Senior Enterprise Customer Success Manager – Strategic Security Programs | US East Region

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Senior Enterprise Customer Success Manager – US East Region

About arenaflex

At arenaflex, we were founded on a powerful belief: that every organization deserves to operate with confidence in a secure digital landscape. Our journey began in 2013 when our founders recognized that traditional security testing had significant room for improvement. Today, we stand at the forefront of a revolutionary approach to offensive security testing, helping organizations of all sizes—from ambitious startups to Fortune 500 enterprises—identify vulnerabilities before malicious actors can exploit them.

Our innovative platform combines cutting-edge SaaS technology with an exclusive global community of elite security testers, known as the arenaflex Core. We accept only the top 5% of applicants into our tester community, ensuring that every engagement delivers exceptional value. With over 400 carefully vetted security professionals conducting thousands of assessments annually, arenaflex has become synonymous with excellence in penetration testing and security validation.

What sets us apart is our commitment to making enterprise-grade security accessible, efficient, and collaborative. Organizations can initiate a comprehensive pentest in as little as 24 hours, with results that integrate seamlessly into modern development cycles. We believe that security shouldn't slow down innovation—it should enable it.

arenaflex is an Equal Opportunity Employer, and we take pride in fostering a diverse, inclusive workforce where every individual can thrive. We believe that diverse perspectives strengthen our ability to serve customers effectively and drive innovation. When you join arenaflex, you join a community where your authentic self is your greatest asset.

The Role

We're seeking an accomplished Senior Enterprise Customer Success Manager to join our growing Enterprise team and play a pivotal role in shaping how our customers build and execute world-class security testing programs. This isn't your traditional account management role—it's a strategic partnership position where you'll be instrumental in helping organizations transform their security posture.

As a Senior Enterprise Customer Success Manager at arenaflex, you'll serve as the trusted advisor to some of our most sophisticated customers, working directly with C-level executives, Chief Information Security Officers (CISOs), and security leadership teams. You'll be responsible for driving adoption, ensuring retention, identifying growth opportunities, and most importantly, creating genuine value that makes our customers' security programs successful.

This role demands someone who thrives at the intersection of strategy and execution—who can envision long-term security roadmaps while also rolling up their sleeves to ensure tactical success. If you're naturally curious, perpetually proactive, and motivated by the success of others, you'll find an incredible home at arenaflex.

What You'll Do

As a Senior Enterprise Customer Success Manager, your responsibilities will span the entire customer lifecycle:

• Strategic Account Leadership: Own and cultivate comprehensive relationships with your assigned enterprise clients, serving as their primary point of contact and advocate within arenaflex. You'll be responsible for driving adoption metrics, ensuring renewal retention, identifying expansion opportunities, and maintaining exceptionally high customer satisfaction scores.


• Trusted Advisory Partnership: Establish yourself as a trusted strategic advisor to each customer, understanding their business objectives, security challenges, and risk tolerance. Use this insight to recommend tailored security testing programs that align with their goals and deliver measurable outcomes.


• Value Acceleration: Proactively identify opportunities to expand the value customers receive from arenaflex services. Develop and execute account growth strategies that align with customer success metrics and business priorities.


• Voice of the Customer: Serve as the internal champion for customer needs, working closely with Product, Engineering, Sales, and Marketing teams to ensure customer feedback drives meaningful improvements in our platform and service delivery.


• Program Development: Collaborate with customers to design and implement comprehensive security testing programs that include penetration testing, vulnerability assessments, and continuous security validation.


• Executive Relationship Management: Interface confidently with both internal and external C-level executives, presenting strategic recommendations, discussing program performance, and negotiating renewals and expansions.


• Performance Monitoring: Monitor day-to-day service execution, track key performance indicators, and proactively address any issues before they impact customer satisfaction or program effectiveness.


• Strategic Planning: Balance high-level strategic planning with hands-on tactical execution. Help customers design long-term security roadmaps while simultaneously driving near-term results that demonstrate immediate value.


• Goal Setting & Achievement: Work with customers to establish critical success metrics and key performance indicators (KPIs), then partner with them to achieve these outcomes through thoughtful program execution.


• Renewal Excellence: Manage the annual renewal process with precision and foresight, ensuring uninterrupted service while identifying opportunities for expansion or improvement during the renewal conversation.


• Upsell Identification: Systematically identify and develop upsell opportunities that align with customer needs—whether that's expanding test coverage, adding additional security services, or extending programs to new business units.


• Escalation Management: Program manage account escalations, working cross-functionally to resolve complex issues while maintaining customer confidence and satisfaction.


• Sales Collaboration: Partner directly with the Sales team to deliver a seamless customer experience, ensuring smooth transitions and coordinated engagement strategies.

