Full Stack Software Engineer ($200K - $300K + Equity) at SellScale

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network

The next step is to speak to Jack .

Job Title: Full Stack Software Engineer (AI Agents / Product / Founding)

Salary: $200K - $300K + Equity

Company Description: SellScale - Pear VC-backed startup building the first agentic sales org

Job Description:
Join a high-intensity team as a founding engineer building Selix, an AI agent automating outbound sales. You will own features end-to-end across the full stack, transitioning between complex SaaS integrations and cutting-edge LLM infrastructure. This is a rare opportunity to shape the product and culture of a company solving a massive market problem.

Location: San Francisco, USA

Why this role is remarkable:

• Exceptional ownership with a 1-3% equity grant, offering true founding-level upside rarely seen at this stage.

• Backed by elite investors including Pear VC, Ovo Fund, and angels from Notion, Figma, and Dropbox.

• Build for the "99%" by creating sophisticated AI agents for non-technical users in the massive sales software market.

What you will do:

• Develop and deploy end-to-end features using React/TypeScript on the frontend and Python on the backend.

• Architect and scale AI agent infrastructure that utilizes chained LLM thinking and vector databases.

• Collaborate directly with the founders to translate customer needs into production-ready agentic workflows.

The ideal candidate:

• 2-5 years of professional experience at high-growth startups with a track record of shipping production-grade code.

• Deep technical proficiency in the stack: React, TypeScript, Python, and SQL database management.

• Entrepreneurial mindset ready for a high-velocity, in-office San Francisco environment as a founding team member.

Who are Jack & Jill?

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit our website .
Step 2. Click 'Talk to Jack' .
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.