Senior Java/React Full-Stack Developer

Shape the future of WorkSync — build seamless, scalable solutions across the full technology stack!

Krakow-based opportunity with a hybrid work model: 3 days remote and approximately 6 days per month in the office.

As a Senior Java/React Full-Stack Developer, you will be working for our client on the development and evolution of the WorkSync solution. You will contribute to its technical direction while building reliable frontend and backend features, integrating services and APIs, and supporting high-quality releases in a collaborative international environment.

Your main responsibilities:

• Contribute to the WorkSync solution design and technical direction.
• Build and maintain frontend and backend features.
• Develop and integrate services and APIs.
• Write and execute appropriate software tests.
• Participate in quality assurance activities and defect investigations.
• Support release validation and continuous delivery of new features.
• Collaborate effectively with teams across the project.

You're ideal for this role if you have:

• At least 5 years of professional experience in full-stack software development or a similar role.
• Strong frontend and backend development experience.
• Proficiency in Java, Web API, JavaScript, React or another JavaScript framework, HTML, and CSS.
• Experience with SQL and databases.
• Knowledge of software testing and QA support activities.
• Experience with the software development life cycle and Git.
• Strong problem-solving skills, attention to detail, and effective interpersonal skills.

It is a strong plus if you have:

• Experience with PostgreSQL.
• ETL/ELT experience.
• Knowledge of Node.js or Groovy.
• Experience with automated testing.

Language Required for the role: Communicative English, at least B2 level.

Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role.

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Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.