Contract: PJRemote positionRole OverviewWe are seeking a highly skilled Node Sr Developer with deep expertise across frontend and backend development to lead the design, development, and optimization of scalable, high-performance web applications. The ideal candidate combines technical excellence in NodeJS, AWS, domain experience in ecommerce shopping cart, buyer , sellers).Responsibilities:● Architecture & Development○ Translate business and technical requirements into well-designed, architected software services and user-facing applications.○ Lead the end-to-end development lifecycle across frontend and backend systems.○ Design and implement scalable, reusable, and high-quality code using NodeJS and modern ReactJS principles.○ Build backward-compatible, flexible APIs for seamless service integrations. ○ Integrate APIs, databases, and cloud services with UI components.○ Ensure applications follow responsive design principles and deliver a world-class user experience.● Quality & Performance○ Establish and enforce unit test coverage of 80%+ and maintain automation across testing pipelines.○ Write and maintain functional tests for mission-critical features.○ Debug, troubleshoot, and optimize performance across applications and services.○ Perform root cause analysis and resolve production issues promptly.Required Skills:● Fluent English● Expert proficiency in NodeJS and Express.● Expert in Kakfa , Jobs Queue, Event Driven Architecture, Asynchronous developing● Strong knowledge of SQL and relational databases (preferably PostgreSQL).● Experience with RESTful APIs, microservices architecture, and backend integrations.● Proficiency with AWS cloud services