Senior Java Engineer

Cartrawler; Dublin; Hybrid; EUR 40,000 - 60,000; Full time

Job summary

A leading B2B technology provider in Dublin is seeking a Senior Java Engineer to develop APIs and mentor junior engineers. The role includes working on a core platform, implementing best practices, and participating in technical design discussions. Candidates should have over 6 years of experience with Java and REST API development. This position offers a hybrid working model, competitive pay, extensive benefits, and a supportive work culture that values personal wellbeing and flexible working options.

Benefits

Competitive pay and performance-based bonus

Fully subsidised health insurance

25 days annual leave and flexible working

Wellbeing support and various leave options

Subsidised canteen and cycling schemes

Qualifications

• 6+ years development experience on Java 17.
• Deep understanding of object-oriented design and programming concepts.
• Experience of development and consumption of scalable REST APIs.

Responsibilities

• Work within a full-stack team across all business services.
• Develop supporting APIs for consumer-facing applications.
• Mentor Junior and Mid-Level engineers.

Skills

Java 17

Object-oriented design concepts

REST API development

Spring framework

SQL data management

CI/CD Pipelines

AWS services

Tools

Maven

Jenkins

Hibernate

JPA

Job description

From our roots in Ireland, CarTrawler has grown into the leading B2B technology provider of car rental and mobility solutions to the global travel industry. If you’ve ever booked a flight and seen the option to rent a car, that was probably us; but it’s our people that make everything we do possible – and we’re growing!

At CarTrawler, you’ll find more than just a job. You’ll find flexibility, meaningful impact, and a culture built by the people who live it every day. Our culture is built on high performance, genuine connection, and a shared commitment to making an impact, without sacrificing personal wellbeing. With flexible working models, meaningful time off, and dedicated growth opportunities, we enable people to do great work and feel good doing it.

We have a hybrid working policy with two mandatory days a week in our Dublin office, you have the freedom to design a routine that supports your productivity and personal life. The office offers ample car parking, a heavily subsidized (KC Peaches) canteen, convenient proximity to the Luas, and access to EV charging stations.

Role Purpose

The Senior Java Engineering role is a multi-faceted role. You will work within a full-stack team across all of the business services of our core platform while playing an active role in developing new services that deliver successful business outcomes. Develop supporting API’s across all consumer-facing applications for your frontend peers. Be a key contributor in building out our supply network by developing externally facing 3rd party API connectors for onboarding new supply content into the platform. Manage integrations into airline- specific API suites for Single Sign On, redemption of air miles etc.

The Senior Java Engineer is expected to demonstrate a high degree of initiative in terms of design and implementation decisions, while collaborating with Architects and fellow Senior Engineers to review and ensure best practices are implemented – particularly in respect of new and novel technology initiatives. You will also be expected to provide mentoring and direction to Junior and Mid-Level engineers, contributing to code reviews and design reviews with the goal of ensuring quality and maintainability of the overall codebase.

• Participate in and drive technical design discussions, validating strategies with Architects, Senior Engineers and the Engineering Manager to ensure adherence to best practices and recognised design patterns — always striving for simplicity and clarity.
• Implement efficient, high-performing solutions — avoiding unnecessary complexity while optimising compute- or I/O-intensive components where appropriate.
• Ensuring that knowledge gained is always shared outwards to the teams and the company as a whole.
• Ensuring the project is delivered to high standards of quality in all aspects including, but not limited to code, documentation, configuration management, source code control and best practice challenges of the role.
• Coping with multiple, sometimes overlapping work streams.
• Clearly communicating scope and risks to both the project management functions and the engineering functions.

Critical Interfaces

• Fellow Java Engineers
• Front-end Engineers whose code interfaces with your solutions
• Quality Assurance Engineers
• Product and Engineering Management
• Other squads within CarTrawler’s Product & Technology division
• Business Teams within CarTrawler

Skills & Experience Required

• 6+ years development experience on Java 17.
• Deep understanding of object-oriented design and programming concepts and experience applying recognised design patterns.
• Experience of development and consumption of scalable REST APIs and REST API architecture.
• Working knowledge of frameworks such as Spring, Hibernate, JPA. Particularly in terms of the design and development practices they represent (Inversion of control, Modularity, Composition, etc)
• 2+ years experience with Spring/boot.
• Comfortable with maven, and version control.
• Awareness of emerging technologies and methodologies, recognising when there are efficiencies to be gained or competitive advantages in adopting or investigating new technologies.
• Experienced developing scalable, highly-available Java Enterprise applications in a fast-moving agile environment.
• Strong SQL data management skills. NoSQL experience a bonus.
• Detailed experience using CI/CD Pipelines with Git and Jenkins; in a multi development environment.
• Exposure to AWS services (SQS, Kinesis, ElastiCache).
• Experience with vendor management / integrating with 3rd party platforms.

We know that looking for a new job can feel a bit daunting but don’t let a touch of imposter syndrome hold you back. Even if you don’t tick every box, we’d still love to hear from you! Apply today to stay connected.

At CarTrawler, we’re proud to be an equal opportunities employer. We celebrate diversity and are committed to creating an inclusive environment for everyone. No matter your background, identity, or life experience, if you’re passionate about what you do, you’ll be welcomed here.

Perks for the journey

· Competitive pay and benefits, including a performance-based annual bonus, fully subsidised VHI health insurance and pension matching up to 4%.

· Generous time off and flexible working, including 25 days’ annual leave, extra company days, monthly Friday Unplugged afternoons and the option to work abroad for up to 20 days a year.

· Comprehensive wellbeing support, including access to health and mental health programmes (HeadsUp and EAP) and paid leave for marriage, volunteering and personal wellbeing including menstrual, menopause, and fertility leave.

· Growth and recognition culture with development opportunities through training, coaching and study support plus programmes that celebrate individual and team achievements.

· Everyday perks that make a difference - subsidised canteen (KC Peaches), on-site car parking, Bike to Work and TaxSaver schemes plus an active Sports & Social Club.

Classon House
Dundrum Business Park
Dundrum
Dublin 14
Ireland

New York Office

14 th Floor
575 5 th Avenue
New York
NY 10017
United States

London Office

3 Waterhouse Square
138 – 142 Holborn
London
EC2N 2SW
United Kingdom