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Mid Level Frontend Developer Jobs in Addison, IL

The Timberline Group

C#/.NET Developer

Chicago, IL · On-site

$85 - $110/hr

... mid-level C#/.NET Developer to join our team Responsibilities/Skills: * C#/.NET development experience * ASP.NET , WebForms framework, javascript, jQuery development experience (strong front end ...

The Timberline Group, LLC

C#/.NET Developer

Chicago, IL

$49.75 - $65.75/hr

... mid-level C#/.NET Developer to join our team Responsibilities/Skills: * C#/.NET development experience * ASP.NET, WebForms framework, javascript, jQuery development experience (strong front end ...

The Timberline Group

C#/.NET Developer

Chicago, IL · On-site +1

$49.75 - $65.75/hr

... mid-level C#/.NET Developer to join our team Responsibilities/Skills: * C#/.NET development experience * ASP.NET, WebForms framework, javascript, jQuery development experience (strong front end ...

Sargent & Lundy

Civil Engineer - Mid-Level

Chicago, IL · On-site

$69K - $99K/yr

As a member of a multi-disciplined engineering and design team, you will work on a wide range of power plant projects and perform civil site development work including creating calculations, designs ...

Sargent Lundy

Civil Engineer - Mid-Level

Chicago, IL · On-site

$69.30 - $99.64/hr

As a member of a multi-disciplined engineering and design team, you will work on a wide range of power plant projects and perform civil site development work including creating calculations, designs ...

Sargent & Lundy

Civil Engineer - Mid-Level

Chicago, IL · Hybrid

$69K - $99K/yr

As a member of a multi-disciplined engineering and design team, you will work on a wide range of power plant projects and perform civil site development work including creating calculations, designs ...

Sargent Lundy

Mid-Level Structural Engineer

Chicago, IL · On-site

$85 - $129/hr

Perform structural engineering reviews * Prepare structural design specifications * Advise power project developers to support new utility-scale solar, wind, battery energy storage, thermal, and ...

Sargent & Lundy

Mid-Level Civil Engineer

Chicago, IL · On-site

$84K - $129K/yr

This position will require you to perform civil engineering reviews and analyses to understand power projects and distill technical expertise into actionable information that project stakeholders ...

Sargent Lundy

Mid-Level Geotechnical Engineer

Chicago, IL · On-site

$84.76 - $129.50/hr

These engineering services include but are not limited to earth retention systems, deep and shallow foundation design, dam stability analyses and inspections, in‑situ instrumentation and monitoring ...

Sargent & Lundy

Mid-Level Electrical Engineer

Chicago, IL · On-site

$74K - $113K/yr

A BS in Electrical Engineering degree from an ABET-accredited engineering program is required and an emphasis in power systems is preferred. * 3 or more years of experience in power plant or ...

Sargent & Lundy

Civil Engineer - Mid-Level

Chicago, IL · Hybrid

$69K - $99K/yr

As a member of a multi-disciplined engineering and design team, you will work on a wide range of power plant projects and perform civil site development work including creating calculations, designs ...

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All JobsMid Level Frontend Developer JobsMid Level Frontend Developer Jobs in Addison, IL

Mid Level Frontend Developer information

See Addison, IL salary details

$42.6K

$110.6K

$155.8K

How much do mid level frontend developer jobs pay per year?

As of Sep 2, 2026, the average yearly pay for mid level frontend developer in Addison, IL is $110,619.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,200.00 and $121,200.00 per year, depending on experience, location, and employer.

What is a mid level frontend developer?

Mid Level Frontend Developers are professionals with a few years of experience building and maintaining the user-facing parts of websites or web applications. They are proficient in HTML, CSS, and JavaScript, and often work with frameworks like React, Angular, or Vue.js. Mid level developers are capable of taking on more complex features and tasks independently, collaborating with designers and backend developers, and contributing to code reviews and project planning. They bridge the gap between junior and senior roles by demonstrating problem-solving skills, code quality, and a good understanding of best practices.

What skills and qualifications are needed to thrive as a mid level frontend developer?

