Our client is an exciting AI Start up company and they have an immediate need for a Frontend Engineer. This position will own the decision surface enterprise that senior leaders will act on every day.

You will own that experience end to end: the widget and data-visualization system, the design system, and the onboarding and polish that make enterprise users want to live in the product every day.

Responsibilities

- Own and evolve the decision surface: the SSR routes, the auth and session flow, and the overall front-end architecture.

- Build out the widget and data-visualization system: chart types, per-source breakdowns, color palettes, and an add-widget builder, driven by the front-end state layer.

- Shape the insights deck and Kanban: the surfaces where operators triage AI-detected insights, drag them across columns, assign owners, and work action-step and comment threads.

- Wire the front end to the backend data API, tuning the metric catalog, theming, and export layers.

- Define and grow a coherent design system: components, tokens, motion, and empty, loading, and error states, so new surfaces ship fast and feel consistent.

- Build onboarding and connection flows (OAuth-backed source connections, first-run experiences) that get a new enterprise tenant to first insight quickly.

- Partner directly with the Head of Engineering on product and UX decisions,



and help define what polished means.

- Keep the front end honest with the multi-tenant model: every view is tenant-scoped and never leaks across boundaries.

Requirements

- Strong TypeScript and React experience and a genuine eye for UI and UX;

- Real data-visualization sensibility;

Experience building charts and dashboards and can reason about representing multi-source, time-series data clearly.

- Comfortable owning a front end end to end: component architecture, state management, performance, and accessibility.

- Experience integrating REST and JSON APIs and shaping and normalizing server data for the UI.

- Product instinct; you can take an ambiguous request to make a flow better and turn it into shipped, tested UI.

- Comfortable in a startup setting: high ownership, low ceremony, comfortable with early-stage ambiguity.

- Able to be in the Toronto office two days a week.

Nice to Haves

- Experience with a modern SSR or islands framework and a utility-first CSS framework.

- Built or maintained a design system or component library.

- Familiarity with multi-tenant SaaS patterns (Postgres, row-level security).

- Exposure to the digital advertising or marketing-analytics domain.

- Comfort dipping into the Python backend when a feature needs it.

📌 Frontend Engineer (Greater Toronto Area)
🏢 RedBranch Executive Search u0026 Recruitment
📍 Greater Toronto Area