Build preparation around one role and a small number of detailed examples. You should be able to explain the problem, what you personally did, the alternatives you considered and the result.
For a useful self-check, give the same project explanation twice: once to a specialist and once to someone outside your field. Both versions should preserve the decision and its business consequence.
1. Connect your examples to the published skills
Mastercard identifies curiosity, collaboration, adaptability, integrity, critical thinking and growth. Select true examples where those qualities changed your actions. Include a mistake or revision so the account shows learning, rather than only a polished outcome.
2. Choose a role-specific rehearsal
For engineering, work through a problem aloud and explain edge cases. For product, design an improvement around one user need and a measurable outcome. For consulting, diagnose a business problem before calculating an answer. These are suggested exercises, not reported questions.
3. Practice commercial reasoning for consulting
Use an invented scenario such as a merchant deciding whether to introduce a new service. Separate demand, price, cost and implementation risks; estimate the break-even point and state your assumptions. Conclude with a recommendation and one piece of missing evidence.
4. Make your motivation concrete
Prepare a short explanation linking the advertised work to a project you enjoyed and a skill you want to deepen. A specific connection to the team is more useful than describing Mastercard only as a well-known brand.