Understack
Let’s talk about a project

You sell the web project. We build it.

White label web development, exclusively for agencies. We join your team, work with your processes and stay behind the scenes.

Let’s talk about a project See how we build

GET /en/ 200 templates/page-home.php

Initial JavaScript
3.6 KB gzip
Render-blocking requests
0
Active plugins
3
Page builders
0

Measured on this page

We work with

  • HTTP/2

The agency stays in front. We stay behind.

Your agency keeps the client relationship, the account and the strategy. Design can stay with your team or we can do it in Figma; development, integrations, QA, deployment and maintenance are ours.

  1. Inside your team

    We work like an in-house resource: your tools, your processes, your timelines. We don’t ask your agency to adapt to us.

  2. Behind your brand

    We can operate fully white-label. In calls, documents and deliverables, the end client sees your agency.

  3. Your client stays yours

    We never approach our partners’ clients commercially. That’s the condition that makes everything else possible.

More development capacity. Without hiring. You scale production when you need to, with no recruiting and no onboarding for every peak.

What we build

Three areas. Not twenty services.

  • 01

    WordPress

    Custom themes where they make sense, and serious work on projects that already exist.

    • Custom themes
    • Timber and Twig
    • ACF
    • Gutenberg
    • WooCommerce
    • Elementor, when the project calls for it
    • Custom plugins
    • Integrations and APIs
    • Maintenance and iterations

  • 02

    Web Applications

    Custom applications and systems in PHP, where a CMS is no longer enough.

    • PHP
    • Laravel
    • Filament
    • Portals and dashboards
    • Internal tools
    • REST APIs
    • Custom systems

  • 03

    Development Partnership

    Ongoing development capacity, inside your agency’s workflow.

    • White-label development
    • Overflow development
    • Ongoing support
    • Maintenance
    • Iterations
    • Team augmentation
    • On-demand development capacity
All services

Custom first. Not custom only.

When we have technical freedom we prefer custom development: it gives control over the markup, predictable performance, long-term maintainability and an editing experience built for the project rather than adapted to a template. We are not dogmatic about it. If your agency already works with Elementor, Gutenberg, WooCommerce, an existing theme or a legacy stack, we adapt. Switching tools halfway through an established relationship almost always costs more than it returns. We pick the tool that makes sense for the project, not the one we happen to prefer.

This site is fully custom. It’s the choice we would have made for a project with the same constraints.

From template to browser.

Four files, in order. This is the path that produced the page you are reading.

  1. Frammento di codice: templates/page-home.php templates/page-home.php PHP 01 // The template holds no logic. 02 03 use Understack\View\Context; 04 05 Timber::render( 06 'pages/home.twig', 07 Context::forPage() 08 );
  2. Frammento di codice: src/View/Context.php src/View/Context.php PHP 01 // The single point between WordPress and the view. 02 03 public static function forPage(): array { 04 $context = self::base(); 05 $context['post'] = Timber::get_post(); 06 $context['fields'] = get_fields( $post->ID ); 07 08 return $context; 09 }
  3. Frammento di codice: views/pages/home.twig views/pages/home.twig Twig 01 {# Presentation. No queries, no logic. #} 02 03 <section class="section"> 04 <h2>{{ f.model.headline }}</h2> 05 06 {% for pillar in f.model.pillars %} 07 <h3>{{ pillar.title }}</h3> 08 {% endfor %} 09 </section>
  4. Frammento di codice: output output HTML 01 <!-- What the browser receives. --> 02 03 <section class="section"> 04 <h2>You sell it. We build it.</h2> 05 06 <h3>Inside your team</h3> 07 <h3>Behind your brand</h3> 08 <h3>Your client stays yours</h3> 09 </section>

How we work

No improvisation. No stray edits straight into live.

  1. Brief

    We receive design, specifications and constraints. If something is missing we ask before starting, not halfway through.

  2. Development

    Work happens in a controlled local environment, with Git and readable commits. Every change is tracked.

  3. Staging

    Everything goes through a test environment separate from production, with its own database and domain.

  4. Review

    Your agency reviews on staging and collects the end client’s feedback. Iteration happens there.

  5. Production

    Only the approved version reaches production, through a deliberate deploy. Never automatically.

Ways to work together

  1. Project

    A defined project with an agreed scope and delivery. The simplest way to start working together.

  2. Retainer

    Recurring development capacity, reserved every month. Useful when the workload is continuous but not predictable in detail.

  3. Dedicated Development

    We become a stable part of your agency’s technical team — in-house capacity you don’t have to hire.

The stack

  • WordPress

    • WordPress
    • Timber
    • Twig
    • ACF Pro
    • Gutenberg
    • WooCommerce
    • Elementor

  • Backend

    • PHP
    • Laravel
    • Filament
    • REST API

  • Frontend

    • Tailwind CSS
    • Vite
    • JavaScript
    • GSAP

  • Workflow

    • Git
    • GitHub
    • Composer
    • WP-CLI
    • Staging
    • CI/CD
See how we build

What this site does not load.

  • Page builders —
  • Multilingual plugins —
  • Form plugins —
  • jQuery 30 KB
  • Alpine.js 15 KB
  • theme.json global styles 7 KB

Frequently asked questions

  1. Do you work with end clients?
    No. Understack works exclusively with agencies, digital studios and professional partners.
  2. How long does it take to deliver a site?
    It depends on what has to be built, and we know precisely only after the brief: a five-page site and a custom back office with integrations do not share a timeline, and quoting one number for both is just a way of getting it wrong. What we can tell you straight away is that we reply within one working day with a technical assessment and an estimate, before you have to commit to your client.
  3. Do you work white-label?
    Yes. We can stay entirely invisible to the end client, in communication as well as in deliverables.
  4. Do you work with Elementor?
    Yes, when the project or your agency’s workflow calls for it. When we have technical freedom we prefer custom development.
  5. Is it only WordPress?
    No. We also work with PHP, Laravel, Filament, APIs and custom web applications.
  6. Can you work inside our workflow?
    Yes. We fit into the processes and tools your agency already uses: repositories, project management, environments, conventions.
  7. Can we hand you development only?
    That is exactly our model.