Senior Software Engineer / Technical Lead (.NET) We are seeking a Senior Software Engineer / Technical Lead with strong backend expertise and solid frontend experience to help build and scale a proprietary platform. This role is ideal for an engineer who enjoys hands-on development while also leading architecture decisions, mentoring engineers, conducting code reviews, and driving technical excellence. This is for a client based in Minneapolis. Candidates local to Minneapolis preferred, but remote is fine (Midwest and/or central time zone). Contract to hire This is a contract-to-hire opportunity with the potential to convert to a full-time employee based on performance and business needs. This position is primarily backend-focused (approximately 70%) with frontend responsibilities (approximately 30%).

Responsibilities

• Design, build, and maintain scalable RESTful APIs and event-driven services using .NET / C#
• Lead system architecture, scalability, reliability, and performance initiatives
• Design and optimize MSSQL / Azure SQL databases
• Develop frontend features using modern JavaScript frameworks such as Svelte or React
• Conduct code reviews and promote engineering best practices
• Mentor team members and provide technical leadership
• Collaborate with Product, UX, and stakeholders to deliver scalable solutions
• Leverage AI-assisted development tools to improve productivity and code quality

Required Qualifications

• 5+ years of software engineering experience with a strong backend focus
• Strong expertise in .NET / C#, Web APIs, and SQL development
• Experience with cloud platforms (Azure preferred)
• Solid frontend experience with JavaScript frameworks
• Strong understanding of API design, microservices, distributed systems, and software design patterns
• Experience with CI/CD pipelines and Agile development practices
• Proven ability to lead technical initiatives and mentor engineers

Preferred Qualifications

• Experience with Svelte, Docker, Kubernetes, Terraform, or event-driven systems
• Familiarity with Auth0, OAuth, SSO, and DevSecOps practices