Custom Magento Extension Development

Custom Magento extensions built to your business logic

When the off-the-shelf module almost fits, we build the one that fits exactly. Custom Magento and Adobe Commerce extensions engineered around your workflow, upgrade-safe and unit-tested by senior US developers.

14yrs
Building Magento modules
300+
Custom modules shipped
100%
Upgrade-safe, no core hacks
How We Build Modules

How Our Magento Extension Development Fits The Last Ten Percent

A custom Magento module does one thing well: exactly what your store needs, with nothing extra. Here is how we move it from idea to tested code.

Product manager and developer mapping module requirements together Engineers whiteboarding a module architecture in a planning session Two developers pair programming a Magento extension QA engineer and developer reviewing automated test results Team reviewing a release and documentation before handoff Built to Adobe standards
01 · REQUIREMENTS

Map the business logic first

We sit with the people who use the feature, capture the real rules and edge cases, and define exactly what the module must, and must not, do. No guessing later.

02 · ARCHITECTURE

Design around public APIs

We build on dependency injection, plugins, and service contracts, never a core rewrite. Clean boundaries let it sit alongside your other extensions without a fight.

03 · BUILD

Code to Adobe standards

Every line passes PHP_CodeSniffer and PHPStan, follows the Magento 2 standard, and reads like the core does. The next developer, ours or yours, can pick it up cold.

04 · TEST

Prove it with real tests

Unit and integration tests cover the logic and the edge cases, running in CI on every change. You get green builds, not a promise that it works.

05 · RELEASE

Ship documented and versioned

Composer package, semantic version, changelog, and a clear user guide. Deploy with confidence and roll back in seconds if you ever need to.

What We Build

Custom Magento Extension Development, End To End

From a single private module to a marketplace-ready product. Tap a panel to explore.

Developers building a custom business-logic module together
01

Custom Business-Logic Modules

Private extensions that encode your exact pricing, checkout, fulfillment, or admin workflow. Built for your store, not the average one.

Team preparing a marketplace-ready extension for review
02

Marketplace-Ready Extensions

Packaged, documented modules built to Adobe Commerce Marketplace requirements, through MEQP review to publish.

Engineers auditing and fixing a third-party module
03

Module Fixes & Audits

We audit third-party extensions, resolve conflicts, patch security gaps, and untangle the code that's fighting your core.

Developers designing an API integration module on a screen
04

API & Integration Modules

Modules that connect Magento to your ERP, CRM, payment, and shipping systems over REST, GraphQL, and message queues.

Team reviewing code for an upgrade-safe refactor
05

Upgrade-Safe Refactors

We rework core hacks and legacy extensions into clean, plugin-based code that survives the next Magento patch.

Technology

The Stack Behind Our Magento Module Development On Adobe Commerce

Every tool here earned its place across hundreds of modules. It keeps our Magento extensions clean, tested, and safe to deploy.

Senior engineering team reviewing module code together
A senior, US-based engineering team Adobe Commerce certified developers, architects, and QA

We choose our stack for code you can trust. It's why our modules pass static analysis, ship with tests, and install without breaking the store around them.

Magento 2
Adobe Commerce
PHP 8.2+
MySQL / MariaDB
Elasticsearch
Redis Cache
GraphQL API
REST API
Hyvä Theme
Next.js
Vue.js
TypeScript
Tailwind CSS
PWA Studio
Amazon AWS
Adobe Commerce Cloud
Fastly CDN
Cloudflare
Docker / K8s
Terraform IaC
SAP / NetSuite
Salesforce CRM
Stripe / PayPal
Klaviyo
Avalara Tax
ShipStation
Connected commerce systems, ERP, payments and shipping integrated with Magento
Integration Modules

Adobe Commerce Extensions That Connect Magento To Your Whole Stack

Most custom module work is integration work. We build the extensions that move data cleanly between Magento and the systems you already run.

REST, GraphQL & queue-based
We pick the right transport per integration and sync ERP and CRM data through message queues, so a slow third party never stalls your store.
Resilient by design
Retries, idempotent writes, and clear logging mean a failed call is recoverable, not a silent data drift you find weeks later.
Secure credential handling
Tokens stay in encrypted config, payloads are validated, and every connection is scoped to least privilege, so an integration is never the weak link.

Custom Magento Extensions
For Every US eCommerce Industry

We have built the tricky modules in your vertical before. Fitment engines, subscription billing, B2B pricing tiers, and compliance logic are already in our playbook as clean, tested extensions.

Fashion & Apparel

48+ Modules Built

Size/color configurable logic, seasonal catalog rules, and DTC plus wholesale workflows as purpose-built modules.

Explore Vertical →

Health & Wellness

Subscription module experts

Subscription billing logic, compliance labeling rules, and auto-ship modules built as clean, tested extensions.

Explore Vertical →

Electronics & Tech

Complex catalog experts

Technical attribute filtering, comparison tools, warranty registration, and tiered B2B pricing structures.

Explore Vertical →

Home & Furniture

AOV optimization focus

Product configurators, room visualizers, freight shipping integrations, and custom quoting engines.

