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Java Developer (Freelance) at Netguru. We are looking for a . Mid-level Java Developer.  to join our client’s engineering team and support the development of a SaaS platform used by enterprise customers. This role requires working in close collaboration with both Netguru and our client’s teams, acting as a fully integrated contributor within the client's software organization.. This is a . B2B contract.  position.. Hourly rate: up to 32 EUR/h.  (net, invoiced).. Working hours: . 14:30 to 22:30 CET.  (±30 minutes).. Responsibilities. . Perform development work as part of the client’s software engineering teams. . Support the client’s developers in daily tasks and project work. . Provide assistance to the client’s customers during US working hours. . Monitor and resolve critical issues that arise outside of standard European hours. . Participate in regular team meetings and virtual team events. . Integrate with the client’s wider developer community. . Contribute to the ongoing development of the client’s SaaS solution, including:. . . Integrating with customer ERP systems to retrieve data. . Analyzing data and delivering insights back to customers. . Building and maintaining features within the SaaS application. . . . 2–4 years of experience in backend development with Java. . Solid understanding of object-oriented programming and Java fundamentals. . Experience with Spring Boot and RESTful API design. . Familiarity with SQL and working with relational databases. . Comfortable working independently during off-standard hours. . Ability to communicate clearly and collaborate in distributed, international teams. . Professional working proficiency in English (spoken and written). . Nice to Have. . Experience with ERP system integration. . Exposure to SaaS product development. . Familiarity with CI/CD pipelines and containerized environments. . Knowledge of AWS or other cloud platforms. . Prior experience working in customer-facing support or issue resolution. . Company Location: Poland.