Full Stack Software Engineer (AI Agents / Product / Founding / Mid-Sr)

PetsApp; San Francisco (CA); On-site; USD 180,000 - 220,000; Full time

Benefits offered by this job

1-3% equity

Startup environment

Innovative tech

Job summary

PetsApp is looking for a Full Stack Engineer in San Francisco to handle SaaS integration, user requests, and AI agent infrastructure. This opportunity includes a significant equity grant and a competitive base salary.

The ideal candidate should have 2-5 years of experience in startups and be familiar with a tech stack that includes React, Python, and SQL. Join PetsApp to work on innovative solutions for non-technical users.

Qualifications

• 2-5 years work experience at previous startups.
• Production experience in our tech stack.
• Interest to join as a founding engineer.

Responsibilities

• Work on classic SaaS integration problems.
• Handle user-facing requests.
• Develop AI agent infrastructure.

Skills

Production experience in React/typescript

Production experience in Python

Production experience in SQL

Startup experience

Scalable infrastructure experience

Job description

Role

Most agents today are for coding, but 99% of the world aren’t engineers. At SellScale, we’re building AI Agents for non-technical people, starting with the sales org.

As we grow, we’re looking for a Full Stack Engineer. You’ll be hopping between classic SaaS integration problems, user-facing requests, and AI agent infrastructure.

This position is targeting a minimum 1% equity grant minimum and a $200k base salary minimum.

Requirements

1. 2-5 years work experience at previous startups: you’re familiar in a production capacity and have worked on infrastructure ready to scale.
2. Production experience in our tech stack: able to ship across the stack: React/typescript (frontend), Python (backend), SQL (database).
3. Early stage ready: interest to join a startup as one of the first N employees as a founding engineer.

Benefits

1-3% equity: there are few other jobs giving this much equity for this tenure/position.

Agentic foundation: we’re a team that’s been working on agents since 2024 and ready to scale.

Market: Building a product for the 99% of users who don’t code.