Application Security Engineer I - Secure SDLC Builder

Transaction Network Services; Alton (IL); On-site; USD 120,000 - 160,000; Full time

Job summary

Transaction Network Services is seeking an Application Security Engineer to advance secure software practices across the SDLC. You will partner with development, DevOps, infrastructure, and security teams to identify and remediate risks while enabling secure delivery of business applications.

You will lead SAST, SCA, ASPM, CI/CD security, container scanning, and vulnerability management, driving remediation and security automation across multiple units.

Qualifications

• Bachelor's degree in Cybersecurity, Computer Science, IT, or related field.
• Approximately 5+ years in Application Security or secure software development.
• Experience with SAST, SCA, DAST, ASPM, container security, and CI/CD controls.
• Hands-on with GitLab, GitHub, Azure DevOps, or similar platforms.

Responsibilities

• Lead application security assessments and vulnerability management activities.
• Implement and manage SAST, SCA, container security, and CI/CD security controls.
• Drive ASPM platform adoption and security tool integrations.
• Partner with development teams to remediate security findings and improve secure coding.
• Support threat modeling, architecture reviews, and secure design consultations.
• Prioritize remediation efforts for critical and high-risk vulnerabilities.

Skills

AppSec

Threat modeling

Secure coding

Security tooling

Education

Bachelors in CS/SE

Tools

GitLab

GitHub

Azure DevOps

Job description

Transaction Network Services is seeking an Application Security Engineer to advance secure software practices across the SDLC. You will partner with development, DevOps, infrastructure, and security teams to identify and remediate risks while enabling secure delivery of business applications.

You will lead SAST, SCA, ASPM, CI/CD security, container scanning, and vulnerability management, driving remediation and security automation across multiple units.