The JavaScript Developer will be responsible for implementing, maintaining, and optimizing tags using CHEQ (Ensighten) or similar Tag Management Systems (TMS) to support Digital Marketing initiatives. Key responsibilities include building and troubleshooting JavaScript tracking solutions, collaborating with cross-functional teams, debugging and validating tracking, maintaining documentation, and optimizing data layer usage. The role requires strong JavaScript skills, hands-on experience with TMS platforms, and experience with marketing pixels and data layers. The candidate should have experience with Digital Analytics and browser developer tools.