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Senior Customer Success Manager - Multi-lingual

Vonage

People Ops

Full-time

On-site

Spain, Madrid

Posted on 7/6/2026

Job Description
Join Vonage and help us innovate cloud communications for businesses worldwide
Vonage Communications APIs

As an emerging leader in the $10B+ communications API market, we empower general brands to connect better with their customers, employees, and partners through transformative communications experiences. Vonage API solutions empower organizations to build their custom omnichannel communications structure, reaching and engaging customers on their preferred schedule and channel, including voice, video, and messaging.

Why this role matters

We are looking for a seasoned, customer-obsessed Senior Customer Success Manager to own and grow a portfolio of strategic enterprise accounts across our communications API suite. You will serve as a trusted advisor deeply embedded in your customers' business and technical strategies, working with stakeholders from developer teams to C-suite executives to drive platform adoption,



long-term value, and revenue growth.

Your key responsibilities
- Build and maintain multi-threaded relationships with stakeholders at all levels, from technical teams to senior leadership, acting as a strategic partner and trusted advisor.
- Lead the development of outcome-driven success plans aligned to each customer's business objectives; proactively identify and mitigate risks to customer health.
- Drive adoption and ROI across Vonage's API portfolio (SMS, WhatsApp, RCS, Voice, Video, and Verify) and champion expansion opportunities.
- Act as the voice of the customer within Vonage, partnering with Support, Product, and Engineering to resolve complex challenges and lead escalation management.
- Own the renewal process end-to-end, forecasting accurately and executing strategies to maximize retention and net revenue retention (NRR); identify upsell and cross-sell opportunities in partnership with Sale

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