Senior Full Stack Java/React Developer – Platform Solutions

Unleash scalable solutions — build the future of collaborative platforms!

Kraków-based opportunity with hybrid work model.

As a Senior Full Stack Developer, you will be working for our client, a leader in innovative platform solutions for collaboration and data management. You will contribute to the design, development, and maintenance of the cutting-edge CollaborationHub platform, including LakeHouse and WorkSync solutions, empowering teams to connect and innovate seamlessly.

Your main responsibilities:

• Contribute to the platform’s solution design and technical strategy.
• Develop and maintain backend services and Web APIs in Java.
• Build dynamic frontend features using JavaScript frameworks (React), HTML, and CSS.
• Design and optimize PostgreSQL databases, including data models and SQL queries.
• Integrate services, APIs, and data flows across the platform.
• Write, execute, and maintain tests; participate in QA, defect investigation, and release validation.
• Collaborate with cross-functional teams to ensure high-quality delivery and continuous improvement.

You're ideal for this role if you have:

• At least 5 years of professional experience in full stack development.
• Strong proficiency in Java, SQL (PostgreSQL), and database design.
• Extensive experience with JavaScript, React, HTML, and CSS.
• Hands-on experience with ETL/ELT pipelines.
• Solid understanding of SDLC and version control tools (Git).
• Strong problem-solving skills and meticulous attention to detail.
• Good interpersonal communication skills.
• English language proficiency at B2+ level.

It is a strong plus if you have:

• Prior experience in cloud environments or related certifications.
• Familiarity with Agile methodologies and Scrum.

Language required for the role:

• English (Communicative level).

Eligibility to work on this role:

• Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

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.