Founding AI Backend Engineer — Seed Equity + Health

Day One Partners; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Premium health coverage

Team meals

Seed-stage equity

Job summary

Day One Partners is seeking a backend developer in San Francisco to build and scale AI-powered systems. Join a venture-backed startup creating technology to navigate chronic health conditions. You will have significant ownership over architecture and product direction, alongside competitive compensation and meaningful equity.

The ideal candidate will have strong experience in production software systems, enjoy ambiguity in a startup environment, and have a passion for AI and workflow automation.

Qualifications

• Strong experience building and scaling production software systems.
• Hands-on experience with Python and modern backend frameworks.
• Experience in fast-moving startup environments and comfort with ambiguity.

Responsibilities

• Build and scale backend systems, data pipelines, and AI-powered product infrastructure.
• Develop and improve recommendation systems, LLM integrations, and agent-driven workflows.
• Design systems that support secure, scalable health-related data experiences.

Skills

Experience building and scaling production software systems

Hands-on experience with Python

Interest in AI and workflow automation

Job description

Day One Partners is seeking a backend developer in San Francisco to build and scale AI-powered systems. Join a venture-backed startup creating technology to navigate chronic health conditions. You will have significant ownership over architecture and product direction, alongside competitive compensation and meaningful equity.

The ideal candidate will have strong experience in production software systems, enjoy ambiguity in a startup environment, and have a passion for AI and workflow automation.