Join a small, fast-moving team building multimodal AI agents across voice, SMS, and email. As a founding engineer, you will own a core product or engineering domain end to end, shape product decisions with customers, and help establish the quality and architecture of production AI systems.
Own a domain from architecture through implementation, shipping and improving production features.
Speak with customers, synthesize feedback, and make product decisions independently.
Build and optimize multimodal agents, including low-latency voice experiences, messaging workflows, and conversation state across channels.
Set quality practices for non-deterministic systems, including evaluations, prompt versioning, guardrails, and drift detection.
Work across React and Next.js frontends, Node.js backends, and Python services.
Typically 3 to 8 years of full-stack engineering experience, with a record of building and scaling products from 0 to 1 in a startup, founder, or new-product environment.
Production proficiency in TypeScript, Node.js, React, and Next.js, plus experience building with LLM APIs or agent SDKs.
Strong depth in at least one area: agent state and memory, AI evaluations and guardrails, B2B2C or marketplace architecture, or production voice and messaging agents.
Experience making product decisions, conducting customer discovery, and delivering without a dedicated product manager.
Ability to work across application and backend systems, with Python experience in real-time voice pipelines or evaluation tooling beneficial.
Strong AI or agent systems experience, including attention to low latency, reliability, and non-deterministic behavior. Strong CS fundamentals or founder experience with demonstrable product traction are valued.
Base salary is $180,000 to $250,000 USD annually. Visa sponsorship is not available.
On-site, five days per week in New York, New York.
Own product features end to end, from customer discovery and rapid prototyping through production release and iteration, building AI-powered communications tools with a focus on measurable customer needs.
Build and operate full-stack systems, data pipelines, and AI-powered research tools that transform diverse data sources into reliable, continuously updated industry models for professional investors.
As a Full Stack Software Engineer, you will design, build, and maintain features for public agencies, ensuring transparency and effective execution of their strategic plans.
Concevez et améliorez des composants de compilation et de livraison, des pipelines CI/CD et des outils d’automatisation, tout en aidant les équipes de développement à livrer des logiciels fiables et conformes.
Designs and improves build and delivery platform components, CI/CD pipelines, automation, and tooling, while enabling R&D teams to ship reliable software and contributing to architectural direction.
