Full-Stack Developer

Quick Facts

• Focus: Backend APIs (Java/Kotlin, microservices) and Frontend (React)

• Responsibilities: build responsive web flows and integrate with backend endpoints

Description

Build and evolve full-stack product features across microservices backends and React frontends. You’ll design and adjust backend REST APIs (including mocks), develop responsive web components such as checkout funnels and registration paths, and integrate frontend/backend endpoints for onboarding with external partners. The role also leverages AI coding tools and agentic workflows to speed up delivery.

Responsibilities

• Design and adjust backend APIs and prepare backend mocks in Java or Kotlin using a microservices architecture

• Develop responsive web components, checkout funnels, and registration pathways using React, JavaScript, HTML, and CSS

• Integrate systems and endpoints to support onboarding and collaboration with external strategic partners

• Switch between backend enablement and web frontend development based on project priorities

• Use AI coding tools and agentic development workflows to accelerate full-stack delivery

Requirements

• 5+ years of experience in Java or Kotlin with microservices architecture

• Hands-on frontend experience with React, JavaScript, HTML, and CSS

• Understanding of REST API principles, JSON manipulation, and consuming backend endpoints

• Openness to using AI tools and LLMs for daily development and code generation

• English proficiency at B2+ level

• Must reside in and/or have work authorization in Poland

Benefits

• Work in a Scandinavian culture built on logic, trust, and open dialogue

• Health and sports benefits

• Speed Coaching sessions

• Sports training, internal team, and opportunities to take part in competitions