AI Engineer (Remote)

Founding AI Engineer Full-time | New York | In person River builds AI voice agents for B2B SaaS sales teams. River is an early-stage company with paying customers and is building its engineering team in New York. As a Founding AI Engineer, you’ll build the agent at the center of River’s product: how it listens, reasons through a conversation, uses tools, navigates a browser, and responds when a buyer interrupts, changes direction, or asks an unexpected question. You’ll work directly with the founders and have significant ownership over systems that run live in front of real buyers. The role combines AI engineering with product and customer problems. You should be comfortable understanding the broader architecture, building AI workflows, and developing custom solutions for customers when the product needs to adapt to a particular use case. River cares more about evidence that you can build and ship strong AI products than a specific technology stack, degree, or number of years in the industry. Build and improve the AI agent that powers River’s live sales conversations. Build AI workflows that turn product and customer requirements into working systems. Work on the browser-driven portion of the product, where the agent navigates software while interacting with a buyer. Work directly with customers when a use case requires a custom solution, then apply what you learn to improve the product. Ship production systems, observe how they perform in real customer interactions, and iterate based on what you learn. Experience building and shipping AI agents or AI-powered products into production. Hands-on experience building AI workflows rather than only experimenting with AI tools. Strong software engineering fundamentals and the ability to understand and work across a product’s architecture. Ability to build for real customer needs and make practical tradeoffs between product experience and technical implementation. Voice AI or other real-time systems. WebRTC, streaming, or low-latency applications. Browser or computer automation. Customer-facing or forward-deployed engineering. Building or working at an early-stage startup. Meaningful Equity Health Insurance River expects approximately four days per week in the office. Additional Job Application Terms This job is part of LinkedIn’s Full-Service Hiring beta program.