Principal Full-Stack Engineer

Quick Facts

• Role: Principal Full-Stack Engineer

• Focus: End-to-end feature delivery, engineering standards, and LLM/agent integration

Description

Build and deploy end-to-end full-stack features, from customer-facing interfaces to backend microservices and database schemas, while collaborating in tight feedback loops. You’ll help customers get value from the product, gather direct feedback, and use insights to drive improvements. As a core capability, you’ll treat LLMs as part of how you build—design prompts and evals and continuously push agentic workflows forward.

Responsibilities

• Collaboratively design, build, and deploy full-stack features

• Work with the team through daily standups, whiteboard sessions, and quick syncs

• Gather customer feedback and translate it into product improvements

• Set and support engineering standards (codebase, test suites, deployment pipelines, developer tooling)

• Balance delivery speed with technical debt management

• Document technical decisions and communicate tradeoffs clearly

Requirements

• Experience building and supporting modern web applications in production environments

• Strong command of full-stack web architecture, including React/Next.js, FastAPI, and PostgreSQL

• Proven ability to ship rapidly in early-stage or fast-paced product environments

• Exceptional communication skills and ability to translate technical ideas into working software

• Fluency with LLMs as a core part of development: coding agents, prompt design, and evals

Benefits

• Ownership and impact: Shape core architecture as one of the earliest engineers

• Zero bureaucracy: Autonomy and trust-based collaboration

• World-class teammates: Work with repeat startup entrepreneurs