Full-Stack Developer (Backend-Focused)

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