Senior Full Stack AI Engineer

Join a small, fast-moving team at an early-stage B2B marketing AI startup based in SoHo, NYC. You'll design, build, and ship full-stack products powered by LLMs and autonomous agents - owning outcomes end-to-end, working directly with customers, and driving systems that generate real commercial value. This is a hands-on, high-ownership role for someone who thrives in a fast-paced startup environment and wants to make a direct impact on product and revenue., * Build and ship autonomous agents that automate marketing workflows, with end-to-end ownership from architecture to production.

• Own core product surfaces - talk to customers, define solutions, and ship features rather than just implementing specs.
• Push the boundaries of LLMs in production through prompt engineering, tool integration, multi-step planning, and evaluation.
• Work across the full stack using Hono, TypeScript, Svelte, and Postgres.
• Identify and fill gaps, unblock problems, and ensure nothing falls through the cracks as the product and team scale.
• Drive high-impact work that directly contributes to revenue and product traction.

Do you have experience in TypeScript?, + Eligible to work in the US (US citizen or valid visa) - visa sponsorship is not available.

• Proven experience building autonomous agents or complex LLM-powered systems in production that run end-to-end and handle real-world edge cases.
• Full-stack development experience with TypeScript and Postgres, including frontend (Svelte or similar) and backend in production environments.
• Track record of delivering production-grade features in a high-growth startup environment.
• Experience with AI-assisted development: prompt engineering, tool use, multi-step planning, and LLM evaluation.
• Ownership mindset - comfortable taking a feature from customer research all the way to shipped product.

• Nice-to-haves:

• Hands-on experience with Hono and/or Svelte in production.
• Experience with data-source integrations relevant to marketing or SEO tooling.
• Familiarity with cross-functional, end-to-end technical ownership for AI-driven products.

• Mindset: Product-oriented, comfortable with ambiguity, rapid change, and a fast-moving team. New grads with strong demonstrated ability are welcome to apply., On-site in New York, NY (SoHo). Candidates must be able to work in-person full-time. Start date is as soon as possible. No visa sponsorship available.

• Salary: $140,000 - $205,000 USD annually, depending on experience.
• Early-stage startup equity opportunity.
• Direct impact on product direction and company growth.