🔌 Custom Modules

Custom Magento 2 Extension Development

When an off-the-shelf extension does not fit, or you have five overlapping modules doing one job, a custom Magento 2 module is often cheaper to run. We build focused, upgrade-safe extensions using plugins, service contracts and declarative schema, with frontends for both Hyvä and Luma.

0Core files
modified
PHP 8.4Strict types
throughout
Hyväand Luma
frontends
TestsUnit and
integration

Built for Your Business, Maintained Like a Product

Marketplace extensions are built for thousands of stores, so they carry options and code you will never use. A custom module does one job the way your business works, with less code to load, test and upgrade.

We build modules the way Adobe recommends: dependency injection through constructors, plugins instead of class rewrites, service contracts and repositories for data, declarative schema and data patches for the database, and ACL-protected admin pages. Templates escape all output with $escaper, and frontends are delivered as Hyvä templates with Alpine.js, Luma templates, or both.

Every module is delivered to your repository with a README, configuration notes and automated checks, so your team or any other developer can maintain it.

PHP 8.4Magento 2.4.9PluginsObserversService contractsDeclarative schemaGraphQLRESTUI componentsHyvä
Typical custom modules
  • ✓Pricing — Customer-specific pricing, surcharges and complex promotions
  • ✓Catalogue — Product configurators, bundles and custom attributes
  • ✓Checkout — Custom fields, delivery rules and order validation
  • ✓Admin — Grids, forms, reports and bulk actions for your team
  • ✓Integration — APIs, webhooks and queue consumers for other systems
  • ✓Automation — Cron jobs, imports, exports and notifications

Extension Development Services

New modules, refactoring of existing ones and fixes to third-party code.

🛠️

New Custom Modules

Requirements, technical design, development, tests and documentation for a new module.

  • ✓Technical specification
  • ✓Admin configuration
  • ✓Composer package
🔄

Extension Customisation

Change how a third-party extension behaves using plugins and preferences, without editing vendor code.

  • ✓Upgrade-safe changes
  • ✓Vendor patches where needed
  • ✓Documented overrides
🧱

Hyvä Frontends

Hyvä-compatible templates and Alpine.js components for new and existing modules.

  • ✓ViewModels
  • ✓Alpine.js components
  • ✓Tailwind styling
🔗

API & Integration Modules

REST and GraphQL endpoints, webhooks and message queue consumers for integrations.

  • ✓webapi.xml and ACL
  • ✓GraphQL schema
  • ✓Async processing
🧰

Admin Tools

Admin grids, forms, mass actions and reports built with UI components.

  • ✓UI component grids
  • ✓Role-based access
  • ✓CSV exports
🧹

Refactoring & Rescue

Clean up legacy modules: remove core rewrites, add types, fix performance and prepare for upgrades.

  • ✓PHPStan baseline
  • ✓Deprecated API removal
  • ✓Performance fixes

What Good Magento Code Looks Like

Our modules follow the Magento coding standard (magento/magento-coding-standard) and pass PHPStan at a level agreed with you. Classes use constructor property promotion and readonly properties, controllers implement HttpGetActionInterface or HttpPostActionInterface instead of extending the deprecated base action class, and database changes use db_schema.xml with a generated whitelist.

We prefer plugins on public methods over preferences, keep observers small, and put business logic in services that are easy to unit-test. Configuration is read through typed config classes, and every admin route is protected by an ACL resource.

You can see this style in our module, plugin and REST API tutorials.

Modules We Have Built

Pricing and checkout rules. Surcharges by payment method, minimum order values by customer group, delivery date selection with cut-off times and bank holidays, and validation rules that stop orders the warehouse cannot fulfil.

Catalogue tools. Product feed generators for Google Shopping and other channels, scheduled CSV and XML product imports with attribute mapping, and brand pages with SEO-friendly URLs.

Operational fixes. Plugins that fix third-party module bugs without editing vendor code, such as strict-typing errors under PHP 8.x that crash cron jobs or sitemap generation.

Integrations. Order export to ERPs and 3PLs through message queues, stock and price imports, and webhooks for marketing platforms — all with logging and retries so failures are visible.

Extensions You Will Not Regret Later

The cost of a module is mostly in maintaining it. We write code that keeps that cost low.

📏

Standards and static analysis

PHP_CodeSniffer with the Magento standard and PHPStan run on every change.

🧪

Tested

Unit tests for business logic and integration tests for database and API behaviour where it matters.

⬆️

Upgrade-safe

No core edits, no unnecessary preferences, and compatibility checked against the latest Magento release.

📄

Documented

README, configuration guide and changelog, so knowledge does not live in one developer's head.

Technology We Work With

PHP 8.4ComposerPHPUnitPHPStanPHP_CodeSnifferMFTF / PlaywrightGraphQLRabbitMQHyväGit

From Requirement to Released Module

Small modules take days; complex ones are delivered in sprints.

Requirements

We capture business rules, edge cases and acceptance criteria.

Technical design

Extension points, data model, APIs and frontend approach agreed before coding.

Development

Module built with tests and static analysis in your repository.

Review and QA

Code review, functional testing on staging and your acceptance testing.

Release and support

Deployment, documentation and optional maintenance for future Magento versions.

Frequently Asked Questions

Buy when a well-maintained extension covers most of your needs. Build when your process is specific, when you would need several extensions combined, or when performance and maintainability matter more than a quick start.
You do. Custom modules are delivered to your repository with intellectual property assigned to you.
Yes. We build Hyvä frontends by default for Hyvä stores and can provide Luma templates as well.
Yes, using plugins, preferences or patches, so vendor updates can still be installed.
We can prepare modules for Marketplace submission, including packaging, documentation and the technical review requirements.

Hyvä Compatibility Modules

Make third-party extensions work on Hyvä.

Learn more

ERP & System Integration

Integration modules for ERP, PIM and CRM.

Learn more

Our Magento 2 Extensions

Ready-made modules for feeds, imports and brands.

Learn more

What Should Your Module Do?

Describe the feature, your Magento version and theme. We will suggest whether to build, buy or customise, and estimate the work.

Phone / WhatsApp

+91 79767 89212

Response Time

Within one business day, Mon–Fri

Discuss a Custom Extension

No obligation. We reply within one business day.

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