Олена

Senior WordPress & WooCommerce Backend Developer
Varna, Bulgaria (Remote, Independent Contractor)
Olena Polonska
Email: [відкрити контакти](див. вище в блоці «контактна інформація») | WhatsApp: [відкрити контакти](див. вище в блоці «контактна інформація») |
LinkedIn | GitHub
SUMMARY
Senior Backend Developer with 10+ years of experience specializing in WordPress &
WooCommerce solutions. Expert in custom plugin and child theme development. Skilled in
REST API integrations. I excel at refactoring and maintaining legacy codebases where
documentation is missing, ensuring long-term system stability. Proven track record in CRM
integrations (Groundhogg), workflow automation, and building maintainable backend logic.
TECHNICAL SKILLS
Backend & Core: PHP (OOP), MySQL, REST API, Action Scheduler, Webhooks.
WordPress & E-commerce: WordPress, WooCommerce, ACF Pro, Custom Plugin &
Theme Development.
Frontend: JavaScript (ES6+, jQuery, Vanilla JS), HTML5, CSS3, currently expanding
Gutenberg-related React basics.
Architecture & Operations: System Refactoring, Data Integrity & Backup Protocols,
Version Control (Git), familiar with Deployment Workflows.
Integrations & Tools: Third-party API Integrations (CRM, Payment Gateways),
Workflow Automation, Technical Documentation, AI-Assisted Development (Prompt
Engineering).

PROFESSIONAL EXPERIENCE
Senior Backend PHP / WordPress Engineer | Liel Albums (Israel) —
Remote August 2021 — Present
E-commerce Ecosystem Engineering: Architected a modular extension for a complex
WooCommerce product environment, implementing a "Single Source of Truth" for
20+ intricate products with cross-template dependencies. Reduced manual maintenance
and error probability by 80% through a centralized, component-based architecture.
Legacy System Stabilization & Refactoring: Systematically modernizing legacy
codebases by implementing modern design patterns for outdated core-dependent
systems. Leverage AI-assisted engineering to perform deep code audits, ensuring best
practices for security, robustness, and architectural integrity.
High-Complexity Data Architecture: Managed CRM involving 1500+ custom contact
fields and 700+ automated workflows (See LinkedIn Case Study).
Event-Driven Automation: Designed and implemented a proprietary scheduling
engine for global virtual meetings using Action Scheduler (Technical Breakdown on
LinkedIn). Managed high-precision notification triggers, reducing administrative
overhead by 95%.

API & Systems Integration: Engineered deep integrations with Groundhogg CRM
and third-party automation tools using REST API and Webhooks. Focused on
maintaining high data consistency and synchronization standards.
Technical Documentation & Process Standardization: Developed comprehensive
internal technical guides and "step-by-step" scripts to bridge the gap between
engineering and non-technical staff. Introduced structured documentation for legacy
systems, improving team collaboration and onboarding (see my post on LinkedIn).

WordPress Developer | Freelance / Project-based —
Remote January 2019 — August 2021
Membership Platform Engineering (Frida Art Community): Architected a
membership-driven portal for artists, implementing custom frontend submission
workflows and a multi-tier user role management system.
Full-Cycle Web Solution Delivery: Delivered 5+ custom WordPress solutions for
various industries. Responsible for the entire development lifecycle, responsive
frontend implementation, and maintainable code structures.
WooCommerce Plugin Development & Optimization (BeRocket): Contributed to
the feature development and performance tuning of high-traffic WooCommerce plugins.

Web Developer / Technical Specialist | Various Companies (Ukraine)
May 2016 — December 2018
Foundation Years: Focused on mastering the WordPress ecosystem, custom theme
development, and transitioning legacy websites to modern CMS architectures.
Technical Translation: Leveraged background in CS literature translation to provide
high-quality documentation and clear communication within development teams.

OPEN SOURCE PROJECTS
Open Source Contribution GTranslate Custom Translation Bridge
Developed a lightweight, dependency-free WordPress plugin to provide manual
translation overrides for the GTranslate free version.
Implemented a custom AJAX-powered repeater UI (replacing the need for ACF Pro)
and utilized MutationObserver for real-time frontend DOM updates.

EDUCATION
Master of Engineering (MEng) with High Honors Kyiv Polytechnic Institute (NTUU
"KPI") Specialization: Electronic Engineering
Advanced Software Development Program DevClub Training Center Focus:
Algorithms, Data Structures, and Clean Code Principles.

LANGUAGES
English: Upper-Intermediate (B2) | Ukrainian: Native | Russian: Native