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Mid Level Full Stack Developer Jobs in Illinois (NOW HIRING)

UST

Mid-Level Full Stack Developer

Chicago, IL · On-site

They are seeking a talented and versatile Mid-Level Full Stack Developer to develop and maintain robust web applications, create user interfaces, and collaborate with cross-functional teams to ...

Ocra

Full-stack Engineer

Chicago, IL · On-site

$130K - $160K/yr

We're looking for a mid-level full-stack engineer who is energized by working in a small, distributed team where autonomy, curiosity, and adaptability matter more than rigid processes (but we do work ...

Next Step Systems

Full Stack Developer

Chicago, IL · On-site

Full Stack Developer, Chicago, IL Hiring a Full Stack Developer now! Urgent need! Looking for multiple experienced Full Stack Java Developers to work for a renowned global organization.

Leidos

Mid-Level Software Engineer

Venice, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Edwardsville, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Roxana, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Dupo, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Wood River, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

East Saint Louis, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Caseyville, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Glen Carbon, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Maryville, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Hartford, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Leidos

Mid-Level Software Engineer

Belleville, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

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All JobsMid Level Full Stack Developer JobsMid Level Full Stack Developer Jobs in Illinois

Mid Level Full Stack Developer information

See Illinois salary details

$23

$57

$83

How much do mid level full stack developer jobs pay per hour?

As of Jul 14, 2026, the average hourly pay for mid level full stack developer in Illinois is $57.42, according to ZipRecruiter salary data. Most workers in this role earn between $47.74 and $66.15 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive in the Mid Level Full Stack Developer position, and why are they important?

To thrive as a Mid Level Full Stack Developer, you need a solid understanding of front-end and back-end development, proficiency in programming languages like JavaScript, Python, or Java, and experience with frameworks such as React and Node.js. Familiarity with version control systems like Git, cloud platforms (e.g., AWS or Azure), and relevant certifications such as AWS Certified Developer can be advantageous. Strong problem-solving skills, effective communication, and the ability to work collaboratively set outstanding candidates apart. These skills and qualities are essential for building scalable applications and navigating the dynamic requirements of cross-functional development teams.

What engineer makes $500,000 a year?

A mid-level full stack developer typically does not earn $500,000 annually; such high salaries are usually reserved for senior or specialized engineers with extensive experience, rare skills, or leadership roles in high-paying industries like finance or tech. Top-tier software engineers with expertise in cloud computing, machine learning, or executive positions may reach or exceed this level, often supplemented by bonuses and stock options.

What is a Mid Level Full Stack Developer job?

A Mid Level Full Stack Developer is responsible for developing and maintaining both front-end and back-end components of web applications. They have a solid understanding of programming languages, frameworks, databases, and server-side logic. Typically, they collaborate with designers, other developers, and stakeholders to implement features and optimize performance. With a few years of experience, they can work independently on tasks while contributing to project architecture and problem-solving.

Is full-stack dev still in demand?

Full-stack developers remain in high demand due to their versatility in handling both front-end and back-end development. Companies value skills in frameworks like React, Angular, Node.js, and proficiency with databases, making full-stack development a strong career choice in the current tech industry.

What is a mid-level full stack developer?

A mid-level full stack developer is a software professional with several years of experience who can work on both front-end and back-end development. They typically have skills in languages like JavaScript, Python, or Java, and are familiar with frameworks, databases, and version control tools. This role often requires the ability to handle projects independently and collaborate within a development team.

Will Fullstack be replaced by AI?

Full Stack Developers perform tasks that involve designing, coding, and maintaining both front-end and back-end systems, which require problem-solving and adaptability. While AI tools can assist with coding and automation, they are unlikely to fully replace the need for human developers who understand complex systems, user experience, and project requirements. Continuous learning and proficiency in programming languages and frameworks remain essential for full stack roles.

What types of projects and responsibilities can I expect as a Mid Level Full Stack Developer?

As a Mid Level Full Stack Developer, you’ll typically work on both client-facing and server-side components of web applications, collaborating closely with UX/UI designers, backend engineers, and product managers. You may be responsible for creating new features, debugging complex issues, optimizing application performance, and maintaining codebases. It's common to participate in code reviews and Agile sprints, ensuring best practices are followed throughout the development cycle. This role provides exposure to a wide range of technologies and business needs, offering strong opportunities for learning and career advancement as you take on more complex assignments.

What are the most commonly searched types of Full Stack Developer jobs in Illinois? The most popular types of Full Stack Developer jobs in Illinois are:
What are popular job titles related to Mid Level Full Stack Developer jobs in Illinois? For Mid Level Full Stack Developer jobs in Illinois, the most frequently searched job titles are:
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What cities in Illinois are hiring for Mid Level Full Stack Developer jobs? Cities in Illinois with the most Mid Level Full Stack Developer job openings:
Mid Level Full Stack Developer jobs near you
Mid-Level Full Stack Developer

Mid-Level Full Stack Developer

UST

Chicago, IL • On-site

Full-time

Re-posted 22 days ago

UST rating

8.8

Company rating: 8.8 out of 10

Based on 6 frontline employees who took The Breakroom Quiz

33rd of 449 rated business services

Job description

Job Summary:
UST is a mission-driven company that transforms lives through technology. They are seeking a talented and versatile Mid-Level Full Stack Developer to develop and maintain robust web applications, create user interfaces, and collaborate with cross-functional teams to deliver new features.
Responsibilities:
• Develop and maintain robust web applications across the full stack.
• Create responsive and intuitive user interfaces using Angular.js.
• Build and maintain scalable and efficient server-side applications using Python or Java.
• Utilize Amazon Web Services (AWS) to deploy, manage, and scale applications, leveraging core services such as EC2, S3, RDS, Lambda, and more.
• Collaborate with cross-functional teams, including designers, product managers, and other engineers, to define, design, and ship new features.
• Participate in the entire software development lifecycle, from conception to deployment and maintenance.
• Write clean, well-documented, and testable code, and participate in code reviews.
• Troubleshoot, debug, and upgrade existing software to ensure optimal performance.
• Stay up to date with emerging technologies and industry best practices to ensure our tech stack remains modern and effective.
Qualifications:
Required:
• Minimum of 5+ years of professional experience in full stack software development.
• Proven experience developing applications with Angular.js, including knowledge of relevant libraries and frameworks such as: Angular UI Bootstrap, Tailwind, PrimeNG.
• Experience with testing frameworks such as Jasmine and/or Karma.
• Strong proficiency in either Java or Python for backend development.
• For Python, experience with popular frameworks is required, such as: Hands on experience with frameworks like FastAPI, Django or Flask.
• Experience with Python testing frameworks such as Pytest for unit and integration testing.
• In-depth knowledge of core AWS services (e.g., EC2, S3, RDS, IAM, Lambda, API Gateway) and hands-on experience deploying applications in a cloud-native AWS environment.
• Experience with relational and/or NoSQL databases (e.g., MySQL, PostgreSQL, DynamoDB).
• Solid understanding of RESTful APIs, web services, and asynchronous request handling.
• Proficiency with version control systems, specifically Git.
• Experience working in an Agile development environment.
Preferred:
• Familiarity with other modern JavaScript frameworks such as Vue.js.
• Experience with serverless architectures using AWS Lambda.
• Knowledge of CI/CD practices and tools.
Company:
UST is a global digital transformation solutions provider. Founded in 1999, the company is headquartered in Waltham, USA, with a team of 10001+ employees. The company is currently Late Stage.

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