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Horizon3.ai is a fast-growing, remote-first cybersecurity company that enables organizations to proactively identify and fix exploitable attack vectors before criminals exploit them. The flagship product, NodeZero, delivers production-safe autonomous pentests and security assessments that scale across internal, external, cloud, and hybrid environments. The company serves organizations from small educational institutions to Global 100 enterprises, including ITOps/SecOps teams, consulting pentesters, MSSPs, and MSPs.
As a Customer Success Associate in EMEA, you will be a strategic advisor to a portfolio of mid-market customers, driving adoption, value realization, retention, and growth. You will serve as the primary post-sales technical advisor, developing deep expertise in the NodeZero platform and guiding customers through their security journey.
Key responsibilities include:
- Managing a portfolio of EMEA mid-market customers and cultivating champions with security leaders from analysts to CISOs
- Delivering technical onboarding and enablement to drive adoption of advanced features like Tripwires, Insights, and Rapid Response
- Proactively identifying customer needs and challenges, suggesting solutions to improve their cybersecurity posture
- Partnering with IT and Security teams (SOC, red/blue teams, AppSec) to interpret pentest results and guide offensive security strategy
- Collaborating with Sales and Renewals teams to identify expansion opportunities and drive retention and growth
- Acting as a customer advocate, relaying feedback and technical issues to internal teams
- Conducting regular check-ins and quarterly business reviews to align on strategy and showcase business outcomes
- Contributing to documentation, training materials, and repeatable playbooks to scale technical success across the region
- Maintaining detailed customer health records using internal CS platforms
Horizon3.ai is a 100% remote company founded by a fusion of former U.S. Special Operations cyber operators, startup engineers, and cybersecurity practitioners. The culture emphasizes respect, collaboration, ownership, and results.
REQUIREMENTS:
- 3+ years in Customer Success, Technical Account Management, or Client Services within a SaaS cybersecurity environment
- In-depth knowledge of cybersecurity practices and principles; relevant certifications (CompTIA Security+, CISSP) highly preferred
- Deep understanding of enterprise security, information technology, cloud, or offensive security highly preferred
- Strong customer acumen—able to align solutions to business priorities and present clearly to technical and executive stakeholders
- Experience managing a book of business with revenue targets (ARR, NRR, GRR)
- Startup or high-growth company experience preferred; ability to thrive in fast-paced, ambiguous environments
- Location: UK, Germany, France, Spain, or The Netherlands
- Comfortable with Salesforce, Gainsight, and JIRA; detail-oriented and organized
