Senior Backend Engineer - OpenAPI APIs & Mentorship(Hybrid)

SkyWater Search Partners; Saint Paul (MN); On-site; USD 135,000 - 165,000; Full time

Job summary

SkyWater Search Partners partners with a PE-backed technology company to hire a Senior Software Engineer responsible for backend systems and APIs behind internal and customer-facing platforms.

You'll work in C# and .NET, design RESTful APIs to OpenAPI standards, own architecture, code quality, and mentor growing engineers. This hands-on role offers real ownership and collaboration with internal teams and external partners as the platform modernizes.

Qualifications

• 5+ years of professional software development experience.
• Strong backend development experience in C#.
• Experience building APIs to OpenAPI standards.

Responsibilities

• Design, build, and maintain scalable backend services and APIs using C#.
• Develop RESTful APIs documented to OpenAPI (Swagger) standards.
• Collaborate with internal teams and external partners on modernization.
• Mentor and support other engineers.
• Troubleshoot and resolve production issues.
• Contribute to architecture, modernization, and code quality initiatives.

Skills

C#

.NET

API design

RESTful APIs

OpenAPI/Swagger

Backend development

Mentoring

Communication

Tools

ASP.NET

SQL Server

Swagger

Job description

SkyWater Search Partners partners with a PE-backed technology company to hire a Senior Software Engineer responsible for backend systems and APIs behind internal and customer-facing platforms.

You'll work in C# and .NET, design RESTful APIs to OpenAPI standards, own architecture, code quality, and mentor growing engineers. This hands-on role offers real ownership and collaboration with internal teams and external partners as the platform modernizes.