> Markdown version of [/jobs/ext/2642942-sr-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/2642942-sr-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Full Stack Developer - **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), Adobe InDesign, Agile Methodology, Artificial Intelligence, Automation of Tests, Software Quality, Code Review, Databases, Continuous Integration, Relational Databases, DevOps, Python (Programming Language), MongoDB, MySQL, Productivity Software, Release Management, Software Engineering, TypeScript, Web Applications, Google Cloud, ReactJS, System Availability, Large Language Models, Spring-boot, AWS Lambda, Backend, Kotlin, Kubernetes, Information Technology, Front End Software Development, Software Coding, Restful APIs, Legacy Systems, Microservices - **Published:** August 2, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=d79b711845ae3c98 ## About the Role * Bachelor's degree in Computer Science, Engineering, or equivalent practical experience. * 7+ years of professional software development experience, with a focus on Fullstack engineering. * Strong backend coding skills with deep expertise in Java as a primary language, alongside experience using Spring Boot to build microservices. * Professional front-end engineering experience using React and TypeScript. * Proven experience using and championing AI-based software engineering and productivity tools (e.g., AI coding assistants, automated testing, code quality analysis, operational intelligence tools) to accelerate delivery. * Strong working knowledge of relational databases (e.g., MySQL) and document databases (e.g., MongoDB). Experience that would be great to have: * Previous experience in the payments or fintech industry. * Hands-on background in re-architecting legacy systems for high availability, performance, and scale. * Familiarity with Google Cloud Pub/Sub, Kubernetes (K8s), AWS Lambda, LLM prompting techniques, Kotlin, or Python. ## Description * Architect, design, and develop web-based front-end applications and backend microservices primarily using Java, JavaScript, TypeScript, React, and Python. * Design, implement, and maintain performant REST APIs for web clients, devices, mobile apps, and 3rd-party integrations. * Own services and features end-to-end from initial development through deployment, production monitoring, and on-call release management rotations. * Promote the effective use of AI-powered software engineering and productivity tools (AI coding assistants, test generation, code reviews, documentation, and incident analysis) to improve developer efficiency and code quality. * Translate product requirements into functional, extensible software while partnering with cross-functional, distributed Agile teams to assist with project planning and feature development. * Partner with the Infrastructure and QA teams to design data models supporting large-scale, highly available services and develop comprehensive test plans. * Coach and mentor junior engineers, advocate engineering best practices with a CI/CD DevOps mindset, and help define the technical software roadmap. * Triage bugs, resolve operational issues, participate in design/code reviews, and evaluate modern frameworks to improve product performance. * Responsibilities listed are not intended to be all-inclusive and may be modified as necessary. ## Related Videos - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [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) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Coding for Good: Achieving social change with an app](https://www.wearedevelopers.com/videos/1645-coding-for-good-achieving-social-change-with-an-app) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [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) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)