Senior Agency Customer Success Manager – Enterprise Digital Advertising & Strategic Partnership Leadership

Join the Future of Digital Advertising Innovation

Are you ready to become a pivotal force in shaping how leading brands and agencies harness the power of social advertising? Do you thrive when you're at the intersection of technology, strategy, and meaningful client relationships? Are you passionate about being the trusted advisor that agencies rely on to unlock their full potential in the rapidly evolving digital marketing landscape?

Welcome to arenaflex — where we're not just building advertising technology; we're reimagining how brands connect with consumers across the world's most influential social platforms. As a Senior Agency Customer Success Manager, you'll step into a dynamic role that combines strategic partnership development, consultative problem-solving, and hands-on leadership. From your very first week, you'll own a portfolio of enterprise-level agency relationships, driving their success while accelerating our own growth trajectory.

The digital advertising industry is experiencing unprecedented transformation. Artificial intelligence, programmatic buying, and cross-platform integration are redefining what's possible for brands seeking to capture consumer attention. At arenaflex, you'll have a front-row seat to this evolution — learning at an accelerated pace, building expertise in cutting-edge advertising technology, and developing the skills to become a true authority in your field. This isn't a passive account management role. You'll be a strategic architect, designing success plans, orchestrating cross-functional collaboration, and serving as the vital bridge between our platform capabilities and our agency partners' ambitious goals.

Your Impact as a Senior Agency Customer Success Manager

In this high-visibility position, you'll serve as the primary relationship owner for a select group of agency activation partners who rely on arenaflex to power their social advertising initiatives. Your mission extends far beyond standard account management — you'll be their strategic confidant, their technical expert, and their advocate within our organization. Every day presents new challenges and opportunities to demonstrate your value.

Here's what success looks like in this role

• Strategic Relationship Leadership: Build and nurture deep, trust-based partnerships with agency leadership and key stakeholders. You'll serve as their go-to advisor for all matters related to social advertising strategy, platform optimization, and performance improvement. Your goal is to become so integral to their success that they view arenaflex as an essential extension of their own team.
• Platform Mastery & Technical Advisory: Develop and maintain expert-level proficiency in the arenaflex advertising platform and the broader digital advertising ecosystem. You'll leverage this knowledge to provide consultative guidance, troubleshoot complex challenges, share industry best practices, and help agencies maximize the ROI of their advertising investments across Meta, Pinterest, Snapchat, TikTok, and other major platforms.
• Growth Acceleration: Collaborate closely with Agency Sales to design and execute comprehensive development strategies that increase platform adoption, drive awareness of new features and capabilities, and identify expansion opportunities within your agency book of business. You'll be instrumental in converting existing relationships into larger revenue streams.
• Cross-Functional Orchestration: Work seamlessly across multiple internal functions — including Agency Sales, Agency Onboarding, Technical Solutions, Product, and Engineering — to ensure cohesive execution of growth initiatives. You'll drive alignment on resource allocation, project timelines, and strategic priorities that benefit both agencies and arenaflex.
• Onboarding Excellence: Partner with our Onboarding teams to refine training procedures, develop comprehensive educational programs, and ensure agency teams are fully equipped to leverage arenaflex's full capabilities. You'll create scalable enablement resources that transform new users into platform power users.
• Educational Program Development: Design and deliver workshops, training sessions, and ongoing educational content that empowers agency teams to achieve mastery of arenaflex solutions. You'll establish yourself as a thought leader whose guidance is eagerly sought by agency partners.
• Platform Partnership Management: Foster strong, mutually beneficial relationships with key platform partners including Meta, Snap, TikTok, Pinterest, and Google. These partnerships are essential to delivering integrated solutions that give our agency clients a competitive edge.
• Voice of the Customer: Serve as the authoritative advocate for agency needs and insights within arenaflex's Product and Engineering teams. Your feedback will directly shape our product roadmap, ensuring we continuously evolve to meet the real-world needs of the agencies we serve.
• Organizational Building: Contribute actively to building a world-class Agency Customer Success organization. This includes developing knowledge libraries, documenting best practices, optimizing existing processes, and championing initiatives that enhance our team's effectiveness and competitive differentiation.

Who We're Looking For

We seek a candidate who brings a unique blend of relationship management prowess, technical acumen, and strategic thinking. The ideal candidate will combine industry expertise with an entrepreneurial mindset and a genuine passion for helping others succeed.

