Customer Success Manager

Sinch is pioneering the way the world communicates. More than 150,000 businesses – including Google, Uber, Pay Pal, 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.

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.

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‑oriented 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…