Senior Front-End Engineer
Cross River
CypressJavaScriptJestReactTypeScriptWebpack
Senior Front-End Engineer, Generative AI Applications
Cross River
full-time
Posted on:
Location Type: Hybrid
Location: Jerusalem • 🇮🇱 Israel
Visit company websiteJob Level
Senior
Tech Stack
AWSD3.jsGraphQLJavaScriptJestNext.jsNode.jsReactReduxTypeScript
About the role
- Design and implement responsive web applications using React (Next.js) and TypeScript to surface chat, summarization, and creative‑assist features powered by LLMs
- Build reactive, data‑driven UIs (chat experiences, content editors, dashboards) that integrate with GenAI backend services (Node.js on AWS)
- Integrate securely with backend GenAI APIs (REST/GraphQL) and handle real‑time streaming of model responses (WebSocket/SSE)
- Build reusable UI components and design systems (TailwindCSS, shadcn/ui) for prompt inputs, context panes, and feedback collectors
- Implement client‑side observability (OpenTelemetry, Sentry) to monitor latency, errors, and usability of GenAI features
- Optimize performance via code‑splitting, server‑side rendering (SSR), and efficient state management (React Query, Zustand, Redux Toolkit)
- Collaborate with product designers, ML and backend engineers to iterate on prompt engineering, UI/UX flows, and evaluation loops
- Champion accessibility (WCAG 2.1 AA), localization, and responsive design to reach global audiences
- Participate in testing, CI/CD, and performance tooling integration (Jest, Playwright, GitHub Actions)
Requirements
- Available working some US hours
- Proficient in Hebrew and English both written and verbal
- 4+ years professional experience building modern web applications with React or similar frameworks
- Strong TypeScript skills; deep understanding of component architecture, hooks, and state management patterns
- Experience integrating with REST and GraphQL APIs
- Familiarity with real‑time protocols (WebSocket, SSE)
- Hands‑on exposure to LLM‑based products or services (chatbots, AI assistants, generative editors)
- Proficiency with CSS‑in‑JS or utility‑first frameworks (TailwindCSS) and responsive design best practices
- Working knowledge of CI/CD pipelines (GitHub Actions), automated testing (Jest, Playwright), and performance tooling (Lighthouse, Web Vitals)
- Exposure to design systems (Storybook) and Figma collaboration
- Knowledge of authentication patterns (OAuth, Cognito) and secure client‑side storage
- Background in data visualization (Recharts, D3)
- Champion accessibility (WCAG 2.1 AA), localization, and responsive design
Benefits
- Flexible hybrid model: 3 days a week in the office – A must
- ₪1,000 net monthly wellness benefit – from therapy to Pilates to your kid’s art class
- Full Keren Hishtalmut
- Private health & dental insurance
- Donation matching
- Volunteering days
- Team outings
- Mentorship programs
- Snacks
- Mission-driven culture that values ownership, trust, and meaningful impact
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard skills
ReactNext.jsTypeScriptNode.jsRESTGraphQLWebSocketSSETailwindCSSOpenTelemetry
Soft skills
collaborationcommunicationaccessibility advocacylocalizationresponsive design