Senior Software Developer - C#

Location:
Twin Cities, MN (Hybrid / On-site preferred) |

Employment Type:

Full-Time | Experience Level: Mid–Senior (7+ years)

Client is seeking a Senior Software Engineer to help design, build, and scale core systems that power internal and customer-facing platforms. This role requires strong API engineering, backend expertise, and the ability to partner with both internal teams and external technology partners.

• Design, build, and maintain scalable, high-performance backend services and APIs using C#
• Develop RESTful APIs documented using OpenAPI (Swagger) standards
• Utilize AI-powered tools to support efficient, high-quality software development
• Optimize application performance, reliability, and scalability
• Build and maintain integrations with internal systems and external partners
• Contribute to architecture, modernization, and code quality initiatives
• Troubleshoot and resolve complex production issues
• Collaborate closely with business stakeholders and external partners
• Mentor and support other engineers

• IIS, containerized services
• PostgreSQL and relational databases
• Git Hub
• AI-assisted development tools
• React (nice to have)
• Windows Servers, VM and container deployments

• 7+ years of professional software development experience
• Proven ability to build scalable, performant systems
• Experience with APIs using OpenAPI standards