What You Bring

We're looking for candidates who combine deep expertise with exceptional interpersonal skills:

• Experience: 3-5 years of proven experience in Enterprise Customer Success, with a track record of managing complex, high-value customer relationships.


• Approach: A consultative selling and service approach that balances high-level strategic thinking with hands-on tactical execution. You should be equally comfortable developing multi-year roadmaps as you are diving into implementation details.


• Industry Knowledge: Deep domain knowledge in cybersecurity services, including familiarity with security frameworks (NIST, ISO, MITRE ATT&CK), testing methodologies, and program execution models.


• Security Expertise: Direct experience partnering with SecOps, AppSec, or other security-focused stakeholders—including CISOs, Security Engineers, and Analysts—to align on priorities and drive program success. This experience is strongly preferred.


• Technical Proficiency: Experience working with Salesforce or similar CRM platforms, with the ability to leverage data and analytics to drive customer success strategies.


• Operational Excellence: Strong multi-tasking abilities and the flexibility to adjust to changing priorities in a fast-paced, dynamic environment.


• Communication Skills: Exceptional written and verbal communication skills, with the ability to translate complex technical concepts into business value for executive audiences.


• Enterprise Acclimation: Demonstrated experience working with Enterprise-level clients, understanding the unique dynamics, procurement processes, and relationship requirements of large organizations.


• Analytical Mindset: Prior experience in detail-oriented and analytical environments, with the ability to use data to inform decisions and measure success.


• Executive Presence: Prior experience managing renewals, expansions, and C-level conversations, with the confidence and credibility to engage at the highest levels.


• Proactive Orientation: Naturally proactive with an entrepreneurial spirit—always seeking ways to add value and elevate both the customer and the team.


• Growth Mindset: Eagerness to learn, adapt, and continuously perfect your craft in an evolving industry.


• Customer-Centric Philosophy: A genuine passion for customer success: you believe that when customers win, everyone wins.

Why You Should Join arenaflex

At arenaflex, we invest heavily in our people because we know they're the foundation of our success:

• Industry Leadership: Grow in a passionate, rapidly expanding industry operating at the forefront of the penetration testing and offensive security space. You'll work with cutting-edge technology and be part of shaping the future of cybersecurity.


• Mentorship & Development: Work directly with experienced senior leaders who are committed to your ongoing mentorship and career development. You'll have opportunities to learn from industry veterans who have built successful security programs at scale.


• Competitive Compensation: Earn competitive compensation and participate in an attractive equity plan that rewards your contributions to our shared success.


• Retirement Benefits: Save for the future with our 401(k) program (US) or pension scheme (EU), with company matching to help you build financial security.


• Comprehensive Health Coverage: Benefit from comprehensive medical, dental, vision, and life insurance (US) or statutory healthcare (EU) coverage for you and your family.


• Professional Stipends: Take advantage of generous stipends for:
  
  
  
  • Wellness—invest in your physical and mental health
  
  
  • Work-from-home equipment and wifi—create the ideal workspace
  
  
  • Learning and development—continue growing your skills and expertise
  
  
  
  


• Work-Life Balance: Make the most of our flexible, generous paid time off policy and paid parental leave, supporting you in all areas of life.


• Remote-First Culture: Join a fully remote team that values flexibility, autonomy, and work-life integration. We measure results, not hours.

Compensation & Benefits

arenaflex is committed to fair and equitable compensation practices. The salary range for this role is $104,768 – $130,960 per year, plus equity and comprehensive benefits. A candidate's salary is determined by various factors including relevant work experience, skills, certifications, and qualifications. The salary range may differ based on location and may be impacted by proximity to major metropolitan areas.

Equal Opportunity Employer

arenaflex is an equal opportunity employer, and we want the best available persons for every job. We make employment decisions based solely on merit. Our commitment to diversity and inclusion means we prohibit discrimination in any employment opportunity—including recruitment, employment, promotion, salary increases, benefits, termination, and all other terms and conditions of employment—based on race, color, sex, sexual orientation, gender, gender identity, gender expression, genetic information, pregnancy, religious creed, national origin, ancestry, age, physical or mental disability, medical condition, marital or domestic partner status, military or veteran status, height, weight, or any other characteristic protected by federal, state, or local law.

arenaflex is an E-Verify employer. E-Verify is an internet-based system operated by the Department of Homeland Security (DHS) in partnership with the Social Security Administration (SSA) that allows participating employers to electronically verify the employment eligibility of their newly hired employees in the United States.

Join Our Team

If you're ready to make a meaningful impact in the cybersecurity industry, work with innovative customers, and grow your career with a team that values excellence, inclusion, and innovation, we encourage you to apply. At arenaflex, you'll find more than a job—you'll find a community committed to making the digital world safer for everyone.

Come do the best work of your career at arenaflex. Apply today and be part of something extraordinary.