Full Stack Software Engineer

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

Benefits offered by this job

1-3% equity

Agentic foundation

Innovative market focus

Job summary

A pioneering AI startup is seeking a Full Stack Engineer to join their innovative team in San Francisco. The role involves tackling SaaS integration challenges, handling user-facing requests, and contributing to AI agent infrastructure. Ideal candidates should have 2-5 years of startup experience, along with production skills in React/typescript, Python, and SQL. Notably, there’s a minimum equity grant of 1-3% along with a base salary starting at $200k. Embrace the opportunity to be part of a foundational role with significant equity potential.

Qualifications

• 2-5 years work experience at previous startups.
• Experience shipping across tech stack including frontend, backend, and database.
• Interest in joining a startup as one of the founding engineers.

Responsibilities

• Hopping between classic SaaS integration problems.
• Handling user-facing requests.
• Working on AI agent infrastructure.

Skills

Production experience in React/typescript

Production experience in Python

Production experience in SQL

Job description

Overview

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 prev 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

Application process

Given this is a founding role, there will be a comprehensive process spanning ~7-10 fastest.

1. Intro call - talk with the founder, Ishan (CEO)

2. Video screen - a 1.5 hr deep dive between Kevin (CTO)

3. in-person - come in-person for a worktrial

About SellScale

SellScale is building the first agentic sales org.

Background: At a business, you’re either building the product or selling it. Sales is the most expensive department - more than engineering, HR, marketing, and more, in large companies. (We wrote an article about it.)

Problem: As businesses grow larger, their sales spend grows disproportionately. Why? Sales—especially outbound—is still human-driven: it’s subjective, hard to measure, and doesn’t scale like code. This is exactly the kind of problem agents are built to solve.

Opportunity: With the advent of recent tech like agentic AI, large language models, vector DBs, and more - future sales is human x machine. Our agent, Selix, has already seen a lot of success.

Timing: Right now, we are in the dot-com boom of AI Agents. The agents we build help solve a business’s #1 problem: how to grow revenue. We use chained LLM thinking and state-of-the-art GTM tools to help companies grow.

Want to learn more? Check out our resources below:

Reference 1: Tencode Case Study

Reference 2: I’m AI BDR, and I’m Selix (I’m a Mac, I’m a PC Parody)

Reference 3: SellScale values