CareerPlan

Senior Software Engineer

Sunnyvale, CA, USFull-time$160k–$240k2026-10-09 → 2026-11-09

Core

Design, build, and maintain high-performance backend systems and RESTful APIs for a multi-tenant fintech platform.

Role type

Senior IC .NET Software Engineer

Builds

High-performance RESTful Web APIs, backend services, and cloud-hosted applications for financial institutions and consumers.

Domain

Fintech / Payments / Cloud Infrastructure

Required skills

C# & .NET 8, ASP.NET Core, Raw SQL (MySQL), Multi-tenant database architecture, REST APIs & Webhooks, OAuth 2.0, Docker, Git (Azure DevOps)

Preferred skills

Java backend technologies, React, TypeScript

Technologies

C#, .NET 8, ASP.NET Core, MySQL, AWS, GCP, Docker, Visual Studio, Azure DevOps, Git

Responsibilities

Build high-performance RESTful Web APIs using C# and ASP.NET Core; Support and maintain existing legacy .NET Framework codebases; Write, debug, and optimize complex raw SQL queries; Develop and consume RESTful endpoints and manage Webhook events; Utilize Docker and cloud-hosted environments for development and deployment.

Seniority

Senior, hands-on IC