Founding Marketer

About TypeSafe

We’re building prod, not god. TypeSafe is an AI lab pushing frontier model intelligence in a new direction, starting with System One Models. We combine the reasoning of LLMs with the reliability of code, for truly trustworthy AI. Our first model, Jev, launched in September 2026.

While others chase leaderboards, we’re rebuilding the LLM stack from first principles to make models smarter and also dependable enough to run in production. We’re a small, fast team backed by an $870M Series A led by a16z. Made in SF, with love. Come join the frontier.

About the role

You'll own how TypeSafe shows up in the world, from the story we tell to how developers and enterprises discover, adopt, and champion what we build. There's no team to inherit and no playbook to run. You'll work at all altitudes — setting the high-level strategy and then doing the tactical work yourself, from positioning down to the copy.

What you'll own

• Narrative and content: shape the company blog, thought pieces, and our unique perspective on AI, and position our founders and researchers as leading voices
• Product marketing: define our category and translate deeply technical capabilities into messaging that developers resonate with
• Brand and channels: own our company brand, website, and social cadence across X and LinkedIn
• Launches and announcements: coordinate product releases and announcements from press to podcasts to events
• Demand generation: build developer and enterprise interest to build our pipeline

We are looking for people who

Have built a marketing function from zero at a start-up and can both set strategy and execute it

Are tactically broad — can own narrative, launches, demand, and growth experiments across channels from social to SEO to email

Have 5+ years of professional expertise in high-performing teams, including under shifting and ambiguous environments

Write exceptionally well — clear, technical, and fast

Have taste: know what's credible, what's hype, and what's premature

Are fluent in the AI industry, leverage tools yourself, and can credibly talk models and APIs with our engineers and researchers

Show complete ownership — think at the level of goals, not tasks or tickets

Solve problems from both first-principles reasoning and a reservoir of lived experience

Care deeply about our mission and are driven to translate it into real-world impact

Life at TypeSafe

We’re a small, flat, close-knit team working to make intelligence dependable enough to become part of everyday software. We work fully in person from our San Francisco office near Embarcadero station. We love what we do and care deeply about the work.

We strive for excellence and craftsmanship and won’t stop until we get there. When the team wins, we all win, and we enjoy collaborating and inspiring each other to grow—as a team and as individuals.

We value emotional honesty, kindness, and bringing your whole self to work. We build machines; we don’t try to be machines.

We want TypeSafe to be the place where you do the most impactful work of your career and help define our future as a company.

We provide

100% covered health insurance

Daily lunch and dinner

Visa sponsorships

401K plans