Senior Full-Stack Engineer — AI-Driven Backend & React

haus; San Francisco (CA); On-site; USD 180,000 - 260,000; Full time

Benefits offered by this job

Flexible PTO

Equity

Health insurance

WFH stipend

Team events

Job summary

Haus is building Architect, a product that translates measurement into actionable budget recommendations for marketers. You will implement end-to-end features from Python services to React interfaces, and collaborate with product, science, and design to shape the roadmap.

This full-stack role leans backend, requires 5+ years of production experience, and necessitates being in the office 3–5 days per week in San Francisco or nearby.

Qualifications

• 5+ years of experience building and shipping production web applications and APIs.
• Strong backend engineer in Python; most of the day-to-day is service and integration work.
• Working React proficiency: you can build the frontend for your own features.
• Comfortable in an ambiguous, product-facing role: you can take a half-formed request from a PM or scientist and turn it into a scoped plan.
• Experience with relational databases (MySQL/PostgreSQL) and data-heavy applications.
• Comfort with cloud-native environments (GCP preferred).
• Track record of working effectively with AI development tools (Claude, Cursor, Copilot).
• Excellent communication skills: you can explain technical tradeoffs clearly and work with scientists and PMs.

Responsibilities

• Design and ship backend services in Python that turn model outputs into recommendations, with correctness and observability.
• Build the React screens that let customers review, edit, and approve those recommendations.
• Integrate Architect with the rest of the Haus platform by defining API contracts and handling failure modes.
• Collaborate with product, science, and design on what to build, not just how.
• Raise the bar on the codebase with tests and monitoring.

Skills

Python backend

React frontend

APIs

SQL databases

Cloud (GCP)

AI tooling

Communication

Ambiguity handling

Tools

MySQL/PostgreSQL

SQLAlchemy

FastAPI

React

Job description

Haus is building Architect, a product that translates measurement into actionable budget recommendations for marketers. You will implement end-to-end features from Python services to React interfaces, and collaborate with product, science, and design to shape the roadmap.

This full-stack role leans backend, requires 5+ years of production experience, and necessitates being in the office 3–5 days per week in San Francisco or nearby.