Sr Manager, Fiber Market Development & JV Partnerships

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T-Mobile's Broadband business is scaling rapidly across both Fixed Wireless Access and Fiber, and the Fiber portfolio is increasingly defined by the quality of the partnerships we form, the markets we choose to enter, and the rigor of the processes we use to evaluate, approve, and operationalize new fiber builds. This role is the functional leader responsible for all three. As the Sr.

Manager, Fiber Market Development & JV Partnerships you will lead a small, high-impact team responsible for the end-to-end lifecycle of T-Mobile's fiber market pipeline - from partner origination and data-driven market evaluation to contract negotiation, operational readiness, and commercial launch.

You will manage a team of analysts, GIS specialists, and operations coordinators, and you will be the primary point of accountability for ensuring that T-Mobile's fiber footprint grows in the right markets, with the right partners, on the right terms. You will be the source of truth across our partner relationships and be directly accountable for the pace and quality of T-Mobile's fiber market expansion.

This is a hybrid role requiring a minimum of 3 days per week in the office.

• Lead the evaluation of prospective fiber builds across T-Mobile's existing and future partner networks, assessing new market opportunities against current partner commitments, contractual obligations, and strategic priorities
• Own the market evaluation process end-to-end: coordinate GIS-based overlap analysis, ML-driven penetration propensity modeling, competitive landscape assessment, and demographic scoring to produce defensible market recommendations
• Partner with the Broadband Data Science team to operationalize a machine learning model and ensure model outputs are translated into actionable market-level insights
• Facilitate markets through internal evaluation processes and external partner review cadences, culminating in market approval by T-Mobile leadership and/or JV Board of Directors
• Develop and maintain the market scoring rubric and evaluation criteria, ensuring consistency, repeatability, and continuous improvement as the fiber portfolio scales
• Produce market summary packages (penetration curves, demographic overlays, competitive positioning, financial expectations) that serve both internal decision-makers and external partner stakeholders

• Own the operational infrastructure that moves markets from approved evaluation to commercial launch, including market order facilitation, market acceptance workflows, and partner handoff processes
• Manage broadband legal tracking and prioritization: ensure all partnership agreements, amendments, and contract actions are tracked, prioritized, and progressing through Legal review within agreed SLAs
• Oversee Docu Sign CLM (Contract Lifecycle Management) facilitation for all fiber partnership agreements, ensuring proper routing, execution, and archival of contractual documents
• Design and maintain pipeline visibility tools (dashboards, trackers, status reports) that give internal stakeholders and external partners clear line-of-sight into where every market and deal sits in the process
• Drive cross-functional coordination across Market Development, Data Science, Legal, Finance, and partner teams to eliminate bottlenecks and maintain pipeline…