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Robert Half Logo Robert Half · IT - Software Development

Senior Software Developer

United States, Woodbury Employment contract, Contract work · Job Posted June 28, 2026
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Job Description

We are looking for an experienced Senior Software Developer to help create and enhance the core applications that support both business operations and customer-facing products in St. Paul. This position focuses on building dependable backend solutions, improving system performance, and partnering with technical teams to deliver well-designed software. The ideal candidate brings strong expertise in C# and .NET technologies, along with a practical approach to API development, integration work, and modern engineering practices.

Job Responsibility

  • Create and support backend applications and services in C# and .NET with an emphasis on stability, scalability, and maintainability
  • Develop and refine REST-based interfaces, ensuring clear API design and accurate documentation through OpenAPI and Swagger standards
  • Use AI-enabled development tools to streamline coding, testing, and delivery while maintaining high quality standards
  • Improve application efficiency by identifying opportunities to strengthen performance, resilience, and overall system responsiveness
  • Connect software platforms with internal business systems and third-party technologies to enable reliable data exchange and functionality
  • Participate in technical design discussions and help advance architecture, modernization efforts, and engineering best practices across the environment
  • Investigate complex production problems, determine root causes, and implement effective long-term solutions
  • Contribute to development work involving containerized services, relational databases, source control workflows, and frontend collaboration with React

Requirements

  • At least 7 years of software development experience with a strong focus on backend engineering
  • Advanced proficiency in C#, .NET, ASP.NET, and related Microsoft development frameworks
  • Hands-on experience building RESTful APIs and documenting services with OpenAPI or Swagger
  • Solid knowledge of relational database development, including PostgreSQL, MySQL, and SQL-based data modeling
  • Familiarity with containerized application environments and modern source control practices using GitHub
  • Experience working with JavaScript and React in support of full-stack or cross-functional development efforts
  • Demonstrated ability to troubleshoot complex application issues and collaborate effectively with internal stakeholders and external partners

What we offer

  • Medical
  • Vision
  • Dental
  • Life and disability insurance
  • 401(k) plan
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