.Net Developer

Ethereum Technologies; Boston (MA); On-site; USD 100,000 - 150,000; Full time

Job summary

Ethereum Technologies in Boston is seeking a skilled .NET engineer to design, build, and maintain scalable web applications. You will develop RESTful APIs, implement authentication, and optimize data access with SQL Server and EF Core, while collaborating with front-end teams in Angular or React.

You'll work in an Agile environment, deploy on Microsoft Azure, and contribute to SDLC activities, reviews, and production support.

Qualifications

• Experience designing and maintaining scalable web apps with C#, .NET Framework/Core, and ASP.NET Core.
• Developed RESTful APIs and backend services using ASP.NET Core Web API.
• Implemented business logic with OOP and design patterns.
• SQL Server objects, stored procedures, views, and complex queries.
• EF/EF Core for data access and ORM operations.
• LINQ-based data retrieval and manipulation.
• Reusable components, services, and middleware for maintainability.
• Integrations via REST APIs, JSON, and SOAP.
• Authentication/authorization using JWT, OAuth 2.0, and RBAC.
• Microservices architecture and frontend integration with Angular/React.
• Performance optimization of SQL queries and API responses.
• Logging, exception handling, and monitoring; unit/integration tests (xUnit/NUnit/Moq).
• Azure-based deployment (App Services, Functions, Azure SQL).
• Git/GitHub and Azure DevOps; participation in SDLC and code reviews.
• Agile/Scrum collaboration with BAs, QA, and dev teams.

Responsibilities

• Designed, developed, and maintained scalable web applications using C#, .NET Framework, .NET Core, and ASP.NET Core.
• Developed RESTful Web APIs to support enterprise integration.
• Implemented authentication and authorization using ASP.NET Identity, JWT, OAuth 2.0, and RBAC.
• Developed database objects, procedures, views, and complex SQL queries in SQL Server.
• Used EF/EF Core for data access and ORM operations.
• Integrated frontend apps built with Angular or React with backend .NET APIs.
• Optimized performance of SQL queries and backend processing.
• Implemented testing, logging, and monitoring; deployed to Azure.
• Participated in code reviews, defect resolution, and production support.
• Collaborated in an Agile/Scrum environment and across teams during SDLC.

Skills

C#

ASP.NET Core

.NET Framework

REST APIs

OOP

Design patterns

LINQ

Azure

Entity Framework

SQL Server

Git/Azure DevOps

xUnit/NUnit/Moq

Tools

ASP.NET Core

.NET Core

EF Core

Azure App Services

Azure Functions

Azure SQL Database

SQL Server

Angular/React

Git

Azure DevOps

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Roles and Responsibilities

Designed, developed, and maintained scalable web applications using C#, .NET Framework, .NET Core, and ASP.NET Core.

Developed RESTful Web APIs and backend services using ASP.NET Core Web API to support enterprise application integration.

Implemented business logic and application functionality using C#, Object-Oriented Programming (OOP), and design patterns.

Developed database objects, stored procedures, views, functions, and complex SQL queries using Microsoft SQL Server.

Used Entity Framework and Entity Framework Core for database connectivity, data access, and ORM operations.

Implemented LINQ queries for efficient data retrieval, filtering, and manipulation.

Designed and developed reusable components, services, and middleware to improve application maintainability.

Integrated third-party applications and external systems using REST APIs, JSON, and SOAP services.

Implemented authentication and authorization using ASP.NET Identity, JWT, OAuth 2.0, and role-based access control.

Developed microservices-based applications to improve scalability, flexibility, and application performance.

Integrated frontend applications built with Angular or React with backend .NET APIs.

Optimized application performance by improving SQL queries, API response times, and backend processing.

Implemented exception handling, logging, debugging, and application monitoring to ensure system reliability.

Developed unit and integration tests using xUnit, NUnit, and Moq.

Deployed and maintained applications using Microsoft Azure services such as Azure App Services, Azure Functions, and Azure SQL Database.

Used Git, GitHub, and Azure DevOps for source control, CI/CD pipelines, and application deployments.

Participated in code reviews, technical discussions, defect resolution, and production support.

Collaborated with business analysts, QA engineers, and development teams in an Agile/Scrum environment.

Participated in all phases of the Software Development Life Cycle (SDLC), including requirement analysis, design, development, testing, deployment, and maintenance.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.