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Senior Fullstack Developer - Java & React (M/F)

ASTEK PolskaKrakównofluffjobspublished 08/31/2026
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Must-have:TypeScriptJavaReactGitGoogle CloudFrontendBackendFullstackCI/CDSenior
Machine translation — original language: Polish.Show original

Currently, for our international client, we are looking for a candidate for the position of Senior Fullstack Developer - Java & React (M/F). The Developer will develop and maintain applications, working mainly on the backend side in Java (approx. 60%) and the frontend in React and TypeScript (approx. 40%).

Additional information Hybrid work (2-3 days of work from the office per week) Kraków _________________________ Ref. no.: AO239881

Daily tasks

  • Development, testing, and debugging of new functionalities and existing applications
  • Creating and developing backend solutions in Java 17+
  • Creating frontend parts in React and TypeScript
  • Working with APIs and integrations based on REST, JSON, and SOAP
  • Ensuring performance, stability, and high code quality
  • Participating in solution design and proposing improvements
  • Collaboration with product and technical teams
  • Participating in the development of quality processes, testing, and programming best practices

Requirements

You will excel in this role if: You have extensive, practical experience working with Java (17+) You have experience working with React and TypeScript You know REST, JSON, SOAP and have experience with Git, Maven, and Elastic Stack You know CI/CD processes and tools, experience with GitHub Actions is welcome You know / have experience with Infrastructure as Code (Terraform) You know monitoring and alerting tools You know the basics of Linux and shell scripting You know cloud technologies, preferred knowledge of GCP You use English in speaking and writing at a very good level (min. B2) You possess analytical thinking skills and effective teamwork skills Nice to have: Experience with SonarQube, Veracode, or other code quality and security analysis tools Knowledge of testing practices, including smoke, integration, and acceptance tests Experience working on complex applications and systems

Must have: Java, React, TypeScript, REST API, JSON, SOAP, Git, Maven, Elastic Stack, Infrastructure as Code, CI/CD, GitHub Actions, Linux

Nice to have: GCP, SonarQube