Nick Stelnyk

Nick Stelnyk

WordPress / Full stack development

Senior Full Stack Developer & WordPress Architect

I build custom WordPress platforms, headless applications, and API-driven systems, connecting content, data, and user experience from architecture through deployment.

Explore my expertise View engineering work
GitHub LinkedIn
Nick Stelnyk

01 / Systems

What I Build

WordPress Platforms

Custom themes, plugins, Gutenberg components, and Multisite systems built around structured content and practical editor workflows.

Headless Applications

React and Next.js interfaces connected to WordPress and external services through REST APIs and GraphQL.

Integrations & Automation

API integrations, webhooks, background processing, and synchronization workflows connecting business systems.

Search & Data Experiences

Search indexing, geospatial filtering, interactive maps, and caching for content-rich applications.

02 / Expertise

Technical Expertise

WordPress & Content Architecture

Building reusable content components and structured publishing systems that support both application requirements and everyday editorial work.

  • Custom themes and plugins
  • Gutenberg
  • ACF
  • Custom post types
  • Taxonomies
  • Multisite
  • Multilingual content
  • WooCommerce
  • WP-CLI

Backend & APIs

Implementing application logic, data models, integrations, and asynchronous workflows with clear boundaries between components.

  • PHP
  • MySQL
  • Node.js
  • REST APIs
  • GraphQL
  • Webhooks
  • Background jobs

Frontend Engineering

Developing responsive interfaces, reusable components, and API-connected frontend experiences.

  • JavaScript
  • TypeScript
  • React
  • Next.js
  • HTML
  • CSS
  • Tailwind CSS

Search & Data

Making structured content searchable through automated indexing and useful filtering and mapping interfaces.

  • Typesense
  • Elasticsearch
  • Indexing pipelines
  • Data synchronization
  • Geospatial filtering
  • Caching

Quality & Reliability

Reviewing implementation quality, investigating production issues, and improving maintainability, accessibility, and performance.

  • Accessibility
  • WCAG-focused remediation
  • Performance optimization
  • Security review
  • Debugging
  • PHPCS
  • PHPStan
  • PHPUnit

Delivery & Infrastructure

Supporting development environments, build processes, deployments, and production troubleshooting.

  • Git
  • GitHub
  • Bitbucket
  • CI/CD
  • Linux
  • AWS EC2
  • WP Engine
  • Pantheon
  • Vite
  • Webpack

Additional Experience

Drupal, Joomla, PrestaShop, Elementor, Divi, WPBakery, jQuery, Bootstrap, Figma and Adobe Creative Suite.

03 / Engineering Work

Selected Engineering Work

Search & data platform

Commercial Real Estate Search Platform

What I implemented

Implemented structured property, agent, and office relationships, search indexing, geospatial filtering, interactive maps, and automated data synchronization.

  • WordPress Multisite
  • PHP
  • MySQL
  • REST APIs
  • Typesense
  • JavaScript
Technical approach: Commercial Real Estate Search Platform

WordPress Multisite with API-connected data workflows, Typesense indexing, and caching.

Content publishing system

Multilingual Content Platform

What I implemented

Implemented a custom content architecture with reusable Gutenberg components, ACF fields, custom post types, templates, and filtering.

  • WordPress
  • Multisite
  • Gutenberg
  • ACF
  • PHP
  • JavaScript
Technical approach: Multilingual Content Platform

Shared Multisite functionality with reusable presentation components and editor-focused workflows.

Identity integration

Account & Identity Integration

What I implemented

Implemented registration and account-management functionality connected to an external identity service.

  • WordPress
  • PHP
  • REST APIs
  • JavaScript
  • AJAX
Technical approach: Account & Identity Integration

Server-side API integration with asynchronous frontend interactions.

Messaging & automation

Extensible Messaging Plugin

What I implemented

Implemented provider adapters, webhook handling, outgoing message queues, administration, and integration APIs.

  • WordPress
  • PHP
  • REST APIs
  • Webhooks
  • Action Scheduler
  • WooCommerce
Technical approach: Extensible Messaging Plugin

Separate provider-specific behavior from shared application logic and background processing.

04 / Approach

How I Work

Understand the Requirements

Translate business needs and existing system constraints into an implementation scope.

Design for Maintenance

Use clear data models, reusable components, and explicit integration boundaries.

Build and Validate

Review functionality, accessibility, performance, and security using checks appropriate to the change.

Deliver and Support

Support deployments, documentation, handoff, and production troubleshooting.

AI-Assisted Development

I use ChatGPT, Codex, Claude Code, and GitHub Copilot to support implementation, debugging, refactoring, testing, and documentation. I review generated code and remain responsible for architectural decisions and production readiness.

05 / FAQ

Frequently Asked Questions

What types of web projects do you work on?

I build custom WordPress websites, Multisite platforms, headless applications, plugins, and API integrations. My work includes structured content systems, searchable directories, e-commerce functionality, and applications that connect websites with external business services.

Do you develop custom WordPress themes and plugins?

Yes. I develop custom themes and plugins around specific content and business requirements. This includes Gutenberg blocks, ACF-based content models, custom post types, WooCommerce extensions, and reusable functionality that goes beyond standard plugin configuration.

Can you build headless WordPress applications with React or Next.js?

Yes. I use WordPress as a content backend with React or Next.js interfaces connected through REST APIs or GraphQL. I also work with traditional WordPress architectures and choose the approach based on publishing needs, application requirements, and maintenance complexity.

Can you integrate WordPress with external APIs?

Yes. I build integrations connecting WordPress with external data sources, account services, and messaging providers. Depending on the requirements, these integrations can include webhooks, scheduled synchronization, background processing, and custom administration tools.

Do you work with WordPress Multisite?

Yes. I develop Multisite solutions with shared themes, plugins, and reusable components while supporting individual site requirements. My experience includes multilingual content platforms and commercial real estate systems with structured data and search functionality.

Can you improve an existing website’s performance and accessibility?

Yes. I investigate performance bottlenecks and accessibility issues in existing WordPress websites. Improvements can include database queries, caching, frontend assets, keyboard navigation, form labels, contrast, and heading structure. The scope depends on the findings and the existing architecture.

Do you build advanced search and filtering functionality?

Yes. I work with Typesense and Elasticsearch to make structured content easier to search. My experience includes indexing WordPress content and property data, automated synchronization, geospatial filtering, interactive maps, and caching.

How can I discuss a project or request your resume?

Connect with me on LinkedIn to discuss a project, technical requirements, or an opportunity and request my full resume. You can also explore my public repositories and projects on GitHub.

06 / Contact

Let’s discuss your next technical challenge.

Connect with me on LinkedIn to discuss opportunities or request my full resume. Explore my code and projects on GitHub.

Connect on LinkedIn Explore GitHub