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Mid Level Dot Net Developer Jobs in Illinois (NOW HIRING)

Ritchie Bros.

Software Engineer

Westchester, IL · On-site

Software Engineer II (Mid-Level) - .NET Backend / Microservices (Azure) + React/Vue What You'll Do (Responsibilities) * Build and maintain backend services using C# and modern .NET (.NET 6/8; moving ...

Capgemini

Lead .Net Developer

Chicago, IL · On-site

$106 - $145/hr

Hands-on experience in the full SDLC, building enterprise-level web and desktop applications.Strong ... NET MVC and .NET Core, with deployment experience on IIS.Proficient in source control tools ...

3B Staffing LLC

Senior .Net Developer

Chicago, IL · On-site

$56.75 - $72/hr

You will be relied upon to help take this team to the next level from a technological standpoint ... NET Framework, Microsoft NET Core, SQL, NoSQL and Design Patterns * Excellent knowledge of Object ...

New

3B Staffing LLC

Senior .Net Developer

Chicago, IL · On-site

$56.75 - $72/hr

You will be relied upon to help take this team to the next level from a technological standpoint ... NET Framework, Microsoft NET Core, SQL, NoSQL and Design Patterns * Excellent knowledge of Object ...

New

Arka Infotech Inc

Lead .Net Developer

Effingham, IL · On-site

$54.25 - $71/hr

This application aims at managing users at Enterprise, Practice and Location level. To develop ... NET aASP.NET MVC, WEBAPI, AngularJS , Azure 2. JS a AngularJS 3. UI Unit test using Jasmine 4. C# ...

United Airlines

Lead .Net Developer

Chicago, IL · Hybrid

$119K - $150K/yr

Hands-on experience in the full SDLC, building enterprise-level web and desktop applications ... NET MVC and .NET Core, with deployment experience on IIS. Proficient in source control tools ...

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Mid Level Dot Net Developer information

What is a mid level Dot Net developer?

Mid level Dot Net Developers are software professionals who have a few years of experience working with the .NET framework to build applications, websites, and services. They possess a solid understanding of programming languages like C# or VB.NET, and are familiar with database integration, API development, and debugging. Typically, they can work independently on moderately complex tasks and collaborate with senior developers on larger projects. Their responsibilities often include writing clean code, testing applications, and maintaining existing software.

What are the key skills and qualifications needed to thrive as a mid level Dot Net developer?

To thrive as a Mid Level Dot Net Developer, you need solid programming skills in C#, ASP.NET, and a relevant bachelor's degree in computer science or a related field. Familiarity with frameworks like .NET Core, Entity Framework, and experience using version control systems such as Git are typically required, and certifications like Microsoft Certified: .NET Developer can be advantageous. Strong problem-solving abilities, effective communication, and teamwork make candidates stand out in collaborative development environments. These skills and qualifications are crucial for building robust, scalable applications and ensuring efficient project delivery.

What are some typical challenges mid level Dot Net developers face when working on large-scale projects?

Mid Level Dot Net Developers often encounter challenges such as integrating new features into legacy systems, ensuring code quality while meeting tight deadlines, and keeping up with evolving .NET frameworks and best practices. Collaboration with cross-functional teams—like QA, DevOps, and UI/UX designers—can also present coordination hurdles, especially when requirements change rapidly. Proactively communicating and seeking feedback, along with continuous learning, are key to overcoming these challenges and advancing in this role.

What are the most commonly searched types of Dot Net Developer jobs in Illinois?

The most popular types of Dot Net Developer jobs in Illinois are:

Infographic showing various Mid Level Dot Net Developer job openings in Illinois as of August 2026, with employment types broken down into 100% Full Time. Highlights an 50% In-person, and 50% Remote job distribution.

Software Engineer

Ritchie Bros.

Westchester, IL • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 15 days ago

Key responsibilities

  • Build and maintain backend services using C# and modern .NET, including microservices migration and serverless components on Azure.

  • Develop and integrate RESTful APIs, implement data access patterns with Cosmos DB, Azure Blob Storage, and SQL Server, and collaborate with frontend teams on UI features.

  • Write unit tests, participate in code reviews, and follow engineering standards to ensure code quality and security.

Ritchie Bros. Auctioneers rating

7.5

Company rating: 7.5 out of 10

Based on 26 frontline employees who took The Breakroom Quiz

5th of 19 rated auctioneers

Job description

Software Engineer II (Mid-Level) - .NET Backend / Microservices (Azure) + React/Vue

What You'll Do (Responsibilities)

  • Build and maintain backend services using C# and modern .NET (.NET 6/8; moving toward .NET 10)
  • Contribute to microservices-based systems, including helping with incremental migration from monolith to microservices
  • Develop and maintain serverless components using Azure Function Apps
  • Implement data access patterns using Cosmos DB, Azure Blob Storage, and SQL Server
  • Build and integrate RESTful APIs used by web applications
  • Implement secure authentication/authorization with SSO using Microsoft Entra ID (OAuth2/JWT concepts) 
  • Collaborate with frontend teams and contribute to UI code in React and/or Vue.js (feature work, API integration, debugging, performance fixes)
  • Write unit tests and help improve test coverage and overall code quality 
  • Participate in code reviews, follow engineering standards, and use GitHub + GitHub Copilot effectively (with good judgment and review discipline

Required Qualifications

  • 3-6 years professional software engineering experience (or equivalent)
  • Strong experience with C#, .NET Core / modern .NET, and building backend APIs 
  • Practical experience (project/production) with microservices and RESTful web services
  • Hands-on experience with Azure, including Azure Functions and at least one of: App Services / cloud hosting / Azure-native integrations 
  • Experience with SQL Server and writing/debugging performant 
  • Working knowledge of authentication concepts (OAuth2, JWT) and SSO integration (preferably Entra ID) 
  • Frontend experience required: hands-on work with React and/or Vue.js (JavaScript/TypeScript, component-based UI, consuming REST APIs) 
  • Experience writing unit tests and contributing to a quality-focused engineering culture

Preferred / Nice to Have

  • Experience helping modernize systems (e.g., monolith microservices)
  • Experience with Cosmos DB and/or Blob Storage in production workloads
  • Familiarity with CI/CD and automated testing practices
  • Mobile app development experience (or supporting mobile backends
  • Exposure to both React and Vue (not just one)

IAA Holdings, LLC (IAA)


IAA Holdings, LLC (IAA), a Ritchie Bros. Auctioneers company (NYSE: RBA) and (TSX: RBA), is a trusted global marketplace for insights, services, and transaction solutions for commercial assets and vehicles. Leveraging leading-edge technology and focusing on innovation, IAA's unique platform facilitates the marketing and sale of total-loss, damaged and low-value vehicles. IAA serves a global buyer base - located throughout over 170 countries - and a full spectrum of sellers, including insurers, dealerships, fleet lease and rental car companies, and charitable organizations. Buyers have access to multiple digital bidding and buying channels, innovative vehicle merchandising, and efficient evaluation services, enhancing the overall purchasing experience. IAA offers sellers a comprehensive suite of services aimed at maximizing vehicle value, reducing administrative costs, shortening selling cycle time and delivering the highest economic returns.

RB Global full-time employees are offered medical, dental, vision, and basic life insurances. Employees are able to enroll in our company's 401k plan and RB Global will match 100% for the first 4% contributed.  Employees will also receive 15 days of PTO each year.


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