Contract: PJ Remote position Role Overview We 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