Client Success Manager – Strategic

T-Mobile

Client Success Manager at T-Mobile focused on enhancing relationships within Government and Enterprise segments. Managing onboarding, ongoing support, and account growth for strategic business clients.

Posted 4/23/2026full-timeBellevue • Florida, Nevada, New Jersey, North Carolina, Washington • 🇺🇸 United StatesMid-LevelSenior💰 $87,100 - $157,200 per yearWebsite

About the role

Key responsibilities & impact

Serve as the primary post-sales point of contact for assigned government and enterprise accounts, advocating for customer needs across internal teams and ensuring a positive end-to-end experience.
Build and maintain executive-level relationships with client stakeholders to foster trust, understand business goals, and drive customer satisfaction and loyalty.
Oversee new customer onboarding and training to guarantee a smooth implementation from Day 0 onward.
Educate customers on T-Mobile for Business products, services, and self-service tools (e.g. Account Hub) to accelerate product and solution adoption, ensuring clients realize full value from their investments.
Develop customer success plans and conduct regular health checks.
Proactively monitor account performance and health indicators (usage trends, service quality, billing, NPS, etc.) to identify signs of risk or opportunity.
Lead regular success reviews and QBRs, presenting key performance metrics and insights to client executives.
Recommend action plans to address service gaps or evolving needs.
Take ownership of customer issues and coordinate cross-functional resolution, engaging internal experts to troubleshoot and swiftly resolve problems.
Act as the customer champion in internal discussions, documenting interactions and ensuring service levels are met.
Develop and execute strategies to retain customers and secure renewals, mitigating churn.
Analyze account health data to identify at-risk accounts or partial disconnect requests and address root causes proactively.
Lead contract renewal processes, negotiate terms, and finalize agreements that maintain or grow revenue.
Drive account expansion by identifying and executing cross-sell and upsell opportunities based on customer needs and usage data.
Prepare and present proposals for new solutions, partnering with Sales and Solutions Engineering on complex opportunities that align with customer goals.

Requirements

What you’ll need

Bachelor's Degree Business Administration, Management, or related field (Preferred)
Master's/Advanced Degree Business Administration, Management, or related field (Preferred)
4-7 years Managing customer relationships and account management in business segments such as Government, Strategic, or Enterprise (Required)
2-4 years Coordinating with multiple departments such as sales, engineering, support, and operations to meet contract commitments and resolve issues (Required)
2-4 years Collaborating with sales teams to identify upsell and cross-sell opportunities and develop strategies to increase account value (Preferred)
Client Relationship Management Strong skills in managing client relationships at an executive level, ensuring customer satisfaction and loyalty. (Required)
Cross Functional Relationships Ability to coordinate with multiple departments such as sales, engineering, support, and operations to meet customer needs and resolve issues. (Required)
Strategic Thinking Capability to develop strategic plans for customer account growth through upselling and cross-selling. (Required)
Problem Solving Proficient in identifying problems and coordinating resources to provide effective solutions. (Required)
Leadership Experience in leading teams and managing a distributed workforce to achieve business goals. (Required)
Analytics Ability to analyze customer data to identify trends and opportunities for business improvement. (Required)
Business Acumen Strong understanding of business operations and the impact of customer success on overall business performance. (Required)
Telecommunications Knowledge of telecommunications industry, particularly in wireless technologies, to better understand and serve client needs. (Required)

Benefits

Comp & perks

medical, dental and vision insurance
flexible spending account
401(k)
employee stock grants
employee stock purchase plan
paid time off and up to 12 paid holidays
paid parental and family leave
family building benefits
back-up care
enhanced family support
childcare subsidy
tuition assistance and college coaching
short- and long-term disability
voluntary AD&D coverage
voluntary accident coverage
voluntary life insurance
voluntary disability insurance
voluntary long-term care insurance
mobile service & home internet discounts
pet insurance
access to commuter and transit programs

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

customer relationship managementaccount managementdata analysiscontract negotiationcustomer onboardingcustomer success planningperformance metricsupsellingcross-sellingproblem solving

Soft Skills

strategic thinkingleadershipcommunicationcollaborationcustomer advocacytrust buildingproblem resolutionrelationship managementorganizational skillsanalytical thinking