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

Agile Defense

IL · On-site

$110K - $150K/yr

Hybrid, Scott AFB, IL Clearance Level: Secret, Must Have Ability to Obtain a Clearance Required Certification(s): Ability to obtain Security+ We are seeking a Senior Full Stack Developer (Frontend ...

Itron, Inc

Full Stack Developer

Chicago, IL

Build and evolve full stack reporting features that are customer centric and aligned to Utilities ... Mentor and collaborate with engineers through reviews, pairing, and knowledge sharing-building a ...

Agile Defense

IL · On-site

$110K - $150K/yr

Hybrid, Scott AFB, IL Clearance Level: Secret, Must Have Ability to Obtain a Clearance Required Certification(s): Ability to obtain Security+ We are seeking a Senior Full Stack Developer (Backend ...

localCLOUT, Inc.

Full Stack Developer

Chicago, IL · On-site

As a Developer who is passionate about coding, you will be part of a small, but powerful and elite ... N stack (MongoDB , Ember.js, Express.js & Node.js) * Experience with API's (Google, others)

localCLOUT, Inc.

Full Stack Developer

Chicago, IL · On-site

As a Developer who is passionate about coding, you will be part of a small, but powerful and elite ... N stack (MongoDB , Ember.js, Express.js & Node.js) * Experience with API's (Google, others)

Northern Trust

Senior Lead Full Stack Developer

Chicago, IL · On-site

$114K - $194K/yr

Role Overview The Senior Lead Full Stack Developer will provide hands-on technical guidance, owning ... Mentor senior and mid-level developers, promoting ownership and continuous improvement. Stakeholder ...

Merican

Full Stack Developer (React + .Net)

Lisle, IL · On-site

Full Stack Developer (React + .Net) Location: Lisle , IL Duration: 6 Months Job Type: Temporary ... level knowledge in SQL, including writing complex queries and stored procedures • Skilled in ...

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Mid Level Full Stack Developer information

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

As of Jun 23, 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 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.

What is L1, L2, L3, and L4 developer?

In the context of a Mid Level Full Stack Developer role, L1, L2, L3, and L4 typically refer to different levels of seniority or expertise within an organization, with L1 being entry-level and L4 indicating a senior or lead position. These levels often correspond to experience, technical skills, and responsibilities, and are used to structure career progression and compensation. Understanding these levels helps in assessing job expectations and growth opportunities in full stack development roles.

What is a mid-level full stack developer?

A mid-level full stack developer is a software professional with experience in both front-end and back-end development, typically possessing 2-5 years of experience. They are proficient in multiple programming languages, frameworks, and tools, and can handle project tasks independently while collaborating with teams. This role often requires knowledge of databases, version control, and deployment processes.

Will Fullstack be replaced by AI?

Full Stack Developers perform tasks that involve coding, designing, and maintaining both frontend and backend systems, which require critical thinking and problem-solving skills. While AI tools can assist with coding and automation, they are unlikely to fully replace the need for human developers who understand project context, user experience, and complex system integration. Continuous learning and adapting to new technologies remain essential in this role.

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.

Is full stack worth it in 2026?

For a Mid Level Full Stack Developer, full stack development remains a valuable skill set due to high demand for versatile developers proficient in both front-end and back-end technologies. Staying current with frameworks like React, Node.js, and cloud platforms can enhance job prospects, as full stack roles often require knowledge of multiple programming languages and tools. The role offers opportunities for growth, but continuous learning is essential to remain competitive in the evolving tech landscape.
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:
What job categories do people searching Mid Level Full Stack Developer jobs in Illinois look for? The top searched job categories for Mid Level Full Stack Developer jobs in Illinois are:
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
Infographic showing various Mid Level Full Stack Developer job openings in Illinois as of June 2026, with employment types broken down into 93% Full Time, 5% Part Time, and 2% Contract. Highlights an 90% Physical, 3% Hybrid, and 7% Remote job distribution, with an average salary of $119,444 per year, or $57.4 per hour.
Full Stack Developer (Frontend Emphasis)

