Focus on the problem, not blaming character.
Conflict resolution steps
1. Seek to understand their constraint 2. Share your data / concerns calmly 3. Find shared goal 4. Agree on experiment or decision rule 5. Document outcome
STAR outline
Situation: Teammate wanted to put all transforms in one giant SQL file; I wanted modular staging models.
Action: We listed pros/cons (speed of delivery vs testability). We agreed to modularize only the shared dimensions first and keep one mart SQL for the demo deadline, then refactor.
Result: Demo shipped; after demo we modularized without blame. Relationship stayed good.
Fresher tip
Group-project disagreements about Git, deadlines, or design all count if you show maturity.
Interview tip: Never say "they were incompetent." Show empathy + outcome.