Technical Cofounder

Sandfox is building an adaptive buyer-led discovery platform for enterprise B2B. As the first engineering hire, you will shape both the product and the technical foundation, working alongside the founder to establish engineering standards and create intuitive buyer experiences.

Responsibilities:

• You'll own the technical foundation of Sandfox, including:
• AI-powered workflows and user experiences that transform buyer context into adaptive discovery journeys and seller intelligence
• Product quality and design craftsmanship across the customer experience, from first interaction through ongoing usage
• Production systems that combine retrieval, reasoning, evaluation, and user feedback
• Scalable backend services and data pipelines
• Customer-facing applications used by enterprise teams
• Internal tooling, infrastructure, and deployment systems that support rapid iteration
• This role spans the entire stack. One week you may be designing adaptive buyer experiences and customer-facing workflows; the next, building AI systems, evaluation frameworks, or infrastructure that powers them at scale
• In the first 6–9 months:
• Ship experiences customers describe as intuitive, elegant, and genuinely helpful
• Establish the technical architecture and engineering standards of the company
• Build systems that support rapid product iteration without sacrificing reliability
• Partner closely with the founder on roadmap, architecture, and technical decision-making
• Help establish a product culture where design quality, usability, and customer experience are considered as important as technical execution