Senior Software Engineer – Cloud & Network Integration

Fiserv • Coral Springs, FL

2d • Onsite

About The Position

In this role, you will contribute to the development and support of the cloud-native Vision NEXT platform — Fiserv's next-generation, cloud-native card issuing and payment processing platform built on microservices, APIs, and event-driven architecture — leveraging APIs, event-driven architectures, AWS services, and real-time authorization capabilities. You will serve as a technical resource for application development, integration, troubleshooting, and client implementations while helping provide software solutions for our LATAM partners.

Requirements

• 6+ years of experience in software development, software engineering, or related technology disciplines.
• 3+ years of hands-on experience with Java, C#, C++, C, or similar object-oriented programming languages.
• Hands-on experience with REST and event-driven integrations — RabbitMQ, webhooks — and retry/idempotency design patterns.
• 2+ years of experience developing or supporting applications within AWS, Azure, or Google Cloud Platform (GCP) environments.
• Experience working with APIs, microservices, and distributed application architectures.
• Knowledge of networking fundamentals, including TCP/IP, DNS, HTTP/HTTPS, VPN connectivity, firewalls, load balancing, and SSL/TLS.
• Experience troubleshooting application performance, connectivity, and integration issues in enterprise environments.
• Bilingual proficiency in Spanish or Portuguese.
• Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field, or an equivalent combination of education, professional experience, and/or military experience.
• Strong verbal and written communication skills are required.

Nice To Haves

• Experience within financial services, payments, banking, or fintech environments.
• Experience with cloud-native architectures, event-driven systems, APIs, and real-time transaction processing platforms.
• Ability to write technical specifications a development team can build from.
• Experience deploying and supporting containerized applications on Kubernetes and Red Hat OpenShift, including networking, scaling, and troubleshooting.
• Familiarity with networking technologies including firewalls, load balancers, proxies, and hybrid cloud connectivity.
• Experience supporting applications in AWS environments.
• Experience with monitoring and observability tools.

Responsibilities

• Design, develop, test, and implement software applications supporting Fiserv's Vision NEXT platform.
• Develop and support REST and event-driven integrations — RabbitMQ, webhooks — applying retry and idempotency design patterns for reliable delivery.
• Develop and support integrations utilizing APIs, microservices, and event-driven architectures.
• Build and maintain API test automation using RestAssured, Karate, and Postman/Newman.
• Troubleshoot and resolve complex application, connectivity, and production support issues.
• Work closely with infrastructure, network, and security teams to ensure platform stability, performance, and reliability.
• Participate in code reviews to ensure adherence to coding standards, security requirements, and engineering best practices.
• Support cloud-native applications deployed within AWS environments.
• Monitor system performance and assist with root cause analysis for application and network-related issues.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior