Chief Marketing Officer (Web3) - External in City of London

Join to apply for the Chief Marketing Officer (Web3) - External role at Serotonin. We’re enabling global builders, fintechs and integrators to launch and connect programmable “digital dollars” in an interoperable, composable network—providing liquidity, on-chain governance and institutional-grade safeguards for a new era of finance. If you’re driven by redefining money, infrastructure, and scale-driven marketing, this is the opportunity to shape not just a brand, but a foundational movement.

As Chief Marketing Officer, you will be the architect of a global brand narrative that bridges innovation, trust, and impact. You’ll lead a multidisciplinary team to craft and execute data-driven marketing strategies that elevate awareness, drive adoption, and position the organization as the category leader in digital asset infrastructure. This role demands a visionary marketer—someone equally fluent in strategy and storytelling, who can translate complex technology into human-centered messages that resonate across enterprises, developers, regulators, and institutional partners.

Key Responsibilities

• Marketing Strategy & Vision: Develop and execute a comprehensive marketing strategy – spanning community, content, events, and partnerships – to drive network growth and user adoption. Align marketing initiatives with our business objectives and bold vision for decentralization.
• Brand Narrative & Positioning: Craft and champion the brand narrative and positioning, creating a clear, compelling story that resonates with users, partners, and the broader Web3 community. Elevate Serotonin’s identity with a bold voice that stands out in the decentralized tech space.
• Community Building: Lead community growth and engagement across Discord, Twitter (X), Telegram, and other platforms – building a vibrant community from the ground up. Nurture advocates and ambassadors who champion the mission and expand our reach. Foster an environment of trust, engagement, and excitement among early adopters.
• Content & Campaigns: Drive creative marketing campaigns and content initiatives that boost user engagement and retention. Oversee content creation (social media, blogs, videos, etc.) and educational resources to keep our community informed and excited – all while ensuring every message reflects their bold and provocative voice.
• Public Relations & Communications: Manage all PR and communications efforts to position us as a thought leader in Web3. Secure strategic media coverage and speaking opportunities at industry events. Serve as the confident public face of the company at conferences, AMAs, and in the press, articulating our vision for decentralization and DePIN with clarity and conviction.
• Partnerships & Ecosystem Growth: Forge strategic partnerships across the Web3 and DePIN ecosystem to amplify our reach and utility. Work closely with other projects, protocols, and influencers on co-marketing initiatives that drive network effects and grow their user base. Expand our presence by collaborating within the community and industry to catalyze adoption.
• Team Leadership: Build and mentor a high-performing marketing team, fostering a culture of creativity and data-driven experimentation. Inspire and empower team members to execute bold ideas with excellence, and lead by example as a hands‑on marketer and mentor.
• Metrics & Optimization: Establish clear KPIs and success metrics for all marketing efforts, and continuously analyze performance data to inform decisions. Iterate quickly on campaigns based on insights, ensuring our marketing is solution-oriented and delivering tangible growth in users and engagement.

Key Requirements

• Experience: 10+ years of marketing experience with a strong track record in leadership roles, including significant exposure to high-growth tech or Web3 startups. You have scaled marketing organizations and delivered results in fast-paced environments.
• Web3 Launch Expertise: Proven success in launching major blockchain products or networks (including token launches) and growing communities from inception to scale. You’ve taken projects from zero to one – and beyond – and can point to communities or user bases you’ve built from the ground up.
• Blockchain & DePIN Knowledge: Deep expertise in blockchain technology, decentralization principles, and emerging Web3 trends like DePIN (Decentralized Physical Infrastructure Networks). Fluent in crypto culture and communities, you understand what resonates with developers, node operators, degens and enthusiasts alike.
• Strategic & Innovative Mindset: Visionary strategist who can see the big picture but also get hands‑on. You aren’t afraid to challenge conventional marketing tactics – willing to throw out the old playbook and experiment with novel, even provocative, approaches to spark growth.
• Communication & Public Presence: Exceptional communication, storytelling, and writing skills. A bold communicator who can inspire action through clear messaging. Confident public speaker comfortable representing the company on stage, in webinars, and on social channels.
• Leadership & Team Building: Proven ability to lead and inspire teams. You have built and managed high-performing marketing or community teams, and you know how to mentor talent and foster a collaborative, results-driven culture.
• Data-Driven Approach: Metrics-focused mindset with proficiency in analytics tools (e.g. Google Analytics) to measure campaign performance. You make decisions based on data and user insights, and iterate quickly to optimize outcomes.
• Network & Relationships: Extensive network and credibility in the Web3/crypto space, with relationships across media, key opinion leaders (KOLs), and community influencers. Able to leverage your connections to boost visibility and partnership opportunities.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Location: London, England, United Kingdom