Senior Customer Success Manager (EMEA)

Company: Horizon3
Apply for the Senior Customer Success Manager (EMEA)
Location: London
Job Description:

Requirements

  • This role requires a background in cybersecurity and someone who is consultative, proactive, and excited to build strong customer relationships across geographies
  • 5+ years in Customer Success, Technical Account Management, Client Services, within a SaaS cybersecurity environment
  • In-depth knowledge of cybersecurity practices and principles; possession of relevant certifications (e.g., CompTIA Security+, CISSP) is highly preferred
  • Deep understanding of enterprise security, information technology, cloud, or offensive security is highly preferred
  • Strong customer acumen—able to align solutions to business priorities and present clearly to both technical and executive stakeholders
  • Experience managing a book of business with revenue targets (ARR, NRR, GRR)
  • Startup or high-growth company experience is preferred; you thrive in fast-paced, ambiguous environments
  • Location: UK, Germany, France, Belgium, Ireland, Italy, The Netherlands or Spain
  • Languages Preferred: French, German, Italian as well as business fluency in English
  • Comfortable with tools like Salesforce, Gainsight, and JIRA; detail-oriented and organized

What the job involves

  • As a Customer Success Manager in EMEA, you will play a key role in scaling and strengthening our international post-sales experience as part of a growing global Customer Success organization
  • You will serve as a strategic advisor to a portfolio of high-value customers, partnering directly with technical and business stakeholders to drive adoption, value realization, retention, and growth
  • You’ll collaborate cross-functionally with Sales, Product, Engineering, and Support while helping shape and evolve the Customer Success experience across the EMEA region
  • Manage a portfolio of EMEA customers as their primary post-sales technical advisor, developing a deep understanding of the NodeZero platform to guide successful adoption
  • Cultivate champions with security leaders—from analysts to CISOs—and guide them through the lifecycle of adoption, expansion, and advocacy
  • Deliver technical onboarding and enablement to drive adoption of NodeZero, including advanced features like Tripwires, Insights, and Rapid Response, ensuring customers realize maximum value
  • Proactively identify customer needs and potential challenges, suggesting solutions that improve their experience and enhance their cybersecurity posture
  • Partner closely with IT and Security teams (SOC, red/blue teams, AppSec, etc.) to help interpret pentest results, prioritize remediation, and guide long-term offensive security strategy
  • Collaborate closely with Sales and Renewals teams to drive retention and growth by identifying expansion opportunities, aligning on account strategy, and ensuring a seamless renewal process
  • Act as a customer advocate, relaying customer feedback and technical issues to our internal teams to help drive the evolution of our product and services
  • Conduct regular check-ins and quarterly business reviews to align on strategy, secure executive buy-in, and showcase business outcomes
  • Contribute to documentation, training materials, and repeatable playbooks to scale technical success across the region
  • Maintain detailed records of customer health and touchpoints using internal CS platforms

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Posted: June 1st, 2026