Senior Full-Stack Engineer: React, Java & Kafka — Remote

Atos; Łódź; Remote; PLN 246,000 - 357,000; Full time

Job summary

Atos is seeking a Senior Software Engineer (Full Stack) to join an international team on the SIMPL Programme. The role is fully remote from Poland, working on secure, modular platforms for European data spaces.

You will implement backend services in Java 21 with Spring, build frontend apps in React/TypeScript, and develop REST APIs and integrations with Kafka in an Agile environment. Ideal candidates have 5+ years of hands-on full-stack experience, strong Java and React skills, and a solid

Qualifications

• 5+ years of professional software development experience, including hands-on full-stack development.
• Strong practical experience with Java, ideally Java 21, Spring Framework and Spring Boot.
• Strong hands-on experience with React and TypeScript.
• Solid experience in REST API design and integration.
• Practical experience with Apache Kafka and event-driven integrations.
• Good knowledge of relational databases and database interactions.
• Experience with automated testing, JUnit, Git and code-review practices.
• Experience working within Agile/Scrum delivery teams.
• Understanding of secure coding and software quality practices.
• Ability to work independently and collaborate effectively within an international, cross-functional team.
• Very good command of English.

Responsibilities

• Design, develop, test and maintain backend services using Java 21, Spring Framework and Spring Boot.
• Develop modern frontend applications using React, TypeScript and JavaScript.
• Design, develop and maintain REST APIs and platform integrations.
• Build and support event-driven integrations using Apache Kafka.
• Develop and optimize application interactions with relational databases.
• Ensure high code quality through automated testing, peer reviews, JUnit, SonarQube and secure coding practices.
• Identify and address security findings and vulnerabilities, including Fortify and other security scans.
• Build and package applications using Maven and support deployment and operational activities in Tomcat-based environments, Argo and Rancher.
• Investigate and troubleshoot technical issues using logs, monitoring tools and Elasticsearch.
• Maintain code, configuration and technical documentation using Git, Jira and Confluence.
• Contribute to engineering best practices and continuous improvement across the programme.

Skills

Java 21

Spring Boot

React

TypeScript

REST API

Apache Kafka

Databases

JUnit

Git

Agile/Scrum

Security

Tools

Maven

Tomcat

Argo

Rancher

Elasticsearch

Confluence

Jira

SonarQube

Job description

Atos is seeking a Senior Software Engineer (Full Stack) to join an international team on the SIMPL Programme. The role is fully remote from Poland, working on secure, modular platforms for European data spaces.

You will implement backend services in Java 21 with Spring, build frontend apps in React/TypeScript, and develop REST APIs and integrations with Kafka in an Agile environment. Ideal candidates have 5+ years of hands-on full-stack experience, strong Java and React skills, and a solid