Explore Vertical →

B2B & Wholesale

Custom pricing engines

Tiered pricing, negotiated quotes, company accounts, purchase order flows, and credit term management.

Explore Vertical →

Food & Beverage

Subscription & loyalty

Perishable shipping rules, subscription bundles, age verification, and regulatory compliance systems.

Explore Vertical →

Sports & Outdoor

High-SKU specialists

Gear configurators, team ordering portals, sponsorship programs, and dropship supplier feed management.

Explore Vertical →

Automotive Parts

VIN & fitment engines

Year/make/model fitment lookup, VIN integration, ACES/PIES data feeds, and multi-warehouse location management.

Explore Vertical →
How We Deliver

A Magento Module Development Process Built For Predictability

No black boxes, no surprise invoices. Working code every sprint, with clear progress from requirements to release.

1

Requirements

Capture the exact business rules, edge cases, and acceptance criteria for the module.

Week 1
2

Technical Design

Plan the extension points, data model, and APIs, with no core rewrites.

Week 1 to 2
3

Build

Develop to Adobe standards with code review on every pull request.

Week 2 to 5
4

Test & QA

Unit and integration tests, static analysis, and upgrade checks in CI.

Week 4 to 6
5

Release

Versioned Composer package, changelog, and a user guide, deployed safely.

Week 6 to 7
6

Maintenance

Compatibility testing on each release, patches, and enhancements.

Ongoing
Proof, Not Promises

Custom Magento Extension Development Results, In Real Projects

A few recent custom module projects with US brands. Some names shared with permission.

Product manager and developer reviewing a custom pricing module
● Northbeam Supply · Custom Module

Replaced three clashing pricing extensions with one tested module

A wholesale brand ran three overlapping price-rule plugins that fought each other at checkout. We replaced them with one module encoding their full contract-pricing logic, with integration tests for every tier. The conflicts left for good.

Engineers planning a marketplace extension submission
● Larkfield Labs · Marketplace Extension

Took a SaaS vendor's connector from idea to a published marketplace listing

A loyalty platform wanted a Magento connector to sell. We built it to Adobe Commerce Marketplace standards, cleared MEQP and coding-standard checks on the first full submission, and handled the review back-and-forth through to approval.

QA engineer and developer running module upgrade tests
● Cedar & Pine Co. · Upgrade-Safe Refactor

Untangled core hacks so a stuck store could finally upgrade

A home-goods retailer was frozen on an old Magento patch because legacy code rewrote core classes. We refactored the logic into clean, plugin-based modules with tests, then cleared the backlog of security patches in one safe deploy.

How To Work With Us

Engagement Models For Your Custom Magento Extension Development

One module built, an ongoing extension roadmap, or senior hands on your own backlog. Pick the model that fits your team.

Single Module

Best for one well-defined extension

  • Fixed scope, timeline & price
  • Requirements-to-release delivery
  • Tests, docs & Composer package
  • 30-day post-release warranty
Scope a Module
Most Popular

Extension Retainer

Best for an ongoing module roadmap

  • A standing pod for module work
  • Predictable monthly velocity
  • Compatibility testing each release
  • Direct Slack access to engineers
Start a Retainer

Staff Augmentation

Best for extending your in-house team

  • Certified Magento developers
  • Onboard in days, not months
  • Work in your repos & process
  • US-overlapping time zones
Hire Developers

Magento Development Teams Who Got The Feature They Needed

Custom Magento extensions, in the words of the people who shipped them.

Answers

Custom Magento Extension Development Questions, Answered

Weighing a custom Magento module against an off-the-shelf one? Straight answers below.

Talk to an Engineer
How much does custom Magento extension development cost?+
Most custom modules run from around $4,000 for a focused single-purpose extension to $60,000+ for a complex integration module with admin tooling and full test coverage. We scope to your business logic, the systems it touches, and the testing you need, with a clear estimate before any code is written.
Do you build extensions to Adobe coding standards?+
Yes. Every module follows the Adobe Commerce and Magento 2 coding standards, passes PHP_CodeSniffer and PHPStan, and uses dependency injection and plugins instead of core rewrites. It ships with PHPUnit and integration tests, so the code is reviewable, maintainable, and safe to deploy.
Can you get a Magento extension approved on the marketplace?+
Yes. We build to the Adobe Commerce Marketplace technical and quality requirements, run the same MEQP and coding-standard checks Adobe uses, prepare the package, user guide, and support material, and manage the submission and any review feedback until the extension is published.
Will a custom extension survive Magento upgrades?+
That is the point of building it properly. We avoid core rewrites, depend only on stable public APIs and service contracts, declare clear version constraints, and re-run the test suite against each Magento release, so a minor or security patch does not break your module.
Do you support and maintain the extensions you build?+
Yes. Every module ships with documentation and a short warranty window, and most clients move to a maintenance plan that covers compatibility testing against new Magento releases, security patching, and small enhancements as their business logic evolves.

Build The Custom Magento Extension Your Store Actually Needs

Tell us about the feature you need or the extension that keeps breaking. A senior Magento engineer will review what you have, scope a clean, upgrade-safe module, and map a clear path to a tested release.

A real engineer replies within one business day. No sales pitch, no obligation.