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Principal Software Engineer - C#/.NET

Date Posted: Feb 25, 2026

Job #1686228
Contract
Westlake, Texas, USA
65.00 - 85 per hour (USD)

Title: Principal SOftware Engineer - C#/.Net

Location: Keller, TX

Type: Contract to Hire

Compensation: $65 - $85/hr W2

Position Overview:

Our client is scaling their global engineering organization and hiring multiple Principal Engineers to lead a large modernization effort of their Core Platform. This includes rewriting the core Application using a modern cloud‑native architecture, while simultaneously adding agentic AI capabilities to existing SaaS products.

These roles are 100% hands‑on, with direct ownership over architecture, coding, design patterns, and technical leadership.

Key Responsibilities

  • Lead architecture and technical strategy for enterprise-grade backend applications using ASP.NET / C# / .NET Core

  • Design and build scalable, secure, and maintainable RESTful APIs

  • Architect and optimize high-performance database integrations (SQL Server / PostgreSQL)

  • Ensure database scalability, indexing strategy, query optimization, and performance tuning

  • Lead cloud-native deployments and infrastructure design in AWS

  • Establish best practices for Git workflows, CI/CD, and automated testing

  • Conduct code reviews, mentor senior and mid-level engineers, and enforce engineering standards

  • Drive system reliability, performance monitoring, and production support strategy

  • Collaborate with product and business teams to translate requirements into scalable technical solutions

Required Qualifications

  • 10+ years of software engineering experience, primarily in backend development

  • Deep expertise in C#, ASP.NET, and .NET Core framework

  • Strong experience designing and consuming REST APIs

  • Advanced SQL knowledge with hands-on experience in PostgreSQL and/or SQL Server

  • Proven experience optimizing database performance and handling high-throughput integrations

  • Experience designing scalable architectures in AWS

  • Strong understanding of distributed systems and microservices architecture

  • Expertise with Git version control and CI/CD pipelines

About Korn Ferry

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