Full Stack Developer (Frontend Emphasis)

Agile Defense

IL • On-site

$110K - $150K/yr

Other

Medical, Life, Retirement, PTO

Posted 9 days ago

Job description

About Agile Defense
At Agile Defense we know that action defines the outcome and new challenges require new solutions. That's why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.
Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility-leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation's vital interests.
Requisition #: 1605
Job Title: Full Stack Developer (Frontend Emphasis)
Location: Hybrid, Scott AFB, IL
Clearance Level: Secret, Must Have Ability to Obtain a Clearance
Required Certification(s): Ability to obtain Security+
Job Description
We are seeking a Senior Full Stack Developer (Frontend Emphasis, React.js) to build and sustain a mission critical command and control system for the Mobility Air Force. Your work will focus on developing modern single page applications using React.js and TypeScript, improving the user experience, and ensuring seamless integration with secure backend APIs. You will contribute across the stack, but your specialization will be front end architecture, UI performance, and maintainable component development.
You will collaborate closely with backend developers, guide UI design decisions, and mentor junior engineers within an Agile development environment.
What you will do:
  • Design, implement, test, and deploy single page applications built with React.js and TypeScript.
  • Participate in front end architecture decisions, including state management, component structure, routing, and build configuration.
  • Develop reusable UI components, forms, and interactive views aligned with mission workflows.
  • Integrate React applications with Java and .NET backend services and RESTful APIs.
  • Build automated tests for the UI, including unit, integration, and end to end tests.
  • Ensure accessibility, responsiveness, and adherence to modern UI best practices.
  • Optimize performance through code splitting, lazy loading, and efficient rendering strategies.
  • Implement secure front end patterns, including dependency hygiene, API input validation, and token handling.
  • Review and refactor front end code to ensure maintainability and consistent patterns.
  • Mentor team members on React, TypeScript, testing strategies, and SPA architecture.

Education and Background
  • Minimum Experience: 5+ years of professional software development, including substantial front-end experience with React.js.
  • Experience owning front end architecture or major UI components in production SPA applications.
  • Bachelor's degree in Computer Science, Engineering, or related field, or equivalent experience.
  • Ability to obtain or maintain a government security clearance.
  • Prior DoD or federal experience is strongly preferred.

Years of Experience
5 years
Required Skills
  • Strong proficiency with React.js, TypeScript, SPA architecture, and modern JavaScript tooling.
  • Experience with front end state management solutions such as Redux, Zustand, Recoil, or Context APIs.
  • Familiarity with build tools such as Webpack, Vite, Babel, or similar.
  • Experience consuming RESTful APIs and collaborating with backend developers to shape API contracts.
  • Understanding of accessibility and compliance standards common in government systems.
  • Experience deploying front end applications to AWS services such as S3, CloudFront, API Gateway, and Cognito.
  • Strong troubleshooting skills in UI performance, rendering, and cross browser compatibility.
  • Self directed with the ability to own features from concept to production.

Preferred Skills
  • HTML, CSS, JavaScript, and TypeScript.
  • React.js, React Router, and component-based architecture.
  • SPA security patterns for authenticated applications.
  • Modern front end testing frameworks such as Jest, React Testing Library, and Cypress.
  • RESTful API integration patterns.
  • Basic backend development in Java or .NET for full stack feature work.
  • Containerization concepts using Docker.
  • CI/CD practices for building, testing, and deploying front end assets.
  • Agile methodology.

Working Conditions
This position is eligible for remote work in the St. Louis area. However, the position requires a government security clearance, so candidates must be U.S. citizens and eligible for work without a visa sponsorship.
Benefits
In addition, Agile Defense invests in its employees beyond just compensation. Agile's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Learning and Development opportunities as well as other optional benefit elections.
$110,000 - $150,000 a year
Our Core Values
Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.
What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.
  • Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
  • Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated.
  • Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support.
  • Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task.
  • Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges.
  • Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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