Senior .NET Web Apps Engineer | React, SQL & Azure DevOps

Ethereum Technologies; Lisle (IL); On-site; USD 110,000 - 160,000; Full time

Job summary

Ethereum Technologies in Lisle, IL seeks a hands-on Senior .NET Application Developer with 5–8 years of experience to support enterprise console and web applications. You will handle maintenance, enhancements, production support, and release management across Dev, QA, and Production environments.

The ideal candidate will troubleshoot, implement fixes, and collaborate with stakeholders, technical leads, and support teams, including L1 support and CSMs, to deliver reliable, scalable solutions.

Qualifications

• Bachelor’s degree in computer science, IT, or related field, or equivalent.
• 5–8 years of experience in software development, application maintenance, and production support.
• Strong hands-on experience with React, C#, MVC, .NET Core, Web APIs, and SQL Server.
• Ability to independently set up, configure, deploy, and troubleshoot React, MVC, .NET Core, and Web API applications.
• Experience with REST APIs using Postman.
• Experience hosting and supporting web applications on IIS and Windows Server.
• Experience with Azure DevOps repositories, pull requests, pipelines, and deployments.
• Experience in release management, change tickets, and production deployments.

Responsibilities

• Maintain, troubleshoot, and enhance applications using React, C#, MVC, .NET Core, Web APIs, and SQL Server.
• Independently set up, configure, deploy, and troubleshoot React, MVC, .NET Core, and Web API applications across Development, QA, and Production.
• Support the Angular application as required.
• Perform code-level debugging and root-cause analysis for application, API, database, configuration, IIS, and deployment issues, and implement fixes.
• Collaborate with customers to understand requirements, investigate issues, and provide timely updates.
• Review Azure DevOps pull requests and manage code merges, tagging, builds, and deployments.
• Create and manage Azure DevOps user stories, tasks, bugs, and support work items.
• Perform releases across Development, QA, and Production environments.
• Configure IIS, host web applications, and manage server configurations.
• Prepare database deployment, validation, and rollback scripts, and coordinate backups.
• Analyze logs and troubleshoot SQL queries and stored procedures.
• Provide on-call and after-hours production support when required.

Skills

React

C#

MVC

.NET Core

Web APIs

SQL Server

Azure DevOps

IIS/Windows Server

Education

Bachelor’s degree in computer science or related field

Tools

Angular

Postman

Job description

Ethereum Technologies in Lisle, IL seeks a hands-on Senior .NET Application Developer with 5–8 years of experience to support enterprise console and web applications. You will handle maintenance, enhancements, production support, and release management across Dev, QA, and Production environments.

The ideal candidate will troubleshoot, implement fixes, and collaborate with stakeholders, technical leads, and support teams, including L1 support and CSMs, to deliver reliable, scalable solutions.