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# Mid-level Full Stack Engineer C# .NET

- **Company:** Charles Schwab Inc.
- **Location:** Southlake, TX, United States
- **Experience:** Experienced
- **Salary:** $110,000.0 - $145,000.0
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Agile Methodology, Application Performance Management, User Authentication, C Sharp (Programming Language), Cascading Style Sheets (CSS), Distributed Systems, Scrum Methodology, Software Systems, TypeScript, Web Application Frameworks, Web Services, Reliability of Systems, AngularJS, Code Testing, Restful APIs, Domain Driven Design, Legacy Systems
- **Published:** May 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=337ed01eb0ec6ca8

## About the Role

* 8+ years of hands-on experience building and maintaining full-stack web applications; BS/MS degree preferred or equivalent experience.
 * Demonstrated ability to design, develop, and support enterprise-grade software solutions
 * Proficiency in C# and modern .NET development
 * Strong working knowledge of JavaScript, HTML, and CSS
 * Experience building client-side applications using modern frameworks such as Angular and TypeScript
 * Ability to design and consume RESTful APIs and services
 * Solid understanding of relational databases and SQL fundamentals
 * Demonstrated ability to write maintainable, well-tested code using modern testing practices
 * Strong communication skills with the ability to collaborate across technical and non-technical partners, * Experience designing scalable architectures and applying domain-driven design concepts
 * Familiarity with authentication and authorization frameworks
 * Experience improving application performance, resilience, and observability
 * Exposure to cloud-based or distributed systems
 * Experience working in Agile or Scrum-based delivery teams
 * Passion for continuous learning and mentoring others

## Description

Workplace Services Engineering is transforming how employers and participants experience workplace financial solutions. As a Senior Full-Stack Software Engineer, you'll play a critical role in modernizing platforms that support millions of participants. You'll collaborate across engineering, product, and business partners to design, build, and improve scalable applications that are secure, resilient, and intuitive.

This is a role for someone who enjoys solving complex problems, influencing technical direction, and mentoring others-while continuing to grow their own skills in a fast-moving, purpose-driven environment.

What You'll Do

 * Design, build, and enhance full-stack applications that support critical workplace and retirement solutions
 * Modernize legacy systems to improve scalability, performance, security, and compliance
 * Develop and consume APIs and services that enable safe, efficient integration across platforms
 * Apply sound engineering practices to improve system reliability, availability, and performance
 * Partner closely with peers to influence design decisions and technical standards
 * Use AI-assisted development tools to improve productivity, quality, and speed
 * Contribute to a collaborative engineering culture through mentoring, knowledge sharing, and clear documentation


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