published 2026

Rubber Ring

Rubber Ring's digital insurance business had outgrown its original platform.

Discover how we rebuilt it on a modern, event-sourced architecture on AWS - a single-table DynamoDB source of truth streamed into a PostgreSQL read model, with containerised React Router 7 and PHP applications on ECS Fargate - and migrated the entire live book in one cutover.

Rubber Ring logo
Read more: Rubber Ring
Duwio workspace interface
Cloud-native SaaS platform Published 2025

Duwio

Working with Spacesuit Media, we transformed years of experience in image delivery into Duwio - a new SaaS platform for creative professionals, re-engineered from the ground up on AWS.

Built on an AWS well-architected foundation, it enables photographers and agencies to store, tag, search and deliver images seamlessly from anywhere in the world.

Read more: Duwio
GT World racing cars in motion
React Native mobile app Published 2025

SRO Motorsports Group

Si Novi partnered with Whiteflame and SRO Motorsports Group to build a new GT World app, replacing a Europe-only version with one that covers every SRO championship worldwide.

It brings together live video, timing, schedules, team data and race reminders each fan can tune to the series they follow, on a single React Native codebase over a serverless AWS backend.

Read more: SRO Motorsports Group
A package-holiday beach with sun loungers at golden hour
Serverless API rebuild Published 2025

Distribute

Distribute serves package-holiday data to a range of downstream partners through a business-critical API.

Discover how we rebuilt that API as a modern, serverless service on AWS - introducing a clean HTTP/JSON interface while keeping every existing consumer working through a zero-downtime migration.

Distribute logo
Read more: Distribute
Jaguar Land Rover tooling and equipment
Distribution web platform Published 2024

Jaguar Land Rover

Discover how Si Novi partnered with Jaguar Land Rover to build a scalable, secure AWS-powered web application for global tooling distribution.

Learn about the innovative solution, including recent enhancements for electric vehicle tooling, that supports 13 languages and over 40 regions worldwide.

Read more: Jaguar Land Rover
All case studies