IT Development company · Working worldwide

Magento Extension Development

Magento Extension Development Services

We design and build Magento 2 extensions from scratch, following Magento's module architecture and coding standards. No fragile overrides, no indexer slowdowns, just clean functionality that belongs to you and survives every platform upgrade.

  • Magento 2 Standards
  • Security By Default
  • You Own The Code
  • Long-Term Support
0+ Years of combined experience
0+ Magento extensions delivered
0% Client satisfaction
0/7 Monitoring & support

The cost of the wrong extension

Is a Marketplace extension creating more problems than it solves?

If any of these feel familiar, a custom extension is not a luxury, it is the fix. Every one of these problems is solvable with the right approach.

Marketplace extensions that almost fit your catalog

Most Magento extensions are built for the average catalog. When your product attributes, pricing rules or B2B workflow need something specific, you end up paying for an extension and still building workarounds around the gaps.

Extension conflicts breaking the storefront

Magento's modular architecture means a poorly written extension can conflict with another, or with core code, in ways that only surface after a deployment. Lean, properly scoped code avoids that entirely.

Security vulnerabilities in unmaintained modules

Magento stores handle high transaction volumes, making them a frequent target. An abandoned or carelessly built extension sitting in your codebase is a liability you may not even know about.

No real connection to your ERP or PIM

Off-the-shelf extensions do not know about your ERP, PIM or fulfillment systems. A custom extension connects Magento to the rest of your business stack through proper APIs.

B2B and complex pricing logic that does not fit

Tiered pricing, customer groups, quotes and negotiated pricing rarely map cleanly onto generic extensions. A custom module is built around your actual B2B workflow.

No ownership of functionality your catalog depends on

When checkout, pricing or catalog logic depends on a third-party extension you do not own, a licensing change or a deprecated module can break critical functionality overnight.

Built with proven tools

Technologies we work with

We use Magento's native architecture and only bring in external tools where they genuinely add value and are maintained.

PHP PHP
Mg Magento 2
GQL GraphQL
API REST API
My MySQL
ES Elasticsearch
Rb RabbitMQ
Rd Redis
Vn Varnish
Co Composer
Pu PHPUnit
Ko Knockout.js
Rq RequireJS
Le LESS
Do Docker
AW AWS
AC Adobe Commerce
CS PHPCS
Ng Nginx
Gi Git

What we build

Our Magento extension development services

From a focused pricing module to a multi-module B2B extension with ERP integration, every project starts from a blank file.

Who we work with

Industries we serve

We have delivered Magento extensions across regulated, fast-moving and high-volume B2B and B2C sectors. We learn your catalog before we build for it.

Healthcare
Financial Services
Education
Hotels & Hospitality
Real Estate
Manufacturing
Logistics
Startups
Agencies
Professional Services

Why choose us

Magento extension development done the right way

Anyone can write a module that technically runs. We engineer extensions that are secure, lean, compatible with the next platform upgrade and fully owned by you, then stay around to maintain them.

Start your project
  • Built to Magento's module architecture

    Every extension follows Magento 2's dependency injection, plugin and observer patterns properly, so it behaves predictably and avoids conflicts with other modules.

  • Security by default

    ACL permissions, CSRF protection and input validation sit next to checkout and customer data from day one, not bolted on after a review flags a problem.

  • Lean by design

    Indexers and caching are handled correctly. Your extension adds functionality without dragging down page load or making catalog reindexing slower.

  • Connected to your stack

    We integrate with your ERP, PIM, 3PL and APIs so Magento becomes part of your operation instead of an island sitting apart from the rest of the business.

  • Built for real B2B complexity

    Tiered pricing, customer groups and quote workflows are built around how your business actually sells, not a generic catalog assumption.

  • You own the code

    Full IP assignment on every contract. The extension belongs to you outright, with no recurring licence fee on your own functionality.

  • Overlap with your hours

    Three to four hours of daily overlap with US, UK and Canada time zones, so demos and decisions happen in your working day.

  • Long-term compatibility

    We keep your extension updated as Magento releases new platform versions, so a major upgrade does not break checkout overnight.

How we work

Our Magento extension development process

Eight clear stages, each with a visible output you can review and approve. No black box between kickoff and launch.

  1. 01

    Discovery

    We map the catalog structure, pricing logic and integration points the extension needs to cover.

  2. 02

    Architecture

    Module structure, data model, API approach and admin UI plan agreed before a line of code is written.

