Founding FullStack Engineer (NYC)

Who we're looking for...

Role : Founding Full Stack Engineer

Team : Engineering

Reports To : Head of Engineering

Location : Knit's NYC office (Hybrid)

Operating hours : Monday - Friday 9am - 5pm EST.

Travel : This role will occasionally be expected to travel for ad hoc in-person customer requests, in-person internal working sessions, and our once per year US All Team Summit. [To be less than 15%]

A little about us...

Knit is building the agentic AI platform that helps enterprise brands run end-to-end consumer research. We orchestrate specialized AI agents for surveys, data collection, analysis, and reporting, delivering decision-grade insights to Fortune 1000 brands in hours, not weeks.

In under two years, we've partnered with 50+ leading enterprise brands, including Amazon, Mars, NASCAR, JBL, ESPN, and Paramount. Knit has grown 500% in the last 12 months and raised $30.6M to date, including a $16.1M Series A in July 2025. Here are example case studies that demonstrate the value of our platform. A product demo can be found here.

Overview

We're building our foundational NYC engineering team from scratch and looking for exceptional builders who are resourceful, deeply technical, and thrive in high-ownership environments.

As one of the first in-house engineers, you'll shape the core of our platform and the culture of a team that will scale to 20+ over the next 18 months. You'll build and orchestrate AI agents, pioneer new UX paradigms, and tackle some of the hardest problems in applied AI with autonomy and end-to-end ownership.

Business Impact | What you will own...

• Own 0→1 and 1→N features across the stack, from design docs to building high-throughput data pipelines and scalable FastAPI services.
• Architect and own the core agent orchestration engine, designing complex, multi-agent LLM workflows (routing, tool-use, memory, evaluation) with deterministic fallbacks, guardrails, and auditable actions required by enterprise users.
• Build AI-native, human-in-the-loop UIs. Craft React / Next.js interfaces that let users collaborate safely with agents, with transparency and explainability by design.
• Develop the "factory for the factory". Build our experimentation platform : CI / CD for prompts and agents, offline / online evals, drift detection, safety layers, and rollout controls.
• Ship fast, safely. You'll instrument everything for reliability, write concise design docs, add robust tests, and build dashboards and alerts for features you launch.
• Partner cross-functionally with Product, AI, Design, CS; talk to customers and SMEs, and turn ambiguous problems into shipped product.
• Obsess over performance, optimizing for latency across the system : caching, model selection, distillation, batching, vector search, and infrastructure efficiency (GPU / CPU).
• Operate what you build. This includes on-call ownership, leading incident response, and driving learning through blameless postmortems.

Our Stack

This role is for you if...

This role is NOT for you if...

Required Skills & Experiences

long threads.

Benefits

Upon joining the Knit team in this foundational role, you will receive a competitive salary, Equity Options, Healthcare (medical, dental, and vision), and Additional Coverage, a company laptop and one-time, onboarding Technology Stipend, a 401(k) with company match, flexible time-off, hybrid working, and more!