AI sales agents that demo products and close SMB deals

Founding AI Engineer

River builds AI voice agents for B2B SaaS sales teams. The Founding AI Engineer will build and improve River’s production AI agent, including its reasoning, tool use, memory, browser interaction, and conversational capabilities, while shipping across the TypeScript, Node, and Next.js stack.

Product Engineer

River builds AI voice agents for B2B SaaS sales teams, enabling real-time prospect qualification, product demonstrations, and follow-up. The Product Engineer will build backend services, APIs, LLM-powered workflows, browser-use agents, enrichment pipelines, and supporting UI while collaborating directly with founders and design partners.

Founding Engineer

River builds AI voice agents for B2B SaaS sales teams, combining real-time voice, avatars, browser control, and LLMs. The Founding Engineer will make the live-call pipeline fast and reliable, own backend infrastructure, advance browser-use agents, establish engineering foundations, ship product features across the stack, and engage with customers.