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Founding Engineer ($150k-$250k + Equity) at Toolkit

Jack & Jill
San Francisco, CA
Full-time
Applications go directly to the hiring team

Full Description

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: Founding Engineer

Salary: $150k–$250k + Equity

Company Description: Toolkit - Seed stage AI-native IDE for finance teams backed by top Silicon Valley VCs

Job Description:

As employee #7, you will build the world's first agent orchestration platform specifically for finance. You'll design sophisticated systems that allow AI agents to navigate GAAP rules and complex multi-step workflows. This role is perfect for engineers who want to 10x their velocity using AI while maintaining elite engineering fundamentals.

Location: San Francisco, USA

Why this role is remarkable:

* Massive ownership as the 4th engineer on a 6-person founding team, directly influencing the product's architectural direction and technical culture.

* High-velocity environment with $3.4M in Seed funding from premier Silicon Valley VCs and a product already in private alpha with top-tier CFOs.

* Unique opportunity to define ""AI-native engineering"" by building internal systems that leverage coding agents to ship mission-critical financial infrastructure at frontier speeds.

What you will do:

* Architect agent orchestration infrastructure that maintains deep context and institutional knowledge across complex, multi-step financial workflows.

* Build a high-performance reconciliation engine capable of processing millions of rows and ingesting real-time data from ERP, CRM, and HRIS systems.

* Ship weekly customer-facing features based on direct feedback from CFOs, iterating rapidly on the balance between human direction and AI execution.

The ideal candidate:

* Proven experience designing scalable system abstractions and building robust scaffolds that ensure high-quality code outputs at scale.

* Passion for AI-frontier development and a desire to master the use of coding agents to radically accelerate engineering cycles without sacrificing quality.

* Strong product intuition with the ability to break down complex financial problems into parallelizable work streams and autonomous agent tasks.

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.

Applications go to the hiring team directly