Senior Frontend Engineer

Weave•San Francisco, CA

4d•$175,000 - $225,000•Hybrid

About The Position

Weave is seeking a Senior Frontend Engineer to join their team. The role focuses on building a collaborative document platform, emphasizing craft, usability, and customer-centric solutions. The engineer will translate customer understanding into intuitive frontend experiences, collaborate with Product and Design, and architect real-time collaborative editing features. The position requires writing high-quality, performant TypeScript and React code, driving technical direction, and delivering value iteratively. Weave aims to evolve how therapeutic knowledge is captured and communicated in drug development using AI instruments.

Requirements

5+ years of production experience building modern web applications with React, TypeScript, and the broader frontend ecosystem (state management, bundlers, testing frameworks, design systems).
AI-augmented engineering expertise: You're a skilled engineer first and you use AI-powered tools (e.g., Cursor, Claude) to meaningfully accelerate your workflow. You know how to leverage AI for code generation, exploration, debugging, and documentation while applying the deep technical judgment needed to evaluate, refine, and take full ownership of everything you ship.
Startup experience: You've worked at an early-stage, product-focused company (ideally <50 people) and know how to operate with autonomy, ambiguity, and limited resources.
Strong product instincts: You think beyond the component; you consider the user journey, edge cases, accessibility, and how your work connects to business outcomes.
Bias toward action with high standards: You move quickly without cutting corners. You know when to optimize and when to ship, and you're comfortable making that call.
Pragmatic, clear thinking: You break down complex problems efficiently, make decisions with conviction, and communicate your reasoning to teammates.
Collaborative mindset: You give and receive feedback generously, elevate the people around you, and care about the team's success as much as your own.

Nice To Haves

Experience building rich text editors or real-time collaborative features (e.g., Slate, ProseMirror, Yjs, Liveblocks).
Familiarity with a regulated domain or a product where data privacy and security are first-class concerns.
Contributions to open-source projects or a track record of sharing knowledge with the broader engineering community.

Responsibilities

Customer-centric problem solving: Deeply understand how customers use our product, then translate that understanding into intuitive, elegant frontend experiences.
Collaborative product development: Partner closely with Product and Design to shape what gets built. You'll have a seat at the table from ideation through delivery.
Real-time, collaborative editing: Architect and build a rich document editor with multiplayer collaboration features (think CRDTs, presence indicators, conflict resolution) that feels seamless at scale.
High-quality frontend code: Write performant, well-tested TypeScript and React that your teammates (and your future self) will thank you for. We value readability, maintainability, and thoughtful abstractions.
Technical direction: Drive software design decisions on your projects, managing conceptual and technical complexity so the codebase stays healthy as the product grows.
Continuous delivery of value: Balance speed with quality. Ship iteratively, measure impact, and refine based on real-world usage.