Front-End Senior Engineer, Generative AI Applications

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August 17

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Cross River

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Banking • Fintech • SaaS

Cross River is a leading technology-focused financial company that provides API-driven banking infrastructure. They enable a wide range of financial services, leveraging partnerships with major payment networks like Visa, Mastercard, and American Express to offer card issuing solutions. Cross River supports innovation in financial services through a variety of products, including infrastructure for banks, digital lending solutions, faster payments like FedNow® and RTP®, and card and account programs for credit and debit. Their solutions cater to numerous sectors, redefining financial services with compliance-integrated solutions, serving neobanks, digital lenders, and various institutional credit investors.

501 - 1000 employees

Founded 2008

🏦 Banking

💳 Fintech

☁️ SaaS

💰 $620M Series D on 2022-03

📋 Description

• Design and implement responsive web applications using React (Next.js) and TypeScript that surface chat, summarization, and creative‑assist features powered by LLMs. • Integrate securely with backend GenAI APIs (REST/GraphQL, WebSocket) and handle real‑time streaming of model responses. • Build reusable UI components (TailwindCSS/shadcn/ui) and design systems 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 through code‑splitting, server‑side rendering (SSR), and efficient state management (React Query, Zustand, or Redux Toolkit). • Collaborate with product designers and ML/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.

🎯 Requirements

• Available working some US hours • Proficient in Hebrew and English both written and verbal, sufficient for achieving consensus and success in a remote and largely asynchronous work environment - Must • 4+ years professional experience building modern web applications with React or similar frameworks. • Strong TypeScript skills and 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 (e.g., 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).