The Sr Manager, Commercial Marketing, T-Fiber is a leadership role responsible for driving new customer acquisition, go-to-market execution, channel strategy, and data-driven performance management for T-Mobile's fiber broadband business. This role leads a multidisciplinary team spanning commercial marketing and data science. The leader owns the full commercial agenda: pricing and promotional strategy, GTM readiness for new fiber market launches, in-quarter performance management, and long-term subscriber growth. This role serves as the connective tissue between Marketing, GTM, Pricing, Operations, Channels, Analytics, and FP&A. Requires a proven track record in scaling multi-billion-dollar portfolios, comfort translating data science outputs into commercial decisions, and the ability to present confidently to the C-Suite on a regular basis. This is a hybrid role requiring a minimum of 3 days per week in the office. Responsibilities: • Lead and develop a multidisciplinary team of Senior Commercial Marketing Managers (offer planning, quarterly growth steering, and channel performance) and Data Scientists focused on fiber penetration modeling and ML-driven optimization. • Foster a high-accountability, growth-oriented team culture with emphasis on career development, cross-functional collaboration, and data-informed decision-making. • Coach team members on GTM execution, commercial strategy, stakeholder management, and translating analytical outputs into actionable business recommendations. • Set clear priorities, milestones, and performance expectations aligned to quarterly and annual business targets. • Lead the commercial marketing function for T-Fiber with ownership of pricing and promotional decisions, segment identification and selection, value proposition definition, and acquisition performance management across consumer segments. • Oversee offer planning and strategy for the fiber portfolio - guiding the team in developing pricing, promotions, and product positioning (including MRC, CLV, CapEx, and tenure modeling) that align with growth objectives. • Drive full P&L management across the fiber broadband portfolio, with weekly, quarterly, annual, and 5-year targets and horizon planning. • Lead quarterly and annual planning against customer targets, load mix, and activating MRC; develop contingencies to ensure delivery of customer targets and consistent share of gross adds. • Seek and capture opportunities based on competitive landscape, business performance, and customer insights; provide strategic recommendations on offers and acquisition programs. • Manage offer portfolio performance including tracking of results, market investment budget, competitive wargaming, and developing multiple plan iterations to respond to changes in the competitive environment. • Own the end-to-end GTM strategy for new and emerging fiber markets, from market acceptance through initial penetration targets - developing and continuously refining GTM playbooks that translate corporate strategy into market-specific launch plans. • Lead the GTM Readiness process - a structured, cross-functional launch gate ensuring readiness across Operations, Channels, Marketing, and Reporting before each market goes live. • Partner with Channel teams to develop and deploy sales enablement programs, training curricula, and incentive structures tailored to fiber market conditions. • Monitor channel performance in new markets, identifying conversion gaps and deploying targeted interventions to accelerate sales velocity. • Build and maintain scalable launch infrastructure - templates, checklists, scorecards, and governance rhythms - that support a high-velocity launch cadence without sacrificing quality. • Oversee the Fiber Data Science team, guiding prioritization of ML and statistical modeling initiatives - including penetration permutation models, cohort-level scorecards, and regional cost optimization - ensuring outputs are actionable and tied to commercial outcomes. • Champion a data-driven culture across the commercial team, ensuring offer strategy, GTM decisions, and channel investments are consistently grounded in rigorous analysis. • Translate complex ML outputs and data insights into clear, executive-ready narratives that inform commercial strategy and leadership decision-making. Qualifications: • Bachelor's Degree and 7 years of related work experience, OR a combination of education and experience deemed equivalent • 7+ years of marketing experience • 5+ years in one or more of the following categories: software/hardware, web, telecommunications, consumer electronics, or consumer packaged goods, with a focus on Marketing, Product development or sales • Strong understanding of fiber, voice and data services and products. • At least 18 years of age • Legally authorized to work in the United States Base Pay Range: $121,700 - $219,700 Corporate Bonus Target: 20% The pay range above is the general base pay range for a successful candidate in the role. The successful candidate's actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay will vary within this range. At T-Mobile, employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role. Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee's eligible earnings in the prior year. Certain positions in Customer Care are eligible for monthly bonuses based on individual and/or team performance. To find the pay range for this role based on hiring location, https://paylookup.t-mobile.com/paylookup?reqID=REQ359245¶dox=1 At T-Mobile, our benefits exemplify the spirit of One Team, Together! A big part of how we care for one another is working to ensure our benefits evolve to meet the needs of our team members. Full and part-time employees have access to the same benefits when eligible. We cover all of the bases, offering medical, dental and vision insurance, a flexible spending account, 401(k), employee stock grants, employee stock purchase plan, paid time off and up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually - paid parental and family leave, family building benefits, back-up care, enhanced family support, childcare subsidy, tuition assistance, college coaching, short- and long-term disability, voluntary AD&D coverage, voluntary accident coverage, voluntary life insurance, voluntary disability insurance, and voluntary long-term care insurance. We don't stop there - eligible employees can also receive mobile service & home internet discounts, pet insurance, and access to commuter and transit programs! To learn about T-Mobile's amazing benefits, check out www.t-mobilebenefits.com. Never stop growing! As part of the T-Mobile team, you know the Un-carrier doesn't have a corporate ladder-it's more like a jungle gym of possibilities! We love helping our employees grow in their careers, because it's that shared drive to aim high that drives our business and our culture forward. By applying for this career opportunity, you're living our values while investing in your career growth-and we applaud it. You're unstoppable!