Senior GTM Growth Marketer

About Pantheon Pantheon WebOps Platform powers the open web, running more than 300,000 sites in the cloud for customers including Google, Princeton, Salesloft, and Doctors Without Borders. Every day, thousands of developers and marketers create, iterate, and scale WordPress and Drupal sites to reach billions of people globally. Pantheon’s multitenant, container-based platform enables organizations to manage all of their websites from a single dashboard. Organizations, including Clorox and the United Nations, drive results through accelerated development and real-time publishing using Pantheon’s collaborative workflows. The Role We're looking for a Senior GTM Growth Marketer to join a team that operates with the pace and mindset of a startup within Pantheon. You'll help identify, develop, and scale growth opportunities while bringing innovative, differentiated solutions to market. This role is ideal for someone who thrives in ambiguity, thinks in hypotheses, and enjoys turning market signals into actionable GTM strategies. As a member of this small, startup-style growth team, you'll partner closely with Product Marketing, Sales, and Product to better understand customers, test new approaches, and build repeatable GTM strategies that accelerate growth. This is not a traditional demand generation role. We're looking for a builder who can combine strategic thinking with hands-on execution. Someone who can analyze customer feedback, sales conversations, and market signals to continuously improve our GTM approach. What You Need to Succeed GTM Strategy & Experimentation Develop and execute experiments to identify ideal customer profiles, target segments, messaging, and growth opportunities Define experiment goals, success metrics, and learning frameworks to understand what is working and why Build an evolving understanding of target customers, market segments, objections, and buying signals Translate insights into actionable recommendations for Sales, Product Marketing, and Product teams Growth Programs & Market Development Build and iterate growth programs across channels including outbound, digital campaigns, LinkedIn, account-based approaches, and other emerging tactics Identify opportunities to increase awareness and engagement within target markets Create repeatable processes for testing, learning, and scaling GTM motions Own measurement frameworks that surface insights and business impact, not just activity metrics Customer & Sales Insights Partner closely with Sales teams to understand customer conversations, objections, buying patterns, and market feedback Analyze customer and sales insights to identify trends, opportunities, and areas for improvement Translate field insights into messaging improvements, campaign strategies, and GTM recommendations Serve as the connection point between what the market is saying and how we position our solutions Sales & Marketing Enablement Develop and refine messaging, outreach approaches, talk tracks, and supporting materials based on market learnings Partner with Product Marketing to improve positioning and communicate value effectively Work closely with Sales partners to understand what resonates and continuously improve our approach GTM Operations & Analytics Own the tools and processes required to measure GTM experiments and growth initiatives Maintain CRM hygiene, reporting, and dashboards that help the team understand performance and opportunities Create visibility into experiment results, customer insights, and GTM learnings What You Bring to the Table 7–10+ years of growth marketing, GTM, product marketing, demand generation, or related experience within B2B SaaS or technology companies Experience building GTM programs, growth motions, or new market initiatives from the ground up Ability to operate effectively in ambiguous environments and create structure where processes do not yet exist Strong experimentation mindset — comfortable developing hypotheses, testing assumptions, and ma…