Founding Engineer

Fabrion; San Francisco (CA); On-site; Full time

Benefits offered by this job

Competitive salary

Meaningful equity

Autonomy in building systems

Job summary

A cutting-edge technology firm in San Francisco is seeking a Founding Engineer (Full Stack) to design and build their platform from the ground up. In this role, you will have the opportunity to provide significant input into the tech stack and company culture while working with large-scale data systems and AI-native agents. Ideal candidates should have over 5 years of experience in full stack or backend engineering, and familiarity with modern frontend frameworks such as React and Next.js. This is a highly autonomous role offering competitive salary plus equity.

Qualifications

• 5+ years as a full stack or backend engineer.
• Experience owning and delivering production systems end-to-end.
• Familiarity with modern frontend frameworks.

Responsibilities

• Architect and build scalable APIs and backend services.
• Contribute to data pipelines, web UIs, and deployment systems.
• Design internal tooling and CI/CD pipelines.

Skills

Full Stack Engineering

Cloud Infrastructure

API Development

Frontend Frameworks

Backend Development

Team Collaboration

Tools

TypeScript

Python (FastAPI)

React

Next.js

Postgres

Docker

AWS

Job description

Founding Engineer (Full Stack)

Location: San Francisco Bay Area

Type: Full-Time

Compensation: Competitive salary + meaningful equity (founding tier)

About the role

We’re hiring a founding full stack engineer to help architect and build the platform from day one. This is a unique opportunity to own a significant portion of the tech stack and grow into a leadership role with considerable upside in equity. You’ll be working on infrastructure that combines large‑scale data systems with AI‑native agents. This is a highly autonomous, high‑leverage role with ownership over core architecture and early team culture.

You’ll be writing production code across backend and frontend, defining interfaces between components, shaping devops and data infrastructure, and helping translate abstract concepts into working systems. If you’re someone who prefers fast feedback, direct impact, and long‑term upside, this is for you.

Responsibilities

• Architect and build scalable APIs, backend services, and web application components
• Contribute across the stack: data pipelines, agents, web UIs, deployment systems
• Design and implement internal tooling, testing frameworks, and CI/CD pipelines
• Collaborate closely with product and design to prototype and ship features quickly
• Help define engineering processes, contribute to documentation, and grow the early team

Our Stack

• Languages: TypeScript (Node.js), Python (FastAPI)
• Frontend: React, Next.js, Tailwind, shadcn/ui
• Backend: Postgres, DuckDB, GraphQL (Hasura), Kafka, REST
• Cloud/Infra: AWS, Docker, GitHub Actions, ArgoCD, Kubernetes (basic)
• AI/Agents: LangChain, LangGraph, OpenAI, Anthropic, LLaMA, Pinecone, Qdrant
• Governance: Keycloak, Open Policy Agent (OPA), OpenTelemetry, Slack integrations
• Visualization: Vega, Flourish, React ReChart
• Connectors: ERP, PLM, Excel, Email, Web APIs

What We’re Looking For

Experience

• 5+ years as a full stack or backend engineer
• Experience owning and delivering production systems end-to-end
• Prior experience with modern frontend frameworks (React, Next.js)
• Familiarity with building APIs, databases, cloud infrastructure, or deployment workflows at scale
• Comfortable working in early‑stage startups or autonomous roles; prior experience as a founder, founding engineer, or a 0‑1 pre‑seed startup is a big plus

Mindset

• Comfortable with ambiguity, eager to prototype and iterate quickly
• Strong sense of ownership — prefers to build systems rather than wait for tickets
• Enjoys thinking about architecture, performance, and tradeoffs at every level
• Clear communicator and pragmatic team player
• Values equity and impact over prestige or hierarchy
• Prior startup or founding team experience

Bonus

• Contributions to open‑source or internal tools with impact
• Interest in data systems, agent workflows, or LLM orchestration

Why Join

• True ownership — early equity and influence over product and technical direction
• Mission‑driven team solving complex data and AI problems with real‑world impact
• Strong engineering culture focused on velocity, clarity, and long‑term thinking
• Learning curve across AI, data infra, agents, and enterprise‑scale platforms
• Early access to cutting‑edge AI workflows and deployment patterns

If you want to build systems that learn, act, and evolve — with the autonomy to shape the stack and the team — we’d love to hear from you.

Other Details

Seniority level: Mid‑Senior level

Employment type: Full-time

Job function: Engineering and Information Technology

Industries: Technology, Information and Internet