Sr Finance Manager, T-Ads

At T-Mobile, we invest in YOU!  Our Total Rewards Package ensures that employees get the same big love we give our customers.  All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That’s how we’re UNSTOPPABLE for our employees! We’re looking for a strategic, analytically driven Senior Finance Manager to serve as the dedicated KPI & Business Intelligence lead for the T-Ads Finance team. This is a hands-on individual contributor role built around ownership of KPI frameworks, executive reporting, and BI infrastructure across our T-Ads P&Ls. Starting with the Mobile business as a foundation, this role will scale its scope over time — ultimately owning consolidated KPI reporting and dashboarding across the full T-Ads organization. Beyond KPI ownership, this role will provide FP&A support to the Mobile Finance lead during forecast cycles, bringing strong modeling and analytical depth to the team. The ideal candidate brings strong FP&A fundamentals combined with hands-on BI and data modeling experience — someone equally comfortable in TM1, Excel, and a BI dashboard, who can translate complex data into executive-ready insights and scalable reporting infrastructure. This role is for someone energized by building systems, not just running them.

Using the Mobile P&L as a starting point, design and build a standardized KPI tracking template covering monthly consolidation, variance analysis, and trend reporting — establishing a repeatable framework the broader finance team can adopt. Serve as a key analytical partner to the Mobile Finance lead, supporting monthly forecast cycles through model maintenance, driver-based revenue analysis, and scenario planning. Expand the KPI framework beyond Mobile to cover all P&Ls within the T-Ads space. Own executive KPI reporting and monthly consolidation across business units, synthesizing insights into clear narratives for senior leadership. Partner with Finance Managers and the BI team to extend the TM1 planning cube beyond financial data to incorporate operational KPIs. Drive the build-out of TM1-sourced dashboards in Power BI or equivalent tools, enabling self-serve reporting across the organization. Partner with the centralized systems team to migrate driver-based financial models into Oracle, improving planning scalability and integration across the enterprise. Develop and deliver monthly reporting packages, Quarterly Business Reviews, and ad hoc KPI insights for P&L leaders and senior stakeholders across T-Ads. Partner with Data and BI teams to define and maintain KPI taxonomies, data pipelines, and reporting infrastructure that support both individual P&L teams and the broader O&O consolidation function. Align with the T-Ads consolidation FP&A team on corporate deliverable inputs including R&O management, Forecast, Budgets, and LRPs. Additional analysis as required for internal FP&A deliverables, examples of which are Investor Day information and Scenario Planning Qualifications Bachelor’s degree in Finance, Accounting, Economics, or related field; MBA or CPA a plus. 10+ years of experience with 5+ years in financial planning & analysis (FP&A), preferably supporting Advertising, Media, or Technology organizations. Hands-on experience with BI tools (e.g., Power BI, Tableau, Looker); proficiency in SQL and Snowflake for data querying and analysis — these are hard requirements for this role, not nice-to-haves. Advanced Excel and financial modeling skills; experience with enterprise planning and ERP tools including TM1 and Oracle — both are strongly preferred given the long-term systems roadmap for this role. Demonstrated experience building data models, KPI frameworks, or analytics infrastructure — ability to independently pull,