SaaS & platforms
SaaS development that scales
A product that grows with your customers: multi-tenant, with subscriptions, payments and security that survives an audit. From first MVP to a running platform.
- 10,000+ daily active users at peak
- 100k+ in revenue on launch day
- ISO 27001-level security
- Fixed price, your code
In short
SaaS development means building a product that serves thousands of customers at once, not a single app for one company. We build the multi-tenant foundation, the billing with subscriptions and trials, and the security that survives an audit. You start as an MVP and grow into a running platform. The code and the IP are yours, at a price agreed up front.
What gets in the way
A SaaS is not a bigger website. It is a product that serves dozens or thousands of customers at the same time, each with their own data, their own settings and their own invoice. That asks for a different foundation: multi-tenant from day one, billing that handles subscriptions and trials, and security that survives an audit instead of being a formality. We have not done this once. Simply, our own recruitment SaaS, runs native inside Salesforce. Quantum Life served more than 10,000 people a day at peak. Gamechef is building a full game engine in the browser. Three products, three scales, one approach: a working MVP first, then build out, and you keep 100% ownership of the source code. We think along with you: we listen first to what you want to achieve now and where you are heading, then choose the technology to match, for the most scalable and powerful result that is cost-efficient at the same time.
An MVP that does not grow
Your first version works for ten customers and falls over at a hundred. One database, shared data, no separation between tenants. Starting over costs months. We lay the multi-tenant foundation right away, so growth is a switch and not a rebuild.
Billing you cobble together yourself
Subscriptions, trials, monthly and yearly plans, Apple and Google payments that have to stay in sync. Do this yourself and money leaks while access rights drift. We build the commercial layer the way Quantum Life has it: trials, entitlements and billing sync that holds up.
Security as an afterthought
Customer data, GDPR, an audit on the horizon. Bolting security on later does not work. At Simply it sits in the design: access through a dedicated VPN, strict 2FA and full logging at ISO 27001 level. Reno, our co-founder and security specialist, reviews it.
Vendor lock-in and open invoices
Many agencies hold your source code or keep billing until you cannot leave. With us the price is fixed up front and the code is fully yours. No surprises, no dependence on us to move forward.
What we build
How we help
Multi-tenant foundation with billing
One platform that serves many customers, with data cleanly separated per tenant. On top of that a billing layer with subscriptions, trials, monthly and yearly plans and entitlements, including Apple and Google payments that sync in real time.
Scales from MVP to product
You start small with a working first version and build out as customers come in. The foundation stays the same, only the scale changes, so growing is adding rather than rebuilding.
Native integrations, not an iframe
Sometimes your SaaS has to live inside your customer's software. We build a full, native integration that is genuinely part of that system, with the right permissions and authentication, instead of a limited iframe bolted on top.
Security by design
Security sits in the design, not stuck on afterwards. That means access through a dedicated VPN, strict 2FA and full logging at ISO 27001 level. Ready for an audit, ready for GDPR.
AI where it actually saves time
AI as an engine in your product, not a marketing coat of paint. We build AI in where it genuinely takes work off your hands: summarising documents and conversations, searching your data with source citations, or carrying out tasks on its own. Not a separate chatbot bolted on top, but functionality that lives in the product and provably saves time.
Your IP, your code
Everything we build is yours. The full source code is yours, the IP is yours, and the price is agreed up front. Want to develop it further yourself later, or bring in another party? You can, without being tied to us.
Proof
We have built this
Real projects we can name.
Simply
Recruitment SaaS
An AI recruitment suite, a native Salesforce app, a secure back-office and a marketing site. The full Simply stack, built end to end.
4-6 hrs/week
Recruiter time saved
Native Salesforce (Apex)
Integration
Quantum Life
Wellness / Meditation app
A cross-platform meditation app with a Quantum Movie creator, a class marketplace and a matching web portal.
10,000+ daily
Peak users
€100k+ revenue
Launch day
GameChef
Game development / AI SaaS
A browser-based, AI-powered game engine with a visual editor and code, art and sound tooling.
Days, not weeks
Build time
Code · Art · Sound
Channels
Our approach
From idea to working software in four phases
Every project runs through the same four phases, so you always know what's happening, what comes next and what it costs — from first call to live software, usually in weeks rather than months.
