Technical Lead - Commerce Hub

Location: Nenagh, Ireland

Remote Type: Onsite

Time Type: Full time

Job Description

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

What does a successful Technical Lead Payment Processing do?

A successful Technical Lead at Fiserv drives modernization that lets our clients focus on life, not financial plumbing. You lead engineering for a global payments platform, applying technical judgment and collaborative leadership to deliver secure, high‑performing solutions. You model our Partners in Possibility mindset by inspiring teams to adopt modern practices and deliver measurable business value.

What you will do:

• Own a major modernisation stream on a global payment platform focused on transitioning to microservices and event-driven architectures exceeding 5,000 transactions per second and tens of millions of transactions per day.

• Design, build, and deliver high-quality, scalable software applications that strengthen Fiserv payment processing capabilities.

• Collaborate across product, architecture, operations, and compliance teams to translate business needs into technical outcomes.

• Leverage and extend our core technology stack (Java, AWS, Kafka, Kubernetes) to build secure, reliable, and performant solutions.

• Champion engineering excellence through code reviews, automated testing, and driving improvements in CI/CD pipelines.

• Mentor and uplift the team, sharing expertise and guiding engineers to adopt modern development practices.

• Act as a change agent to evolve technology, processes, and team mindset toward modern software engineering principles.

• Drive initiatives from concept to production, balancing strategic modernization with near-term delivery needs.

What you will need to have:

• Demonstrated leadership delivering complex, distributed systems and modernization programs in production environments.

• Strong Java expertise, including modern frameworks, performance tuning, and clean, testable design.

• Hands-on AWS experience and cloud-native application design patterns.

• Expertise in Kafka or comparable event streaming platforms and event-driven architecture principles.

• Kubernetes and container orchestration experience, combined with CI/CD and DevOps practices that enable reliable, rapid delivery.

What would be great to have:

• Background in payments or financial services with awareness of performance, security, and compliance (e.g., PCI) requirements.

• Experience modernizing legacy, mission-critical systems to microservices and event-driven patterns.

• Proven success improving throughput and resilience for high‑volume systems.

• Strong observability and SRE practices (monitoring, tracing, capacity planning).

• Experience with distributed transactions, CDC, or eventual-consistency design patterns.

• History of introducing tools or practices that measurably improved team delivery and product quality.

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.