Senior Front End Engineer

Knotch

. Build features across both Knotch ACE and Knotch One applications .

Posted 9/24/2026full-timeRemote • CanadaSenior💰 CA$135,000 - CA$175,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining React applications with a focus on TypeScript, multi-tenant theming, and accessibility standards. Capable of mentoring team members and collaborating effectively with cross-functional teams to deliver high-quality features.

Highest-signal resume keywords

React Application DevelopmentTypeScript ProficiencyNext.js Framework ExperienceAccessible UI DevelopmentData Visualization Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

ReactTypeScriptNext.jsCSSData VisualizationTesting FrameworksRuntime Schema ValidationClient State ManagementStreaming UI TechniquesMulti-Tenant Theming

Soft Skills

Clear Written CommunicationSelf-ManagementMentoring

Tools & Technologies

Tailwind CSSStyled-ComponentsEmotionEChartsD3VitestJestTesting LibraryPnpm WorkspacesTurborepo

Industry Keywords

Accessibility StandardsWCAG ComplianceAPI ContractsComponent System DevelopmentDesign Tokens

Tech Stack

Tools & technologies

D3.jsGraphQLJavaScriptJestNext.jsNuxtReactReduxTypeScript

About the role

Key responsibilities & impact

Build features across both Knotch ACE and Knotch One applications
Develop the component system that renders streamed, AI-generated layouts, including schemas, renderers, and contracts
Work on multi-tenant theming, design tokens, per-brand configuration, and client-specific variants
Build and maintain embeds that run the product inside customer websites
Set standards for testing, accessibility, and performance
Work with backend engineers on API and streaming contracts
Write technical approaches before building and raise blockers, risks, and disagreements early
Ramp up on unfamiliar parts of the product and codebase
Mentor others through code review, pairing, and written design
Own features end to end and collaborate directly with backend, data, and product teams

Requirements

What you’ll need

6+ years building React applications in production
TypeScript day to day, including typing data that arrives at runtime
Next.js App Router, or another framework with a server/client rendering split — Remix, Nuxt, SvelteKit
Experience in a large codebase with history, fitting into earlier decisions rather than starting clean
CSS at scale — utility-first (Tailwind) or CSS-in-JS (styled-components, Emotion)
Styling systems built on tokens or theme objects
Accessible UI work — keyboard navigation, ARIA, and testing against WCAG
Data visualization — ECharts, D3, Recharts or similar
Writing tests alongside features — Vitest, Jest, Testing Library or similar
Clear written communication and ability to work without close supervision
Ability to scope own work, unblock oneself, and communicate needs
Nice to have: Runtime schema validation — Zod, Valibot or similar
Nice to have: Streaming or incremental UI — SSE, WebSockets
Nice to have: Monorepo tooling — pnpm workspaces, Turborepo, Nx
Nice to have: Design tokens and multi-tenant theming
Nice to have: Embedding JavaScript into third-party sites — iframes, CSP, sandboxing
Nice to have: Client state management at scale (Redux, Zustand or similar) against a typed API layer, GraphQL or REST
Nice to have: Using AI-assisted tooling to move faster, and a view on where it helps and where it doesn't

Benefits

Comp & perks

Comprehensive health benefits through the employer of record (EOR) relationship with Globalization Partners
Unlimited PTO
Paid Holidays
Wellness Perks
Daily Company Break
Phone Plan Credit (select team members who have high phone usage for work)
Company Offsite