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Application Security Engineer Jobs in Naperville, IL

Epsilon

Staff Application Security Engineer

Chicago, IL

$60.50 - $80.75/hr

Integrate AI into Application Security to Enable Secure-by-Design Engineering Drive the adoption of AI-enabled development practices that embed application security directly into the software ...

Cboe Global Markets

Engineer, Application Security

Chicago, IL · On-site

$60.50 - $80.75/hr

Role Overview Cboe's Cybersecurity team is seeking an Application Security Engineer to develop their expertise in practical, code-adjacent security within a collaborative and fast-paced environment.

Tempus

Senior Application Security Engineer

Chicago, IL

$130K - $180K/yr

Tempus is seeking a Senior Application Security Engineer with deep expertise in penetration testing to lead efforts in identifying and remediating vulnerabilities across web, mobile, and medical ...

Tempus

Senior Application Security Engineer

Chicago, IL · On-site

$130K - $180K/yr

Tempus is seeking a Senior Application Security Engineer with deep expertise in penetration testing to lead efforts in identifying and remediating vulnerabilities across web, mobile, and medical ...

Morgan Street Holdings

AI Security Engineer

Chicago, IL · On-site

$110 - $140/hr

Secure Coding & Application Security * Apply OWASP principles and industry‑standard secure development lifecycle (SDLC) practices to engineering workflows. * Perform static and dynamic application ...

Beyond Finance

Senior Security Engineer

Chicago, IL · On-site

$118K - $161K/yr

You'll partner with DevOps, Engineering, and our Application Security Engineer to build preventative controls across infrastructure, identity, and CI/CD. The work is hands-on: configuring tooling ...

Sonoma Consulting Inc.

Security Engineer

Glenview, IL · On-site

... web application firewalls(WAF), vulnerability scanners, penetration tests, incident response ... Security Engineer, Information Security Engineer, Senior Security Engineer, Security Consultant ...

Ecolab

Lead Offensive Security Engineer

Naperville, IL · On-site

Partner with product security, application engineering, cloud engineering, IoT engineering, architecture, and business teams to translate testing results into clear remediation actions and risk-based ...

Ecolab

Senior Offensive Security Engineer

Naperville, IL · On-site

$114K - $156K/yr

Partner with product security, application engineering, cloud engineering, IoT engineering, architecture, and business teams to translate testing results into clear remediation actions and risk-based ...

Ecolab

Senior Offensive Security Engineer

Naperville, IL · On-site

$114K - $156K/yr

Partner with product security, application engineering, cloud engineering, IoT engineering, architecture, and business teams to translate testing results into clear remediation actions and risk-based ...

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All JobsApplication Security Engineer JobsApplication Security Engineer Jobs in Naperville, IL

Application Security Engineer information

See Naperville, IL salary details

$29

$65

$95

How much do application security engineer jobs pay per hour?

As of Aug 9, 2026, the average hourly pay for application security engineer in Naperville, IL is $65.83, according to ZipRecruiter salary data. Most workers in this role earn between $56.01 and $74.86 per hour, depending on experience, location, and employer.

What does an application security engineer do?

An application security engineer is responsible for ensuring the secure function of software application programs. For this career, you must have advanced training in cybersecurity and familiarity with multiple computer programming languages. Your main job duty is to evaluate lines of programming code to make sure a given application is safe from cyber-attack. You perform penetration testing to see if outside sources can "hack" into the application. You also do threat modeling and security code reviews of programming done by other application programmers.

What are some common challenges faced by application security engineers when integrating security into the software development lifecycle?

Application Security Engineers often encounter challenges such as balancing security requirements with development speed, ensuring all team members understand secure coding practices, and keeping up with evolving threats. They frequently work closely with developers, DevOps, and QA teams to embed security controls without disrupting workflows. Overcoming these challenges requires strong communication skills, a deep understanding of both security and software development, and the ability to advocate for security as a shared responsibility across the organization.

What does an application security engineer do?

An Application Security Engineer is responsible for identifying and mitigating security vulnerabilities in software applications throughout their development lifecycle. They work closely with developers to ensure secure coding practices, conduct security assessments and code reviews, and implement tools for threat detection and prevention. Their primary goal is to protect applications from threats such as data breaches, unauthorized access, and other forms of cyber attacks. They also stay updated on the latest security trends and compliance requirements to keep applications safe.

What are the key skills and qualifications needed to thrive as an application security engineer, and why are they important?

To thrive as an Application Security Engineer, you need a solid background in software development, cybersecurity fundamentals, and vulnerability assessment, often supported by a degree in computer science or a related field. Familiarity with tools such as static and dynamic application security testing (SAST/DAST), penetration testing frameworks, and relevant certifications like CISSP or CEH is common. Attention to detail, problem-solving abilities, and strong communication skills help you effectively identify risks and collaborate with development teams. These skills are crucial for safeguarding applications against evolving threats and ensuring secure software delivery.

