Calling all innovators – find your future at Fiserv.
We’re Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day – quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we’re involved. If you want to make an impact on a global scale, come make a difference at Fiserv.
Job Title
Senior Java Engineer
Senior Java Developer — Fiserv in Nenagh
We are hiring a Senior Java Developer to join our engineering team at Fiserv in Nenagh. We build robust, scalable payment and financial software used by clients globally. As a senior engineer you will design and deliver high-quality services, mentor colleagues, and help shape technical direction.
What you’ll do
Design, build and maintain Java-based services and microservices using Spring (Boot, Cloud) and RESTful APIs.
Deliver clean, well-tested code using TDD/BDD practices and automated CI/CD pipelines.
Lead architecture and design discussions for scalability, performance and resilience.
Troubleshoot production issues, perform performance tuning and implement monitoring/observability.
Collaborate closely with product owners, QA, DevOps and other engineering teams in an Agile environment.
Review code, mentor mid/junior engineers, and promote best practices for security and software quality.
Contribute to technical roadmaps, continuous improvement and platform hardening efforts.
What You'll Have
5+ years hands-on Java development experience, with modern Java versions (Java 8+).
Strong experience with Spring Framework (Spring Boot) and building microservices.
Proven experience with REST APIs, cloud-native architectures and container technologies (Docker; Kubernetes experience desirable).
Solid knowledge of relational databases (SQL) and familiarity with NoSQL stores.
Experience with CI/CD tools (Jenkins, GitLab CI, Azure DevOps or similar) and automated testing frameworks (JUnit, Mockito).
Strong debugging, profiling and performance tuning skills.
Experience working in Agile/Scrum teams and collaborating with cross-functional stakeholders.
Excellent communication skills and ability to mentor others.
Bachelor’s degree in Computer Science, Engineering or equivalent practical experience.
Nice to have
Experience in payments, banking or financial services.
Familiarity with cloud platforms (AWS, Azure or GCP).
Knowledge of message-driven architectures (Kafka, RabbitMQ).
Security and compliance awareness relevant to financial systems.
Experience with observability tooling (Prometheus, Grafana, ELK).
What we offer
A supportive, collaborative engineering culture where we innovate together.
Competitive salary and benefits package and opportunities for career growth and learning.
Flexible working arrangements and a focus on work-life balance.
Opportunity to work on impactful, enterprise-grade payment and financial solutions.
About us We are Partners in Possibility — progressive, engaged and straightforward. At Fiserv in Nenagh we deliver technology that helps clients and communities move forward. If you’re motivated by solving hard problems and helping teams succeed, we want to hear from you.
Thank you for considering employment with Fiserv. Please:
- Apply using your legal name
- Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).
Our commitment to Diversity and Inclusion:
Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.
Note to agencies:
Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.
Warning about fake job posts:
Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.
