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About the Role
This is a founding engineering role at a fast-growing AI startup building multimodal sales and lifecycle agents. You will own a core product domain end-to-end, make product decisions directly with founders and customers, and ship production features without a separate PM layer.
Responsibilities
- Own the B2B operating system, multimodal agent layer, family graph and memory system, or a new consumer product.
- Join customer calls, synthesize feedback, make roadmap tradeoffs, and ship without waiting for a PM.
- Build reliable voice, SMS, and email agents with low latency, strong response quality, and long-running state across channels.
- Establish evaluation, prompt-versioning, guardrail, and drift-detection systems for nondeterministic AI behavior.
- Work full stack across React and Next.js frontends, Node.js services, and Python voice pipelines.
- Ship production improvements daily while raising the bar for architecture, product quality, and engineering velocity.
Requirements
- 3 to 8 years of full-stack product engineering experience.
- Strong production experience with TypeScript, Node.js, React, and Next.js.
- Evidence of shipping a zero-to-one product at a high-growth startup, as a founder, or on a new-product team inside a larger technology company.
- Depth in production voice or messaging agents, long-running agent state and memory, B2B2C or marketplace products, or agent evaluations and guardrails.
- Direct experience building products with LLM APIs or agent SDKs such as Anthropic, OpenAI, Vercel AI SDK, or Mastra.
- Strong product judgment, high agency, comfort talking with customers, and the ability to make good decisions without extensive structure.
- Willingness to work five days per week from the Chelsea, New York City office.
- Candidates outside New York must be willing to relocate.
- Existing OPT or H-1B transfers may be considered.
Skills
- TypeScript
- Node.js
- React
- Next.js
- LLM APIs
- Agent SDKs
- Anthropic
- OpenAI
- Vercel AI SDK
- Mastra
Location
- Chelsea, New York City
Work Type
- Full-time
- In-person
Experience Level
- 3 to 8 years of full-stack product engineering experience
Salary/Compensations
- $180,000 to $250,000 base salary
Benefits
- Competitive founding-stage equity.
- Direct product ownership and daily access to the founders and customers.
- Career flexibility to grow into leadership or remain on a senior individual-contributor track.
About the Company
- Fast-growing AI startup building multimodal sales and lifecycle agents for youth enrichment businesses and families.
- Voice, SMS, and email agents help sports programs, academic centers, camps, and other providers answer families instantly, drive enrollment, and grow long-term relationships.
- Seven-person company founded by former Uber and DoorDash engineering leaders.
- Raised $3M and reached seven figures of ARR in its first 4.5 months.