First Product Engineer - 0→1 AI Agent Platform (SF)

Fuku; San Francisco (CA); On-site; USD 150,000 - 400,000; Full time

Job summary

Fuku in San Francisco is seeking its first Product Engineer for a new product line that combines data APIs with a user-friendly, self-serve UX. This high-autonomy role is built for a builder who wants to ship 0→1.

You will own end-to-end development from discovery to shipping, work closely with Sales and Customer Success, and prototype quickly while aligning with data and privacy guardrails. Visa sponsorship available; startup experience valued.

Qualifications

• 5+ years shipping production-grade software.
• Strong full-stack engineering fundamentals.
• Proven 0→1 product experience.
• Experience working with sales/GTM teams.
• Ability to design and implement core algorithms, AI agent workflows, and natural language interfaces.
• Willingness/eligibility to work in-person in San Francisco for prototyping days (visa sponsorship available).
• Prior startup experience (Series A/B+ preferred).

Responsibilities

• Lead the 0→1 build of a new product on top of Client's APIs.
• Build core algorithms for deterministic AI agents created from natural language.
• Own product strategy and execution: user discovery, scoping, rapid prototyping, shipping, iteration, and metrics.
• Collaborate closely with Sales and Customer Success to identify high-leverage workflows.
• Build production-quality UX (fast, simple, correct).
• Work with the Head of Engineering on architecture, reliability, and data/privacy guardrails.

Skills

Full-stack engineering

0→1 product experience

Sales/GTM collaboration

AI/agent workflows

Natural language interfaces

Tools

APIs

Job description

Fuku in San Francisco is seeking its first Product Engineer for a new product line that combines data APIs with a user-friendly, self-serve UX. This high-autonomy role is built for a builder who wants to ship 0→1.

You will own end-to-end development from discovery to shipping, work closely with Sales and Customer Success, and prototype quickly while aligning with data and privacy guardrails. Visa sponsorship available; startup experience valued.