Senior WordPress Engineer - Enterprise Intranet and Microsoft Integrations

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An enterprise client is seeking a Senior WordPress Engineer to build a secure, scalable employee intranet with custom Gutenberg components, enterprise search, multilingual and RTL support, and integrations across Microsoft Entra ID, Microsoft Graph, SharePoint, Power BI, HR systems, and a corporate Service Desk.

This is a hands-on engineering engagement focused on custom development, systems integration, performance, security, testing, and technical handover. The selected freelancer will work from approved designs and defined enterprise requirements rather than assembling the solution from off-the-shelf themes or plugins.

For this project, the selected candidate will:
Implement OpenID Connect single sign-on with Microsoft Entra ID as the first major deliverable, including MFA support, automatic user provisioning, and security-group-to-WordPress-role mapping
Build a reusable library of custom React-based Gutenberg blocks for the homepage and department portals
Develop responsive, design-accurate components including news cards, event grids, quick-action tiles, document accordions, portal carousels, and regional filters
Ensure all frontend components support multilingual content and RTL Arabic layouts
Develop a custom notifications plugin with a dedicated database table, REST endpoints, unread indicators, and corporate SMTP email notifications -Build a configurable spin-the-wheel module with server-side draw logic, prize settings, per-user cooldowns, audit logs, and HR fulfilment notifications
Create event registration forms that pre-fill employee information from the authenticated user’s synchronised profile
Develop a cloud-embedded video gallery without storing video files in WordPress
Implement fast, relevant search across intranet content using ElasticPress, Elasticsearch, or SearchWP
Add AJAX filtering and server-side pagination to content listings such as News, Events, Directory, Gallery, Success Stories, and Policies
Implement protected downloads with authorisation checks and download logging
Build a scheduled employee-directory synchronisation process using Microsoft Graph users, photos, and delta queries
Store synchronised employee data in a custom read-only table and cache profile images through Azure Blob Storage or a CDN
Develop a read-only SharePoint connector for policy and procedure metadata while keeping SharePoint as the system of record
Integrate read-only feeds for new joiners, birthdays, and internal vacancies, including graceful manual-publishing fallbacks
Connect administrative and IT request forms to the corporate Service Desk through create-only API calls
Optionally develop a read-only “My Open Tickets” widget
Embed Power BI dashboards with role-based access controls
Store secrets securely using Azure Key Vault or an equivalent credential-management platform -Apply least-privilege API scopes, retry and backoff logic, structured failure logging, and operational alerting
Build custom database tables where WordPress post meta would not scale
Implement Redis object caching, query optimisation, and other performance improvements
Develop all custom plugins, blocks, endpoints, and integrations according to WordPress coding standards
Apply sanitisation, escaping, nonces, capability checks, secure file handling, and other OWASP-aligned protections
Support QA and UAT, resolve defects, simulate integration failures, and verify fallback behavior
Maintain a disciplined Git, code review, staging, and production deployment workflow
Deliver code documentation, an integration runbook, endpoint and field-mapping documentation, an administrator guide, and a complete technical handover

Ideal candidates will have:
Extensive professional PHP development experience, including several years building custom WordPress plugins and themes for enterprise environments
Expert knowledge of WordPress core APIs, including custom post types, taxonomies, hooks, cron, transients, roles, capabilities, REST APIs, and WP-CLI
Strong experience developing custom Gutenberg blocks using React, dynamic rendering, block patterns, and theme.json
Demonstrated experience implementing OAuth 2.0 or OpenID Connect SSO, preferably with Microsoft Entra ID
Hands-on experience with Microsoft Graph, employee-directory data, SharePoint files, delta queries, pagination, and scheduled synchronisation jobs
Experience designing and consuming secure REST APIs with robust authentication and failure handling
Advanced knowledge of custom database tables, MySQL optimisation, and high-volume WordPress data
Experience with ACF Pro, Polylang, multilingual websites, and Arabic or RTL interfaces -Strong modern JavaScript, React, responsive CSS, and design implementation skills
Experience with Azure Key Vault or comparable secrets-management tools
Practical knowledge of WordPress security, including XSS, CSRF, injection, authorisation, and file-handling risks
Experience with ElasticPress, Elasticsearch, SearchWP, Redis, Composer, and preferably Bedrock -Strong documentation, communication, troubleshooting, and code review discipline
Previous experience delivering intranets, employee portals, Power BI integrations, or enterprise platforms in GCC environments is highly desirable

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