Build and scale an AI-powered full‑stack editor and experimentation platform. Implement backend services, ship intuitive React UIs, integrate APIs and AI models, collaborate with founders and customers, and own end-to-end features in a fast-paced startup.
This job is for a client of Weekday. One of the fastest growing YC startups. We will fast track your application if you apply here.
About UsWe’re an early-stage startup building AI-driven tools that help consumer apps optimize user experiences automatically. Our product is already live and used by millions globally, with rapid month-over-month growth.
We’re backed by top-tier investors and operators, and we’re just getting started.
Raised more than $5mn and recently launched the product
The RoleWe’re hiring a full-stack engineer to help us build and scale our AI-powered experience editor. You’ll work across the stack—front-end and back-end—and play a key role in shaping the product and infrastructure.
This is a high-impact role with lots of ownership, fast iteration, and exposure to real-world scale.
What You'll Do- Build core features of our AI-driven editor and experimentation platform
- Write scalable back-end code and ship clean, intuitive UIs
- Integrate new APIs and AI models to power smart user experiences
- Collaborate closely with founders and customers
- Own projects end-to-end in a fast-paced, hands-on environment
- Full-time, in-person role based in San Francisco (Mon–Sat)
- Must be authorized to work in the U.S.
RequirementsWhat We're Looking For
- 3+ years of software engineering experience
- Strong problem-solving ability and a bias for action
- Comfortable working across the stack (Python, React, etc.)
- Prior experience building user-facing products
- Strong communication and collaboration skills
- Experience with AI/ML tools or APIs
- Familiarity with mobile platforms
- Past experience at an early-stage or fast-growing company
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