AppSec Engineer I: Secure SDLC & Automation Lead

Transaction Network Services (TNS); Texas; On-site; USD 75,000 - 83,000; Full time

Benefits offered by this job

Medical and dental coverage

401K with company match

Paid holidays and vacations

Job summary

Transaction Network Services (TNS) is seeking a Senior Application Security Engineer to advance our secure software development program across the SDLC. You will collaborate with application development, DevOps, infrastructure, and security teams to identify, assess, and remediate risks while enabling secure business delivery.

You will lead initiatives including SAST, SCA, ASPM, and CI/CD security, with container security scanning, vulnerability management, and security automation.

Qualifications

• Bachelor’s degree in Cybersecurity, CS, IT, or related field.
• 5+ years in Application Security or Secure Development.
• Experience with SAST, SCA, DAST, ASPM, container security, and CI/CD security controls.
• Hands-on with GitLab, GitHub, Azure DevOps, or similar development platforms.
• Knowledge of OWASP Top 10, threat modeling, secure SDLC, and vulnerability management.
• Relevant certifications such as CISSP, CSSLP, GSEC, GWAPT, or GIAC preferred.

Responsibilities

• Lead application security assessments and vulnerability management activities.
• Implement and manage SAST, SCA, container, 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 practices.
• Develop and maintain AppSec automation, workflows, and operational runbooks.
• Support threat modeling, architecture reviews, and secure design consultations.
• Prioritize and manage remediation efforts for critical and high-risk vulnerabilities.
• Provide application security guidance across multiple business units and technology teams.

Skills

SAST

SCA

ASPM

CI/CD security

Container security

Threat modeling

Secure SDLC

Vulnerability management

GitLab/GitHub/Azure DevOps

Education

Bachelor's degree in Cybersecurity/CS/IT

Tools

GitLab

GitHub

Azure DevOps

Job description

An extraordinarily talented group of individuals work together every day to drive TNS' success, from both professional and personal perspectives. Come join the excellence!

Overview

The Application Security Engineer is responsible for advancing the organization's secure software development program by integrating security throughout the software development lifecycle (SDLC). This role partners closely with application development, DevOps, infrastructure, and security teams to identify, assess, and remediate application security risks while enabling secure delivery of business applications.

The position leads application security initiatives including Static Application Security Testing (SAST), Software Composition Analysis (SCA), Application Security Posture Management (ASPM), CI/CD security integrations, container security scanning, vulnerability management, and security automation. The engineer will support security assessments, threat modeling, secure code review processes, and security tooling integrations across multiple business units. Responsibilities also include managing AppSec intake processes, developing operational runbooks, driving remediation activities, and supporting strategic security transformation initiatives. These responsibilities align with the work currently owned by the departing Application Security resource, including ArmorCode ASPM implementation, SAST/SCA integrations, AppSec automation, GitLab container scanning initiatives, and management of high-priority application security activities.

Responsibilities

This role partners closely with application development, DevOps, infrastructure, and security teams to identify, assess, and remediate application security risks while enabling secure delivery of business applications.

The position leads application security initiatives including Static Application Security Testing (SAST), Software Composition Analysis (SCA), Application Security Posture Management (ASPM), CI/CD security integrations, container security scanning, vulnerability management, and security automation. The engineer will support security assessments, threat modeling, secure code review processes, and security tooling integrations across multiple business units. Responsibilities also include managing AppSec intake processes, developing operational runbooks, driving remediation activities, and supporting strategic security transformation initiatives. These responsibilities align with the work currently owned by the departing Application Security resource, including ArmorCode ASPM implementation, SAST/SCA integrations, AppSec automation, GitLab container scanning initiatives, and management of high-priority application security activities.

Key Responsibilities

• Lead application security assessments and vulnerability management activities.
• Implement and manage SAST, SCA, container, 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 practices.
• Develop and maintain AppSec automation, workflows, and operational runbooks.
• Support threat modeling, architecture reviews, and secure design consultations.
• Prioritize and manage remediation efforts for critical and high-risk vulnerabilities.
• Provide application security guidance across multiple business units and technology teams.
  
  

Qualifications

Preferred

• Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or related field.
• 5+ years of Application Security or Secure Development experience.
• Experience with SAST, SCA, DAST, ASPM, container security, and CI/CD security controls.
• Hands-on experience with GitLab, GitHub, Azure DevOps, or similar development platforms.
• Knowledge of OWASP Top 10, threat modeling, secure SDLC, and vulnerability management.
• Strong communication and stakeholder management skills.
• Relevant certifications such as CISSP, CSSLP, GSEC, GWAPT, or GIAC certifications preferred.
  
  

For this role, we anticipate paying $75,000 - $83,000 annually. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate’s knowledge, skills, abilities, and geographic location. TNS offers a competitive benefit package including medical and dental coverage, life insurance, paid holidays and vacations, and a 401K plan with company match.

If you are passionate about technology, love personal growth and opportunity, come see what TNS is all about!

TNS is an equal opportunity employer. TNS evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic.