Senior Java Backend Engineer - Hybrid & Global Impact

Siemens; Lisboa; Hybrid; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Belong & Innovate

Flexibility that Works

Health & Well-being

Grow Without Limits

Purpose & Perks

Job summary

Siemens Portugal Tech Hub seeks an experienced Java Developer to solve challenging technical problems, understand complex applications, and turn existing solutions into more maintainable, reliable, and secure software. You will join an international project environment where you can take ownership, improve applications, tackle technical debt, and influence future evolution.

You will develop, maintain, and improve business-critical software, collaborate with engineers and stakeholders, and ensure

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, IT, Engineering, or equivalent professional experience.
• 4+ years of professional Java development experience with backend focus.
• Strong knowledge of Java EE / J2EE applications and architectures.
• Experience maintaining and refactoring legacy applications.
• Strong knowledge of WebLogic and JBoss, including configuration, troubleshooting, and optimization.
• Solid SQL and PL/SQL skills, particularly with Oracle and PostgreSQL.
• Good understanding of TCP/IP communication and system integration.
• Experience with SVN, Ant, Eclipse, and MagicDraw.
• Basic Windows administration and troubleshooting knowledge.
• English is mandatory in an international project environment.

Responsibilities

• Develop, maintain, and continuously improve business-critical software solutions.
• Understand existing applications, challenge the status quo, and identify modernization opportunities.
• Refactor legacy components while preserving stability and business continuity.
• Investigate complex issues, identify root causes, and implement sustainable solutions.
• Ensure high standards for software quality, maintainability, security, and documentation.
• Support integration, deployment, and operational readiness across the lifecycle.
• Translate business needs into effective software solutions.
• Collaborate with developers, testers, architects, and stakeholders across an international environment.
• Take ownership and proactively communicate progress, dependencies, and risks.

Skills

Java development

Java EE / J2EE

WebLogic

JBoss

SQL & PL/SQL

TCP/IP

SVN, Ant, Eclipse, MagicDraw

Windows administration

MES experience (plus)

English mandatory

Education

Bachelor's degree in Computer Science or related field

Tools

Oracle Database

PostgreSQL

Job description

Siemens Portugal Tech Hub seeks an experienced Java Developer to solve challenging technical problems, understand complex applications, and turn existing solutions into more maintainable, reliable, and secure software. You will join an international project environment where you can take ownership, improve applications, tackle technical debt, and influence future evolution.

You will develop, maintain, and improve business-critical software, collaborate with engineers and stakeholders, and ensure