Senior Full Stack Developer (Kotlin)

Quick Facts

• Role: Senior Full Stack Developer (Kotlin)

• Collaboration: B2B

• Work model: Hybrid (Wrocław) or 100% remote

• Focus: Retail Security solutions (backend-heavy, optional frontend)

• Tech stack: Java (17/21), Kotlin, Spring, GCP, CloudFoundry, GitLab, CI/CD, Claude Code

Description

Join an interdisciplinary team building modern solutions for retail security. The project is mainly focused on creating new backend systems, with the possibility to take part in frontend tasks (e.g., co-creating the user interface) and using AI to analyze and process visual data.

Responsibilities

• Consult on the creation of backend and frontend solutions

• Support building microservices for an existing system in an event-driven architecture (EDA)

• Ensure high code quality, availability, security, performance, scalability, and reliability

• Occasionally support application maintenance and resolve issues reported by users

Requirements

• Minimum 5 years of experience delivering commercial projects with Java/Kotlin and Spring

• Willingness to work in a “You build it, you run it” model (end-to-end responsibility from requirements to production)

• Practical experience with cloud-based infrastructure

• Polish (C1 minimum) and English (B2 minimum) to collaborate comfortably in the team

Benefits

• B2B cooperation

• Hybrid or 100% remote work option

• Compensation: 140–180 PLN/h + VAT