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# Senior Software Engineer - .NET CORE, React, PostgreSQL

- **Company:** Addison Group
- **Location:** Glendale, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $145,000.0 - $170,000.0
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), Application Performance Management, C Sharp (Programming Language), Software as a Service, Code Review, Relational Databases, Distributed Systems, PostgreSQL, Microsoft Software, Standard Sql, Software Construction, Software Engineering, Web Applications, Software Organization, Enterprise Software Applications, .NET Core, ReactJS, Backend, Production Code, Front End Software Development
- **Published:** July 2, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=83b0a0d1037ee7f4

## About the Role

Work Authorization: Must be authorized to work in the United States. This position is not eligible for sponsorship., * 7+ years of professional software engineering experience.

 * Strong experience with C#/.NET and modern application development.
 * Experience building front-end applications using React.
 * Strong SQL and relational database experience.
 * Experience building scalable cloud-based applications.
 * Excellent communication and collaboration skills.
 * Passion for writing clean, maintainable, production-quality code.

Preferred

Experience with distributed systems or modern SaaS platforms.

 * Background in regulated industries such as healthcare, insurance, financial services, or enterprise software.
 * Experience using AI-assisted development tools while maintaining strong engineering discipline.

## Description

Our client is an established software organization seeking a Senior Full Stack Software Engineer to help modernize and evolve a highly scalable enterprise SaaS platform supporting mission-critical business operations.

This role offers an opportunity to contribute to both new feature development and modernization initiatives while helping shape the long-term technical direction of the platform. You'll work alongside experienced engineers, product leaders, and architects to deliver reliable, scalable software used by enterprise customers nationwide., * Design, develop, and enhance enterprise web applications using modern Microsoft technologies.

 * Build scalable backend services and APIs while contributing to responsive front-end experiences.
 * Collaborate closely with Product Management, QA, and Engineering to deliver high-quality software.
 * Participate in architecture discussions, code reviews, and technical planning.
 * Improve application performance, reliability, security, and maintainability.
 * Mentor fellow engineers and promote software engineering best practices.


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