- 01 Phase 1 Free intake
Understand & analyse
Everything starts with a good conversation. We map your goals, processes and the bottlenecks worth solving — no sales pitch, just an honest read on where the biggest win sits.
- 02 Phase 2 Free blueprint
Blueprint & quote
We turn the analysis into a blueprint: a clear plan showing exactly which steps we'll take and why, paired with one fixed quote. You know up front precisely what we build, what it costs and when it's done — no open ends, no hourly billing, no surprises afterwards. And getting that blueprint is completely free, no obligation.
- 03 Phase 3 Prototype in days
Build, test & deploy
Then we build, in short iterations. You see a working prototype in days and a finished product in weeks. We work on a modern, AI-native and secure stack — with data protection and GDPR in mind from day one.
- 04 Phase 4 100% your code
Implement & optimise
We launch, hand over the full codebase and keep improving on your terms. You get 100% ownership of the code we write — no lock-in, no licensing games. Hosting and maintenance are optional, never required.
What you always get
Fixed price
Agreed up front, never an open end.
100% code ownership
Your code, fully yours, no lock-in.
Live in weeks
Prototypes in days, finished in weeks.
Modern & secure
A scalable stack that always integrates with the latest tech. Secured by our in-house cybersecurity experts.
Tools & tech
We build on the technology that fits you best. Already working with a certain stack — whether that's .NET, PHP or something else — we simply build on it. Starting fresh? We draw on years of experience to pick the technology that's strongest for your situation. No forced migrations, no tech for tech's sake.
What you get
- Multi-tenant architecture with data separated per customer
- Billing layer: subscriptions, trials, monthly and yearly plans, entitlements
- Payment integrations and Apple/Google billing sync
- Native integrations and connections with your existing systems
- Security by design: VPN access, 2FA, full logging at ISO 27001 level
- AI functionality that provably saves time
- A back office where your team manages customers without a developer
- 100% ownership of the full source code, IP yours
Our promise
Your software stays yours
- Full code ownership The full source code is and stays yours, documented and ready to hand over.
- No vendor lock-in Stop working with us and your system keeps running. Any developer can pick it up.
- Fixed price up front You get a no-obligation blueprint and quote up front: no open-ended billing and no surprises afterwards.
- Security in every layer We build security-by-design, with a specialist in-house.
Frequently asked questions
What is the difference between SaaS and a custom application?
A custom application is software for one company: your process, your people. A SaaS is a product that serves many customers at once, each with their own data, settings and invoice. That difference sits in the foundation: a SaaS is multi-tenant, has a billing layer with subscriptions and has to scale to thousands of users. Not sure which way to go? We think it through up front, because you only get to set the foundation right once.
How do multi-tenant and billing work in practice?
Multi-tenant means one platform serves many customers, with data cleanly separated so customer A can never reach customer B's records. On top of that comes billing: subscriptions, trials, monthly and yearly plans, and entitlements that decide who can do what. Quantum Life runs this with Apple and Google payments that sync in real time, so access rights and invoices always match.
Can my SaaS scale when things take off?
Yes, as long as the foundation is right. Quantum Life grew to more than 10,000 daily active users at peak without a rebuild, because the multi-tenant architecture was there from day one. Scaling then became a question of capacity, not of starting over. That is why we invest early in the foundation: it is cheaper than redoing everything later.
What about security, ISO and GDPR?
Security sits in the design, not stuck on afterwards. Simply's back office runs at ISO 27001 level: access through a dedicated VPN, strict 2FA and full logging of who does what. Reno, our co-founder and security specialist, reviews it. Customer data and GDPR obligations we handle from the first line of code, not once the audit is at the door.
Who owns the IP and the source code?
You do. Everything we build is fully yours and so is the IP. No vendor lock-in, no source code we hold back. Want to develop it further yourself later, or bring in another party? You can, without being tied to us. And we agree the price up front, so there is no open invoice.
Can I start small as an MVP and build out later?
That is exactly our approach. You start with a working first version that actually does something, and build out as customers come in. That is how we did it with Simply, which grew from an idea into a full stack with SimplyAi, a Salesforce app, a back office and an outbound engine. We lay the foundation right away, so building out is adding, not rebuilding.
Ready to build?
Book a no-obligation call — we'd love to think through the best approach with you.
Book a call