Senior .Net Application Developer, Sr. Assoc

Magis Capital Partners LL•Berwyn, PA

About The Position

We are seeking an experienced .NET Senior Developer with a strong focus on backend and full-stack development to help design, build, and maintain modern, scalable applications. The ideal candidate will have deep expertise in .NET technologies, SQL Server, and cloud-based solutions on Azure, along with experience contributing to overall system architecture and performance. This role involves close collaboration with front-end, product, and DevOps teams and serves as a technical leader and mentor for junior developers. The Senior Developer will also contribute to development standards, best practices, and long-term platform evolution across the organization.

Requirements

Strong experience with .NET technologies (C#, ASP.NET Core, Web APIs)
Solid understanding of backend and full-stack architecture, design patterns, and best practices
Strong experience with SQL Server, including schema design, query optimization, and performance tuning
Experience building and consuming RESTful APIs
Experience working with Microsoft Azure services (e.g., App Services, Azure SQL, Storage, DevOps, or similar)
Familiarity with Agile/Scrum development methodologies
Experience with version control systems (Git) and collaborative development workflows
Knowledge of testing frameworks and tools for backend and application-level testing
Strong problem-solving and debugging skills
Excellent communication, documentation, and collaboration skills
Ability to manage multiple priorities in a fast-paced, dynamic environment
Eagerness to stay current with backend, cloud, and full-stack development trends and best practices
Bachelor’s degree in Computer Science or a related field, or equivalent professional experience
5+ years of professional software development experience
3+ years of hands-on experience developing production .NET-based applications
Experience working in enterprise-scale or complex application environments

Nice To Haves

Experience with Angular a plus
Prior experience with cloud-based systems and Azure-hosted solutions is highly desirable
Strong track record of delivering high-quality, maintainable backend or full-stack solutions

Responsibilities

Design, architect, and evolve backend and full-stack applications with a focus on scalability, performance, security, and maintainability
Define and enforce backend and full-stack architectural standards, patterns, and best practices
Collaborate with front-end teams to design clean, efficient APIs (REST/JSON) and integration patterns
Design and optimize data models, database schemas, and data access strategies using SQL Server
Evaluate and recommend new backend, cloud, and platform technologies, frameworks, and tools
Participate in system design discussions to ensure technical feasibility and long-term sustainability
Build, enhance, and maintain backend services and APIs using .NET (e.g., C#, ASP.NET Core)
Develop and maintain full-stack features where needed, collaborating closely with front-end developers
Implement robust business logic, and integrations with internal and external systems
Write clean, well-tested, and well-documented code
Troubleshoot and resolve application issues, performance bottlenecks, and production defects
Participate in code reviews to ensure quality, consistency, and adherence to standards
Work closely with front-end engineers, product managers, and stakeholders to deliver high-quality features
Collaborate with DevOps teams to support CI/CD pipelines, deployments, and cloud infrastructure on Azure
Serve as a technical escalation point for complex backend or system-wide issues
Communicate technical concepts clearly to both technical and non-technical stakeholders
Implement and maintain front-end testing strategies, including unit, integration, and end-to-end testing
Ensure applications meet performance, security, and accessibility standards
Continuously improve application performance, usability, and reliability
Provide guidance and mentorship to junior and mid-level developers
Contribute to team knowledge-sharing, documentation, and continuous improvement initiatives
Provide backup and support for others in the group as necessary