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Full Stack Developer Startup Jobs in Illinois (NOW HIRING)

Agile Defense

IL · On-site

$110K - $150K/yr

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+ We are ...

Huntington

Senior Full Stack Developer

Chicago, IL · On-site +1

$70K - $140K/yr

Senior Full Stack Developer - In this senior role, the successful candidate will Design, Develop, Integrate, and Support Process Automation API development. Duties and Responsibilities: Architect ...

Agile Defense

IL · On-site

$110K - $150K/yr

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

Huntington

Senior Full Stack Developer

Chicago, IL · On-site +1

$70K - $140K/yr

Senior Full Stack Developer - In this senior role, the successful candidate will Design, Develop, Integrate, and Support Process Automation API development. Duties and Responsibilities: * Architect ...

Huntington

Senior Full Stack Developer

Chicago, IL · On-site +1

$70K - $140K/yr

Senior Full Stack Developer - In this senior role, the successful candidate will Design, Develop, Integrate, and Support Process Automation API development. Duties and Responsibilities: * Architect ...

PeopleVeda

Full Stack Developer

Libertyville, IL · On-site

They have immediate need for two Fullstack Developer experienced in NodeJS, ReactJS and Redux. * Design, develop, test and debug applications and systems of varying degrees of complexity * Develop ...

Nadia Care

Senior Full-Stack Engineer

Chicago, IL · On-site

$145K - $160K/yr

Required Qualifications * 5+ years of experience as a full-stack engineer, ideally within a early stage startup. * Expert-level skills in Python, SQL, Typescript/Javascript, and CSS. * Deep ...

Responsiv

Full Stack Engineer

Chicago, IL · On-site

Proven senior experience as a Full Stack Developer or similar using C#, React and Python ... Demonstrated ability to work in a fast-paced startup environment, with a mindset geared towards ...

PeopleVeda

Full Stack Developer

Libertyville, IL · On-site

They have immediate need for two Fullstack Developer experienced in NodeJS, ReactJS and Redux. * Design, develop, test and debug applications and systems of varying degrees of complexity * Develop ...

DataDelivers LLC

Full Stack Engineer

Schaumburg, IL · On-site

$115K - $130K/yr

Full Stack Engineer Product Strategy & Technology Team (PST) Reports to: Director of Product Development. Location: Schaumburg IL Hybrid schedule (in office Monday, Tuesday, Thursday). The Full Stack ...

DataDelivers LLC

Full Stack Engineer

Schaumburg, IL · On-site

$115K - $130K/yr

Full Stack Engineer Product Strategy & Technology Team (PST) Reports to: Director of Product Development. Location: Schaumburg IL Hybrid schedule (in office Monday, Tuesday, Thursday). The Full Stack ...

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All JobsFull Stack Developer Startup JobsFull Stack Developer Startup Jobs in Illinois

Full Stack Developer Startup information

What is the difference between Full Stack Developer Startup vs Front End Developer?

AspectFull Stack Developer StartupFront End Developer
Required SkillsProficiency in both front-end and back-end technologies, databases, and server managementSpecialized in client-side technologies like HTML, CSS, JavaScript, and frameworks like React or Angular
Work EnvironmentFast-paced startup setting, often wearing multiple hats, involved in full project lifecyclePrimarily focused on designing and implementing user interfaces and user experience
Common UsageUsed in startups needing versatile developers capable of handling entire applicationsUsed in teams focusing on UI/UX and front-end development within startups or larger companies

In summary, a Full Stack Developer Startup has a broader skill set covering both front-end and back-end development, suitable for dynamic startup environments. A Front End Developer specializes in creating engaging user interfaces, often working within larger teams or specific projects. The choice depends on the scope of work and technical expertise required.

What are popular job titles related to Full Stack Developer Startup jobs in Illinois? For Full Stack Developer Startup jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Full Stack Developer Startup jobs in Illinois look for? The top searched job categories for Full Stack Developer Startup jobs in Illinois are:
What cities in Illinois are hiring for Full Stack Developer Startup jobs? Cities in Illinois with the most Full Stack Developer Startup job openings:
Full Stack Developer Startup jobs near you
Infographic showing various Full Stack Developer Startup job openings in Illinois as of July 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 100% In-person job distribution.
Full Stack Developer (Frontend Emphasis)

Full Stack Developer (Frontend Emphasis)

Agile Defense

IL • On-site

$110K - $150K/yr

Other

Medical, Life, Retirement, PTO

Re-posted yesterday

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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