Full Stack Developer
Location: Madison, Wisconsin
Country: United States
Category: Software Development
Workplace Location: Onsite
Employment Type: Contract
Posted Date: October 12, 2026
Job ID: 652847
Job Description
Full Stack Developer (C#/.NET & React)
Location: Sun Prairie, WI (Hybrid: 2 days onsite, 3 days remote)
Duration: 12-Month Contract with Potential Extension
Schedule: Full-Time, 40 Hours/Week
Interview Process: 1-2 Rounds (Video Interview followed by In-Person Interview)
Compensation: $65-75/hour W2 or $75-85/hour 1099/C2C
We are seeking an experienced Full Stack Developer with strong expertise in C#/.NET and React to join a growing technology team supporting large-scale application modernization initiatives. This role offers the opportunity to contribute to the migration of critical business systems while helping enhance and modernize enterprise applications.
The ideal candidate will have a strong background in modern web development, API integration, and building scalable, user-focused applications in an Agile environment.
Key Responsibilities- Design, develop, and maintain full stack applications using React and C#/.NET technologies
- Build and enhance front-end features and reusable UI components using modern React practices
- Collaborate closely with backend developers to integrate RESTful and GraphQL APIs
- Develop responsive, accessible, and high-performing web applications
- Participate in architecture discussions, sprint planning, code reviews, and technical design sessions
- Troubleshoot, debug, and resolve application issues across the technology stack
- Contribute to frontend best practices, testing strategies, and component libraries
- Support ongoing modernization and migration initiatives within enterprise application environments
- 5+ years of professional web application development experience
- 4+ years of hands-on experience with C#/.NET development
- Strong experience building applications with React
- Proficiency with JavaScript and TypeScript
- Experience working with React Hooks, Context API, state management, and routing
- Experience integrating RESTful and/or GraphQL APIs
- Strong understanding of UI architecture and responsive design principles
- Proficiency with HTML5, CSS3, and component-based development frameworks
- Excellent problem-solving, communication, and collaboration skills
- Ability to work effectively in a hybrid team environment
- Experience with secure API design and authentication technologies such as OAuth and JWT
- Exposure to Azure cloud services
- Experience with CI/CD pipelines and DevOps practices
- Background working in microservices architectures
- Experience supporting enterprise-scale applications
- Familiarity with Agile development methodologies and code review best practices
- Opportunity to work on highly visible modernization initiatives
- Exposure to modern Microsoft technologies and contemporary web development practices
- Collaborative and supportive team environment
- Long-term contract opportunity with strong potential for extension
- Hybrid work schedule offering flexibility and work-life balance
React, TypeScript, JavaScript, C#, .NET, Full Stack Developer, Software Engineer, REST APIs, GraphQL APIs, Azure, Microservices, Front End Development, Web Applications, Agile, CI/CD, DevOps
#LI-KS1
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EEO Statement
The staffing industry has seen an increase in people falsely representing themselves as recruiters to gather personal information from job seekers. For your safety, do not provide sensitive data to anyone you have not spoken with thoroughly, never provide banking information during the application process, and always double check the email address of the Recruiter to ensure it’s from an official Planet domain (@theplanetgroup.com or @launchcg.com) - and not a domain with an alternative extension like .net, .org, or .jobs.
The Planet Group and our companies are equal opportunity employers. It is our practice not to discriminate against any employee or applicant based on any criteria, condition or basis protected by laws or regulations in the locations where we do business. All qualified applicants are encouraged to apply. We celebrate diversity and are committed to providing an environment of mutual respect. We believe that diversity, equity, and inclusion enable us to better meet our mission and values while serving our clients across the globe. If you have a disability or handicap and would like us to accommodate you in any reasonable way, please inform your recruiter, or contact us, so that we can discuss the appropriate alternatives available.
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About The Planet Group
The Planet Group is a global professional services firm delivering strategic staffing and advisory solutions. We operate at the intersection of talent and transformation – connecting the right people with the right opportunities in the areas of technology, engineering, accounting & finance, digital marketing, and manufacturing.
As one of the largest staffing companies in the US, we operate with a global reach and a performance-first mindset. We partner with clients to move fast, stay agile, and drive measurable results – building high-impact teams that fuel transformation and growth.
