Senior Back-End Engineer (Java)

About the role

We are seeking a Senior Back-End Engineer with deep Java expertise to join a technology‑driven team in Ireland. You will design, build, and optimise robust, scalable, and secure backend services that power critical workforce and administrative platforms.

Key responsibilities

• Design, develop and maintain high‑performance Java backend applications using modern engineering practices.
• Build secure, reliable services that support business‑critical workflows.
• Collaborate with cross‑functional teams to translate requirements into technical solutions.
• Optimize performance, scalability and reliability while adhering to coding standards.
• Participate in architecture discussions and continuously improve backend systems.
• Develop, test and deploy new features while ensuring system stability.
• Troubleshoot and resolve complex technical issues across environments.
• Contribute to code reviews, documentation and knowledge sharing.

Required profile

• Proven experience as a senior backend engineer or Java developer.
• Strong analytical and problem‑solving abilities.
• Excellent communication and collaboration skills in multicultural, distributed teams.
• Ability to work independently and manage priorities.

Required skills

• Java
• Object‑oriented programming
• Backend architecture and distributed systems
• Scalable application design
• Database design and data modelling
• Performance optimisation techniques
• RESTful APIs and system integration
• Secure application development practices
• Modern software development methodologies
• Testing frameworks
• Version control systems (e.g., Git)