J2EE

My Java-based desktop application currently throws errors whenever a user tries to import an Excel file, and the files it exports need a small formatting tweak before they are usable. The rest of the program... (Budget: €30 - €250 EUR, Jobs: Agile Development, Desktop Application, Excel, J2EE, Java, JavaScript, Software Architecture, Software Development)

I’m building a new mobile application and I need a robust Java Spring Boot backend to power it. The core services you’ll create must cover: • User authentication and management with full multi-factor authentication (MFA) and support for future multi-party authentication flows... (Budget: ₹400 - ₹750 INR, Jobs: Hibernate, J2EE, Java, MySQL, PostgreSQL, REST API, RESTful API, Software Architecture, Spring Boot, Spring Security)

deploying the official open-source backend components and integrating them with various third-party services for full functionality. • mainly our requirements our own infrastructure Self-Hosted with Custom Instance public rebranded messaging app... (Budget: ₹1500 - ₹12500 INR, Jobs: Database Administration, J2EE, Java, Linux, Node.js, PostgreSQL, Redis, System Admin)

Busco desarrollar el backend de un sistema empresarial centrado en el seguimiento de procesos, específicamente el seguimiento de tareas diarias. Qué necesito: • Arquitectura robusta con API REST bien documentada... (Budget: $30 - $250 USD, Jobs: Amazon Web Services, API Development, Backend Development, J2EE, Java, Java Spring, Node.js, RESTful)

I am rolling out a full CI/CD pipeline on AWS and want it driven by Spinnaker. The work starts with connecting Spinnaker to our existing Git repos, packaging a Java-based service, and automating its promotion through our Eaac environments via Jule... (Budget: $250 - $750 USD, Jobs: Amazon Web Services, AWS Lambda, CI/CD, Docker, Git, J2EE, Java, Java Spring, Jenkins, Linux)

We are looking for a reliable and experienced Java developer to provide daily job support (2 hours per day) for a legacy Java Servlet–based application, along with SQL and AWS-related work. This role involves live guidance, debugging, and issue resolution in an active production environment... (Budget: ₹12500 - ₹37500 INR, Jobs: Debugging, Git, J2EE, Java, Java Spring, JSP, MySQL, Performance Tuning, SQL)