About Playbook

Playbook is building the Operating Memory for regulated industries.

In life sciences and other highly regulated sectors, companies run on thousands of written procedures — SOPs, work instructions, policies, manuals, and how-to guides. Employees are expected to find, understand, follow, and stay trained on the right procedure at the right moment. That system is breaking under the weight of information overload.

Playbook turns procedural documents into structured, usable data — making critical operational knowledge consumable by humans, software systems, and AI agents. This living layer of procedural knowledge is what we call Operating Memory.

We work with leading global life sciences companies and are building the foundational data model for procedural knowledge in regulated industries. We're an early-stage, founder-led company with high ambition, high standards, and a strong bias toward execution.

Why now

Enterprise AI agents can't run on fragile data pipelines. They need deterministic, auditable, and low-latency infrastructure under the hood.

The Role

Our frontend spans multiple applications and a growing set of shared libraries — a large, mature codebase where changes have to be made deliberately, not bolted on. We're partway through consolidating it into a single Nx monorepo, and our design system has to hold up as the product grows across desktop, tablet, and floor use.

We're hiring a Senior Frontend Developer to design and build features in this codebase end-to-end, from spec to production. You don't need to write C#, but you'll shape and consume the APIs our .NET/ASP.NET Core backend exposes. Your job is to own the quality of what ships — component boundaries, state and data-fetching patterns, render performance, bundle size — and to have a direct hand in how our project graph, shared libraries, module boundaries, and CI pipeline end up looking.

You will report directly to our VP of Platform Engineering and operate as a senior Individual Contributor, reviewing code and setting the standard the rest of the team codes to. Your KPIs are concrete: render performance and bundle size across the frontend, real-device reliability on tablet and phone, and steady progress on the Nx consolidation without breaking the teams building on top of it.

What you'll own

• Design and build features in our React + TypeScript frontend, working closely with our .NET/ASP.NET Core backend and the APIs it exposes

• Own the quality of what you ship, including sensible tests, sane error states, and an eye on bundle size and render performance

• Take an architectural view of component boundaries, state management, and data-fetching patterns, and help our design system scale

• Review code thoughtfully and set the standard the rest of the team codes to

• Work in a large, mature codebase spanning multiple applications and a growing set of shared libraries, where changes are made deliberately

• Help drive our move to an Nx monorepo, shaping the project graph, shared libraries, module boundaries, and CI/CD pipeline, while keeping tooling and dependencies current

Life sciences manufacturing — We work with leading global life sciences companies, where procedures define outcomes

What you'll bring

• 5+ years building production frontends, with real depth in React and TypeScript

• Strong fundamentals: modern JavaScript, the DOM, browser rendering, accessibility, and CSS that holds up with real content

• Comfortable in a modern toolchain: Vite (or similar), package managers, CI, Git-based workflows

• Experience reasoning about state and data-fetching trade-offs at scale (e.g. React Query/TanStack, Zustand), not tied to one specific tool

• You debug from evidence, aren't afraid to read a dependency's source, and take ownership of ambiguous work through to conclusion

• Genuine responsive and cross-device experience, since many users are on tablets or phones on the floor, not just at a desk

Nice to have

• Design systems or component library experience

• Hands-on with monorepo tooling (Nx, Turborepo) or a migration into one

• Testing across levels (Vitest/Jest, RTL, Playwright)

• Exposure to .NET or another strongly typed backend

• Experience with PDF tooling, complex data tables, or rich-text editors

• Fluent with AI-assisted dev tooling as leverage, not a shortcut