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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Full Stack Software Engineer - **Company:** Fiserv, Inc. - **Location:** Sunnyvale, CA, United States - **Experience:** Expert - **Salary:** $140,000.0 - $210,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Code Review, Relational Databases, Software Debugging, DevOps, Java Virtual Machine (JVM), MySQL, Network Service, Release Management, Clover, Responsive Web Design, Web Application Security, Software Engineering, TypeScript, Management of Software Versions, Web Applications, ReactJS, System Availability, Spring-boot, Backend, Git, Data Layers, Containerization, Kubernetes, Front End Software Development, Api Design, Software Coding, Restful APIs, Microservices - **Published:** August 8, 2026 - **Apply:** https://www.dice.com/job-detail/fec50184-1d7a-4e68-a2d7-9c74d6027d1b ## About the Role * Core Engineering Foundations: 6+ years of professional software development experience delivering production-grade, full-stack enterprise web applications within a product-driven environment. * Frontend Excellence: Strong hands-on experience and deep proficiency building highly accessible, responsive web interfaces using React.js, TypeScript, and JavaScript. * Java Mastery: Strong backend coding skills within the JVM ecosystem, utilizing Java and the Spring Boot framework to design, build, and scale distributed microservices. * Orchestration & Scale: Practical experience developing, containerizing, and deploying workloads within a Kubernetes (K8s) environment. * Data Layer Architecture: Solid experience working with relational databases, specifically MySQL or similar relational engines. * Platform Mindset: Ability to generalize complex business processes and build simple, flexible, and extensible core domain services that cleanly support multiple consumer products. * API Design: Deep expertise in designing, versioning, and maintaining secure, performant RESTful APIs for web and mobile clients. * DevOps Maturity: Strong proficiency with Git, automated testing frameworks, and managing automated CI/CD pipelines to ensure release stability. Experience that would be great to have: * Payment Domain Expertise: Direct experience within the fintech, POS, banking, or e-commerce industries (familiarity with core checkout or payment transaction lifecycles is a massive plus). * System Hardening: Foundational understanding of web security protocols, network communication protection, data tokenization, and core cryptography. * Full-Stack Versatility: Comfortable working across multiple parts of the application stack and adjusting quickly in an iterative model where specifications and design layouts constantly evolve. ## Description * Lead the full-stack design, development, and implementation of scalable software applications and user interfaces to support Clover's payment processing ecosystem. * Partner deeply with cross-functional product, design, and architecture teams to gather complex requirements and translate business goals into intuitive frontend workflows and clean backend technical specifications. * Perform rigorous coding, testing, and proactive debugging across both frontend and backend components to guarantee optimal latency, responsiveness, and transaction reliability. * Maintain, refactor, and evolve existing full-stack payment codebases while leading architectural design and peer code review processes to uphold elite engineering standards. * Mentor engineers and emerging technical leaders, providing technical guidance to enhance the collective capabilities and product-thinking of the development team. * Participate in regular on-call and release management rotations to provide production support services and maintain high system availability. * Responsibilities listed are not intended to be all-inclusive and may be modified as necessary. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment) - [Branch your database like your code: How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025)