Senior Fullstack Engineer - AI-Native, Hybrid Warsaw

Kunya; Warszawa; Hybrid; PLN 835,865 - 1,063,829; Full time

Job summary

Kunya in Warsaw is hiring a Senior Fullstack Engineer to build AI-native product experiences across the stack in a hybrid setup.

You will own features from concept to production, collaborating with design and product, and improving performance and velocity across the stack.

The role emphasizes fast iteration, ownership, and contributing to an engineering culture while working asynchronously and in person in Warsaw.

Qualifications

• 2+ years building production software across frontend and backend.
• Experience with modern web apps and backend services.
• Own problems end to end in a fast-moving environment.
• Experience with APIs, databases, performance, debugging in production.
• Strong written and verbal communication.

Responsibilities

• Build features across frontend, backend, APIs, and supporting systems.
• Partner with design and product to ship ideas from concept to production.
• Improve reliability, speed, and developer velocity across the stack.
• Help simplify AI and media workflows for users.
• Shape architecture and technical choices with practical execution.
• Contribute to engineering culture through code review and ownership.

Skills

Frontend & Backend

Web Applications

APIs & Databases

Production Debugging

Ownership & Velocity

Communication

Job description

Kunya in Warsaw is hiring a Senior Fullstack Engineer to build AI-native product experiences across the stack in a hybrid setup.

You will own features from concept to production, collaborating with design and product, and improving performance and velocity across the stack.

The role emphasizes fast iteration, ownership, and contributing to an engineering culture while working asynchronously and in person in Warsaw.