Essential Qualifications

• A minimum of 5+ years of experience in a customer success, account management, or similar customer-facing role within the advertising, marketing technology, or digital media industry
• Advanced knowledge of social advertising platforms and ecosystems, including hands-on experience with Meta (Facebook/Instagram), Pinterest, Snapchat, TikTok, and Google advertising products
• Demonstrated ability to explain complex technical concepts to diverse audiences and translate data insights into actionable recommendations
• A track record of owning and growing a book of business, with evidence of achieving retention and expansion targets
• Exceptional written and verbal communication skills, with the ability to influence stakeholders at all organizational levels
• Strong analytical capabilities and comfort working with performance metrics, dashboards, and data-driven decision-making

Professional Attributes That Set You Apart

• Highly empathetic nature with a positive, solutions-oriented attitude that creates trust and psychological safety in client relationships
• Results-driven mentality with a bias for action — you don't wait for permission or perfect conditions to make progress
• Natural collaboration skills that enable you to work effectively across functional boundaries and build consensus among diverse stakeholders
• Self-driven, entrepreneurial spirit that thrives in ambiguity and takes ownership of challenges without requiring constant direction
• Intellectual curiosity and commitment to continuous learning in a fast-moving industry
• Comfort with hybrid work models — this role requires presence in our London office approximately 3 days per week for collaboration and relationship building
• Willingness to travel periodically for quarterly business reviews, industry conferences, and partner events

Your Growth Trajectory at arenaflex

We designed this role as a launchpad for exceptional talent. As a Senior Agency Customer Success Manager at arenaflex, you'll develop a rare combination of skills that prepare you for long-term career success — whether your path leads to expanded leadership within Customer Success, a move into Sales leadership, or even general management opportunities.

You'll receive structured mentorship from senior leaders, gain exposure to executive-level conversations, and have opportunities to lead high-impact projects that shape our organization's future. The digital advertising industry offers virtually unlimited growth potential, and arenaflex is committed to investing in your development every step of the way. Many of our most successful leaders began in customer-facing roles exactly like this one, building the relationships, expertise, and strategic thinking that now define their careers.

The arenaflex Culture & Environment

arenaflex is more than a workplace — it's a global community of builders, innovators, and problem-solvers united by a shared mission to transform digital advertising for the better. We're proud to be a multinational, diverse team of over 750 professionals representing more than 60 nationalities across 24 locations in 13 countries. This diversity isn't just a point of pride; it's a strategic advantage that fuels innovation and helps us understand and serve a global client base.

Our culture is built on trust, transparency, and open feedback. We believe the best ideas can come from anywhere, and we ensure every team member has a voice that matters. We foster an inclusive environment where diverse perspectives are not only welcomed but actively sought out. Our commitment to Diversity, Equity & Inclusion isn't performative — it's embedded in how we hire, how we develop talent, and how we make decisions.

When you join arenaflex, you're joining a company that measures success by the impact we create for our customers. You'll see your work directly influencing our customers' business growth and contributing to a company making a meaningful global impact. The advertising technology industry is fast-paced and ever-changing, which means every day brings fresh challenges and learning opportunities. If you thrive in dynamic environments and enjoy continuous growth, you'll find your sweet spot here.

Compensation & Benefits That Reflect Your Value

arenaflex is committed to attracting and retaining exceptional talent, which is why we offer a comprehensive rewards package designed to support your professional success and personal wellbeing.

• Competitive Compensation: A base salary that reflects your experience and expertise, paired with performance-based incentives that reward your contributions to our shared success.
• Equity Participation: Stock options that give you a real stake in arenaflex's growth and long-term success.
• Comprehensive Healthcare: Healthcare packages that cover you and your dependents, including access to mental health services and wellness support.
• Work-Life Balance: Generous paid time off, parental leave policies, and flexibility to help you maintain balance between your professional ambitions and personal life.
• Flexible Hybrid Model: Experience the best of both worlds — collaborative office environments for relationship building and creative problem-solving, combined with remote work flexibility. You also have the option to work abroad for up to 30 days annually.
• Career Development: Structured growth opportunities, mentorship programs, and resources to help you continuously expand your skills and advance your career.
• Industry Exposure: Regular attendance at conferences, industry events, and platform partner gatherings that expand your network and keep you at the cutting edge of advertising technology.

Ready to Build Your Future with arenaflex?

If you're driven by the opportunity to shape how agencies succeed in the digital advertising revolution, we want to hear from you. This is your invitation to join a team where your expertise will be valued, your voice will be heard, and your contributions will directly impact the success of global brands and the agencies that serve them.

At arenaflex, we're committed to being a great place for growth-minded individuals to thrive. We offer more than a job — we offer a career trajectory, a learning environment, and the chance to work alongside brilliant colleagues who share your passion for excellence.

Apply now and take the first step toward building your future with arenaflex.

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