Senior .NET Applications Engineer

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

Job summary

Machine Learning Technologies, LLC in Lisle, Illinois seeks a hands-on Senior .NET Application Developer to support and enhance enterprise console and web applications. You will handle maintenance, production support, release management, hosting, certificates, and customer collaboration.

The role requires strong troubleshooting, ownership, and the ability to independently manage assigned support and enhancement activities while coordinating with technical leads, developers, and stakeholders.

Qualifications

• Bachelor’s degree in computer science, IT, or related field or equivalent experience.
• 5–8 years of software development, maintenance, and production support.
• Proficiency with React, C#, MVC, .NET Core, Web APIs, and SQL Server.
• Ability to independently configure, deploy, and troubleshoot React, MVC, .NET Core, and Web API apps.
• Experience debugging, root-cause analysis, and resolving complex application issues.
• Experience with REST APIs, Postman, and testing.
• Familiarity with JSON and XML integration and troubleshooting.
• Experience with Azure DevOps repositories, pipelines, and deployments.
• Experience hosting apps on IIS and Windows Server.
• Production-support experience and on-call readiness.
• Release management, change tickets, and deployments.

Responsibilities

• Maintain and enhance enterprise console and web applications.
• Set up, configure, deploy, and troubleshoot React, MVC, .NET Core, and Web API apps across environments.
• Support the Angular application as needed.
• Perform code debugging and root-cause analysis for issues.
• Implement fixes, improvements, and customer-requested changes.
• Collaborate with customers to gather requirements and provide updates.
• Review Azure DevOps PRs, merges, builds, and deployments.
• Create and manage user stories, tasks, bugs, and support items.
• Coordinate database backups, deployments, and rollback scripts.
• Provide on-call production support and incident response.
• Analyze logs from application, server, database, and batch jobs.

Skills

React

C#

MVC

.NET Core

Web APIs

SQL Server

Azure DevOps

IIS

Windows Server

REST APIs

Postman

JSON

XML

CI/CD

Angular

Education

Bachelor’s degree in computer science

Job description

Machine Learning Technologies, LLC in Lisle, Illinois seeks a hands-on Senior .NET Application Developer to support and enhance enterprise console and web applications. You will handle maintenance, production support, release management, hosting, certificates, and customer collaboration.

The role requires strong troubleshooting, ownership, and the ability to independently manage assigned support and enhancement activities while coordinating with technical leads, developers, and stakeholders.