Rockstar 3

Founding Product Engineer

Los Angeles, California, United States

Sponsorship not specified$150k-$225kDetected 24 days ago

TypeScriptSwiftReactPostgreSQLDatabricksDockerMachine LearningAgentic AIAccountingTaxERP5G/LTECommunication

About the role

Some days that means mapping how tax packages move through a firm.
The client is vertically integrated across software, AI agents, and managed back-office operations.
That makes the problems unusually concrete: if the product is wrong, the work breaks.

Own core product workflows for tax prep, tax review, bookkeeping, client requests, and practice-management operations.
Design and build product abstractions that turn messy accounting work into repeatable, reviewable systems.
Build interfaces, workflow states, data models, and agent behavior that hold up in live customer usage.
in Your First 30 Days Learn how CPA firms move work from source documents to reviewed tax packages, books, and client follow-ups.
Drive an AI-agent implementation loop from product plan to working feature.
tax preparation, bookkeeping, document collection, cleanup, review, close, and client operations.
You will work across product, design, engineering, and implementation.
Other days it means building a review workflow, designing an agent loop, tightening data models, or debugging why a customer workflow failed in production.
This is a product engineering role for someone who wants to build the system, not just spec it.
A small team where one strong engineer can own major product surfaces end-to-end.

Intro conversation about your background and what you have built.
Founder conversation focused on taste, pace, customer empathy, and how you work with AI agents.

$150,000-$225,000 Equity: 0.25%-1.00% equity About the Interview Their process is lightweight, practical, and tied directly to the actual work: Intro conversation about your background and what you have built.

They will run on AI agents that can understand firm context, do the repetitive prep work, and leave the judgment calls to experienced accounting professionals.
Skills AI Agents React Swift TypeScript Docker PostgreSQL Bonus Points Experience in accounting, finance, tax, audit, professional services, or another workflow-heavy enterprise vertical.
0.25%-1.00% equity About the Interview

Looking For You have strong programming skills and have shipped production applications, serious internal tools, or customer-facing automation.
You have high agency and can navigate ambiguity in messy customer environments where the problem is not handed to you cleanly.
You have an ownership mentality and are willing to do whatever it takes to make something work.
You have good communication skills to explain technical tradeoffs and earn trust with non-technical stakeholders.
You are comfortable using AI coding agents as your main implementation tool and holding their output to a high bar.
Previous founder experience or meaningful ownership at an early-stage startup.
Compensation Base Salary: $150,000-$225,000 Equity: 0.25%-1.00% equity About the Interview Their process is lightweight, practical, and tied directly to the actual work: Intro conversation about your background and what you have built.
Practical product/workflow exercise using a real or realistic back-office workflow.
Rockstar is recruiting for an innovative AI company building the back office for accounting firms.
They combine the judgment of experienced operators with the leverage of AI agents and reliable software to automate the most complex manual workflows inside
interfaces, automations, review loops, workflow primitives, data models, and agent behavior that work across customers.

This listing is sourced directly from Rockstar 3's careers page and normalized into a canonical job model.