San Francisco
3 months ago

Job Overview

Job Type
FullTime
Pay
Not disclosed

Job description

Location:
San Francisco, United States
Work arrangement:
On-site

Role Summary

As a Founding Engineer, you’ll work across the stack to build core product experiences and the systems behind them. You’ll partner closely with product and design, own projects from idea → shipped → scaled, and help shape the engineering culture and technical direction as we grow.

Responsibilities

  • Build 0→1 product features end-to-end: discovery, technical design, implementation, launch, and iteration.
  • Use the latest AI tools every day — build with them, push their limits, and learn alongside teammates doing the same.
  • Ship across the stack (web app, backend services, data, infrastructure) with a bias toward simple, durable systems.
  • Build product experiences with strong UX quality: interaction design, performance, and polish.
  • Design and operate systems that scale: reliability, observability, capacity planning, cost/performance trade-offs.
  • Improve our engineering foundations: architecture, tooling, CI, testing, release processes, and on-call hygiene.
  • Collaborate tightly with founders and teammates, turning ambiguous problems into crisp execution.

Requirements

  • Strong track record building and shipping 0→1 products (startup, new product line, or major greenfield initiative).
  • Comfortable as a true full-stack engineer (front-end + backend), and willing to go wherever the work is.
  • Strong product sense: you can reason about user workflows, trade-offs, and “what matters” without needing perfect specs.
  • Design intuition: you care about craft, and you can implement clean UI with attention to detail.
  • Systems mindset: you enjoy making software fast, reliable, and maintainable as usage grows.

NICE-TO-HAVES

  • Experience scaling products and systems through inflection points (10× traffic, new customer segments, new pricing/billing complexity).
  • Experience with AI-powered products (LLMs, agentic systems, evaluation/observability, prompt/tooling pipelines).
  • Prior experience as an early engineer or founder in a high-ownership environment.
  • Experience in the web and marketing space

About the Company

ABOUT PLOY

Ploy is building an AI-native growth engine for modern marketing teams — combining high-leverage product experiences with reliable, scalable systems.

We’re a small, fast-moving team shipping new product surfaces weekly and hardening them for real production traffic. If you enjoy building end-to-end products, sweating details, and scaling what you ship, you’ll fit in well.

HOW WE WORK

  • Small teams, high ownership, fast iteration.
  • Engineers own product: you’ll partner directly with design and founders, and have real agency over what we build and why.
  • Pragmatic engineering: ship quickly, then harden with the right abstractions.
  • We value clear thinking, taste, and accountability over ceremony.
Role:
Software Engineer
Job Type:
FullTime

Company profile

Ploy is an AI marketing platform for website growth, operated by Ploy AI, Inc. It builds on-brand pages, identifies visitors, automates SEO and outreach, runs experiments and improves conversion for growth teams. Its agents research the business context, find strategies for account based personalization, SEO/AEO and conversion rate optimization, and ship web pages for growth and marketing agencies, tech start-ups and some traditional industries. Ploy has raised a $27M seed round.

Funding Stage
Seed

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