Sinch

Customer Success Manager UK&I

United Kingdom full-time Mid GBP29,000 - GBP44,000
full-time Mid level Customer Service Salary listed Curated
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About the role

Sinch is pioneering the way the world communicates. More than 150,000 businesses - including Google, Uber, PayPal, Visa, Tinder, and many others - rely on Sinch’s Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email.
Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey.
At Sinch we “Dream Big”, “Win Together”, “Keep it simple”, and “Make it Happen”. These values are our foundation!
About the role
Sinch is building a Customer Success organisation for its enterprise customers across EMEA. As a CSM, you’ll be the strategic adviser for our most important and complex customers. These are large, multi-channel, multi-country relationships where the stakes are high and the conversations happen at executive level.
You’ll make sure these customers get measurable value from Sinch, see risk before it becomes churn, and bring new ideas to the table. You’ll work as a pair with the Account Manager on each account, supported by our global Onboarding and Customer Excellence teams and Sales Engineering.

Key Responsibilities

Be the strategic adviser for a portfolio of accounts, accountable for their health, adoption and retention.

Build and maintain relationships with customer executives, owning the conversation about value and outcomes alongside the Account Manager’s commercial relationship.

Lead innovation sessions and strategic workshops. Use the customer’s goals and usage data to show where Sinch can do more, with Sales Engineering and Account Manager turning the outcomes into solutions and opportunities.

Build success plans with each customer and run executive business reviews that show measurable impact.

Monitor health in depth (usage, traffic, quality, support and commercial signals), spot risk early, and lead the response, including complex escalations involving global teams.

Coordinate Onboarding, Customer Excellence, Support, Sales Engineering and Product so your customers experience one Sinch.

Bring structured, evidence-based customer insight back to Product.

Use AI and automation to go deeper on your accounts (research, preparation, risk signals) and share what works with the team.

Help raise the team’s practice by sharing your playbooks and coaching colleagues who are new to Customer Success.

Requirements

3+ years in Customer Success, account management or technical account management, including several years owning a small number of large, complex enterprise customers

A track record of retaining and growing high-value accounts. You can walk us through an account you saved or transformed.

Confidence with executives: you’ve run executive business reviews and strategy workshops with C-level and VP-level customer stakeholders, and they asked you back

Strong facilitation and storytelling skills: you can turn data into a clear point of view and lead a room

Comfort with technology: you understand how customers integrate and use API- or platform-based products, can read usage data to spot risk and opportunity, and hold credible conversations with customer engineering teams, knowing when to bring in Sales Engineering

Experience coordinating complex, multi-stakeholder, multi-country accounts across a matrix organisation

Curiosity about AI, with real examples of how you’ve used it in your work

Experience with Salesforce and a CS platform (Gainsight or similar)

University degree preferred, or equivalent professional experience

Willingness to travel regularly across UK&I

Our corporate language is English, please submit your application in English.
At Sinch, we value learning, embrace change, and offer opportunities for personal and professional growth. Unfortunately, we are not supporting relocation at this time.
Applicants must:
• Hold a British citizenship.
• Have a valid British work permit.

About our hiring process
We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel.
We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: . No matter who you are, we hope you find an exciting path forward - hopefully with us!

The annual base salary for this position ranges from £29,000 to £44,000, plus a variable compensation component to be determined. Factors which may affect pay within this range may include skills, education, experience, and other qualifications.
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use these suggested prompts to prepare. They are not questions supplied by the employer.

Mid
API integration Content Writing CRM Customer Service Digital Marketing Mid level full-time

Practice questions

  1. Tell us about work you have done that is close to the Customer Success Manager UK&I role.
  2. How would you approach your first 30 days at Sinch?
  3. Which of API integration, Content Writing and CRM have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, Content Writing and CRM.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Customer Success Manager UK&I role at Sinch. My relevant experience is [your example], where I [your action] and achieved [your result].

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