Senior Software Engineer (Java)

CarTrawler; Leinster; On-site; EUR 90,000 - 120,000; Full time

Job summary

CarTrawler is seeking a Senior Software Engineer (Java) to design, build and evolve scalable Java services and RESTful APIs powering our core travel platform and customer experiences. You will lead technical design discussions with Architects, Product Managers and Engineering Managers, delivering simple, scalable and maintainable solutions while championing engineering excellence.

Mentor engineers through coaching and knowledge sharing, investigate production issues and pursue opportunities to

Qualifications

• 6+ years of enterprise Java experience (Java 17+) with Spring Boot and Hibernate.
• Strong object-oriented design and knowledge of distributed backend systems.
• Experience designing RESTful APIs and integrating with external services.
• Solid SQL, relational databases, Git, Maven and modern CI/CD in Agile environments.
• Collaborative mindset with ability to influence technical decisions and mentor others.
• Curiosity for AI-assisted tooling with secure, high-quality software.

Responsibilities

• Design, build and evolve scalable Java services and RESTful APIs.
• Lead technical design discussions with Architects, PMs and Engineering Managers to deliver scalable and maintainable solutions.
• Build resilient integrations with payment providers, travel partners and third-party technologies.
• Champion engineering excellence through code reviews, testing, observability, CI/CD and best practices.
• Mentor and support engineers through coaching and knowledge sharing.
• Investigate and resolve production issues, improving performance, reliability and scalability, while embracing AI-assisted development responsibly.

Skills

Java

Spring Boot

RESTful APIs

Distributed systems

SQL

Git/Maven

CI/CD

Mentoring

Architectural design

AI-assisted development

Tools

Hibernate

JPA

Git

Maven

CI/CD pipelines

Job description

What you'll do as a Senior Software Engineer (Java)

• Design, build and evolve scalable, high-quality Java services and RESTful APIs that power our core travel platform and customer experiences.
• Lead technical design discussions, collaborating with Architects, Product Managers and Engineering Managers to deliver simple, scalable and maintainable solutions.
• Build resilient integrations with payment providers, travel partners, data platforms and third-party technologies that expand our platform capabilities.
• Champion engineering excellence through code reviews, testing, observability, CI/CD and operational best practices while promoting continuous improvement.
• Mentor and support engineers through coaching, pairing and knowledge sharing, helping to grow technical capability across the team.
• Investigate and resolve complex production issues, identifying opportunities to improve system performance, reliability and scalability while embracing AI-assisted development responsibly.

What you'll bring to the team

• Extensive experience (6+ years) developing enterprise applications with Java (Java 17+ preferred), alongside Spring Boot, Hibernate and JPA.
• Strong understanding of software architecture, object-oriented design principles and building scalable, distributed backend systems.
• Proven experience designing and delivering RESTful APIs and integrating with third-party services using resilient integration patterns.
• Solid knowledge of SQL, relational databases, Git, Maven and modern CI/CD practices within Agile software development environments.
• A collaborative mindset with the ability to influence technical decisions, communicate effectively with cross-functional stakeholders and mentor fellow engineers.
• Curiosity for emerging technologies, including AI-assisted engineering tools, with a pragmatic approach to delivering secure, high-quality software that creates business value.