Drupal Developer in Poland

Drupal 7 reached end of life - staying on it is a security and hosting risk. A move to Drupal 11 is not a one-click upgrade: it is a content migration, a rewrite of custom modules for modern APIs, and a new theme on Twig. I plan the migration, map fields and entities, set up 301 redirects and go live with zero downtime where possible.

• Audit of Drupal 7 modules, custom code and content structure
• Content and user migration via Migrate API to Drupal 11
• Rewrite of custom modules for Drupal 11 / Symfony APIs
• Preserve Pathauto aliases, redirects and SEO metadata
• Parallel staging environment and cutover checklist

Not every project can migrate to Drupal 11 next month. I still support Drupal 7 sites: security patches where available, PHP version compatibility, backup strategy, performance fixes and emergency recovery - so the business keeps running while we prepare the Drupal 11 migration.

• Security hardening and limited Drupal 7 patching
• PHP / MySQL compatibility fixes on older hosts
• Backup, monitoring and emergency WSOD recovery
• Stabilise contrib module conflicts before migration
• Roadmap and estimate for the move to Drupal 11

A slow Drupal site usually comes from uncached Views, oversized entity queries, missing BigPipe / Dynamic Page Cache, or an overloaded admin with too many modules. I profile Drupal 11 (and Drupal 7 if needed), tune Redis / Memcache, fix Twig and assets, and get Core Web Vitals back into a healthy range.

• Views and database query optimisation
• Internal page cache, Dynamic Page Cache, BigPipe, Redis
• Twig, CSS/JS aggregation and CDN setup
• Admin UI speed-up after module bloat
• Core Web Vitals (LCP, CLS, INP) improvements

After a deploy or Composer update Drupal may show a white screen, PluginNotFoundException or a failed config import. I diagnose stack traces, fix custom plugins and services, resolve composer.lock conflicts and restore a clean config sync workflow for Drupal 10/11 projects.

• WSOD diagnosis via logs, Twig cache and verbose error level
• Fix PluginNotFoundException and deprecated API calls
• Composer / Drupal 11 core and contrib updates safely
• Config split, config ignore and CI-friendly sync
• Drush updb / cr recovery after a failed release

Legacy hooks and procedural .module code break on Drupal 11. I build and refactor custom modules with dependency injection, plugins, forms and services - and themes on Twig with Layout Builder or Paragraphs - so the project stays maintainable on the latest core.

• Custom modules with plugins, forms and services
• Migrate custom D7/D8 code to Drupal 11 APIs
• Twig themes, Layout Builder and Paragraphs
• Content types, fields, Views and taxonomies
• Code review of inherited custom modules

Outdated core or contrib modules are the most common entry point for hacks - especially on unsupported Drupal 7. I apply security advisories on Drupal 11, clean malware, rotate credentials, harden file permissions and set a safe update process so the incident does not repeat.

• Apply SA-CORE and contrib security updates
• Malware / backdoor cleanup and file integrity check
• Roles, permissions and admin access hardening
• Secure Composer workflow and staging updates
• Post-incident monitoring and backup plan

Multilingual Drupal sites often break after module updates: untranslated strings, wrong language negotiation, Pathauto aliases per language or missing hreflang. I fix Content Translation, Interface Translation and Configuration Translation on Drupal 11 - and keep language structure intact during a Drupal 7 migration.

• Content, interface and config translation setup
• Language negotiation and language switcher fixes
• Per-language Pathauto aliases and redirects
• hreflang, canonical and sitemap for each locale
• Preserve multilingual content in D7 → D11 migration

Drupal Commerce stores and portals need reliable checkout, payment gateways, tax rules and sync with CRM or ERP. I fix broken order flows, set up JSON:API / REST / GraphQL integrations and keep catalog and stock consistent - on Drupal 11 Commerce or while migrating a legacy Drupal 7 shop.

• Drupal Commerce checkout, cart and order fixes
• Payment gateways and VAT / tax configuration
• CRM / ERP sync via JSON:API, REST or custom queues
• Catalog, stock and price import automation
• Migrate Drupal 7 Ubercart / Commerce to Drupal 11