Client Success Manager – Enterprise

T-Mobile

Client Success Manager focusing on customer relationships and retention in Government and Enterprise sectors at T-Mobile. Responsible for onboarding, product adoption, and account expansion strategies.

Posted 4/29/2026full-timeNew York City • Florida, Nevada, New Jersey, New York, Texas • 🇺🇸 United StatesMid-LevelSenior💰 $87,100 - $157,200 per yearWebsite

Tech Stack

Tools & technologies

PMP

About the role

Key responsibilities & impact

Serve as the primary post-sales point of contact for assigned government and enterprise accounts
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)
Proactively monitor account performance and health indicators to identify signs of risk or opportunity
Lead regular success reviews and QBRs, presenting key performance metrics and insights to client executives
Take ownership of customer issues and coordinate cross-functional resolution
Develop and execute strategies to retain customers and secure renewals
Drive account expansion by identifying and executing cross-sell and upsell opportunities

Requirements

What you’ll need

Bachelor's Degree in Business Administration, Management, or related field (Preferred)
Master's/Advanced Degree in 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)
Strong skills in managing client relationships at an executive level, ensuring customer satisfaction and loyalty (Required)
Ability to coordinate with multiple departments such as sales, engineering, support, and operations to meet customer needs and resolve issues (Required)
Capability to develop strategic plans for customer account growth through upselling and cross-selling (Required)
Proficient in identifying problems and coordinating resources to provide effective solutions (Required)
Experience in leading teams and managing a distributed workforce to achieve business goals (Required)
Ability to analyze customer data to identify trends and opportunities for business improvement (Required)
Knowledge of telecommunications industry, particularly in wireless technologies (Required)
Certified Customer Experience Professional (CCXP) (Preferred)
Project Management Professional (PMP) (Preferred)
Certified Sales Executive (CSE) (Preferred)
Legally authorized to work in the United States

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
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 onboardingaccount managementcross-sellupsellstrategic planningdata analysisproblem solvingperformance metricscustomer satisfactiontelecommunications

Soft Skills

client relationship managementcommunicationleadershipcollaborationorganizational skillscustomer loyaltystrategic thinkingproactive monitoringissue resolutionteam management

Certifications

Certified Customer Experience Professional (CCXP)Project Management Professional (PMP)Certified Sales Executive (CSE)