  3. 03

    UI Design

    Admin grids, storefront changes and checkout steps designed and reviewed before development starts.

  4. 04

    Development

    Clean, documented PHP built to Magento 2 coding standards with demos at every milestone.

  5. 05

    QA & Testing

    Cross-version compatibility, indexer, checkout and edge-case testing before deployment or submission.

  6. 06

    Launch

    Deployed to your environment or submitted to the Magento Marketplace with review guidelines met.

  7. 07

    Review Support

    Any reviewer feedback addressed quickly so your listing is approved without unnecessary back-and-forth.

  8. 08

    Support

    Ongoing updates and compatibility checks with each Magento platform release.

What is included

A Marketplace listing is not the same asset

The difference between an off-the-shelf extension and a custom-built one is everything that happens under the surface. Here is what comes standard with every extension we deliver.

What you get Marketplace extension Devlon StedyDesk
Built around your exact catalog & pricing
Full IP ownership, no recurring licence
Security hardening next to checkout data
Indexer & caching handled correctly
Magento 2 coding standards compliant
B2B & complex pricing logic ready
Integrated with your ERP & PIM
Basic extension functionality
Generic admin configuration
Post-launch support & updates

Client words

Trusted by stores that depend on their Magento extensions

Our customer-group pricing and quote workflow were too specific for any Marketplace extension to handle. The custom module they built runs our entire B2B sales process now without a manual override.

Ecommerce Director Industrial supplies distributor, United States

We had three extensions conflicting with each other after a Magento upgrade. They rebuilt the functionality as one clean custom module and our next upgrade went through without a single regression.

Head of IT Multi-brand fashion retailer, United Kingdom

Syncing our ERP inventory into Magento used to need a nightly manual export. The integration extension they built keeps stock levels accurate in real time across both systems.

Operations Manager Building materials supplier, Canada

Questions, answered

Magento extension development FAQs

How much does a custom Magento extension cost?

Most custom extension projects land between $6,000 and $60,000 depending on complexity and the number of integrations. A focused pricing or admin module sits at the lower end; a multi-module B2B extension with ERP integration sits higher. Every quote is itemized before work begins.

How long does a Magento extension take to build?

A focused single-feature module typically takes 4 to 8 weeks. A multi-module B2B extension with admin interfaces and ERP integration usually runs 10 to 18 weeks. You see a working build early and a demo every sprint.

Do you build for Magento Open Source and Adobe Commerce?

Yes. We build extensions for both Magento Open Source and Adobe Commerce, accounting for the additional B2B and enterprise features available on Commerce where the project calls for it.

Can you build custom pricing or B2B workflows?

Yes. Tiered pricing, customer-group pricing, negotiated quotes and requisition list workflows are some of the most common reasons clients commission a custom Magento extension.

Can the extension connect to our ERP or PIM?

Yes. ERP, PIM and third-party integration through REST, GraphQL and message queues is a core part of our Magento practice, so catalog and order data sync automatically instead of relying on manual exports.

Will the extension slow down our storefront or reindexing?

We handle indexers and caching correctly as part of every build, so functionality is added without dragging down page load or making catalog reindexing slower. Performance is tested before launch, not assumed.

Can you fix conflicts between existing extensions?

Yes. We audit the conflicting modules first, identify the actual cause, then either resolve the conflict directly or consolidate the functionality into one clean custom module that avoids the issue going forward.

Will the extension stay compatible with Magento platform updates?

We code to current Magento 2 APIs and avoid deprecated patterns, which significantly reduces compatibility risk. Our maintenance plans also include testing and updates with each Magento platform release.

Do you handle Magento Marketplace submission?

Yes. We prepare the extension to meet Magento Marketplace technical and security review guidelines and handle the submission process, addressing any reviewer feedback until the listing is approved.

Can you audit or fix an extension we already have?

Yes. We audit existing extensions for security issues, deprecated APIs and performance problems, then refactor to current standards. This is often faster and cheaper than a full rebuild.

Do you provide maintenance after the extension launches?

Yes. Our maintenance plans cover Magento version compatibility, security patches, bug fixes and a monthly bucket of improvement hours, with most issues resolved overnight your time.

What happens after the extension launches?

Every project includes a handover, documentation and a warranty window for fixes. Most clients move onto a maintenance plan so the extension stays current as Magento evolves. We are still available for version two, not just while the invoice is open.

Ready to build a Magento extension that actually fits your catalog?

Tell us what you need. You will get a straight answer on scope, cost and timeline, usually within one business day. No fluff, no obligation.