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Senior Full Stack Developer (Java 21, React, Kafka)

Square One Resources · Remote, Warsaw, Poland · Hybrid · Senior

  • Remote, Warsaw, Poland · Hybrid

Indexed (today) · refreshed constantly

Budget
zł 150–175 / h
Start
ASAP
Work mode
Hybrid
Contract
Freelance / B2B
Seniority
Senior
Reference
2A0WEHRO

Required skills

Job description

- SIMPL is a European Commission initiative developing an open, modular middleware platform for secure data sharing and interoperability across European data spaces. The project focuses on full-stack development using React, TypeScript, Java 21, Spring, and Kafka, including API development, system integrations, and platform enhancements within an internation

Project overview

  • SIMPL is a European Commission initiative developing an open, modular middleware platform for secure data sharing and interoperability across European data spaces. The project focuses on full-stack development using React, TypeScript, Java 21, Spring, and Kafka, including API development, system integrations, and platform enhancements within an international Agile team.
  • The project is currently extended until April 2027.
  • Design, develop, test, and maintain frontend applications using JavaScript, TypeScript, and React.
  • Design and implement backend services using Java 21, Spring Framework, Spring Boot, Spring MVC, Spring Integration, and Spring REST.
  • Develop and maintain REST APIs and platform integrations.
  • Build and support event-driven integrations using Apache Kafka.
  • Develop and optimize relational database interactions and queries.
  • Create and maintain automated unit tests using JUnit.
  • Build and package applications using Maven and deploy them on Tomcat-based environments.
  • Ensure code quality through peer reviews, SonarQube analysis, and secure coding practices.
  • Address security findings and vulnerabilities identified through Fortify and other security scans.
  • Support deployment and operational activities using Argo and Rancher.
  • Investigate and troubleshoot technical issues using logs, monitoring, and Elasticsearch.
  • Maintain code, configuration, and technical documentation in Git repositories, Jira, and Confluence.
  • Contribute to continuous improvement initiatives and engineering best practices within SIMPL.
  • Large-scale platform or integration programmes
  • 5+ years of professional software development experience
  • Proven experience working in Agile / Scrum delivery teams
  • Experience using Git, Jira, and Confluence
  • English B2/C1

Project details

  • Start: ASAP
  • Location: Remote, Warsaw, PL
  • Rate: 150-175 EUR/h

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