T-Matrix
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One team from brief to growth, in steps you can see.

Every project runs through the same five steps. You see working results every week, and you know what each step costs before it starts.

Start with a briefSee services

Five steps for every project

The steps are the same for a landing page and for an AI agent. Only their size changes.

  1. Step 1

    Discover

    One call and a written brief. We tell you what to build and what to skip.
  2. Step 2

    Design

    Clickable design in your brand, tested on real screens before code.
  3. Step 3

    Build

    A new version every week that you can open in the browser.
  4. Step 4

    Launch

    Legal pages, speed, accessibility and tracking checked before go-live.
  5. Step 5

    Grow

    SEO, content and automation once the site is live.

Pick the model that fits the job.

Prices are excl. VAT. After the first call you get a written quote for the model you choose.

  • Fixed price

    per project
    A clear scope, a fixed price and a date. Best for websites, shops, MVPs and audits.

  • Time and materials

    per hour
    You pay for the time we spend. Best when the scope will change as you learn.

  • Monthly retainer

    per month
    A fixed number of hours each month for support, SEO, content and small features.

  • Dedicated team

    per month
    Developers, designers or marketers who work only on your product, led by us.

  • Product subscription

    per month
    HyperSale and Stellwerk as SaaS, with onboarding and support included.

AI speeds up the work, people stay responsible.

We use AI in almost every step, and we are open about where. It is a big part of why our prices start where they do.

What AI does

  • Drafts code, tests and documentation
  • First versions of texts and translations
  • Research, summaries and checklists
  • Video, voice and music in Create orders

What people do

  • Decide what to build and talk to you
  • Review every line of code before release
  • Edit and approve every text and translation
  • Label AI-generated media and check consent

Your data only goes to AI services under business terms that exclude training on it. Personal data is masked before it reaches a cloud model. Passwords and keys never go into an AI tool.

Checked before it goes live.

  • Code review

    Every change is read by a second person before it is released.

  • Automated tests

    Tests run on every release, so fixes do not break what already works.

  • Accessibility

    We build to WCAG 2.2 AA and test with the keyboard and a screen reader.

  • GDPR by default

    Only the form fields you need, EU hosting where possible and a privacy page that lists every service.

  • AI Act ready

    Chatbots say they are AI, AI media is labelled, and we keep the records you need.

  • Keys and secrets

    Access keys are scoped per project and stored in the environment, never in code or chats.

Frequently asked questions

How fast can you start?
We reply to every request within one business day and agree the start date in the quote.
Do I own the code and the content?
As a rule, yes: the code, designs and content we make for you are handed over to you. The details are set in your contract.
Can you work with my existing team?
Yes. We can take over one part of the work, review your code or extend your team for a while.
Which languages do you build for?
All 24 official EU languages. AI drafts the translations, people check them before release.

Tell us what
to build.

Get a quote
kontakt@t-matrix.net

We reply within one business day.