Senior Software Engineer (.NET/C#/Azure)

About the role

OnTrac is looking for a senior software engineer to help modernize a large wholesale digital‑marketplace auction platform. The role is fully remote within the United States and involves building core backend services on .NET Core and Azure.

Key responsibilities

• Implement core features such as inventory management, financial transactions, and customer management.
• Collaborate with product managers and multiple development teams to translate business requirements into scalable solutions.
• Design efficient data models, create RESTful APIs, and integrate with existing systems and third‑party services.
• Conduct code reviews, troubleshoot performance issues, and contribute to technical documentation.

Required profile

• Bachelor’s degree in Computer Science or related field.
• 7+ years of professional C# development experience with strong OOP skills.
• Extensive experience with .NET Core, Azure services, and Azure DevOps CI/CD pipelines.
• Proficiency in designing and building RESTful APIs and working with relational and NoSQL databases.

Required skills

• .NET Core
• C#
• Microsoft Azure (core services, infrastructure)
• Azure DevOps
• React (front‑end framework)
• SQL Server, PostgreSQL, NoSQL databases
• Entity Framework
• RESTful API development
• CI/CD pipeline creation and optimization