AI Marketing Intern
About Spearbit & Cantina:
Founded in 2021 by former Ethereum Foundation Solidity engineers, Spearbit tackles Web3 security challenges. Our founding team built the leading blockchain language and secured the largest smart contract, protecting over $160B in value.
We're building Cantina —the "GitHub for Security"—connecting security researchers with projects needing expertise. Our Cantina security platform has powered major competitions and serves the leading projects in Web 3. It currently supports collaborative security reviews, public and private security competitions, bug bounty programs, incident response, and AI code analyzer.
Similar to how cloud-security startups emerged previously, Cantina aims to be the definitive code-security platform for the future.
The Opportunity:
We’re looking for an AI-native Marketing Intern who thinks in systems, experiments constantly, and wants to help build the next generation of marketing automation.
This is not a traditional marketing internship.
You won’t be scheduling social posts or writing blog drafts all day.
You’ll work directly with the Head of Growth to help design and experiment with AI-powered workflows that:
Identify high-intent prospects
Automate research and enrichment
Improve outbound systems
Build smarter marketing automations
Test AI-driven acquisition ideas
You’ll discover how a modern, AI-native GTM engine is built from scratch.
If you’re obsessed with AI tools, constantly experimenting, and want real ownership, this role is for you.
Responsibilities:
Experiment with AI tools (LLMs, agents, automation platforms) to improve marketing workflows
Help build lead-generation and enrichment systems
Prototype AI-driven outbound or research workflows
Assist in creating marketing automation experiments
Analyze campaign performance and suggest optimizations
Research emerging AI tools and implement them
You will ship real systems, not just observe.
Requirements:
Deep curiosity and previous experience with AI and automation systems
Strong written communication skills
Structured thinking and problem-solving ability
Ability to work independently and move quickly
Nice to Have
Basic experience with Python, JavaScript, or SQL
Familiarity with automation tools (Zapier, Make, n8n, etc.)
Experience building AI workflows or side projects
Interest in security infrastructure
You'll Thrive If:
Hands-on experience building an AI-native marketing engine
Exposure to startup strategy and decision-making
Mentorship from leadership
A portfolio of real automation systems you helped build
Potential path to full-time role
If you want to learn how modern AI-driven marketing systems are actually built, not just read about them, we’d love to hear from you.