Senior Wordpress Developer at Flatiron Software

Remote - United States

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Flatiron Software Co. is a fully remote, US-based software company delivering high-impact digital experiences. We are seeking a Senior WordPress Developer to lead backend development of custom plugins, APIs, and integrations for enterprise clients, ensuring performance, accessibility, and SEO compliance across large-scale WordPress sites.

Requirements

Experience

  • 5+ years of professional WordPress development experience

Skills

  • PHP
  • MySQL
  • HTML
  • CSS
  • JavaScript
  • WordPress hooks
  • custom queries
  • optimization strategies
  • Advanced Custom Fields (ACF)
  • Custom Post Type UI (CPT UI)
  • Gutenberg
  • WooCommerce
  • WordPress REST API
  • webhooks
  • API integrations
  • Git
  • CI/CD pipelines
  • performance optimization
  • caching mechanisms
  • scalable WordPress architectures

Languages

  • English

Responsibilities

  • Design and develop custom WordPress plugins and themes from scratch using PHP, MySQL, and modern best practices.
  • Implement advanced custom fields (ACF), custom post types, and taxonomies for structured data management.
  • Optimize database queries and improve performance across complex WordPress sites (meta queries, caching, indexing).
  • Integrate WordPress with third‑party APIs and automation tools (REST, webhook systems, Make/Zapier, Algolia, etc.).
  • Develop and maintain cron jobs, background tasks, and data synchronization scripts.
  • Build and maintain Gutenberg blocks or React‑based admin components when required.
  • Ensure sites meet performance, accessibility, and SEO standards (Lighthouse, Core Web Vitals).
  • Collaborate with cross‑functional teams (frontend, DevOps, QA, design) following Agile practices.
  • Write clean, well‑documented, and unit‑tested code following OOP principles and WordPress coding standards.

Technologies

PHPMySQLHTMLCSSJavaScriptWordPressACFCPT UIGutenbergWooCommerceREST APIwebhooksMake/ZapierAlgoliaCron JobsReactGitCI/CD pipelinesPerformance optimization

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