What does a Magento 1 Certified developer do?
A Magento 1 Certified developer builds and customizes e-commerce stores on the legacy Magento 1 platform using its specific module architecture and PHP-based framework. This role focuses on maintaining, extending, and fixing existing Magento 1 installations rather than building new sites on modern versions. The developer writes custom code to modify catalog behavior, checkout processes, and admin interfaces while ensuring compatibility with the older system structure. They also create integrations with external systems through web APIs to keep the store connected to third-party services.
- Authors custom Magento modules by writing PHP classes and XML configuration files that extend core platform functionality without altering base code. This work involves creating controllers, models, and helpers that implement specific business logic for product management, order processing, or customer accounts. The developer structures these modules to follow Magento 1’s dependency injection and event observer patterns so that updates remain stable and maintainable over time.
- Modifies storefront and admin user interfaces by editing layout XML files, block classes, and PHTML template files to change how pages render. This task requires assembling page structures from containers and blocks, then connecting those blocks to specific templates that output HTML. The developer adjusts CSS and JavaScript within the theme layer to match design requirements while preserving the underlying Magento layout system integrity.
- Builds integrations with external systems such as payment gateways, shipping carriers, or enterprise resource planning tools using Magento 1’s REST and SOAP web APIs. The developer configures OAuth 1.0a authentication for secure third-party connections and writes code that sends or receives data through WSDL-based SOAP calls or REST endpoints. This work ensures that product inventory, order status, and customer data sync correctly between the Magento store and outside platforms.
- Debugs and fixes issues in existing Magento 1 codebases by tracing errors through log files, database queries, and PHP execution paths. The developer identifies conflicts between custom modules and core features, then applies patches or code adjustments to resolve bugs in catalog display, checkout flow, or admin operations. This maintenance work keeps the store functional and secure despite the platform no longer receiving official vendor support.
How to hire a Magento 1 Certified developer on Upwork
Step 1: Post a job
Define your legacy store requirements clearly to attract specialists who understand the older platform architecture. The Job Post Generator powered by Uma™, Upwork's Mindful AI helps you draft a precise description in seconds. Describe your needs in a few sentences and Uma drafts a job post for the role. You can write a new post, update a saved draft, or reuse an existing post.
- Specify that the freelancer must build custom modules using PHP and XML within the Magento 1 module system.
- List required UI updates involving layout XML, blocks, and templates for both storefront and admin areas.
- Detail any necessary REST or SOAP API integrations for connecting external systems to your catalog or checkout.
Step 2: Evaluate candidates
Look for proof of deep experience with the specific Magento 1 codebase rather than general e-commerce skills. Uma can run instant video interviews and build shortlists with side-by-side comparisons to speed up this review.
- Check portfolios for examples of customized checkout flows or catalog modifications built on the Magento 1 framework.
- Verify past work includes debugging complex issues in legacy PHP code and applying configuration fixes.
- Confirm the candidate has authored API-based integrations that communicate via web services like OAuth 1.0a.
Step 3: Interview your top choices
Discuss technical approaches to maintaining older platform versions and handling deprecated functions. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.
- Ask how they structure new features as modules to avoid conflicts with core Magento 1 files.
- Request examples of how they update layouts to assemble pages from containers and blocks.
- Discuss their method for validating changes in key flows like admin areas after deployment.
Step 4: Agree on scope and begin work
Set clear milestones for module development and UI updates before starting the contract. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.
- Define deliverables such as custom modules that implement specific business logic without breaking existing features.
- Outline tasks for updating storefront templates and blocks to meet current design requirements.
- Establish testing criteria for API connections and checkout functionality before final approval.
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The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.