Mid-Level Backend Developer (Node.js)

Quick Facts

• Role: Mid Backend Developer (Node.js) / AWS
• Location: Kraków, hybrid

Description

You will develop efficient, scalable, reliable backend systems for real-time TV and streaming experiences with live voting and audience interactions. The work focuses on handling large traffic spikes during major live events while keeping systems running in real time.

Responsibilities

• Build and evolve backend services supporting live, interactive streaming features.
• Deliver scalable, dependable systems capable of peak-load performance.

Requirements

• 3+ years of commercial backend development experience
• Hands-on knowledge of JavaScript/TypeScript/Node.js
• Experience with Express or NestJS
• Practical experience with MySQL or PostgreSQL
• Practical experience with Redis (NoSQL)
• Basic knowledge of AWS services: S3, Lambda, RDS, EC2, SQS, CloudFront, ECS
• Basic understanding of web application security
• English communication skills (at least B2)
• Engagement and a strong sense of responsibility for the product

Benefits

• Compensation: 12,000–17,000 depending on experience and skills
• B2B contract
• Hybrid work or remote work with occasional Kraków office visits
• Paid days off
• Multisport card