Technical Knowledge Questions
Before hiring a GTM expert, assess their technical foundation. Ask them to explain data layers, variable scope, and trigger hierarchy. Their answers reveal their understanding of GTM fundamentals.
- How would you implement cross-domain tracking?
- Explain the difference between Universal Analytics and GA4 tracking
- What’s your approach to testing complex tag implementations?
- How do you document GTM configurations?
Platform-Specific Experience
Ask about their experience with your specific platforms. E-commerce experts differ from SaaS specialists. Someone experienced with Shopify may lack WooCommerce knowledge.
Privacy and Compliance Knowledge
A good GTM expert understands GDPR, CCPA, and other privacy regulations. They should explain how to implement compliant tracking without compromising data quality.
Project References
Request case studies or references from previous projects. A strong GTM expert should demonstrate measurable improvements: increased conversion accuracy, reduced tracking gaps, or faster data implementation.
Problem-Solving Approach
Ask how they approach troubleshooting. GTM problems often have multiple solutions. Expert thinking includes debugging methodology, testing rigor, and documentation practices.
Final Assessment
Choose experts who communicate clearly about technical concepts, understand your industry, and can demonstrate concrete results from previous work.