Custom software & SaaS development

Business platform, internal tool or SaaS product: we design and build your custom solution, delivered in 3 to 5 weeks thanks to AI-accelerated development.

Fixed price locked in at signature, mockups validated before the first line of code.

Discuss my projectSee our projects

50+

projects delivered

3–5

weeks to a V1

dedicated project manager, A to Z

Fixed price

Quote locked in before coding starts

The problem : You have a clear idea or already an AI-built MVP? You're looking for a team to turn it into a solid, market-ready product, without starting from scratch or waiting 6 months?

Result : Together we build a high-performing product that earns the trust of your customers and investors.

Recognize yourself in one of these situations? Let's talk about it together!

Talk to one of our experts

Building a tool that's both high-performing and truly suited to your needs doesn't happen by improvising. Most tech projects fail not because of the code, but because of a poor method.

We've listed the 4 most common mistakes to help you make the right calls, from idea to design of your SaaS.

Discuss my V1 with an expert

Still tracking everything by hand and juggling 3 tools that don't talk to each other? Your clients can't follow their own files? Custom SaaS software would make you look far more professional!

What is business software?

Software built for a specific function of your business: a dashboard to steer your activity, a back-office to run your operations, a portal for your clients or partners.

Why is it essential?

So you stop juggling poorly connected tools or forcing a generic tool to do things it was never designed for. Your teams save time because the tool follows exactly the way they work, not the other way around.

How do we go about it?

We start from your real processes: we observe how your team works, identify the friction points and client feedback, and design the interface around those concrete uses, while making sure we only build what your users will actually use. No useless development, we focus on what matters.

Worried your software's structure won't keep up the day you go from 10 to 100 clients? To support your growth, move to multi-tenant SaaS.

What is multi-tenant SaaS?

A technical architecture that lets multiple clients use the same platform, each with their own data, users and access, without anything mixing. It's the technical foundation of any SaaS product that wants to serve more than one client.

Why is it essential?

You don't start from scratch with every new client. The structure is built to absorb growth from day one: 10 clients or 10,000, the architecture doesn't change, only the infrastructure scales. You avoid the classic situation where everything has to be rebuilt after the first 50 clients.

How do we go about it?

From the V1, we set up the foundations that matter: data isolation between accounts, roles and permissions, billing and subscription management, API access if you need it. These are architecture choices we make upfront, because fixing them after launch costs far more than getting them right at the start.

Your teams spend 2 hours on a task that should take 5 minutes? We design internal tools tailored to your needs and your organisation.

What is a back-office?

A tool used exclusively by your teams internally, not by your clients. It replaces shared Excel files, manual follow-up emails and Notion boards that quickly become unmanageable as the team grows.

Why is it essential?

Fewer data-entry errors, less time lost looking for the right version of a file, fewer repetitive tasks. Your teams focus on high-value work and gain productivity.

How do we go about it?

The real problem is often an organisation that hasn't been rethought. So we come directly to your offices, alongside your teams, to observe and analyse your habits and ways of working. By identifying what blocks before coding, we solve real problems instead of digitising inefficient processes. It's the guarantee of the best-fit tool, so intuitive your teams can adopt it without needing training!

You re-enter the same information into 3 different tools, fingers crossed there's no mistake? We centralise everything in one place to make your teams' life easier and secure your data.

What are connectors?

Connecting your existing tools to each other: CRM, ERP, payment platform, logistics tool, emailing, so information entered once flows automatically everywhere it's expected.

Why is it essential?

So you no longer re-enter the same data in 3 different tools, with the risk of errors and inconsistency that implies. Your teams no longer feel like they're juggling 10 tools that don't talk to each other: the information flows without them having to manage it.

How do we go about it?

We first audit the tools you use and their connection capabilities (existing API, webhooks, limitations). Then we build the necessary bridges, sometimes via existing connectors, sometimes via custom development if needed.

From the first idea to production, a clear method where you stay in control
at every step.

