Medium/Senior Software Engineer (Java) - Full-time

Mellon Group is a leading Greek multinational organization providing specialized fintech and customer experience solutions to major financial institutions and large enterprises. Headquartered in Athens, Greece, the Group employs over 9,000 professionals across 14 countries. It delivers innovative technological solutions and value-added services to organizations with high consumer transaction volumes, including retail banks, telecommunications providers, public utilities, and large private companies.

We are currently seeking a Medium/Senior Software Engineer (Java) to join one of the Group’s subsidiaries.

We’re looking for an experienced Java engineer to build scalable, high-quality systems and contribute to modern, impactful projects.

Responsibilities

• Design, develop, and maintain Java-based applications
• Work with Spring (Boot, Security, Data) and Hibernate/JPA
• Collaborate with cross-functional teams to deliver reliable solutions
• Mentor junior developers and promote engineering best practices
• Improve system performance, architecture, and code quality

Requirements

• 3+ years of software development experience
• Strong knowledge of Java, OOP, and Git
• Experience with REST APIs, SQL, and relational databases
• Familiarity with CI/CD pipelines and Agile methodologies

Nice to Have

• Exposure to .NET, React, or cloud/microservices architectures
• Experience with Docker, Kubernetes, or contact center platforms (e.g. Genesys)
• Background in regulated industries (banking, telecom, healthcare)

Benefits

• Modern, collaborative work environment
• Continuous learning and career growth opportunities
• Competitive salary, benefits, and flexible working options
  

If you’re passionate about building robust software with real business impact, apply now.

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