Senior full stack .Net Developer

Fiserv • Berkeley Heights, NJ

1d

About The Position

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 full stack .Net Developer What does a successful Senior full stack .Net Developer do at Fiserv? A successful Senior full stack .Net Developer at Fiserv designs builds and maintains high-quality applications that support business goals and client needs. You partner with cross-functional teams to translate requirements into scalable, reliable solutions across the stack. You raise engineering standards through mentoring, strong delivery practices, and responsible use of AI-assisted development tools.

Requirements

• 10+ years of software development experience delivering production applications.
• 3+ years of programming experience with C#/.NET (Java/C/C++ acceptable in addition).
• 3+ years of experience with SQL databases and 3+ years with AWS, Azure, or GCP services.
• 3+ years of experience with CI/CD + DevOps and 3+ years working in Agile.

Nice To Haves

• 2+ years of experience in financial services or payments technology.
• 1+ year using AI-assisted development tools (for example, GitHub Copilot or ChatGPT Code Interpreter) to generate functions/classes, tests, and documentation.
• 1+ year applying AI tools to improve code quality (for example, refactoring UI code, suggesting performance improvements, and establishing cleaner patterns across large .NET projects).

Responsibilities

• Lead the design, development, and implementation of software applications to support Fiserv business goals.
• Collaborate with cross-functional teams to gather requirements and translate them into technical specifications.
• Perform coding, testing, and debugging to ensure optimal performance and reliability.
• Maintain and improve existing codebases and lead peer review processes to strengthen quality and consistency.
• Mentor junior developers and provide technical guidance, including leveraging AI tools (GitHub Copilot in Visual Studio or ChatGPT Code Interpreter) to accelerate .NET UI development, generate documentation/unit tests (for example, XML comments), and refactor for maintainability and performance.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed