Founding Engineer – AI for Consumer Brands

Rnb Consultancy; New York (NY); On-site; USD 150,000 - 250,000; Full time

Job summary

A seed-stage AI company in New York is hiring 3 founding engineers to build the backend and data infrastructure that powers decision-making for brands on shelves. You will own core infrastructure for single-tenant and multi-tenant deployments and help pull structured data from messy sources at terabyte scale.

You will design and ship technical solutions across the stack, including production-grade AI workflows with Claude Code and related tooling, and contribute to the early architecture and

Qualifications

• At least 3 years as a backend or full-stack engineer, ideally on data pipelines or extraction systems.
• Proficiency in TypeScript in production plus a backend language (Python, Go, Java or Rust).
• Ownership mindset: able to ship end-to-end solutions at an early-stage startup.
• Experience with AI-first workflows and production-ready agent systems is a plus.

Responsibilities

• Build core infrastructure from the ground up for single-tenant and multi-tenant deployments.
• Pull structured data from messy sources at terabyte scale.
• Develop building blocks for multi-step agents with long memory and data access rules.
• Put production agents live at large enterprise customers.
• Collaborate with the founding team from day one.

Skills

Backend engineering

Full-stack engineering

Data pipelines

Extraction systems

TypeScript production

Python

Go

Java

Rust

AI-first workflows

Ownership at startup

Payments experience

Agent systems

Tools

Claude Code

Job description

Want to be one of the first engineers building how the offline economy makes decisions?

A seed-stage AI company in New York brings AI to the businesses behind the products on store shelves: consumer goods brands that sell through physical and online retailers. They're building the decision layer that finance, sales and operations teams at those brands run on. The founding team combines olympiad-level math and science backgrounds with experience building at well-known tech and finance companies, and is backed by leading Silicon Valley investors and operators.

They're hiring 3 founding engineers.

What you'll own

• Core infrastructure from the ground up, for both single-tenant and multi-tenant deployments
• Pulling structured data out of messy sources, at terabyte scale
• The building blocks for multi-step agents with long memory, plus the rules for what data they can access
• Putting production agents live at large enterprise customers
• How the early team works together, from day one

What you bring

• At least 3 years as a backend or full-stack engineer, ideally on data pipelines or extraction systems
• TypeScript in production, plus a backend language such as Python, Go, Java or Rust
• You design and ship technical solutions across the stack for products customers actually use
• You build AI-first: Claude Code (or similar) is part of your daily setup, including your own workflows and MCPs
• Experience with payments or agent systems, and good instincts when something breaks in production
• Real ownership at an early-stage startup (Series B or earlier)

Bonus points

• You were a founding or very early engineer and owned things end to end
• Palantir-style forward deployed experience in traditional industries
• Pipelines you built feed straight into a product customers use
• A fast rise to senior or staff scope

What's in it for you

• $150k–$250k base + 0.5–2% equity
• A founding seat: real ownership of architecture, product and culture
• Relocation to New York supported

Good to know

• Full-time, in the New York office five days a week, with long days (about 8 to 8)
• US work authorization without visa sponsorship is required
• Process: two founder conversations → technical session on something you built recently, including a quick design exercise → two-day work trial on site in New York → references → offer