Senior Java Developer (CDD 12 months)

Ingenico is the global leader in payments acceptance solutions. As the trusted technology partner for merchants, banks, acquirers, ISVs, payment aggregators and fintech customers our world-class terminals, solutions and services enable the global ecosystem of payments acceptance. With 40 years of experience, innovation is integral to Ingenico’s approach and culture, inspiring our large and diverse community of experts who anticipate and help shape the evolution of commerce worldwide. At Ingenico, trust and sustainability are at the heart of everything we do.

About the Role

As part of a replacement, we are looking for an experienced Software Development Engineer to support the maintenance, evolution, and industrialization of our Java server applications and their associated technical ecosystem.

This role requires strong expertise in Java development, build management, CI/CD processes, Linux environments, and application packaging. The successful candidate will be able to work autonomously on critical technical topics while contributing to the continuous improvement of development and deployment practices.

Key Responsibilities

Software Design & Development

• Analyze business and technical requirements and translate them into detailed technical specifications.
• Develop, maintain, and enhance Java-based server applications.
• Design scalable, maintainable, and high-performance software solutions.
• Apply object-oriented programming principles and software design patterns.

Code Quality & Best Practices

• Perform testing, debugging, and issue resolution.
• Ensure code quality, maintainability, performance, and reliability.
• Participate in code reviews and promote development best practices.
• Contribute to the definition and enforcement of development standards.

Build, CI/CD & Automation

• Maintain and enhance Maven build systems.
• Manage dependencies, plugins, and build configurations.
• Ensure build reproducibility and reliability.
• Maintain and improve Jenkins CI/CD pipelines.
• Support and optimize continuous integration and deployment processes.

Infrastructure & Environment Management

• Maintain and support Linux and WSL2 environments.
• Manage containerized environments using Docker and Docker Compose.
• Support development environments, including VS Code and Dev Containers.
• Contribute to future infrastructure evolution, including Kubernetes adoption.

Packaging & Deployment

• Develop and maintain Bash installation and deployment scripts.
• Manage Linux-based appliance environments, ideally Red Hat.
• Integrate security requirements and best practices, including SELinux.

Technical Support & Continuous Improvement

• Investigate and resolve complex technical issues.
• Produce and maintain technical documentation.
• Share knowledge and provide support to internal teams when needed.
• Contribute to ongoing improvements of tools, processes, and technical practices.
• Conduct technical feasibility studies and technology assessments.

Collaboration

• Work closely with cross-functional teams, including Architecture, Security, Operations, and Support.
• Share technical expertise and contribute to mentoring activities.

Required Qualifications

• Master's degree (or equivalent) in Computer Science, Software Engineering, or a related field
• Minimum 5 years of experience in software development.
• Proven experience in Java backend development within complex technical environments.
• Hands-on experience with software industrialization and CI/CD practices.
• Advanced knowledge of Maven.
• Strong experience with Java (Java 8 to Java 25).
• Good knowledge of Linux administration and troubleshooting.
• Experience with Jenkins, Docker administration and usage, Intermediate Bash scripting skills, PostgreSQL 16+.

Nice to Have

• Kubernetes, SELinux, PKI (Public Key Infrastructure), HSM (Hardware Security Modules).

Soft Skills

• Strong problem-solving and analytical skills.
• Ability to work autonomously on critical technical topics.
• Excellent communication and collaboration skills.
• Continuous improvement mindset.
• Ability to work effectively in a multidisciplinary and international environment.

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