Senior Application Security Engineer

InfraTech Solutions LLC; Chicago (IL); On-site; USD 140,000 - 210,000; Full time

Job summary

InfraTech Solutions LLC in Chicago is seeking a Senior Application Security Engineer to own and drive our appsec program. You will work hands-on with engineering teams to embed secure development practices and guide security considerations for new features, architectures, and services.

You will lead security tooling and automation, integrate with CI/CD, and collaborate with DevOps to secure AWS infrastructure, ECS, IAM, and container security.

Qualifications

• 3–7+ years of experience in Application Security or related engineering roles.
• Strong understanding of secure coding practices and OWASP Top 10.
• Experience with cloud-native apps, preferably AWS.
• Familiarity with GitHub-based workflows and CI/CD pipelines.
• Ability to influence secure design decisions with developers.

Responsibilities

• Lead and evolve the application security strategy, roadmap, and day-to-day operations.
• Serve as the primary AppSec partner for multiple development teams across web and mobile projects.
• Provide security guidance during design, development, and code review.
• Drive secure coding adoption and threat-modeling across teams.
• Collaborate with DevOps to secure AWS infrastructure and CI/CD workflows.
• Lead security reviews, vulnerability triage, and remediation efforts.

Skills

Secure coding practices

Threat modeling

DevSecOps

CI/CD integration

AWS knowledge

Collaboration with developers

OWASP Top 10

Tools

GitHub Advanced Security

Invicti

Hadrian

AppDome

Cloudflare WAF

CI/CD tooling

Job description

As ourSeniorApplication Security Engineer, you will be the primary owner and driver of our application security program. You’ll work hands on with engineering teams to embed secure development practices, improve tooling and automation, and guide security considerations for new features, architectures, and services.

This is a high impact role where you’ll shape the future of AppSec at a company that values security as a core part of product quality.

What You’ll Do

Application Security Ownership

• Lead and evolve the company’s application security strategy, roadmap, and day?to?day operations.

• Serve as the primary AppSec partner for numerous dev teams working on Ruby on Rails web apps, React Native mobile apps, and various other projects including Python and Go.

• Provide security guidance during design, development, and code review for new features and projects.

• Drive adoption of secure coding practices and threat?modeling across engineering teams.

Tooling & Automation

• Manage and optimize existing AppSec tooling, including:
  • GitHub Advanced Security (SAST, SCA, Secret Scanning)
  • Invicti (DAST)
  • Hadrian (ASM)
  • AppDome (mobile application security)
  • Cloudflare WAF

• Improve automation and integration of security tools into CI/CD pipelines.

• Identify and implement additional tools or processes to strengthen the security posture.

Secure SDLC & Developer Enablement

• Build and maintain secure development standards, playbooks, and training materials.

• Partner with engineering teams during sprint planning and feature design to proactively address risks.

• Conduct security reviews, code assessments, and vulnerability triage with development teams.

Cloud & DevOps Collaboration

• Work with DevOps to ensure secure AWS infrastructure deployments and configurations.

• Contribute to hardening efforts across ECS, IAM, networking, and supporting cloud services.

• Assist in designing and maintaining secure CI/CD workflows.

Incident & Vulnerability Management

• Lead or support investigation and remediation of application?level vulnerabilities.

• Monitor, prioritize, and track findings from SAST/DAST/ASM tools.

• Collaborate with engineering to ensure timely and effective remediation.

What We’re Looking For

Required Skills & Experience

• 3–7+ years of experience in Application Security, Product Security, or related engineering roles.

• Strong understanding of secure coding practices, common vulnerabilities (OWASP Top 10), and modern SDLC.

• Experience working with cloud?native applications, ideally in AWS.

• Understanding of SSL certificates & cryptographic key management

• Hands?on experience with SAST, DAST, WAFs, and/or mobile application security tools.

• Ability to partner effectively with developers and influence secure design decisions.

• Familiarity with GitHub?based workflows and CI/CD pipelines.

Nice to Have

• Development experience with Ruby on Rails or similar dynamic languages.

• Knowledge of AWS ECS/EKS, container security, secrets management and infrastructure?as?code (CloudFormation, Terraform).

• Experience building or maturing an AppSec program from early stages.

• SOAR Automation & Scripting experience

• Experience working in a PCI compliant environment working with annual reporting needs

Why Join Us

• High ownership role where you define the AppSec roadmap.

• Modern engineering environment with strong leadership support for security.

• Opportunity to influence architecture, tooling, and culture across the entire development organization.

• Competitive compensation, benefits, and growth opportunities.

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