Senior Back-End Engineer Node.js

We are At Cross River, we're building the financial infrastructure that powers global innovation. With our cutting-edge suite of embedded payments, cards, and lending solutions, we enable millions of businesses and consumers to transact seamlessly and securely. With 900+ employees worldwide and an R&D center of over 160 employees in Jerusalem - we’re reshaping how financial technology is developed and delivered. .

Requirements: What You Bring to the Table •  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 • Hands-on production experience with Large Language Models, prompt engineering, RAG workflows, agent frameworks, and LLM evaluation strategies. • Experience building and consuming MCP servers. • 5+ years of professional software development with a proven record on complex full-stack systems. • Experience with modern JavaScript (ES6+), React, state management (Redux, Zustand, or similar) at scale. • Hands-on experience architecting on AWS (DynamoDB, S3, RDS, Lambda, and API Gateway). Knowledge of Infrastructure as Code (Terraform) is a plus. • Deep understanding of TDD, CI/CD pipelines, and Agile/Scrum leadership. • Ability to debug problems across distributed systems and optimize bottlenecks in real-time data flows. • Great communicator with the ability to influence technical direction and manage stakeholder expectations.