[Hiring] AI & GTM Engineer @Serotonin

Role Description

We’re building the AI layer across Serotonin’s marketing operations. 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 our internal teams and clients - and then actually build those systems.

This isn’t a role for someone who wants to talk about AI. It’s for someone who ships AI-powered workflows regularly and iterates based on the next best thing out there. You’ll work directly with marketing leads, account teams, and clients across web3, consumer tech, and AI - translating cutting-edge AI capabilities into practical GTM impact.

Responsibilities

• Audit existing marketing workflows across content, social, PR, growth, and design, and systematically 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, reducing manual effort without sacrificing brand quality.
• Develop and own a firm-wide prompt library, AI SOPs, and workflow playbooks - the operational backbone that makes AI adoption stick across a 90-person global team.
• Identify, evaluate, and onboard new AI tools relevant to marketing and GTM; maintain and evolve the firm’s AI tooling stack as the landscape shifts.
• Partner with client teams to diagnose GTM bottlenecks and design AI-assisted solutions - from content at scale to campaign automation to research synthesis.
• Build no-code and low-code automations that connect AI tools into existing martech stacks (HubSpot, Notion, Slack, social platforms) using tools like Make, Zapier, or n8n.
• Train and upskill marketing teams across the firm on AI tools and workflows, raising the baseline AI fluency of every team you work with.
• Define and track the metrics that prove AI workflow impact - time saved, output volume, quality scores, and client adoption, and report findings to leadership.

Qualifications

• Expert-level prompt engineering across major LLMs (Claude, ChatGPT, Gemini, Perplexity).
• Hands-on experience with AI creative tools: image generation (Midjourney, Adobe Firefly), video (Runway, Sora, Kling), and audio (ElevenLabs) in a real marketing context.
• Workflow automation using no-code/low-code platforms (Make, Zapier, n8n).
• Comfortable working with APIs, webhooks, and JSON.
• Familiarity with AI-native martech: HubSpot AI, Jasper, Copy.ai, Notion AI, Sprout Social.
• Experience building prompt templates, internal AI playbooks, and training materials that actually get used.

Requirements

• Ability to use AI tools to synthesize research, competitive intelligence, and market data at speed.
• Comfort measuring the performance of AI-assisted campaigns and workflows.
• Ability to translate AI workflow data and campaign performance into clear strategic recommendations for clients and internal stakeholders.
• Familiarity with analytics tools (GA4, HubSpot analytics, basic SQL a plus).
• Strong critical thinking around AI outputs.

Blockchain & Web3 Experience

• Familiarity with the web3 GTM landscape.
• Working knowledge of how AI and blockchain intersect.
• Awareness of on-chain analytics tools (Dune, Nansen, Arkham, Flipside).
• Strong interest in the space; prior experience in crypto or web3 marketing environments is a strong plus.

This position is ideal for someone who…

• Doesn’t care about rigid job titles.
• Loves tinkering and experimenting with new tools.
• Gets energy from hard, ambiguous problems.
• Ships fast and isn’t precious about being wrong on the first try.
• Wants to see their work create real client impact.
• Believes AI is a multiplier, not a shortcut.
• Thrives in a fast-moving, globally distributed team.

Benefits

• Competitive Salary
• Health Insurance (US Only)
• 401(k) (US Only)
• Remote Work Environment
• Maternity/Paternity Leave
• $80,000 - $190,000 a year