What is the difference between Application Security Engineer vs Security Analyst?

AspectApplication Security EngineerSecurity Analyst
CertificationsCEH, CISSP, OSCPCISSP, Security+
Work EnvironmentDevelops security measures, reviews code, tests applicationsMonitors security systems, investigates incidents, analyzes threats
Industry UsageTech companies, software firms, organizations with strong app focusBroad sectors including finance, healthcare, government

Application Security Engineers focus on securing software applications through code review, vulnerability testing, and implementing security measures. Security Analysts monitor and analyze security threats, respond to incidents, and maintain security systems. While both roles require security certifications and work in security-focused environments, Application Security Engineers are more involved in the development and testing of secure applications, whereas Security Analysts focus on threat detection and incident response.

More about Application Security Engineer jobs
What are popular job titles related to Application Security Engineer jobs in Naperville, IL? For Application Security Engineer jobs in Naperville, IL, the most frequently searched job titles are:
What job categories do people searching Application Security Engineer jobs in Naperville, IL look for? The top searched job categories for Application Security Engineer jobs in Naperville, IL are:
Application Security Engineer jobs near you
Infographic showing various Application Security Engineer job openings in Naperville, IL as of August 2026, with employment types broken down into 76% Full Time, 18% Part Time, and 6% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $136,930 per year, or $65.8 per hour.

Application security engineer

Maintec Technologies Inc

Chicago, IL • On-site

$60.50 - $81/hr

Other

Posted 2 days ago

New

Job description

Position: Application security engineer

Location: Chicago, IL or Washington DC, or Charlotte, NC, or Denver, CO

Onsite: 5 days onsite (no exceptions)

Interview process: 1 video interview then 1 onsite interview (must onsite or they are out). The onsite interview will be the location closest to them.

Contract 18 months

Any Visa is fine on w2

Needs:

Web server/web application-based experience

Application Security

WAF experience

HTTP

HP Protocol

Can look at a web log and tell all the status codes

3 major tools they use:

F5 load balancer

AWS

Akamai: Content delivery network

Domains register in Akamai

Job Title

Application Security Engineer – Bot Detection & Traffic Routing

Overview

We are seeking an experienced Application Security Engineer to support the detection, analysis, and mitigation of automated bot traffic across enterprise web applications. This role will focus on web application security, traffic routing, load balancing, and content delivery optimization, working across technologies such as F5, AWS, and Akamai. The ideal candidate will have strong knowledge of web protocols, application security principles, and the ability to analyze web traffic logs to identify suspicious behavior and troubleshoot traffic-related issues.

Key Responsibilities

  • Monitor, analyze, and mitigate malicious bot activity impacting web applications and services.
  • Design, implement, and support web traffic routing strategies across enterprise environments.
  • Configure and maintain Web Application Firewall (WAF) policies to protect critical applications.
  • Analyze web server and application logs to identify security threats, performance issues, and abnormal traffic patterns.
  • Interpret and troubleshoot HTTP status codes and application responses.
  • Manage and optimize traffic delivery through Akamai Content Delivery Network (CDN).
  • Support domain management and DNS-related configurations within Akamai environments.
  • Configure, maintain, and troubleshoot F5 load balancers and traffic management solutions.
  • Partner with application, infrastructure, and security teams to improve application availability and security posture.
  • Implement security best practices within AWS-hosted applications and services.
  • Investigate security incidents related to web applications, automated traffic, and routing infrastructure.
  • Develop monitoring, alerting, and reporting capabilities for bot detection and web traffic analysis.

Required Qualifications

  • 3+ years of experience supporting web applications, web servers, or application security platforms.
  • Strong understanding of HTTP and HTTPS protocols.
  • Hands-on experience with Web Application Firewalls (WAF).
  • Experience analyzing web server logs and application logs.
  • Ability to identify, interpret, and troubleshoot HTTP response codes and traffic anomalies.
  • Knowledge of application security concepts, including OWASP Top 10 and common web application vulnerabilities.
  • Experience supporting production web environments and internet-facing applications.
  • Strong troubleshooting and analytical skills.

Preferred Qualifications

  • Experience with F5 Load Balancers (LTM, GTM, ASM/Advanced WAF).
  • Experience with AWS cloud services and cloud networking.
  • Experience administering or supporting Akamai CDN solutions.
  • Familiarity with bot management and automated traffic mitigation platforms.
  • Experience with DNS, domain registration, and traffic routing concepts.
  • Knowledge of scripting or automation tools such as Python, Bash, or PowerShell.
  • Security certifications such as Security+, AWS Security Specialty, GIAC, or similar.

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