Senior React Developer (.NET/C# & Azure)

Cystems Logic; Los Angeles (CA); On-site; USD 100,000 - 140,000; Full time

Job summary

Cystems Logic is looking for a Senior React Developer in Los Angeles, CA. This long-term onsite role focuses on building scalable web applications using React.js while integrating with backend services developed in .NET and C#. Candidates should have solid experience with cloud solutions, particularly Microsoft Azure.

The ideal candidate will work closely with various teams to ensure high-quality deliverables, participate in architecture discussions, and implement best practices for security and scalability.

Qualifications

• Experience as a hands-on Senior React Developer.
• Strong front-end expertise in React.js.
• Background in .NET, C#, and cloud environments.

Responsibilities

• Design, develop, and maintain scalable web applications using React.js.
• Build responsive and user-friendly interfaces.
• Develop backend services and APIs using C#.
• Integrate front-end applications with RESTful APIs.
• Design and implement cloud-based solutions using Azure.
• Troubleshoot and optimize existing applications.

Skills

React.js

C#

.NET

Microsoft Azure

JavaScript/TypeScript

Problem-solving

Job description

Job Title: Senior React Developer (.NET/C# & Azure)

Location: Los Angeles, CA (Onsite)

Duration: Long term Contract (Potential Extension)

Position Overview

We are seeking an experienced React Developer with strong front-end expertise and a solid background in .NET, C#, and Microsoft Azure for a long-term onsite engagement in Los Angeles, CA. The ideal candidate will be a hands‑on Senior React Developer who can build modern web applications using React while collaborating across backend and cloud environments. This role requires strong technical skills, excellent problem-solving abilities, and experience working in enterprise-scale development environments.

Key Responsibilities

• Design, develop, and maintain scalable web applications using React.js and modern JavaScript/TypeScript frameworks.
• Build responsive and user-friendly interfaces with a focus on performance and usability.
• Develop and maintain backend services and APIs using C# and .NET Core/.NET 6+.
• Integrate front-end applications with RESTful APIs and microservices.
• Design and implement cloud-based solutions using Microsoft Azure.
• Participate in architecture discussions, code reviews, and technical design sessions.
• Collaborate closely with business stakeholders, product owners, QA teams, and other developers.
• Troubleshoot, optimize, and enhance existing applications.
• Implement best practices for application security, scalability, and maintainability.
• Support CI/CD pipelines and automated deployment processes.
• Contribute to Agile/Scrum ceremonies and deliver high-quality solutions within project timelines.