Cloud Application Software Security Engineer, Contractor

About the role

Location: St. Louis, Missouri (Partial Remote). We are seeking an application/software engineer with a strong security focus to evaluate, prioritize, and remediate vulnerabilities and compliance findings across custom applications and infrastructure as code (IaC). This position will support the remediation of findings related to custom code and IaC, as well as maturing pipelines to address known SDLC findings. The role sits at the intersection of secure application development, cloud security engineering, and risk/compliance, driving both code-level fixes and cloud configuration hardening to maintain a strong security posture.

Responsibilities

• Conduct security assessments using scanning tools and implement recommended remediations.
• Evaluate and remediate Known Exploited Vulnerabilities (KEVs) and Common Vulnerabilities and Exposures (CVEs) in custom applications and infrastructure.
• Support Security Assessment and Authorization (SA&A) processes, including documentation and evidence collection.
• Analyze Software Bill of Materials (SBOM) findings to identify vulnerable dependencies and recommend updates or alternatives.
• Review and remediate security vulnerabilities in custom VB.NET, SQL, and Python code.
• Perform security analysis and hardening of AWS Cloud Development Kit (CDK) infrastructure as code.
• Collaborate with development teams to implement secure coding practices and address identified vulnerabilities.
• Maintain security documentation and track remediation efforts through completion.
• Ensure compliance with federal security standards and frameworks within the AWS GovCloud environment.
• Participate in security scanning automation and continuous monitoring initiatives.

Requirements

Education: Bachelor's degree in Computer Science, Software Engineering, Cybersecurity, or a related field; or equivalent work experience.

Experience: A minimum of 3-5 years of experience in application security or software development with a security focus. Proven experience with vulnerability assessment and remediation methodologies is required.

Technical Skills: Working proficiency with Python, SQL, and VB.NET or legacy .NET frameworks. Experience with AWS Cloud Development Kit (CDK) or similar IaC tools (Terraform, CloudFormation). Hands-on experience working in AWS environments, preferably AWS GovCloud. Experience with AWS security services (GuardDuty, Security Hub, Inspector, Config). Understanding of CVE/KEV identification and remediation processes. Knowledge of SBOM generation and analysis. Experience with static application security testing (SAST), dynamic application security testing (DAST), and penetration testing.

Other Requirements: U.S. Citizenship is required for this position.

Preferred Qualifications

• Professional security certifications (CISSP, CEH, GIAC GSEC, AWS Security Specialty, or equivalent).
• Knowledge of container security (Docker, ECS, EKS).
• Experience with CI/CD pipeline security integration (Jenkins, GitLab CI, AWS CodePipeline).
• Familiarity with DevSecOps practices and tooling.
• Knowledge of secure software development lifecycle (SSDLC) practices.
• Understanding of zero trust architecture principles.
• Background in both application development and security operations.

Benefits

• Medical, dental, vision, life, disability, and other insurance plans (optional layer of financial protection).
• ESPP (employee stock purchase program) and a 401K program with company match after 12 months of tenure.
• HSA (Health Savings Account on the HDHP plan).
• SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions.
• Corporate discount savings program and other discounts.
• On-demand training program, access to certification prep and a library of technical and leadership courses/books/seminars after 6+ months of tenure, certification discounts and perks to associations including CompTIA and IIBA.
• Dedicated customer service team for Consultants and a certified Career Coach.