Senior Software Engineer – Cloud & Network Integration

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 Software Engineer – Cloud & Network Integration About your role: 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. What you'll do 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. Experience you'll need to have: 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. Experience that would be great to have: 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. Important information about this role: This is a fully onsite position, Monday through Friday. Fiserv believes in the value of in-person collaboration, which supports effective onboarding, drives innovation, strengthens teamwork, and enhances overall productivity. Must possess U.S. Citizenship or U.S. Permanent Resident (Green Card) status. Strong verbal and written communication skills are required. How you'll work: This role requires regular use of a computer, phone, and audio/video collaboration equipment. Success in this role requires strong technical problem-solving, communication, analytical, and relationship-management skills. You will contribute technical expertise to deliver successful solutions while collaborating across multiple technology disciplines. #ApplicationSupport #SystemsIntegration #InfrastructureEngineering #APIIntegration #Microservices #CloudEngineering #LI-CD1 This role is not eligible to be performed in Colorado, California, District of Columbia, Hawaii, Illinois, Massachusetts, Maryland, Minnesota, New Jersey, New York, Nevada, Rhode Island, Vermont, Virginia, Maine or Washington. It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran. Please note that salary ranges provided for this role on external job boards are salary estimates made by outside parties and may not be accurate. 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 Equal Opportunity: 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. If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact . Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information. 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. 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