Software Engineer

Jack & Jill
San Francisco, California, United States · New York City, New York, United StatesFull-time$150,000–$270,000Posted Aug 27, 2026

About the role

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

Software Engineer

Salary

$150k–$270k + Equity

Company Description

VC-backed AI fintech platform

Job Description

You will own features end-to-end across an AI-native ERP, from backend architecture to user interfaces. Partnering with product and finance experts, you’ll build automated workflows that drive zero-day closes for high-growth companies. You’ll raise engineering standards through continuous delivery and TDD while helping scale the team through mentorship and collaboration.

Location

San Francisco and New York City, USA

Why this role is remarkable

Join a high-performance team building the first AI-native ERP designed to automate complex financial operations.

Backed by top-tier VCs with significant funding, ensuring stability and rapid growth in a massive market.

Directly impact the product by working closely with customers and making critical technical decisions from first principles.

What You Will Do

Architect and build full-stack features using Kotlin, Spring Boot, and Svelte 5 to automate accounting workflows.

Collaborate with cross-functional teams to design systems that solve complex financial data and integration challenges.

Maintain high technical standards through code reviews, automated testing, and ensuring production reliability at scale.

The ideal candidate

Has 5+ years of experience engineering complex, large-scale systems with strong backend fundamentals and frontend proficiency.

Possesses strong product instincts and the ability to navigate difficult technical tradeoffs with the user in mind.

Thrives in high-agency environments where they can design strategies and deliver results without needing constant assignments.

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.

How does this work?

Jack's an AI agent for job searching and career coaching. He works for you.

Jill is the AI recruiter working for the company. She recruits from Jack's network.

If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

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.

Responsibilities

  • Architect and build full-stack features using Kotlin, Spring Boot, and Svelte 5 to automate accounting workflows
  • Collaborate with cross-functional teams to design systems that solve complex financial data and integration challenges
  • Maintain high technical standards through code reviews, automated testing, and ensuring production reliability at scale

Qualifications

  • 5+ years of experience engineering complex, large-scale systems with strong backend fundamentals and frontend proficiency
  • Possesses strong product instincts and the ability to navigate difficult technical tradeoffs with the user in mind
  • Thrives in high-agency environments where they can design strategies and deliver results without needing constant assignments

Benefits

  • Equity

Skills mentioned

KotlinSpring BootSvelteBackend DevelopmentFrontend DevelopmentSoftware TestingTest-Driven DevelopmentCI/CDSystem DesignAPI Integration

About Jack & Jill

Meet Jack and Jill. Two AI agents that introduce remarkable people to remarkable companies. Jack is an AI agent that finds your next job and helps you land it. Already helping over 230,000 people take the next step in their career. Jill is an AI agent for recruiting. Already helping thousands of companies make their next great hire. Here's where it gets interesting. Jack and Jill work together. Jack knows what professionals are looking for, long before they're ready to move. Jill knows what thousands of companies need, far beyond what's written in the job description. When both sides match, they introduce the candidate and the decision maker directly. No cold outreach. No black hole. Just warm introductions that work.

Technology2-10 employees