pubGENIUS is a React.js and Next.js development agency and ad tech startup. We build web and AI products for clients in the US and Europe. Our focus areas include DeFi, fintech, and healthcare. We are hiring a Full-Stack Developer with a strong backend focus. You will work on real client products and internal systems using React, Node.js, TypeScript, and AWS. This is a full-time, contractor-based role. What You Will Do: Build and scale backend services using Node.js and TypeScript Develop frontend features and interfaces using React and TypeScript Design and implement event-driven systems using AWS Lambda, SNS, and SQS Develop and maintain APIs for web and mobile applications Write efficient queries for Aurora MySQL and work with Redis where needed Collaborate with PMs, designers, and developers on delivery Participate in planning, and architecture discussions Debug production issues and improve system performance Requirements Degree in Computer Science or a related field (required) 3+ years of software engineering experience Strong Node.js, TypeScript, and JavaScript knowledge Solid React experience for full-stack delivery Experience with AWS, especially Lambda, SNS, and SQS Experience with event-driven architecture Solid experience with MySQL, ideally Aurora Strong debugging and problem-solving skills Fluent English (written and spoken) Benefits Full-time, contractor-based engagement Fully remote — work from anywhere Flexible hours Paid vacation and sick days