Senior .NET Lead: Cloud APIs & Modernization

Tech Mirrors; Minnesota; Hybrid; USD 165,312 - 275,520; Part time

Job summary

Tech Mirrors in Minnesota is seeking a Lead .NET Software Engineer to modernize and scale a mission-critical Student Management Platform. This role blends hands-on backend work, frontend development, cloud design, and technical leadership.

You will design scalable RESTful APIs, modernize legacy .NET apps, optimize SQL Server/Azure SQL, build UI with Svelte or React, and shepherd CI/CD and DevOps across a multi-cloud environment.

Qualifications

• Extensive experience designing and building scalable APIs.
• Track record of leading engineering teams and reviews.
• Experience with cloud platforms (Azure, AWS).
• Strong knowledge of frontend technologies (JS/HTML/CSS).

Responsibilities

• Design, build, and maintain scalable RESTful APIs and distributed services using .NET/C#.
• Modernize legacy .NET applications and improve scalability, reliability, and performance.
• Design and optimize SQL Server / Azure SQL databases, including data modeling and performance tuning.
• Develop responsive UI components using Svelte, React, or similar modern frontend frameworks.
• Work with Azure cloud services and AWS integrations in a multi‑cloud environment.
• Contribute to CI/CD, DevOps initiatives, deployment automation, and cloud‑native solutions.
• Participate in distributed systems, event‑driven architecture, monitoring, and observability.
• Lead code reviews, mentoring, technical design discussions, and engineering best practices.
• Collaborate with Product, QA, UX, and DevOps teams to deliver scalable solutions.
• Write automated tests including unit, integration, and end‑to‑end testing.
• Leverage AI‑assisted development tools for coding, debugging, testing, and documentation.

Skills

C# / .NET

Web APIs

SQL Server

Azure

Frontend: JavaScript/HTML/CSS

Svelte

React

Distributed systems

API architecture

CI/CD

DevOps

Leadership

Legacy modernization

Testing (unit/integration)

Cloud: AWS

Tools

Docker

Kubernetes

Terraform

Job description

Tech Mirrors in Minnesota is seeking a Lead .NET Software Engineer to modernize and scale a mission-critical Student Management Platform. This role blends hands-on backend work, frontend development, cloud design, and technical leadership.

You will design scalable RESTful APIs, modernize legacy .NET apps, optimize SQL Server/Azure SQL, build UI with Svelte or React, and shepherd CI/CD and DevOps across a multi-cloud environment.