Principal Java Engineer
4 weeks ago
€105-111k + 10% bonus + Equity
Event-Driven Microservices | Java | AWS | Hands-on Leadership
An innovative scale-up is looking for a Principal Java Engineer to help them re-architect a critical platform used by law enforcement, emergency response, and global enterprise retailers.
With $30 million Series A funding secured, they're scaling fast - across the UK, Ireland, the US, and Middle East - and building out their in-house software capability after years of outsourced development. You'll play a key role in rebuilding their platform from a monolithic legacy system to a modern, event-driven microservices architecture hosted on AWS.
What you'll doLead the design and build of scalable Java microservices in an event-driven architecture
Help re-architect a platform used by thousands of users globally - high visibility, high impact
Work closely with product, QA, design, and senior engineering leadership
Provide hands-on coding, technical mentoring, and code reviews
Champion best practices in software design, performance, and system reliability
Be a key voice in technical strategy and architecture discussions
6+years' experience with Java and Spring Boot, strong backend focus
- Currently in a Principal, Staff or Tech Lead hands-on role
Expertise in microservices and event-driven systems (Kafka, SNS/SQS, etc.)
Solid cloud experience in AWS
Experience breaking down monoliths into distributed systems
Comfortable in fast-paced scale-up environments - wearing multiple hats when needed
Strong communicator with a collaborative mindset
Bonus: exposure to C/C++ (due to the hardware element of the product)
€105-111k base salary
10% bonus + Equity/Share Options
Private healthcare after 25+ days
No pension currently offered
Flexible hybrid working - 1 day/week in Belfast HQ with occasional Dublin visits
Why join?
You'll be joining a high-growth tech scale-up on a mission to improve public and workplace safety through cutting-edge hardware and software. It's an opportunity to do meaningful technical work, influence architecture, and help shape a product that's making a real-world difference - all while working alongside smart, supportive people in a down-to-earth team.
To speak in absolute confidence about this opportunity please contact Jack Tyrrell, Specialist Recruitment Consultant at MCS Group 016994371or send an up to date CV via the link provided.
If this position is not right for you, we may have others that are. Please visit www.mcsgroup.jobs to view a wide selection of our current jobs. All conversations will be treated in the strictest of confidence.
#J-18808-Ljbffr-
Principal Java Engineer
4 weeks ago
Dublin, Dublin City, Ireland MCS Group Consultancy Full timePrincipal Java Engineer (Backend) - Scale-Up Security Tech - Remote/Hybrid (Ireland/NI) €105-111k + 10% bonus + Equity Event-Driven Microservices | Java | AWS | Hands-on Leadership An innovative scale-up is looking for a Principal Java Engineer to help them re-architect a critical platform used by law enforcement, emergency response, and global enterprise...
-
Principal Java Engineer
1 week ago
Dublin, Dublin City, Ireland MCS Group Consultancy Full timePrincipal Java Engineer (Backend) - Scale-Up Security Tech - Remote/Hybrid (Ireland/NI) €105-111k + 10% bonus + Equity Event-Driven Microservices | Java | AWS | Hands-on Leadership An innovative scale-up is looking for a Principal Java Engineer to help them re-architect a critical platform used by law enforcement, emergency response, and global enterprise...
-
Principal Java Developer
1 day ago
Dublin, Dublin City, Ireland Reperio Human Capital Ltd Full timePrincipal Software Engineer Fully Remote My client is looking for a seasoned Principal Software Engineer to establish technical leadership while remaining hands-on with significant experience in coding, architecture, and system design.Principal Software Engineer - Required Experience: 12+ years of experience in software design, coding, and application...
-
Principal Java Developer
2 weeks ago
Dublin, Dublin City, Ireland Reperio Human Capital Ltd Full timePrincipal Software Engineer Fully Remote My client is looking for a seasoned Principal Software Engineer to establish technical leadership while remaining hands-on with significant experience in coding, architecture, and system design. Principal Software Engineer - Required Experience: 12+ years of experience in software design, coding, and application...
-
Principal Java Engineer
4 weeks ago
Dublin, Dublin City, Ireland MCS Group Full timePrincipal Java Engineer (Backend) - Scale-Up Security Tech - Remote/Hybrid (Ireland/NI)€105-111k + 10% bonus + EquityEvent-Driven Microservices | Java | AWS | Hands-on LeadershipAn innovative scale-up is looking for a Principal Java Engineer to help them re-architect a critical platform used by law enforcement, emergency response, and global enterprise...
-
Principal Java Developer
5 hours ago
Dublin, Dublin City, Ireland Reperio Human Capital Full timePrincipal Java Developer 169407 Desired skills: Java, Spring, Docker, Cloud, REST API, Microservices Principal Software EngineerFully RemoteMy client is looking for a seasoned Principal Software Engineer to establish technical leadership while remaining hands-on with significant experience in coding, architecture, and system design.Principal Software...
-
Principal Java Engineer
1 week ago
Dublin, Dublin City, Ireland MCS Group | Your Specialist Recruitment Consultancy Full timeMCS Group | Your Specialist Recruitment Consultancy provided pay rangeThis range is provided by MCS Group | Your Specialist Recruitment Consultancy. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the job poster from MCS Group | Your Specialist Recruitment ConsultancyHelping...
-
Principal Java Engineer
3 weeks ago
Dublin, Dublin City, Ireland MCS Group | Your Specialist Recruitment Consultancy Full timeGet AI-powered advice on this job and more exclusive features.MCS Group | Your Specialist Recruitment Consultancy provided pay rangeThis range is provided by MCS Group | Your Specialist Recruitment Consultancy. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the job poster...
-
Principal Java Developer
5 hours ago
Dublin, Dublin City, Ireland Reperio Human Capital Full timePrincipal Java Developer 167392 Desired skills: Java, Spring, Docker, Cloud, REST API, Microservices Fully RemoteReperio has partnered with a company who are looking for a seasoned Principal Software Engineer to establish technical leadership while remaining hands-on with significant experience in coding, architecture, and system design.Requirements:12+...
-
Principal Software Engineer
5 days ago
Dublin, Dublin City, Ireland Reperio Human Capital Ltd Full timePrincipal Software Engineer Fully Remote My client is looking for a seasoned Principal Software Engineer to establish technical leadership while remaining hands-on with significant experience in coding, architecture, and system design.Principal Software Engineer - Required Experience: 10+ years of experience in software design, coding, and application...