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- Tasks: Lead the transformation of legacy systems into modern microservices using Java and Spring Boot.
- Company: Join Datalex, a market leader in digital commerce for travel retail.
- Benefits: Enjoy a hybrid work model, competitive salary, and a vibrant company culture.
- Why this job: Make a real impact on airline retail technology and shape the future of travel.
- Qualifications: 7+ years in Java development with strong expertise in microservices and REST APIs.
- Other info: Be part of a certified 'Great Place to Work' with excellent career growth opportunities.
The predicted salary is between 42000 - 84000 £ per year.
Overview
Datalex is a market leader in digital commerce for travel retail. The Datalex Digital Commerce Platform provides airlines with a unique solution to drive revenue and profit as digital retailers. Today the platform enables a travel marketplace of over one billion shoppers covering every corner of the globe, driven by some of the world’s most innovative airline retail brands. Datalex’s customers include Air China, JetBlue Airways, Hainan Group, SAS, Philippine Airlines, Aer Lingus, Brussels Airlines, Air Transat, Air Malta, STA Travel and Trailfinders. The Group is headquartered in Dublin, Ireland, and maintains offices across Europe, the USA and China. Datalex plc is a publicly listed company on Euronext Dublin (DLE).
We are always interested in hearing from talented individuals, review our open positions and apply to those that match your qualifications.
Location & Reporting
Location: Dublin or Manchester (Hybrid)
Reports to: Engineering Manager
About the Role
We are seeking a highly skilled Senior Java Developer to lead the modernization of our legacy monolithic architecture by decomposing SOAP-based services into stateless RESTful microservices. You will be responsible for transitioning our legacy SOAP-based services to RESTful, scalable microservices using Spring Boot, deployed in AWS via Docker and Kubernetes (or ECS). This is a high-impact role where your expertise will directly influence system scalability, performance, and developer experience.
Key Responsibilities
- Apply domain-driven design and stateless principles to migrate business functionality from the monolith to a modern architecture
- Lead the decomposition of tightly coupled SOAP services into independently deployable microservices
- Design and implement scalable, stateless REST APIs using Spring Boot and SwaggerHub
- Lead the transformation from SOAP/XML to REST/JSON for internal and external APIs
- Serve as the front controller for managing requests and orchestrating backend service flows
- Develop and deploy containerized microservices using Docker and Kubernetes, or AWS ECS
- Implement cloud-native architecture patterns for high availability, fault tolerance, and scalability in AWS
- Integrate with API Gateway, Lambda, and CloudFormation or other IaC tools for provisioning infrastructure
- Testing & Quality: Write comprehensive integration, unit, and API tests using JUnit, Mockito, Postman, etc.
- Debug REST-to-SOAP interactions to ensure seamless migration and data integrity
- Champion CI/CD and test automation practices across the team
- Performance, Caching & DevOps: Optimize performance with caching solutions (e.g., Redis, Memcached)
- Maintain stateless service architecture principles
- Contribute to observability with Prometheus, Grafana, and ELK Stack
- Collaborate closely with product, QA, DevOps, and platform teams
- Mentor junior engineers and support technical decision-making across sprints
- Advocate for engineering excellence, TDD, and best practices in software delivery
Required Skills & Experience
- Experience leading end-to-end migration projects from SOAP-based systems to scalable, domain-aligned microservices
- Proven experience decomposing monolithic applications and rebuilding them as RESTful microservices
- 7+ years in Java development with strong expertise in Spring Boot
- Strong knowledge of REST architecture principles and best practices
- Proven experience designing and building REST APIs at scale
- Deep understanding of SOAP-to-REST transformations
- Hands-on with Docker and either Kubernetes or AWS ECS (Elastic Container Service)
- Proficiency in one or more Infrastructure as Code (IaC) frameworks: Terraform, AWS CloudFormation, or AWS CDK
- Proficient with CI/CD tools (e.g., Jenkins, GitLab CI, AWS CodePipeline)
- Strong testing discipline with tools like JUnit, Mockito, Postman, or Karate
- Experience with OAuth2, JWT, OpenID Connect
- Familiarity with Java 8+ and awareness of Java 11/17 improvements
Preferred Skills
- Experience with API Gateways (AWS API Gateway, Kong)
- Knowledge of Kafka, RabbitMQ
- Experience with serverless architectures (e.g., AWS Lambda)
- Broader experience with Infrastructure as Code tooling and best practices
About Datalex
Datalex\’s purpose is to transform airline retail. Datalex is a market leader in airline retail technology, offering unique products that enable airlines to drive revenue and profit as digital retailers. Datalex has a strong track record of delivering digital retail transformation for progressive airline brands worldwide, including Aer Lingus, easyJet, JetBlue Airways, Air China, Edelweiss, Air Transat, and Air Macau. The Group is headquartered in Dublin, Ireland, and maintains offices across Europe, the USA and China. In 2024, Datalex was awarded the \’Great Place to Work and \’Best Workplaces in Tech\’ certifications. Datalex plc is a publicly listed company, on Euronext Growth, Dublin. Learn more at www.datalex.com or follow on LinkedIn @Datalex.
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Senior Java Developer (Manchester) employer: Datalex
Contact Detail:
Datalex Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Java Developer (Manchester)
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with online communities. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving Java, Spring Boot, and microservices. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence is key, so be ready to discuss your past experiences and how they relate to the role.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love hearing from passionate candidates who are eager to join our team at Datalex.
We think you need these skills to ace Senior Java Developer (Manchester)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Java Developer role. Highlight your experience with Java, Spring Boot, and any relevant projects that showcase your skills in migrating from SOAP to RESTful microservices.
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about the role and how your background aligns with Datalex's mission. Don’t forget to mention your experience with cloud-native architectures and CI/CD practices.
Showcase Your Technical Skills: Be specific about your technical skills in your application. Mention your hands-on experience with Docker, Kubernetes, and any IaC tools you've used. This will help us see how you can contribute to our team right away!
Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of your application and ensures you’re considered for the role. Plus, it’s super easy!
How to prepare for a job interview at Datalex
✨Know Your Java Inside Out
Make sure you brush up on your Java skills, especially with Spring Boot. Be ready to discuss your experience with RESTful APIs and how you've tackled SOAP-to-REST transformations in past projects.
✨Showcase Your Migration Experience
Prepare specific examples of end-to-end migration projects you've led. Highlight the challenges you faced while decomposing monolithic applications and how you overcame them, as this will demonstrate your problem-solving skills.
✨Familiarise Yourself with Cloud Technologies
Since the role involves AWS, Docker, and Kubernetes, make sure you can talk about your hands-on experience with these technologies. Be ready to discuss how you've implemented cloud-native architecture patterns for scalability and fault tolerance.
✨Emphasise Testing and CI/CD Practices
Datalex values a strong testing discipline, so be prepared to discuss your experience with tools like JUnit and Mockito. Share how you've championed CI/CD practices in your previous roles to ensure high-quality software delivery.
