Senior Software Development Engineer

Job description:

As a Senior SDE, you will design, build, and launch scalable software services that support reliable, high-performing customer and business experiences. You will work across engineering teams and technology stacks to solve complex technical problems, improve service quality, and accelerate delivery using strong engineering fundamentals. Your work will help strengthen platform reliability, improve cloud-native development practices, and deliver high-quality software at scale.

What you'll do:

• Design, develop, and launch high-scale, highly available software services that support critical business and customer needs.
• Work across multiple technology stacks such as Java, .NET, or similar platforms, applying strong software engineering fundamentals and technology-agnostic problem solving.
• Build cloud-native applications and services using platforms such as Amazon Web Services (AWS), Microsoft Azure, Kubernetes, Kafka, Redis, and relational or NoSQL databases.
• Apply strong data structures, algorithms, and distributed systems concepts to solve complex engineering problems and improve service performance.
• Build and improve observability capabilities for services, including tracing, metrics, monitoring, and operational diagnostics.
• Leverage appropriate AI-assisted engineering tools to improve development productivity, delivery speed, and code quality.
• Partner with engineering teams to review requirements, design resilient technical solutions, and support successful production launches.
• Troubleshoot and resolve production issues through structured analysis, debugging, and continuous service improvement.
• Contribute to engineering best practices through code reviews, documentation, testing, and maintainable implementation patterns.
• Support front-end development needs when required, including work with technologies such as React or similar frameworks.
• Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.

Experience you'll need to have:

• 3+ years of experience in software engineering, software development, or related technical roles building and supporting production applications or services.
• 3+ years of experience developing services using Java, .NET, or similar programming languages in scalable application environments.
• Experience designing and launching high-scale, highly available services with strong performance, resilience, and operational quality.
• Experience with cloud development and architecture using AWS, Azure, or similar cloud platforms.
• Experience with Kubernetes, Kafka, Redis or similar caching technologies, and relational or NoSQL databases in distributed systems environments.
• Experience building observability capabilities including metrics, tracing, logging, and service monitoring.
• Bachelor's degree or higher in Computer Science, Software Engineering, Information Systems, or related field or equivalent combination of education, related experience and/or military experience.

Experience that would be great to have:

• Experience with front-end development using React or similar modern web frameworks.
• Experience using AI-assisted development tools to improve engineering productivity and delivery speed.
• Experience in financial services, payments, or other high-availability technology environments.
• Experience contributing to design reviews, code quality improvements, and production readiness practices.

How you'll work:

This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.