About us:
Amach is an industry-leading technology driven company with headquarters located in Dublin and remote teams in UK and Europe.
Our blended teams of local and nearshore talent are optimised to deliver high quality and collaborative solutions.
Established in 2013, we specialise in cloud migration and development, digital transformation including agile software development, DevOps, automation, data and machine learning…
We are looking for a Principal Engineer with deep expertise in Java, Oracle and distributed systems to lead the modernisation of our customer's enterprise architecture. In this role, you’ll drive the strategic transformation of a legacy monolithic system into a scalable, cloud-native platform. You will provide technical management, define engineering standards and design enterprise-grade microservices leveraging Spring Boot, REST APIs and Oracle, deployed in AWS using Docker and Kubernetes.
This is a hands-on architecture and management position where you’ll shape system design decisions, mentor engineering teams and set the direction for high-performance, secure and reliable software delivery.
This role will operate on a hybrid model, with candidates expected to be able and willing to work from our customer's Dublin office at least once a week.
Required Experience:
- 10+ years of professional software engineering experience, with at least 3 years in a senior or principal capacity
- Expert-level proficiency in Java (Java 11/17) and Spring Boot for microservice development
- Proven experience in Oracle database design, optimisation, and integration within distributed systems
- Robust track record modernising monolithic or SOAP-based systems into RESTful microservices
- Deep knowledge of microservice architecture, domain-driven design (DDD), and event-driven systems
- Hands-on experience with AWS (ECS, EKS, Lambda, API Gateway) and Docker/Kubernetes
- Proficiency with CI/CD tools (Jenkins, GitLab CI, AWS CodePipeline) and IaC (Terraform, CloudFormation)
- Solid comprehension of authentication and authorisation frameworks (OAuth2, JWT, OpenID Connect)
- Solid understanding of observability stacks (Prometheus, Grafana, ELK)
Key responsibilities & duties include:
Architecture & Technical Leadership- Define and implement the architectural roadmap for decomposing legacy systems into modular, domain-driven microservices
- Lead the modernization of SOAP-based applications to RESTful, stateless microservices built with Spring Boot and integrated with Oracle databases
- Establish and enforce engineering standards for scalability, security, observability, and cloud readiness
- Partner with stakeholders across Product, Platform, and DevOps to ensure architectural alignment with business goals
- Design, build, and optimize RESTful APIs following best practices and OpenAPI/Swagger standards
- Lead transformation from SOAP/XML to REST/JSON for internal and external integrations
- Ensure performance, fault tolerance, and high availability across service layers
- Act as a subject matter expert for Java-based microservices and Oracle data integration patterns
- Architect and deploy containerised services using Docker, Kubernetes, and AWS ECS
- Implement Infrastructure as Code (IaC) with Terraform or AWS CloudFormation for repeatable, secure provisioning
- Collaborate with DevOps to improve CI/CD pipelines, observability and release automation
- Drive adoption of cloud-native best practices for endurance and cost efficiency
Quality, Performance & Security
- Define and implement performance benchmarks, monitoring and tuning strategies
- Promote TDD, CI/CD, and automated testing frameworks (JUnit, Mockito, Postman)
- Implement caching strategies (Redis, Memcached) and optimise database interactions
- Ensure compliance with security standards and data protection policies
- Provide hands-on mentorship to senior and mid-level engineers
- Lead design and code reviews, promoting technical excellence and knowledge sharing
- Champion modern engineering practices, agile methodologies, and continuous improvement
- Collaborate with senior management to influence technical direction and long-term technology strategy
Desirable Experience:
- Experience designing or integrating API Gateways (AWS API Gateway, Kong, Apigee)
- Exposure to message brokers (Kafka, RabbitMQ) or event-driven architectures
- Experience with serverless components (AWS Lambda) and data streaming pipelines
- Robust collaboration and communication skills, capable of influencing technical direction across teams
What’s in it for you:
- An opportunity to join a fast-growing company
- Options for career advancement
- Learning and development opportunities
- Flexible working environment
- Competitive salaries based on experience
Equal Opportunity Employer:
Amach is an equal opportunity employer and makes employment decisions on the basis of merit. We celebrate diversity and are committed to creating an inclusive environment for all employees. This job description is intended to convey essential responsibilities and qualifications for this role, but it is not an exhaustive list of tasks that an employee may be required to perform.
If you are passionate about driving customer success, advising on strategic solutions, and contributing to product innovation, we would love to hear from you!
Not for you?
Check out all of our open positions in our careers page and follow us on LinkedIn for future opportunities.
P.S. Share this with friends and co-workers! Don't be afraid they'll steal it from you, if you're amazing and smart we'll find a role for you. We are growing fast and we are always looking for talented people.
At Amach, we strive to be an inclusive community of open-minded individuals with different backgrounds and we are committed to fostering, cultivating and preserving a culture of diversity, equity and inclusion. We strongly believe that a diversity of experience and background is essential to create a fulfilling environment and better solutions for our people and our customers. All Amach employees and contractors are expected to honour this policy and act to ensure that every individual is respected in the workplace.
Your personal data
Amach will process your personal information in accordance with the EU's General Data Protection Regulation (GDPR). We will comply with data protection law and principles, which means that your data will be:
- Used lawfully, fairly and in a transparent way
- Collected only for valid purposes and not used in any way that is incompatible with those purposes
- Relevant to the purposes we have told you about and limited only to those purposes
- Accurate and kept up to date
- Kept only as long as necessary for the purposes we have told you about
- Kept securely
If you would like to contact us about your data, please use the following address: [email protected]
Top Skills
What We Do
We help mature organisations evolve into modern digital businesses with faster time to market, increased operational stability and security.
We offer a suite of technical services delivered by an experienced team of subject matter experts. Our services can be provided as a fully managed service or as an embedded part of your team. We focus on both short-term and long-term goals that emphasise business outcomes for our customers.
Why choose Amach:
1. Business Agility - We focus on removing your IT debt, so that your company can focus on delivering business value to your customers at pace in a secure and reliable manner.
2. Cost Reduction - We help reduce your IT costs across all domains. This includes operational costs in both cloud and your data centres, licencing, evergreening, and reducing project delivery timelines.
3. Operational Stability - We will modernise your IT systems ensuring operational stability and resilience, to ensure the end user experience for both customers and staff are enhanced.
4. Enable Innovation - By removing IT debt, we create space for your team to focus on innovation, ensuring business longevity and futureproofing. We bring both sector experience and lessons learned.
5. Security - We address the overall architecture to ensure security by convention vs configuration. We promote DevSecOps practices, so security isn’t seen to prevent teams from delivery in an efficient manner.
6. Improve Employee Experience - We create and implement your EUX strategy that adapts to a changing world, while improving security and user efficiency - resulting in improved colleague satisfaction and retention.
7. Sustainability - Achieve your sustainability goals through optimising your overall IT footprint and reducing costs.
We thrive on delivering customer value in every interaction.
If you are interested in hearing more or to see how we could help you, please get in touch [email protected]
