Full-Stack Engineer — Kotlin & React, Microservices

Xebia; Poland; On-site; PLN 150,000 - 230,000; Full time

Job summary

Xebia, a global AI-first software partner, is seeking an experienced developer to work across backend and frontend in Poland. You will build microservices with Java and Kotlin, design REST APIs, and create React components to support fast feature delivery.

You should have 3+ years of commercial experience, strong Java and Kotlin skills, microservices know-how, and proficiency in HTML/CSS and JSON. Join a cross-functional team delivering data-driven solutions with a people-first culture.

Qualifications

• 3+ years of commercial software development experience.
• Strong knowledge of Java and Kotlin.
• Hands-on microservice architecture experience.
• Proficient in HTML and CSS.
• Solid understanding of REST API design and consumption.
• Practical experience with JSON.

Responsibilities

• Developing and enhancing microservices using Java and Kotlin.
• Designing, developing, and modifying REST APIs and backend mocks.
• Building web components and purchase/registration flows with React.
• Working across backend and frontend and adapting to project needs.
• Integrating solutions with external business partners and supporting partner-facing functionalities.
• Collaborating with the team to deliver new features quickly and efficiently.
• Contributing to continuous product and solution improvements.

Skills

Java

Kotlin

Microservices

HTML

CSS

REST API design

JSON

Job description

Xebia, a global AI-first software partner, is seeking an experienced developer to work across backend and frontend in Poland. You will build microservices with Java and Kotlin, design REST APIs, and create React components to support fast feature delivery.

You should have 3+ years of commercial experience, strong Java and Kotlin skills, microservices know-how, and proficiency in HTML/CSS and JSON. Join a cross-functional team delivering data-driven solutions with a people-first culture.