It makes sense since every other department has numbers to back their performance but it's tough to put one together for the engineering team.
Before you say "trusting your team is enough" ... it's really not.. My team trusts one another but its no replacement for having concrete data to:
1. Show the larger org 2. Help us improve internally 3. See the effects of our changes
Any suggestions?
I want to challenge your assertion that every other department has numbers to back their performance. I am skeptical this is true. I don't image HR can bring a meaningful set of numbers to the table demonstrating month to month or quarterly improvement.