Founding Full Stack Engineer

Job Description

Job Description

Founding Product Engineer (Client Search) | AI + B2B SaaS | NYC (In-Person)

We're partnering with a seed-stage B2B SaaS startup building AI-powered sales software for the $9T chemicals industry, an industry still operating on PDFs, spreadsheets, and tribal knowledge.

Our client is tackling the “needle-in-a-haystack” problem for technical sales teams by combining deep domain expertise with AI agents. They have early customer traction, strong investor backing, and are now building their founding engineering team .

This is a confidential search for one of their earliest product engineers.

The Role

This is a founding-level Product Engineer role...high ownership, high trust, real influence.

You'll work directly with the founders and customers to build the core product from the ground up, shaping not just features, but architecture, workflows, and engineering culture.

If you enjoy zero-to-one work, shipping quickly, and owning outcomes end-to-end, this role was designed for you.

What You'll Do

Build and ship full-stack product features used by real customers

(React / TypeScript frontend, Python backend)

Translate customer pain into shipped functionality, fast

Make pragmatic technical decisions that balance speed with scale

Influence product direction, engineering standards, and team culture

Operate effectively without heavy process or rigid specs

What Our Client Is Looking For

4–8 years of professional software engineering experience

Strong full-stack capability (React / TypeScript + Python)

High agency : you unblock yourself, move fast, and take ownership

Comfort operating in ambiguity and early-stage environments

Clear communicator who enjoys working directly with customers

Excited to work in-person in NYC (4–5 days / week)

Nice to Have

Experience with LLMs, AI agents, or modern AI tooling

Background building data-heavy or workflow-driven applications

Previous startup or founding-team experience

Why This Opportunity

Founding-level impact : your work will shape the product and company

Immediate customer exposure : what you build gets used right away

Meaningful equity : above-market equity for early builders

Small, sharp team : autonomy, trust, and speed over bureaucracy

Compensation

$140k–$200k base

Generous, above-market equity

Interested?

Apply here or message us directly to learn more about the client, team, and opportunity.