Is your job title on Linkedin/CV same as your internal job title?

My internal job title is Lead Portfolio Analyst but my day to day responsibilities include partnering closely with the finance analyst, sales teams, and cross-functional stakeholders to ensure contract compliance and support revenue growth.

I manage the financial compliance and performance tracking for sales agreements, particularly usage based financing deals and their P&L impact. My role involves collecting and analyzing sales data, monitoring contract compliance, calculating customer performance, and generating all necessary reports and reconciliations for internal stakeholders and billing.

Based on this what should be the job title?