Unity WebGL Developer Needed for Custom Ad SDK Development

We are looking for an experienced developer to build a custom advertising SDK for Unity WebGL games that are hosted and played directly in web browsers on our HTML5 games platform.
Currently, our Unity WebGL games use Google H5 Beta ad tags implemented directly within the game's HTML shell. However, this setup is limiting in terms of scalability, demand management, and monetization control.
We want to move towards a platform-level ad integration system similar to CrazyGames or Playgama, where:
• Ads are controlled externally by the website platform
• Games communicate with the platform through a unified SDK layer
• Ad logic is not hardcoded into each Unity WebGL build
• The website handles ad requests, auctions, and delivery
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Project Goal
Develop a Custom Unity WebGL Ad SDK that allows our browser-hosted games to:
- Trigger Rewarded Ads
- Trigger Interstitial Ads
- Pause / Resume gameplay correctly
- Handle Ad Start / Finish / Skip events
- ...