Senior Java Integration Consultant

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 Integration Consultant

About your role:

At Fiserv, we are dedicated to the services that keep the wheels turning in the world of finance. Our API and Integration Practice plays a vital role in ensuring our clients receive top-tier solutions that align with their unique needs. We advise, design, develop, and deliver enterprise-grade integration solutions for our financial services clients—particularly banks and credit unions.

You will spend the majority of your time hands-on developing APIs, services, and data flows. You may also provide architectural guidance and technical mentorship to other team members. The ideal candidate has a passion for building robust, secure, and reusable integrations that power digital banking experiences.

What you'll do:

• Translate business and technical requirements into scalable integration designs including synchronous APIs, asynchronous messaging, and event streaming.

• Serve as a technical lead for integration projects, guiding developers and consultants on implementation best practices.

• Design, Develop, test, and maintain Rest APIs using Java and Spring Boot frameworks adhering to standards and business requirements.

• Design and implement cloud-native solutions leveraging major cloud platforms.

• Collaborate with product managers, architects, and other developers to deliver robust software solutions.

• Optimize application performance, scalability, and security across cloud environments.

• Mentor junior developers and participate in code reviews to uphold coding standards.

• Develop secure, high-performance REST and SOAP APIs, middleware services, and event-driven components that connect core banking systems, LOS platforms, CRMs, and other financial systems.

• Implement message routing, orchestration, and data transformation (DataWeave, JSON, XML, XSLT, etc.).

• Write clean, efficient, and well-documented code following best practices.

• Participate in unit, integration, and performance testing of APIs and services.

• Build CI/CD pipelines for automated testing and deployment using Azure DevOps, GitHub Actions, or similar tools.

• Conduct troubleshooting, debugging, and root-cause analysis for integration issues in test and production environments.

Experience you'll need to have:

• 8+ years of professional design, java coding experience.

• 6+ years' experience in Rest API development and Spring Framework.

• Expertise in Spring Boot and microservices architecture.

• 6+ years of experience in discussing and analyzing technical and business topics with both technical and non-technical personnel.

• 6+ years of experience in adhering to or improving procedures and processes required for the effective software development and implementation projects.

• 6+ years of experience in multi-tasking and prioritizing workloads efficiently.

• 6+ years of experience working effectively with a diverse group of stakeholders.

• Strong problem-solving skills and ability to work independently or as part of a team.

• Excellent communication skills and attention to detail.

Experience that would be great to have:

• Bachelor’s degree in Computer Science, Information Technology, or related field.

• Hands-on experience with cloud platforms (AWS, Azure, Google Cloud, etc.).

• Experience with containerization (Docker, Kubernetes).

• Knowledge of CI/CD pipelines and DevOps practices.

• Understanding of security best practices in cloud development.

• Familiarity with CI/CD pipelines, Docker, Kubernetes, and API Gateway patterns.

• Deep understanding of REST, SOAP, OAuth2, JWT, JSON, XML, and secure integration practices.

• Proven experience integrating financial systems such as core banking, lending, payments, or digital channels.

• Knowledge of software project management methods as a participant.

• Proven ability to operate under minimal supervision and meet deadlines in a fas