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Custom development

Building something from scratch is just the beginning. The real 'game' starts, as soon as you start to scale and grow beyond your comfort zone. We can help you achieve your goals!

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Bud "King of Beers"

Supporting the migration of the data for one of the worlds largest companies in the world, together with one of the AWS lead architects.

Creating an AI dashboard in React for internal and operational use.

Their restaurants and loyal customers were connected by our hyper-personalised custom development

Building and designing a Python based dealer platform for all EU car dealers.

Consulting on a strategy to parallel real-life marketing in the virtual environment and elaborated on creating a virtual reality store

A NodeJS middleware application, connecting the e-commerce store to ERP and fulfilment applications.

Strategic partnership with Deloitte to go to the next phase of the internet

A custom bottle configurator and webshop to launch a national campaign at scale.

Animation and motion design for a populair women fashion brand in Europe.

The Dutch e-learning election platform to educate the staff all over the country.

We don’t take no for an answer or walk in quietly

We defy the rules and amaze. We are your end-to-end production and begin where every other agency stops. Custom development is at the core of our business, meaning every single one of our teams is full-stack and ready to adjust to your needs.

Shapes forming abstract art


We don’t just build with the newest & fastest techniques, we build use the right technique to fit your company.

  • 01Web (App)
  • 02Software (SAAS)
  • 03Enterprise applications
  • 04Dashboards
  • 05Connectors
  • 06PWA

Free brainstorming session?

We are always excited to be challenged or help you with that next mind-blowing idea you might have.

    Andy working on his laptop in the Flatline HQ in Amsterdam and smiling


    What is the impact of the programming language and technical architecture?

    Development languages

    There are many development languages out there, and all of them have their pros and cons. However, choosing the ‘wrong’ language can result in delays, higher costs, impossibilities, a complete rebuild, or even have the project failing as a whole. Therefore, it is essential to not only state your current desire but also elaborate on your future plans / vision. If an agency always sticks to ‘one favorite language’, it is highly likely they don’t operate in your best interest. Whenever the agency goes a bit deeper, elaborate on the characteristics, and let you ultimately decide – you can confidently say the first red flag has turned green.

    Technical architecture

    Besides simply choosing the ‘right’ language, it is also important to think about the architecture. The architecture states if it can scale, how stability will be assured, and many other relevant variables. Any agency should first draw out a proper architecture and be able to thoroughly elaborate on this. This is simply because this will be the core principle of potential success (or failure).

    A fixed timeline and price is always best right?

    Of course, the cost

    The cost is always an important factor while finding the right match with an agency. And of course, it is very nice to know exactly beforehand what the exact costs are. But, let me ask you this: “do you exactly know what your product will look like?”. Exactly, of course, you don’t.

    Therefore, every process – which is free of form – needs flexibility built-in. Meaning that, for example, a range of hours or an indication based on user stories means that the agency knows that they need to be flexible.

    Timeline – how long would it take?

    Similar to the price, a timeline can also differ whenever the project changes. However, sometimes you just need to assure a certain deadline. Therefore, an agency should always take into account a certain % for an unpredicted delay (a third-party API not working for example). Besides, if the timeline is fixed the agency should state beforehand that extra resources can be dedicated whenever extra hours are necessary. Any other way, this would not be realistic.

    This is broadly known as one of the most common mistakes within the development, ruining momentum and delaying product launches off many companies. So be aware, and definitely, be realistic instead of optimistic.