To thrive as a Mid Level Frontend Developer, you need strong proficiency in HTML, CSS, JavaScript, and modern frontend frameworks like React or Angular, along with a relevant degree or equivalent experience. Familiarity with version control systems (such as Git), build tools, and testing frameworks is typically required. Effective problem-solving, attention to detail, and clear communication are essential soft skills for collaborating with designers and backend developers. These skills ensure the delivery of high-quality, user-friendly web applications that meet both technical and business requirements.

What are common challenges a mid level frontend developer faces when integrating with backend services, and how can these be managed?

Mid Level Frontend Developers often encounter challenges such as handling inconsistent API responses, managing asynchronous data flows, and ensuring seamless communication between the frontend and backend. To address these issues, it's important to collaborate closely with backend developers, maintain clear API documentation, and use tools like Postman or Swagger for testing. Additionally, implementing robust error handling and utilizing state management libraries can help ensure a smooth user experience and efficient debugging.

Are mid level front end developers still in demand?

Mid level front end developers are currently in strong demand due to ongoing digital transformation and the need for user-friendly interfaces. Skills in JavaScript frameworks like React or Angular, along with knowledge of HTML and CSS, remain highly valued by employers across various industries.

What are the most commonly searched types of Frontend Developer jobs in Addison, IL?

The most popular types of Frontend Developer jobs in Addison, IL are:

What cities near Addison, IL are hiring for Mid Level Frontend Developer jobs?

Cities near Addison, IL with the most Mid Level Frontend Developer job openings:

Mid Level Frontend Developer jobs near you
Infographic showing various Mid Level Frontend Developer job openings in Addison, IL as of August 2026, with employment types broken down into 73% Full Time, 18% Part Time, 1% Temporary, and 8% Contract. Highlights an 90% Physical, 5% Hybrid, and 5% Remote job distribution, with an average salary of $110,619 per year, or $53.2 per hour.

C#/.NET Developer

The Timberline Group

Chicago, IL • On-site

$85 - $110/hr

Other

Medical, Dental, Vision, PTO

Re-posted 23 days ago

Job description

We are open to remote 100%, but would look at some type of in person onboarding (1 week in Chicago – Client pays expense) to help facilitate the individual's ability to get ramped up faster.
The Resource Skill Set for a we are looking for is a mid-level C#/.NET Developer to join our team
Responsibilities/Skills:

  • C#/.NET development experience
  • ASP.NET , WebForms framework, javascript, jQuery development experience (strong front end skills are required)
  • Experience with Microsoft SQL Server development and Entity Framework
  • Experience with platforms on Microsoft Azure and and the latest in .NET frameworks
  • Solid foundation of HTML, CSS, JavaScript, HTTP, Web and Restful
  • Working in the DevOps for sprints and user stories
  • Experience performing code reviews and ensuring code quality standards
  • Experience working with third-party API’s
  • Experience with best-practice API design
  • Experience with unit testing
  • Experience developing in an Agile methodology
  • Experience with Git for source code management
  • Excellent analytical and troubleshooting skills
  • Ability to translate intricate business objectives and processes into technical solutions
  • Ability to communicate effectively in non-technical terms with customers, management, and investors
  • Have a breadth and depth of experience in database design, performance optimization, application development, security & maintenance

Background/Previous Experiences:
  • Minimum 3 year hands-on development experience in C#.NET, ASP.NET MVC, & MS SQL (incl., stored procedures, functions, etc.)
  • Adept in front-end technologies including, JavaScript, jQuery &/or modern JS Frameworks (e.g., React, Angular), CSS &/or Bootstrap
  • Candidates must have permanent authorization to work in the USA for any employer
What can we offer?
  • 100% premium-paid medical insurance for employee-only-coverage
  • 100% premium-paid dental insurance for employee-only-coverage
  • 100% premium-paid vision insurancefor employee-only-coverage
  • Premium assistance for dependent medical/dental/vision insurance
    • Paid Time Off (PTO)
  • Paid Holidays
  • Educational assistance, some certifications and professional memberships paid
  • Professional Referral Program
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