Customer Success Manager – III

Sinch

Customer Success Manager III at Sinch serving high-value customers and driving adoption. Collaborating cross-functionally to ensure customer satisfaction and business growth.

Posted 6/19/2026full-timeAtlanta • Colorado, Illinois, Texas • 🇺🇸 United StatesMid-LevelSenior💰 $92,000 - $115,000 per yearWebsite

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

customer lifecycle managementvalue realization frameworkssuccess metricsaccount health managementstrategic business reviewsrenewal strategiesexpansion strategies

Soft Skills

strategic advisorcommunicationexecutive presencecollaborationrelationship managementdata-driven approach

Tools & Technologies

CS platformsCRMBI tools

Industry Keywords

telecommunicationsmobile messagingenterprise customer portfoliosmid-market customer portfolios

About the role

Key responsibilities & impact

As a Customer Success Manager III, you will serve as a strategic advisor and trusted partner to our most complex and high-value customers.
You’ll lead the charge in long-term success planning, aligning product capabilities with business outcomes to drive adoption, deliver value, and ensure sustained retention and growth.
With a deep understanding of customer goals and a data-driven approach, you’ll proactively manage account health and uncover opportunities that directly influence renewal and expansion strategies.
In this role, you’ll own executive-level relationships, lead strategic business reviews and roadmap discussions, and navigate multi-stakeholder environments to maintain alignment and momentum.
You’ll collaborate cross-functionally with Sales, Product, Marketing, Implementation, and Support to deliver a seamless, high-impact customer experience, while continuously surfacing customer insights that shape internal priorities and improvements.

Requirements

What you’ll need

A minimum of 5 years related experience in telecommunications, mobile messaging, or an adjacent technology field, with a bachelor's degree; or 3 years and a master's degree; or a PhD without experience; or equivalent industry experience.
Proven success managing complex enterprise or mid-market customer portfolios and leading high impact engagements.
Strong understanding of customer lifecycle management, value realization frameworks, and success metrics.
Excellent verbal and written communication and executive presence; comfortable interfacing with Director, VP, and C-Level customer contacts.
Experience working with CS platforms, CRM, and BI tools to drive decisions.
Track record of driving both retention and expansion within a book of business.

Benefits

Comp & perks

STAY HEALTHY: We offer comprehensive market competitive medical, dental, and vision plans. A variety of supplemental plans are also provided to meet your individual needs including access to telehealth for all participants.
CARE FOR YOURSELF: Take advantage of our free virtual counselling resources through our global Employee Assistance Program. Your mental health is as important as your physical health.
SECURE YOUR FUTURE: Plan for your future with our Roth and Pre-tax 401(k) options including an employer match for all participants.
TAKE A BREAK: Enjoy a generous paid time off program. We value balance and understand that performance at work requires time to rest at home and/or rejuvenate on vacation.
PUT FAMILY FIRST: We know that families can be built in a variety of ways; therefore, we offer paid parental leave and family planning support.
WORK WHEREVER: Our flexible remote work offerings allow you to work wherever you are the most productive and successful. It is what you do, not where you work, that matters.
MAKE AN IMPACT: Support betterment in your community and beyond by taking paid time off to support a volunteer program of your choice.