Sahil Dhir

Senior WordPress Developer and PHP Developer with 10+ years of experience building, customising, and managing enterprise-scale WordPress platforms. Expert in custom WordPress theme development, child theme development, custom plugin development, PHP, hooks and filters (add_action / add_filter), ACF, Custom Post Types, WPML multilingual, and WordPress multisite. Proven track record managing 1,000+ page multilingual WordPress websites, reducing page load time from 12s to under 3s, and achieving Core Web Vitals scores of 95+ on mobile and desktop.

Skilled in building custom HTML forms with JavaScript validation, ZoomInfo form autocomplete integration, and end-to-end lead tracking via Pardot, Salesforce, GA4, and dedicated conversion pages. Experienced in staging environments, version control for WordPress, WP-CLI, cPanel, and Git-based deployment workflows. Available for remote or onsite WordPress Developer roles worldwide.

Senior WordPress Developer — Marketing & Product at Quark Software Inc. (2020-08 – Present)

• Architected and managed quark.com — a 1,000+ page multilingual enterprise WordPress platform — building custom PHP themes, child themes, and custom plugins using hooks and filters (add_action / add_filter), ACF, Custom Post Types, WPML multilingual configuration, and WordPress multisite across regional marketing, documentation, and security sites.
• Reduced page load time from 12s to under 3s and achieved Core Web Vitals scores of 95+ on both mobile and desktop using WP Rocket, lazy loading, image optimisation, database optimisation, and advanced caching — significantly improving SEO rankings.
• Built and maintained 30+ custom lead capture forms using HTML, CSS, and vanilla JavaScript with client-side validation — integrated ZoomInfo form autocomplete for enterprise visitor identification, and connected all forms end-to-end with Pardot form handlers and Salesforce Web-to-Lead for CRM sync.
• Implemented full conversion tracking pipeline — each form submission routed to a dedicated thank-you page, enabling individual form performance tracking in GA4 with user journey mapping, goal completions, and funnel analysis via GTM.
• Managed staging environments and Git-based version control workflows for WordPress — maintaining development, staging, and production environments with WP-CLI for database migrations, plugin management, and deployment automation.
• Integrated 10+ third-party tools and tracking scripts including Salesforce, ZoomInfo, GTM, Google Ads, Facebook Pixel, Microsoft Clarity, Pinterest Tag, and custom analytics — managing all script deployments via Google Tag Manager.
• Developed and managed 40+ HTML email campaigns using Pardot with Salesforce and Marketo integrations, tracking campaign performance and attribution via GA4 and Google Search Console.
• Built and deployed an AI-powered customer support chatbot using Microsoft Copilot Bot Framework, trained on Quark's enterprise product documentation and deployed on the WordPress website with custom UI and script integration.
• Led full UI/UX design for Quark Layout — an AI-based design generation platform similar to Canva — delivering complete design system, user flows, and component specifications; collaborated with developers throughout implementation.
• Mentored 2–3 junior WordPress developers on PHP best practices, custom theme architecture, hooks and filters, performance optimisation, and WordPress security hardening.

Senior UI/UX Engineer | Frontend Developer at Mobile Programming LLC (2015-12 – 2020-07)

Client projects: Mphasis (Bangalore) | Dell (Bangalore) | Reliance Industries (Mumbai) | SAP Labs (Gurgaon)

• Built a full-featured Angular employee management system at Mphasis — implementing component architecture, routing, REST API integrations, and Azure AD authentication — as part of a cross-functional Agile team.
• Delivered UI/UX design and responsive frontend development across enterprise clients including Dell, Reliance, and SAP Labs — producing Figma wireframes, prototypes, and pixel-perfect interfaces across Agile sprints.
• Collaborated with backend developers and QA teams, consistently delivering features on or ahead of schedule.

UI/UX Engineer | Frontend Developer at Impinge Solutions (2014-12 – 2015-12)

• Designed and developed 8+ responsive WordPress websites for clients across retail and finance sectors using custom PHP themes, Bootstrap, and JavaScript.
• Integrated WordPress and Drupal CMS for 5+ client projects, enabling non-technical stakeholders to manage content independently.
• Optimised CSS/JS assets through code splitting, minification, and image compression, improving page load speed across all projects.

Junior Web Developer at Solitaire Infosys (2013-06 – 2014-11)

• Built WordPress websites, UI components, and landing pages for 10+ clients using PHP, HTML5, CSS3, jQuery, and custom WordPress themes — adhering to W3C standards and responsive design principles.
• Collaborated with senior developers on WordPress theme customisation, plugin configuration, and client delivery.

Bachelor of Technology, Computer Science