Senior Software Engineer

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.

Senior Software Engineer

As a .NET Software Engineer at Clover, you will design, build, and maintain high-performance backend systems and RESTful APIs using C# and .NET 8. Working with complex multi-tenant database architectures and cloud-hosted environments, you will drive seamless integrations with third-party platforms while ensuring robust security, performance, and reliability across our applications.

• Build high-performance RESTful Web APIs using C# and ASP.NET Core.
• Support and maintain existing code written in legacy .NET Framework codebases.
• Write, debug, and optimize complex raw SQL queries in MySQL and manage multi-tenant database architectures.
• Develop and consume RESTful endpoints, process JSON payloads, and manage Webhook events and OAuth 2.0 authentication for third-party integrations.
• Utilize Visual Studio, Git (Azure Dev Ops), Docker, and cloud-hosted environments (AWS / GCP) for development and deployment.

• C# & .NET 8 / ASP.NET Core:
  Strong backend development skills for building high-performance RESTful Web APIs.
• Legacy .NET Framework Familiarity:
  Comfort working with or supporting code written in legacy .NET Framework codebases.
• Raw MySQL & Hand-Crafted SQL:
  Excellent proficiency in writing, debugging, and optimizing complex raw SQL queries without reliance on ORMs.
• Multi-Tenant Architecture:
  Experience with multi-tenant database designs, tenant isolation strategies, and efficient connection handling.
• REST APIs & Webhooks:
  Experience building and consuming RESTful endpoints, processing JSON payloads, and managing Webhook events for third-party integrations.
• OAuth 2.0 & Authentication:
  Understanding of token management and securing external API communication.
• IDE & Tooling:
  Proficiency in Visual Studio for backend development and debugging.
• Git Version Control:
  Hands-on experience using Git within environments like Azure Dev Ops.
• Docker & Basic Cloud Context:
  Experience using Docker for local development setup and familiarity working within cloud-hosted environments (AWS / GCP).

• Java Background (Bonus):
  Exposure to Java backend technologies is a plus, as parts of the ecosystem may leverage Java in future iterations.
• Experience with React and Typescript

$ - $

These pay ranges apply to employees in Sunnyvale, California. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company's sole discretion.

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