Senior Manager of Customer Success, Horizon3
$180-225k
+ eligible for an equity package in the form of stock options
More information about location
Autonomous security solutions
Be an early applicant
Autonomous security solutions
201-500 employees
Be an early applicant
$180-225k
+ eligible for an equity package in the form of stock options
More information about location
201-500 employees
Company mission
To help find and fix attack vectors before attackers can exploit them.
Role
Who you are
- 7+ years of experience in Customer Success, Account Management, or related post-sales roles in cybersecurity or B2B SaaS
- 2–3+ years of direct people management experience, with a track record of hiring, coaching, and leading CSMs to strong outcomes
- Proven success meeting or exceeding goals tied to Net Revenue Retention (NRR), Gross Dollar Retention (GDR), and expansion
- Experience managing strategic customers (Fortune 500), with executive-level relationship management and negotiation skills
- Deep understanding of security operations and/or MSSP business models (e.g., red teaming, vulnerability management, SOC workflows)
- Confident working with technical products and customers - able to translate customer needs into product feedback or tailored success plans
- Strong communicator and storyteller with excellent presentation skills and executive presence
- Comfortable navigating ambiguity and building post-sales programs in a fast-paced, high-growth environment
- Proficient in Gainsight, Salesforce, JIRA, and Confluence
- Bachelor’s degree required; advanced degree or MBA is a plus
What the job involves
- Horizon3.ai is on a mission to help organizations find, fix, and verify exploitable attack paths - before attackers can. As we scale our impact with global enterprises and managed service providers, we're looking for a mission-driven, people-first Manager of Customer Success to lead and grow a high-performing team of CSMs supporting our enterprise, federal, and MSSP customers
- This is a people leadership role first and foremost. You’ll serve as a coach, strategist, and operator, driving performance across the team while directly influencing customer outcomes. You’ll ensure our customers realize value from NodeZero, champion their success internally, and help define what world-class customer success looks like at Horizon3
- Lead & Develop the Team:
- Coach and mentor a team of Customer Success Managers across enterprise, scale, and MSSP segments. Foster a culture of ownership, accountability, and continuous improvement
- Drive Adoption & Value Realization:
- Ensure customers operationalize NodeZero across their environments and workflows - driving measurable improvements in security posture and outcomes
- Own Strategic Customer Relationships:
- Engage directly with executive stakeholders (e.g., CISOs, security leadership) especially within Fortune 500 and strategic partners to align on goals, roadmap, and long-term value
- Enable Expansion & Retention:
- Guide your team to identify and drive expansion opportunities while mitigating risk, improving health scores, and securing renewals
- Collaborate Cross-Functionally:
- Work closely with Sales, Channel, Product, and Support teams to orchestrate seamless onboarding, resolve blockers, and advocate for customer needs
- Build Operational Rigor:
- Own processes and reporting in Gainsight and Salesforce to monitor KPIs, track team performance, and scale consistent success delivery across the lifecycle
- Develop Playbooks & Processes:
- Create repeatable success plans, onboarding journeys, QBR templates, and enablement resources that improve efficiency and outcomes
- Voice of Customer Champion:
- Aggregate structured feedback to inform product and go-to-market strategy. Help shape the roadmap and GTM narratives with customer proof points
Our take
In an era marked by escalating cyber threats and data breaches, safeguarding digital assets has become a high priority across all industries. Amid this landscape, Horizon3.ai stands out as an autonomous security solution by addressing the critical need for robust cybersecurity.
At the heart of Horizon3.ai's mission is NodeZero™, a platform designed to elevate proactive security measures. Using this, customers can verify their security posture and identify potential vulnerabilities through self-service. This proactive approach to cybersecurity effectively thwarts potential exploits and ensures the integrity of their digital infrastructure.
With 2025 funding in hand, the company is poised to further its ambition to develop into an industry-leading cybersecurity company. The infusion of funds will be channelled towards expanding its partner network, refining its offerings and entering the US government market. Horizon3 aims to establish itself as a pivotal player in the evolving autonomous security landscape, a highly lucrative market valued at $80 billion.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
-8% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Jun 2025
$100m
SERIES D
Aug 2023
$40m
SERIES C
Total funding: $187m
Company benefits
- Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities
- Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking
- Flexible Work Environment: Enjoy the convenience and work-life balance that comes with remote work
- Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive
Company HQ
SoMa, San Francisco, CA
Leadership
Snehal Antani
(Co-Founder & CEO)Graduated from the Rensselaer Polytechnic Institute with an MS in Computer Science. Previously worked at IBM as a Lead Architect, at GE Capital as the CIO of Distribution Finance and Splunk as the SVP & GM of Business Analytics & IoT.
Anthony Pillitiere
(Co-Founder)Graduated from the University of Maryland with a Bachelor's Degree in Computer Systems Networking and Telecommunications. Previously worked at the United States Air Force in multiple roles, including Deputy Chief Technology Officer.
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