AI GTM Engineer

Serotonin is the leading go-to-market firm for transformative technologies, specializing in marketing, strategy, recruiting, and legal services for the web3 and AI ecosystem. With a global team of 90 across 15 countries and over 300 clients supported since 2020, Serotonin delivers end-to-end GTM solutions spanning public relations, growth marketing, content, research, social media, and design.

This role sits at the intersection of AI tooling, GTM strategy, and marketing execution. You will identify where AI can compress timelines, improve output quality, and unlock competitive advantage for internal teams and clients — then build those systems. Working directly with marketing leads, account teams, and clients across web3, consumer tech, and AI, you will translate cutting-edge AI capabilities into practical GTM impact.

• Audit existing marketing workflows across content, social, PR, and growth and redesign them with AI tooling to increase speed, quality, and scale.
• Build and maintain AI-powered content and campaign pipelines for internal teams and client accounts.
• Develop and own a firm-wide prompt library, AI SOPs, and workflow playbooks for a 90-person global team.
• Identify, evaluate, and onboard new AI tools for marketing and GTM; maintain and evolve the firm's AI tooling stack.
• Build no-code/low-code automations connecting AI tools into martech stacks (HubSpot, Notion, Slack) using Make, Zapier, or n8n.
• Train and upskill marketing teams on AI tools and workflows, raising baseline AI fluency across the firm.
• Define and track metrics proving AI workflow impact: time saved, output volume, quality scores, and client adoption.

• Expert-level prompt engineering across major LLMs (Claude, ChatGPT, Gemini, Perplexity), including system prompts and multi-turn workflows.
• Hands-on experience with AI creative tools: image generation (Midjourney, Adobe Firefly), video (Runway, Sora, Kling), and audio (ElevenLabs).
• Workflow automation using Make, Zapier, or n8n; comfortable with APIs, webhooks, and JSON.
• Familiarity with AI-native martech: HubSpot AI, Jasper, Copy.ai, Notion AI, and Sprout Social.
• Background in web3 GTM: understanding how protocols, DAOs, and crypto projects build audiences and launch products.
• Analytical skills with GA4, HubSpot analytics, and on-chain data tools (Dune, Nansen, Arkham).

Serotonin is building the AI layer across its marketing operations and is hiring an AI & GTM Engineer. This role sits at the intersection of AI tooling, GTM strategy, and marketing execution — identifying where AI can compress timelines, improve output quality, and unlock competitive advantage for internal teams and clients, then actually building those systems.

What you'll do

What Serotonin is looking for

About Serotonin

Serotonin is the top go-to-market firm for transformative technologies, specializing in marketing, strategy, recruiting, and legal services. With a global team of 90 across 15 countries, Serotonin has supported over 300 clients in consumer tech, web3 infrastructure, digital assets, venture capital, and AI since 2020.