Scoping
1 week or more
Together we define the exact scope of your V1. We challenge your ideas, advise you and prioritise what truly matters. Whether it takes 2 meetings or a full month, we adapt to your pace and reassure you when needed.
What's in it for you?You only invest in the features you actually need and you clarify your vision before spending a single euro on development.
UI design
From week 1 to 2
To save time, we design the interfaces and the application logic at the same time. Mockups are validated with you as we go, to avoid any bad surprise at delivery.
What's in it for you?You get a concrete view of your future tool within the first days and validate the user experience before any real coding.
Development
From week 2 to 5
We move forward in 2-week sprints with regular demos. Thanks to our weekly meetings, you follow your project's progress in real time. Your product comes to life and you can already demo it to your own clients to validate every choice.
What's in it for you?Total transparency. You keep constant control over your product and can adjust anything if needed.
Go live
Week 5
This is D-day: secure deployment and guided onboarding for your teams. We hand over the entire project: the intellectual property and the code belong to you from day one.
What's in it for you?A ready-to-use tool, autonomous teams and total independence.

Meet our team of engineers and project managers

From the first idea to production, a clear method where you stay in control
at every step.

W1W2W3W4W5W6

Scoping

1 week or more

Together we define the exact scope of your V1. We challenge your ideas, advise you and prioritise what truly matters. Whether it takes 2 meetings or a full month, we adapt to your pace and reassure you when needed.

What's in it for you?You only invest in the features you actually need and you clarify your vision before spending a single euro on development.

Meet our team of engineers and project managers

We ship fast: V1 in 3 to 5 weeks, not 6 months

We accelerate development with AI: generating the code base and rapid prototyping, so our engineers can focus on architecture, business logic and product quality.

We define a strict scope before writing any code

Because a good tool is a useful tool, we challenge your organisation, your processes and your ideas before designing a single line of code. Our philosophy? Fewer superfluous features, only the right ones: those that validate the product in the field, ease adoption and avoid wasting budget.

We offer clear, controlled pricing (fixed-price or time & materials)

For your V1 launch, we favour a fixed price: the quote is set from signature to spare you any bad surprises at the end of a sprint. You know exactly what you're paying. And if your project needs maximum flexibility or extra hands, we adapt with a time-and-materials option (daily rate). Always keeping control over your investment.

We guarantee full sovereignty and independence

Unlike the traps of No-Code solutions, where subscription bills climb exponentially as your app gains users, we made the opposite choice. From go-live, we transfer the intellectual property of your product to you. We build on standardised, open-source and recognised tech stacks to guarantee full sovereignty.

We secure your project with top-tier engineers

Unlike the market of junior freelancers or limited No-code, we prefer engineering rigour. Your tools are built by engineers trained at top schools, ensuring clean, documented, secure code designed to follow your growth. The day your software goes from 10 to 10,000 users, it stays stable, smooth and fast!

Building a custom CRM to make advisors' daily work easier: less time on data entry, more time for clients.

Context: Sève Finance, financial investment brokers, tracked their clients, KYC files and sales opportunities across Excel, Word, Google Forms and email. The result of this scattered setup: hours lost on manual entry, duplicates everywhere and no overall view of the portfolio.
Challenge: Centralise data scattered across 4 tools without adding to advisors' daily workload, while respecting industry constraints, to create a single secure space for each client.
What we did: A custom CRM that brings everything together in one place: automatic company-record prefill via the French SIREN registry, one-click document generation, and real-time dashboards on opportunities and revenue (pending, potential, closed).
Result: Each advisor saves 4 hours a week on document production, -70% manual entry at onboarding, and a single tool replacing more than four. Advisors re-type less and spend more time with their clients.

See how to free up your teams' time

See all our projects

The most common questions we get, seen from our clients' side.

Yes, it's a frequent case. We start with a technical audit of the existing code to assess what's reusable. We give you an honest opinion before committing to anything.

Before you launch a custom piece of software or SaaS, you probably need to know our pricing to budget your project. To avoid unpleasant surprises, and because we chose transparency, here are our different pricing tiers and budget envelopes:

For turnkey projects

Designed for companies that want to launch a new product or transform an existing one quickly, with a budget under control from A to Z.

Build your MVP (in 3 weeks)starting at €3k
Turn your MVP into a sellable V1starting at €8k
Build a custom applicationstarting at €7k
Automate with AI (existing product)starting at €2k

Also available: internal tools (from €3k), websites (from €2k), technical migrations (from €2k).

Get a free estimate

OUR SERVICES

Wanting to build everything in V1

We lock in a strict V1 scope

Picking the tech before defining the need

We choose the tech based on the project

Waiting for 100% locked mockups before coding

We design and code in parallel

Ignoring maintenance and future evolutions