Jack finds you roles at companies like River

Founding Engineer, Full Stack at River in New York. River is building AI-native voice agents that close deals and control demos, and you’ll own the core real-time infrastructure as the first engineering hire. This is an opportunity to shape the product from the ground up with founders backed by Ramp and Kalshi.

Join River as a Founding Backend Engineer in New York to help build the world’s first autonomous AI Account Executive. Backed by the founders of Ramp, Kalshi, and JumpCloud, you’ll own the live-call pipeline and infrastructure. This early role offers equity and the chance to tackle sub-second latency at the intersection of WebRTC and LLMs in NYC.

Join River as a Founding Product Engineer in New York. Work on the buyer-facing experience from live WebRTC calls to browser-automated demos at an early-stage NYC startup backed by the founders of Ramp, Kalshi, and JumpCloud. You'll have the opportunity to ship code that directly impacts real customer calls as River grows.

Founding Product Engineer at River in New York, you’ll work directly with the founders to build a production-grade AI platform powered by LLMs. River is a NYC-based startup redefining B2B sales with AI voice agents and live demos, seeking its first engineering hire. This early role lets you shape the product and its direction at a pre-seed company, with equity and real customer impact.

Product Engineer (Full-Stack) at River in New York who will build AI voice agents that demo software and close deals autonomously. River is backed by the founders of Ramp and Kalshi and operates as a high-growth startup. The role seeks 2.5–5 years of elite experience and offers the chance to ship LLM-powered workflows and browser automation in real sales calls.

River seeks a Founding Engineer in New York to own the live-call pipeline and infrastructure for its AI-enabled B2B demos. Backed by the founders of Ramp and Kalshi, you’ll join a founder-led team with equity up to 2.5%. This role offers the opportunity to shape River's technical direction in NYC and contribute to a revenue-generating product.

As a backend-leaning Full-Stack Product Engineer at River, you’ll own critical conversation logic and real-time voice infrastructure. River is building an AI account executive that joins live calls to demo, handle objections, and close deals for B2B companies in New York. The role offers $150k-$190k plus equity and the chance to ship real software within a lean NYC team.

Founding Engineer in New York at River will own the low-latency backend and WebRTC pipelines powering Liv. River is building the world’s first AI sales agents that join live video calls and close deals in real time. Backed by a $2M pre-seed from Ramp and Kalshi, this ground-floor opportunity lets you apply 5+ years of production backend and real-time systems experience to reduce inbound sales.