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Michael Demchenko
Senior Drupal Developer / Tech Lead
Phone: [open contact info](look above in the "contact info" section)
E-mail: [open contact info](look above in the "contact info" section)
GitHub: https://github.com/DartDev/drupal-playground

SKILLS

CORE EXPERTISE
Enterprise Drupal Architecture • Backend Engineering • API Integrations • Data Migrations
Performance Optimization • Continuous Integration • Technical Leadership • Automated Testing

CMS & FRAMEWORKS
Drupal (6-11) • Symfony (Intermediate) • Laravel (Basic)

BACKEND ENGINEERING
PHP • OOP • PSR • SOLID • DRY • KISS
SQL • REST • SOAP • GraphQL • JSON • XML • Twig

FRONTEND & THEMING
HTML • CSS • SCSS • LESS • JavaScript • jQuery • Bootstrap • Foundation • Atomic Design

TESTING & QUALITY ENGINEERING
PHPUnit • Behat • Selenium • TDD • BDD

PERFORMANCE & OPTIMIZATION
Core Web Vitals • Lighthouse • BrowserStack • Partytown • Percy • Akamai CDN (Certified)

DEVOPS & TOOLS
Docker • DDEV • WSL2 • Composer • Drush • Git (GitHub/GitLab/Bitbucket) • XDebug • NPM • Gulp

SUMMARY

- 15+ years of experience as a Full-Stack Drupal developer.
- 9+ years of experience with Drupal 8/9/10/11, with a strong focus on Back-End development.
- Implementation of projects based on Drupal 6/7/8/9/10/11, ranging from individual websites to complete
enterprise portals.
- Deep knowledge of widely used contributed modules and the ability to orchestrate them into cohesive
Drupal ecosystems.
- Extensive experience with data migrations between major Drupal versions and to/from non-Drupal
platforms.
- Intermediate familiarity with Symfony through extensive Drupal 8-11 development; basic experience with
Laravel through its use in teaching and mentoring.
- Ability of acting as a Tech Lead - facilitating technical discussions, defining architectural approaches, and
communicating directly with stakeholders.
- Senior-level experience working full-time on high-impact Drupal projects in enterprise environments,
collaborating with project managers, cross-functional teams, and third-party vendors.

EXPERIENCE

Deloitte Technology Services
Senior Consultant
August 2025 - Present
- Designed the application testing strategy across infrastructure, platform, application, integration, and
client layers, defining unit, kernel, functional, end-to-end, and visual test coverage.
- Authored an article with detailed guidance on automated testing practices with Drupal/PHPUnit, including
the use of Unit, Kernel, and Functional tests to validate business logic, integrations, and user scenarios.
- Designed and documented local automated testing setup for developers using DDEV, PHPUnit, and
PHPStorm, including first-time project configuration, test database provisioning, and reusable operational
procedures for development.
- Created a practical training guide demonstrating how to run and debug automated tests locally, measure
code coverage, and systematically refactor procedural Drupal code into testable units.
- Integrated code coverage measurement workflow via GitHub Actions.
- Authored Operational Policies & Procedures for management of environment variables in a secure
fashion, involving Akeyless, MuleSoft, and Saviynt for different scenarios of the process.
- Owned Alibaba Aliplayer integration: upgraded SDK and licensing, liaised with Alibaba engineers, and
resolved critical Safari/Edge playback issues.
- Designed and executed detailed cross-environment manual testing scenarios.
- Served as a support engineer for Milano-Cortina 2026 Winter Olympic & Paralympic Games.

Wunderman Thompson
Senior Drupal Developer (at Nokia)
August 2022 - December 2023
- Designed and developed new functionalities for a large-scale Drupal 9 multi-site application.
- Modernized and enhanced existing features by introducing contemporary development approaches.
- Identified, investigated, and resolved complex legacy issues proactively.
- Reviewed and refactored code to improve quality, maintainability, and performance.
- Applied core and contributed module upgrades, updates, and patches.
- Introduced modern third-party dependency offloading strategies, significantly reducing main-thread
workload, improving First Contentful Paint, and increasing overall performance scores.
- Integrated automated testing into the project lifecycle.
- Contributed to architectural planning and technical decision-making processes.

InterEx Group
Senior Drupal Developer (at everis / NTT Data)
March 2021 - September 2021
- Leading role in back-end development for an internal Drupal 8/9 company portal.
- Assumed supplementary Back-End Tech Lead responsibilities.
- Refactored legacy codebases to align with modern standards.
- Implemented patches for contributed modules.
- Participated in architectural design and planning discussions.
- Researched and implemented custom solutions and overrides for a complex Layout Builder setup.
- Developed custom handlers for Content Moderation workflows with Scheduler integration.
- Architected and implemented a Group-based content access management system.

Private Entrepreneurship (via Upwork)
Senior Drupal Developer
November 2018 - March 2021
- Delivered full-stack development and maintenance for Drupal 7/8/9 applications.
- Designed and implemented custom modules and themes, incorporating continuous client feedback.
- Managed end-to-end project lifecycles, from research and architectural planning to deployment and
post-launch support.
- Executed complex data migrations across Drupal versions using Migrate API and custom migration
solutions, including integrations with non-Drupal systems.
- Performed major version upgrades, minor updates, and patch implementations.
- Refactored legacy codebases in compliance with modern Drupal object-oriented standards.
- Led development teams, conducted code reviews, and supported architectural planning initiatives.
- Integrated automated testing and enforced code standardization practices.
- Implemented robust configuration management and deployment workflows using Config Split and modern
Drupal methodologies.

Tremend
Middle Drupal Developer
June 2017 - November 2018
- Maintained and enhanced multiple Drupal 8 instances.
- Implemented new features for existing Drupal 7 and WordPress projects.
- Integrated NetSuite CRM into the Drupal-based user lifecycle.
- Developed custom user synchronization mechanisms to support NetSuite CRM requirements.
- Evaluated and refactored legacy codebases.
- Researched and implemented data sanitization solutions to remove confidential content.
- Developed a custom module for configurable multilingual HTML email notifications supporting
authentication and user lifecycle processes.
- Implemented complex custom redirect logic.

Private Entrepreneurship (via oDesk)
Middle Drupal Developer
September 2014 - June 2017
- Delivered full-stack development and maintenance for Drupal 6/7/8 applications.
- Developed custom modules and themes aligned with project specifications.
- Diagnosed and resolved bugs of varying complexity and severity.
- Upgraded and patched outdated dependencies, implementing custom fixes as required.
- Refactored deprecated APIs and legacy code structures.
- Executed data migrations between Drupal and non-Drupal systems.
- Supported client projects involving WordPress, Joomla, TYPO3, and standalone PHP applications.

Local Companies & Freelance
Junior/Middle Drupal Developer
January 2009 - September 2014
- Contributed to the development and maintenance of Drupal 6 and Drupal 7 websites under senior
developer guidance.
- Implemented new features through custom modules and theming based on technical specifications and
client requirements.
- Assisted with data migrations and content imports using Migrate and Feeds.
- Collaborated with front-end developers, designers, and QA engineers to ensure successful feature
delivery.
- Utilized SVN, Git, Drush, and Xdebug for daily development and environment management.