pubGENIUS

Software Engineer (Backend focused)

📍 Location
Rio de Janeiro, State of Rio de Janeiro
⏰ Job Type
Full time
📅 Posted
June 03, 2026
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Job Description

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 backend developer with strong Node.js and AWS experience. You will work on real client products and internal systems. This is a project based, part-time role.

What you will do

• Build and scale backend services using Node.js 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 code reviews, planning, and architecture discussions
• Debug production issues and improve system performance

Team setup

You will join a team of around 15 people. Each p...

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