Full Stack Developer (Java / JavaScript)

About the position

Full Stack Developer (Java / JavaScript) with solid commercial experience to join an international team working for a customer. The role contributes to end-to-end product development, turning agreed requirements into tested, maintainable functionality across the front end and back end.

You will collaborate with senior engineers and stakeholders to refine requirements and deliver iteratively, working within an established technical direction and a collaborative delivery team.

Requirements

• Technologies: Java, JavaScript
• Solid commercial experience in full-stack development, including web applications, APIs, data persistence, testing, and version-control workflows
• Experience with Agile/Scrum methodologies
• Fluency in English
• Familiarity with Jira
• Great attention to detail
• Excellent verbal communication skills
• Proactive, dependable, and comfortable working in a collaborative team
• Independence and drive to grow and learn

Responsibilities

• Implement application features and integrations under established technical direction
• Write clear, maintainable code supported by automated tests and peer review
• Investigate defects and contribute to performance, reliability, and security improvements
• Collaborate with senior engineers and stakeholders to refine requirements and deliver iteratively
• Application testing and maintenance
• Application deployment

What we offer

• Contract under Polish law: B2B or Umowa o Pracę
• Benefits such as private medical care, group insurance, and Multisport card
• English classes
• Hybrid work in Warsaw: 1 day for a few weeks on-site
• Opportunity to work with excellent professionals
• High standards of work and focus on code quality
• New technologies in use
• Continuous learning and growth
• International team
• Pinball, PlayStation, and more on-site

Application statement

Please include the following statement:

I hereby authorize Webellian Poland Sp. z o.o. to process personal data provided in this document for realising the recruitment process pursuant to the Personal Data Protection Act of 10 May 2018 (Journal of Laws 2018, item 1000) and in agreement with Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation).