Senior .NET Architect - Enterprise API & Cloud (San Diego)

Ethereum Technologies LLC; San Diego (CA); On-site; USD 97,000 - 138,000; Full time

Job summary

Ethereum Technologies in San Diego, CA seeks an experienced .NET Architect to lead enterprise application architecture, design, and development. Strong hands-on full-stack expertise in C#, .NET Core, ASP.NET MVC, Web API, and modern frontend frameworks is required.

The ideal candidate will architect RESTful APIs, microservices, and enterprise integrations, while guiding teams and ensuring quality through automated testing and performance tuning.

Qualifications

• 10+ years of hands-on full-stack development experience, primarily with .NET technologies.
• 5+ years of experience designing and delivering enterprise-scale applications and solution architectures.
• 8+ years of experience with C#, .NET Core, ASP.NET MVC, Web API, Entity Framework, and modern frontend frameworks such as Angular, React, or Vue.js.
• 5+ years of experience with RESTful APIs, SOAP, microservices, and message queues such as RabbitMQ or Kafka.
• 5+ years of cloud-based application development and deployment experience, with strong preference for AWS.
• Proficiency in SQL Server, MySQL, PostgreSQL, and NoSQL databases.
• Strong knowledge of design patterns, SOLID principles, and software architecture best practices.
• Experience with CI/CD pipelines such as Jenkins, Azure DevOps, or GitHub Actions, and Git version control.
• Experience developing unit and integration tests using NUnit or similar frameworks.
• Knowledge of Docker, Kubernetes, and cloud/on-premises deployments.
• Familiarity with DevOps practices and collaboration with operations teams.
• Strong problem-solving, communication, and technical leadership skills.

Responsibilities

• Lead solution architecture, technical design, and development activities.
• Architect and implement RESTful APIs, microservices, event-driven solutions, and enterprise integrations.
• Develop secure and scalable integration solutions across cloud and on-premises environments.
• Lead database design and optimization using SQL Server, MySQL, PostgreSQL, and NoSQL databases.
• Conduct code reviews and ensure adherence to coding standards and architectural best practices.
• Troubleshoot complex front-end and back-end technical issues.
• Provide technical leadership and mentorship to development teams.
• Ensure software quality through automated testing, unit testing, and performance tuning.
• Collaborate with Agile/Scrum teams and operations teams to deliver scalable solutions.

Skills

C#

.NET Core

ASP.NET MVC

Web API

Angular

React

Vue.js

RESTful APIs

microservices

cloud technologies

AWS

SQL Server

MySQL

PostgreSQL

NoSQL

Docker

Kubernetes

CI/CD

Jenkins

Azure DevOps

GitHub Actions

Git

Unit testing (NUnit)

Tools

Jenkins

Azure DevOps

GitHub Actions

Git

Docker

Kubernetes

NUnit

Job description

Ethereum Technologies in San Diego, CA seeks an experienced .NET Architect to lead enterprise application architecture, design, and development. Strong hands-on full-stack expertise in C#, .NET Core, ASP.NET MVC, Web API, and modern frontend frameworks is required.

The ideal candidate will architect RESTful APIs, microservices, and enterprise integrations, while guiding teams and ensuring quality through automated testing and performance tuning.