Full‑Stack Developer - .NET/C# & Angular/React, AI‑Driven

SINGU; Kraków, Warszawa; On-site; PLN 180,000 - 300,000; Full time

Job summary

SINGU is seeking a Full Stack Developer to join our product team in Kraków. You will contribute across backend architecture and customer-facing interfaces, collaborating with a Team Lead, Product Manager, and Product Designer to deliver reliable, secure software.

You’ll participate in code reviews, uphold strong testing practices, and use AI-assisted development tools to speed delivery while maintaining code quality. A collaborative, Agile environment awaits.

Qualifications

• Solid hands-on experience with .NET and C#.
• Experience building interfaces in Angular/React and TypeScript.
• Experience designing REST APIs and working with PostgreSQL.
• A genuine testing habit — unit and integration tests as standard practice.

Responsibilities

• Build and evolve backend applications in .NET and C#.
• Design REST APIs that are consistent, secure, and well-documented.
• Work with PostgreSQL database structures and optimize queries, indexes, and performance.
• Build user interfaces in Angular/React and TypeScript; participate in frontend rewrite.

Skills

NET

C#

Angular

React

TypeScript

REST APIs

PostgreSQL

Testing

CI/CD

English communication

Tools

PostgreSQL

GitHub

CI/CD

Job description

SINGU is seeking a Full Stack Developer to join our product team in Kraków. You will contribute across backend architecture and customer-facing interfaces, collaborating with a Team Lead, Product Manager, and Product Designer to deliver reliable, secure software.

You’ll participate in code reviews, uphold strong testing practices, and use AI-assisted development tools to speed delivery while maintaining code quality. A collaborative, Agile environment awaits.