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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
API & Service Development
Design, build, and optimise 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
Cloud & DevOps Enablement
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
Team Leadership & Mentorship
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: info@amach.com
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