Senior .NET API Developer (Microservices & Security)

Ethereum Technologies LLC; Houston (TX); On-site; USD 87,000 - 117,000; Full time

Job summary

Ethereum Technologies seeks a Senior .NET Developer in Houston, TX to design scalable RESTful APIs and microservices using C# and .NET Core. You will own the API lifecycle, implement OAuth 2.0/OIDC, JWT, and RBAC with Microsoft Entra ID, and collaborate in an Agile team.

Responsibilities include data modeling, SQL optimization, and distributed service integration, with tools like Azure DevOps and Jira for CI/CD and delivery management. This is an 8-month contract with extension potential.

Qualifications

• Design and develop RESTful Web APIs and microservices using C#, .NET/.NET Core, ASP.NET Core Web API, and ASP.NET MVC Core.
• Own API lifecycle from design to deployment including API design, testing, and versioning, with Apigee for API management.
• Implement authentication/authorization with OAuth 2.0, OIDC, JWT, RBAC and Microsoft Entra ID.
• Demonstrate microservices experience with service decomposition, reusable API design, logging, resiliency, and distributed integration.
• Work with relational databases: data modeling, SQL, and integration with .NET APIs.
• Collaborate in Agile/Scrum teams using Azure DevOps and Jira for CI/CD and delivery management.

Responsibilities

• Design and implement RESTful APIs and microservices with strong security and scalability.
• Own API lifecycle end-to-end from design through deployment and support.
• Implement OAuth 2.0, OIDC, JWT and enterprise identity for API authentication/authorization.
• Decompose monoliths into microservices, ensure robust logging and error handling.
• Model data, write optimized SQL, and connect databases to .NET APIs.
• Participate in sprint planning, design reviews, and code reviews in an Agile environment.

Skills

C#/.NET

ASP.NET Core Web API

ASP.NET MVC Core

Tools

Azure DevOps

Jira

Job description

Ethereum Technologies seeks a Senior .NET Developer in Houston, TX to design scalable RESTful APIs and microservices using C# and .NET Core. You will own the API lifecycle, implement OAuth 2.0/OIDC, JWT, and RBAC with Microsoft Entra ID, and collaborate in an Agile team.

Responsibilities include data modeling, SQL optimization, and distributed service integration, with tools like Azure DevOps and Jira for CI/CD and delivery management. This is an 8-month contract with extension potential.