Hire Google Ad Manager Developers

Google Ad Manager (formerly DoubleClick for Publishers / DFP) is Google’s ad server for publishers. It allows website publishers to manage their own advertising inventory – defining ad units, setting up ad campaigns, targeting ads to specific audiences, and managing revenue from multiple demand sources including Google AdSense, direct advertisers, and programmatic demand through header bidding.

GAM is distinct from Google AdSense. AdSense is a simple advertising programme where Google automatically selects and serves ads. GAM is a full ad server that gives publishers control over their inventory management, advertiser relationships, and yield optimisation. Publishers with significant traffic – typically media sites, news publishers, and high-traffic content sites – use GAM rather than AdSense because it provides more control and higher revenue potential through direct ad sales and header bidding.

On WordPress, GAM integration involves placing the GAM ad tag JavaScript in the site header, defining ad unit slots in WordPress templates, and managing the ad loading in a way that does not negatively impact Core Web Vitals. Header bidding implementation – using Prebid.js or a managed header bidding solution alongside GAM – adds significant complexity and requires developer expertise to implement correctly. How To Set Up Cloudflare WordPress.

Google Ad Manager + WordPress work typically involves:

• Initial GAM implementation – placing the GPT (Google Publisher Tag) JavaScript on the site, defining ad slots in WordPress templates, and verifying ad delivery in GAM.
• Ad unit placement optimisation – implementing ad units in positions that maximise viewability and revenue without negatively affecting user experience or Core Web Vitals.
• Lazy loading ad implementation – loading ads as users scroll rather than on page load, improving initial page load speed while maintaining ad revenue.
• Header bidding setup – implementing Prebid.js alongside GAM to increase ad revenue by introducing competition from multiple demand sources.
• GAM and page speed reconciliation – resolving conflicts between GAM’s JavaScript loading and Core Web Vitals scores, particularly Cumulative Layout Shift caused by ad slots that shift page content when they load.
• Migrating from AdSense to GAM or from one ad implementation to another.

Google Ad Manager implementation requires both WordPress front-end development skills and advertising technology knowledge. Look for developers who have implemented GAM on publisher sites specifically – not just WordPress developers who have added simple AdSense code, and not just ad tech specialists who have not worked in WordPress.

For Core Web Vitals-sensitive implementations, ask specifically how they handle Cumulative Layout Shift (CLS) from ads. Ads that load after the page content cause layout shifts that damage CLS scores. Reserving space for ad slots before the ad loads – using CSS min-height on ad containers – is the correct approach but needs to be implemented carefully.

For header bidding projects, ask whether they have implemented Prebid.js before. Header bidding is complex – it requires configuring bidder adapters for each demand partner, setting bid timeouts, and integrating Prebid with GAM’s price priority structure. This is a specialised skill beyond basic GAM implementation.

Common Google Ad Manager + WordPress problems: How To Fix Core Web Vitals WordPress.

• Ads not serving on the page – the GPT script is not loading correctly, the ad unit path in the WordPress template does not match the GAM network code and unit hierarchy, or no line items are active in GAM for that unit. Check the browser console for GPT errors and verify the ad unit path against GAM.
• Ads causing significant CLS (layout shift) – ad slots are not reserving space before the ad loads. Add min-height to ad containers matching the expected ad size to prevent layout shifts.
• Ad loading slowing page render – GPT JavaScript is loading synchronously in the head, blocking page rendering. Load GPT asynchronously and use lazy loading for below-the-fold ad units.
• Ads not respecting GDPR consent – the GAM implementation is not integrated with the site’s consent management platform. GAM supports restricted data processing and non-personalised ads for users who have not consented – configure this correctly to comply with GDPR requirements.

GAM ad implementations need ongoing maintenance as the site evolves. New page templates need ad slots defined. Changes to page layout affect ad unit positions and potentially viewability. Ad unit performance should be reviewed periodically to identify units that are underperforming and could be repositioned or resized.

Google periodically updates the GPT (Google Publisher Tag) JavaScript. The recommended approach is loading GPT from Google’s CDN rather than a local copy, which means the GPT version updates automatically. Custom GPT implementations or ad manager plugins that bundle GPT should be updated when new GPT versions release.

When posting a Google Ad Manager project on Codeable, describe the current ad setup – whether GAM is already configured, which ad units exist, and what the specific problem or requirement is. For new implementations, describe the site traffic scale, the ad unit types needed (banner, in-content, sticky), and whether header bidding is in scope.