Software development
Multi-tenant, privacy by design, export-ready for the EU Data Act. For founders and companies with a product idea.
Updated November 2026
You’ll talk to the engineer who will build your project.
We work exclusively with businesses and self-employed professionals. All offers exclude VAT.
We build your SaaS product from the first analysis to operations. That includes tenant isolation (each customer sees only its own data), roles and permissions, and subscription billing. You also get data export in open formats and hosting in your own cloud account. After a discovery sprint, we build your MVP, the first sellable version, at a fixed price.
Your MVP should be as small as possible and stable enough for paying customers. You get the code, accounts and documentation in a form your own team can take over later. If the software is for your own processes and not for sale to other companies, custom business software is the better fit.
Our guide What is SaaS? explains what makes a product SaaS and how an idea becomes an MVP.
Before you commission a provider, ask each one the same 12 questions for choosing a software developer.
Datafalke is based in Bottrop, Germany.
Software development overviewAll servicesTarget users, the core feature, user flows, a clickable prototype and the architecture, then a fixed price for the MVP.
The first sellable version of your software, with weekly demos and repository access from day one. Estimate: 8–12 weeks.
Multiple customer companies in one app, cleanly separated, each with its own users and permissions.
Subscription billing through a payment provider of your choice, with roles for your customers and for your team.
Export of your customers’ data in common, machine-readable formats, so they can switch providers.
Hosting in your own cloud account with a provider of your choice, preferably EU-based, plus software care with updates and monitoring.
We use one of three basic models, which we choose with you in the discovery sprint. The options are shared tables with a customer ID on every row, a separate database for each customer or a separate deployment for each customer. As a rule, the stronger the isolation, the higher the cost and effort per customer.
| Model | How the data is separated | Cost and operations | A good fit when |
|---|---|---|---|
| Shared tables | Every row carries the ID of the customer it belongs to. The app filters every query by that ID, and row-level security policies in the database can add a second safeguard. | Lowest cost per customer, with a single database to back up and update. Restoring one customer’s data from a backup takes extra work. | You have many customers with similar requirements |
| Separate database per customer | Each customer’s data sits in its own database, while all customers share the app. | Higher cost per customer. Every change to the data model has to roll out to all databases automatically. | Customers require their own encryption keys, their own backup rules or a specific storage location |
| Separate deployment per customer | Each customer gets its own environment, and nothing is shared. | Costs grow with every customer, and updates and reporting across all customers take more work. | You have a few large customers with strict requirements |
Source: Microsoft, Azure Architecture Center (external site),
Mixed models are common: most customers share a database, while some pay extra for their own. AWS’s architecture guidance (external site) calls the shared model pool, the separate model silo and the mixed model bridge.
In every model, one customer must never be able to see another customer’s data. If someone can retrieve another customer’s records by changing an ID in a request, access control is broken. This class of vulnerability ranks first in the OWASP Top 10:2025 (external site).
Our explainer What is a multi-tenant SaaS architecture? covers how the models differ and when each one pays off.
SaaS development starts with a conversation, by video or in person at your office if you’re in the Ruhr area of Germany. It’s free, and you talk directly to the engineer who will build your product.
We define your target users and core feature, map the user flows and build a clickable prototype you can show to potential customers. We also decide on the architecture, the data model and the tenancy model.
We work in short cycles and show you where things stand every week. The code is in your repository from the start.
You review the MVP against the criteria we agreed on in writing. At sign-off, you receive the documentation and the software bill of materials.
After that, if you’d like, we keep looking after the software and develop it further as planned. Your team or another provider can also take over.
We built, ran or documented these examples for our articles. The PostgreSQL example uses test data rather than client data.
All examples come from our own project or from test data. None of them comes from client work.
You can carry on without us if you need to. Code, hosting account and domain are under your control from day one, and every sign-off includes documentation another team can work from.
Repository, cloud account, domain and credentials are in your name. We work with delegated access.
Architecture docs (arc42, C4), decision records, an operations manual and a software bill of materials (SBOM) come with every sign-off.
If we part ways, we hand over all documentation to your team or new provider. Your contract sets out how the handover works.
We use widely adopted open-source frameworks, not homegrown tools only we understand.
Mohammad Alboush is a software engineer and the owner of Datafalke. He’s your direct line to the team, from the intro call to sign-off. He replies to requests within one business day (Monday to Friday).
If your project is a fit, you’ll get a price range or a recommended first step after the free intro call. The discovery sprint is a paid entry offer with its own deliverable; we tell you its price before you order and quote the fixed price for your MVP after the sprint.
Founders and companies with a product idea
Price in your quote
Excl. VAT, business clients only
Founders and companies with a SaaS idea
Fixed price after discovery
Excl. VAT, business clients only
Software care S covers updates, monitoring and two hours of work a month, for at least three months. Software care L is by agreement. Changes outside the fixed price start only once you approve them.
We work exclusively with businesses and self-employed professionals. All offers exclude VAT.
For SaaS MVP development, we quote the fixed price after the discovery sprint. The price depends mainly on the number of roles and core features, the integrations, the billing model and the tenant isolation model. An MVP stays small when it delivers one core feature to one group of users; we plan everything else for later releases. Our cost guide How much does it cost to build a SaaS product? gives market prices in euros and worked examples.
The repository is in your account from day one. The exclusive usage rights to the code we write for you pass to you on full payment. Open-source components keep their own licenses.
In your own cloud account, with a provider of your choice, preferably EU-based and under a data processing agreement (DPA). We set up the account with you and work in it with delegated access.
Then we change the plan, but never silently. New requests go into a prioritized backlog. What they cost in time or money is set out in a change request before we start work on them.
No. We use widely adopted open-source frameworks instead of homegrown tools, and every SaaS MVP includes data export. Your code and accounts are under your control from the start, and every sign-off includes documentation. So you can carry on at any time with your own team or a different one. Our colophon shows the technology we use ourselves.
Grants are rare. For digitalization projects, there are loans from the German development bank KfW (external site) (in German). They’re open to companies based in Germany and to German subsidiaries or branches of foreign companies. Companies subject to tax in Germany can claim the research allowance (external site) (Forschungszulage, in German) for genuine R&D, but routine software development doesn’t qualify. Of Germany’s state programs, we’ve only reviewed those in North Rhine-Westphalia, and we haven’t looked at programs in other countries. As of November 2026.
Yes, if you’d like. We build it with SEO and generative engine optimization (GEO), so Google and AI assistants can read what you offer and describe it accurately.
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