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Jr Application Developer Jobs in Illinois (NOW HIRING)

Understand common Web Application vulnerabilities like SQLi, XSS, CSRF, and HTTP Flooding ... This Federal Strategic Cyber program encompasses technical, engineering, data analytics ...

... services like Application management, Implementation and Infrastructure management. Galaxy i ... This role will involve mentoring a jr developer * App gives Hyatt Guests the ability to register ...

... services like Application management, Implementation and Infrastructure management. Galaxy i ... This role will involve mentoring a jr developer * App gives Hyatt Guests the ability to register ...

Data Analyst II

Chicago, IL · On-site

$71.20 - $124.50/hr

JR-1065035Shirley Ryan AbilityLab is the global leader in physical medicine and rehabilitation for ... Utilizes Application Programming Interfaces (APIs) to interact with and manipulate multiple systems ...

Identify, document, and troubleshoot application and database-related issues (performance, data ... Developers growth. * Present team's work to Business partners and Lead Sr and Jr team members ...

Event Sales Manager

Chicago, IL · On-site

$56 - $70/hr

Kennedy and Dr. Martin Luther King, Jr.Kennedy-King College seeks anEvents Sales Manager ... Directs and oversees the services of campus janitorial, engineering, IT support, and office support ...

EHS Manager

Dixon, IL · On-site

$103.30 - $134.20/hr

JR-26770Donaldson is committed to solving the world's most complex filtration challenges. Together ... Engineering or related field.* Minimum 5 years of progressively increasing environmental, health ...

Jr Application Developer information

See Illinois salary details

$16

$51

$82

How much do jr application developer jobs pay per hour?

As of Sep 3, 2026, the average hourly pay for jr application developer in Illinois is $51.01, according to ZipRecruiter salary data. Most workers in this role earn between $41.01 and $58.70 per hour, depending on experience, location, and employer.

What cities in Illinois are hiring for Jr Application Developer jobs?

Cities in Illinois with the most Jr Application Developer job openings:

Infographic showing various Jr Application Developer job openings in Illinois as of August 2026, with employment types broken down into 81% Full Time, 15% Part Time, and 4% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $106,099 per year, or $51 per hour.

Jr Cyber Penetration Tester

Peraton

Virginia, IL • On-site

$70 - $100/hr

Other

Posted 15 days ago


Peraton rating

8.3

Company rating: 8.3 out of 10

Based on 56 frontline employees who took The Breakroom Quiz

52nd of 226 rated it services


Job description

Required:
  • Bachelor's degree and 2 year of related experience or additional 4 years may be considered in lieu of the degree requirement.
  • Demonstrated basic understanding of networking and security principles.
  • Experience with evaluating system security configurations.
  • Understand common Web Application vulnerabilities like SQLi, XSS, CSRF, and HTTP Flooding.
  • Experience with penetration testing tools such as Metasploit, Burp Suite, Nmap, etc.
  • Fundamentals of network routing & switching and assessing network device configurations.
  • Familiarity in evaluating findings and performing root cause analysis.
  • Demonstrated ability to work alone and/or within a small group.
  • Must possess and maintain ONE of the listed certifications below:
    • CCNA Cyber Ops, CCNA-Security, CEH, CFR, Cloud+, CySA+, GCIA, GCIH, GICSP, or SCYBER
  • U.S. citizenship required.
  • Active Secret security clearance.
Preferred:
  • Active Top Secret or TS/SCI.

Peraton is currently seeking a Jr Cyber Penetration Tester to become part of our Federal Strategic Cyber Group.

Location: Rosslyn, VA. Situational Telework. Must be local to the job site.

This Federal Strategic Cyber program encompasses technical, engineering, data analytics, cyber security, management, operational, logistical and administrative support to aid and advise the Cyber & Technology Security (CTS) Directorate. This includes protecting a global cyber infrastructure comprising networks, systems, information, and mobile devices all while identifying and responding to cyber risks and threats.

In this role, you will:
  • Support the Penetration Testing (Red Cell) Team.
  • Assess the current state of the customer’s system security by identifying all vulnerabilities and security measures.
  • Help customer perform analysis and mitigation of security vulnerabilities.
  • Perform and report on penetration testing of systems, including cloud, to satisfy the NIST 800-53 CA-8 security control and using methodologies that may include, NIST SP 800-115, Penetration Testing Execution Standard (PTES), and Information Systems Security Assessment Framework (ISSAF).
  • Stay abreast of current attack vectors and unique methods for exploitation of computer networks.
  • Provide support to incident response teams through capability enhancement and reporting.
  • Assist in maintaining Red Cell infrastructure.
  • Develop or modify tools that automate discovery or exploitation (e.g. bash, Python, JavaScript, PowerShell).
Join Our Mission:

At Peraton, you’ll be part of a team that’s making a real difference. We are committed to creating solutions that empower the U.S. Intelligence Community and our national defense partners to succeed in their mission to protect America. We offer a culture that fosters innovation, collaboration, and continuous learning, with opportunities for career growth in one of the most dynamic fields in the industry.

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About Peraton

Sourced by ZipRecruiter

At Peraton, we re at the forefront of delivering the next big thing every day. We re the partner of choice to help solve some of the world s most daunting challenges, delivering bold, new solutions to keep people around the world safer and more secure.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Herndon, VA, US

Year founded

2017