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Posted Feb 28, 2026

**Experienced Customer Success Manager – Accelerating Customer Adoption and Retention in Cybersecurity**

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At arenaflex, we're revolutionizing the way organizations protect themselves from adversarial AI attacks. Our innovative, patent-pending solution has been recognized by prestigious awards such as RSA's Innovation Sandbox Winner, CB Insights AI 100, CyberTech 100, and SC's Most Promising Early-Stage Start-up. We're now seeking an experienced Customer Success Manager to join our team and drive successful customer experiences. **About arenaflex** arenaflex is a venture-backed company that has recently closed a $50M funding round led by M12, Microsoft's Venture Fund, and Moore Strategic Ventures. We're a completely remote global team, and we're intentional about getting the team together a couple of times a year. We offer a generous stipend for your home office setup, annual upgrades to ensure you have a comfortable workspace, and a monthly stipend for internet/phone expenses. **Job Summary** As the Customer Success Manager at arenaflex, you will be responsible for designing and optimizing the people, processes, and tools that drive successful customer experiences. You will work closely with Go to Market, Professional Services, Product, and Engineering leadership to ensure a seamless customer journey, aligning customer needs with product development, and driving both retention and expansion opportunities. **Key Responsibilities** * Develop and execute customer success strategies to improve customer onboarding, adoption, engagement, and retention * Collaborate with leadership from Go to Market, Professional Services, Product, and Engineering to ensure a seamless customer experience and influence product roadmap decisions * Build and maintain strong relationships with key customers, ensuring their success and acting as their trusted advisor * Capture and communicate customer feedback to drive continuous product and service improvements * Manage and optimize our customer portal, ticketing system(s), and knowledge base * Evaluate and recommend new tools that enhance customer experience * Establish and maintain data governance and hygiene processes to ensure data accuracy and integrity * Establish key performance metrics for customer health, satisfaction, and revenue impact, using data to refine customer success strategies * Recruit, mentor, and develop a high-performing Customer Success team, fostering a culture of customer-centricity **Essential Qualifications** * 5-7 years of experience in Customer Success, Account Management, Technical Account Management, or a related field, with at least 3 years in a leadership role, preferably within cybersecurity, SaaS, or related enterprise technology * Ability to design, implement, and scale customer success initiatives while solving complex customer challenges * Executive presence with the ability to engage and influence customers, partners, and internal stakeholders * Experience leveraging customer success platforms and analyzing key metrics to drive decision making * Proven experience hiring, mentoring, and developing customer success teams in a fast-paced environment **Preferred Qualifications** * Experience scaling Customer Success at a Series A/B startup * Experience in pre-sales, post-sales, or technical account management * Certifications in Cybersecurity, Customer Success, or similar * Experience with US Federal customers **Why Join arenaflex?** * Attracting and retaining the very best people is our #1 priority. That's why we offer our team best-in-class benefits, including: + Fully Remote: We are a completely remote global team. Though we're distributed, we are intentional about getting the team together a couple of times a year. + Flexible Time Off: Enjoy unlimited and flexible time off for all salaried employees, in addition to 15 paid company holidays. + Commitment to Learning and Development: We support personal growth and education through a dedicated L&D fund that can be used for training, conferences, certifications, and industry events. + Diversity, Equity, and Inclusion: We are committed to building a diverse team with individuals from various backgrounds, experiences, abilities, and perspectives, and we are proud to be an equal opportunity employer. **How to Apply** If you're passionate about customer success and want to join a revolutionary company that's changing the way organizations protect themselves from adversarial AI attacks, today!