Founding Engineer, Platform ($225K - $300K + Equity) AI-Driven Workflow Solutions

CoffeeSpace; San Francisco (CA); On-site; USD 225,000 - 300,000; Full time

Job summary

CoffeeSpace, an anonymous seed-stage AI-agent data and workflow platform, is recruiting for a Founding Engineer, Platform in San Francisco. You’ll own the backend engine behind every customer workflow, including scheduling, queues, integrations, and ensuring scalability and data consistency at high volume.

You will work closely with the technical co-founder on production-grade infrastructure using a modern stack (TypeScript, Effect, Postgres, Redis, React, Vite).

Qualifications

• 5+ years of production engineer experience.
• Experience with Effect or functional TypeScript.
• Experience building production job systems, queues, or data pipelines at scale (high-volume data infrastructure).
• Experience at an early-stage startup (seed to Series A/B, ex-founder, or Founding Engineer)

Responsibilities

• Own the core of the workflow engine, addressing real scale and uptime demands.
• Design and implement features from scoping through delivery.
• Collaborate with the technical co-founder on infrastructure and architecture.
• Utilize a modern tech stack: TypeScript, Effect, Postgres, Redis, React, Vite, TanStack, ElectricSQL

Skills

Production engineering

Effect (functional TypeScript)

Data pipelines

Job queues

Tools

TypeScript

Effect

PostgreSQL

Redis

React

Vite

TanStack

ElectricSQL

Job description

This role is being recruited by CoffeeSpace on behalf of an anonymous seed-stage AI-agent data and workflow platform.

We’re identifying a small number of exceptional founding engineers from our network. If there’s a strong fit, we’ll introduce you directly to the founding team.

Compensation: $225K - $300K base + 0.5% - 1.0% equity

Employment type: Full-time

About the company

This company provides a data and workflow layer for go-to-market teams, enabling users to build and run workflows through AI agents. The platform enriches, scores, and syncs company and contact data for use with tools like HubSpot and Salesforce.

Founded in 2023, the company has secured $5.9M in funding and operates with a team of 13. It serves industries including AI, B2B, data, devtools, and software development.

About the role

As a Founding Engineer, Platform, you will own the backend engine behind every customer workflow. This includes managing scheduling, queues, integrations, and ensuring the scalability, data consistency, and availability of the system. This role offers a high degree of autonomy, allowing you to take features from scoping through delivery and shape the platform architecture.

You will work closely with the technical co-founder on production-grade infrastructure at high volume. The tech stack includes Effect and functional TypeScript, with a workflow engine moving toward a custom compiler and eval stack.

What You’ll Do

• Own the core of the workflow engine, addressing real scale and uptime demands
• Design and implement features from scoping through delivery
• Collaborate with the technical co-founder on infrastructure and architecture
• Utilize a modern tech stack: TypeScript, Effect, Postgres, Redis, React, Vite, TanStack, ElectricSQL

Why This Role Is Compelling

• Founding-level autonomy with the opportunity to shape the platform architecture
• Work on agent-first product design with a custom eval stack
• Equity upside at a seed-stage company
• Engage with a modern tech stack and high-volume production-grade infrastructure

The Ideal Candidate

• 5+ years of production engineer experience
• Experience with Effect or functional TypeScript
• Experience building production job systems, queues, or data pipelines at scale (high-volume data infrastructure)
• Experience at an early-stage startup (seed to Series A/B, ex-founder, or Founding Engineer)

This is a real, active role that CoffeeSpace is recruiting for in close partnership with the hiring team. We don’t post speculative roles and work directly with teams on their actual hiring needs.