(1111723) Senior Application Security Engineer

Diversified Services Network, Inc.; Peoria (IL); Hybrid; USD 100,000 - 135,000; Full time

Benefits offered by this job

401(k)

Dental insurance

Vision Insurance

Disability insurance

Employee assistance program

Health insurance

Health savings account

Life insurance

Paid time off

Paid Holidays

Job summary

Diversified Services Network, Inc. is seeking a Sr. Application Security Engineer in the Chicago area with remote work and occasional onsite.

You will lead security assessments across applications, APIs, and cloud workloads, drive remediation, and build governance dashboards to show posture trends. Ideal candidates have 5–7 years of hands-on application security/DevSecOps experience, strong secure coding practices, and collaboration with architects, developers, and DevOps teams.

Qualifications

• Bachelor’s and/or Master’s degree in Computer Science, Cybersecurity, Information Systems, or a related field (or equivalent practical experience).
• 5–7 years of hands-on application security / DevSecOps experience.

Responsibilities

• Define, implement, and continuously improve application security processes, standards, and workflows across the SDLC.
• Perform security assessments of applications, APIs, cloud workloads, and infrastructure.
• Drive remediation from discovery through verified closure with backlog management and evidence collection.
• Identify and reduce security debt, vulnerable dependencies, and software supply chain risk.
• Build security metrics and dashboards for leadership visibility and remediation status.

Skills

Secure SDLC

DevSecOps

Agile

Scrum

Burp Suite

GitHub Advanced Security

CodeQL

SAST

SCA

Secret scanning

Dependency analysis

CI/CD security

Education

Bachelor's degree

Master's degree

Tools

CI/CD tooling

Cloud security tooling

Job description

Diversified Services Network, Inc. (DSN) is seeking a full-time Sr. Application Security Engineer to join our team in Chicago, IL. We offer remote work, with occasional onsite work, based in Chicago, IL, full benefits, PTO, 401k, and more! If you’re looking to grow your career within an extremely reputable, stable Fortune 100 company — let’s talk!

Key Responsibilities

• Define, implement, and continuously improve application security processes, standards, and workflows embedded throughout the software development lifecycle (SDLC).
• Perform AI-assisted and traditional security assessments of applications, APIs, cloud workloads, repositories, and supporting infrastructure.
• Manage security scanning coverage — source code analysis, secret scanning, dependency analysis, and infrastructure reviews — and triage findings by exploitability, business impact, and severity.
• Drive remediation from discovery through verified closure, including backlog management, ownership assignment, retesting, and evidence collection.
• Identify and reduce security debt, dependency vulnerabilities, outdated libraries, and software supply chain risk across the application portfolio.
• Build security metrics, coverage reporting, and executive dashboards that give leadership visibility into remediation status and posture trends.
• Leverage AI tools responsibly to accelerate security analysis, threat modeling, code review, and documentation within appropriate governance controls.
• Perform manual validation and security testing using tools such as Burp Suite, browser developer tools, API testing platforms, and secure code review methodologies.
• Apply OWASP Top 10, API Security Top 10, and secure coding principles across authentication, authorization, and diverse technology stacks.
• Support remediation by developing code fixes, configuration changes, and compensating controls while minimizing production risk and business impact.
• Partner daily with architects, developers, DevOps engineers, product owners, and business stakeholders to communicate risk, negotiate priorities, and remove blockers.
• Maintain Agile work items (stories, tasks, defects) and participate in Scrum ceremonies — stand-ups, backlog refinement, sprint planning, and review.
• Stay current on emerging threats, AI-related security risks, and industry best practices; coach and mentor application teams to build a security-first culture.

Education & Experience:

• Bachelor’s and/or Master’s degree in Computer Science, Cybersecurity, Information Systems, or a related field (or equivalent practical experience) and 5–7 years of hands‑on application security / DevSecOps experience.

Technical Skills:

• Strong working understanding of Secure SDLC, DevSecOps, Agile, and Scrum methodologies.
• Experience with security tooling: Burp Suite, GitHub Advanced Security, CodeQL, SAST, SCA, secret scanning, dependency analysis, and CI/CD security tooling.
• Ability to read, analyze, test, and modify production application code in Java and Python to validate security findings and support remediation.
• Knowledge of OWASP Top 10, API Security Top 10, authentication/authorization controls, and secure coding principles.
• Familiarity with cloud security, identity and access management, and modern application architectures.
• Experience using AI-assisted development and security tools safely and effectively.
• Skilled in vulnerability triage and validation (exploitability, business impact, severity, compensating controls) and in building security metrics and dashboards.

Soft Skills:

• Excellent communication, stakeholder management, presentation, and documentation skills.
• Ability to work independently across multiple applications, teams, portfolios, and technology stacks.
• Strong problem-solving mindset that balances security, usability, and business objectives.
• Collaborative and influential — able to negotiate priorities and remove blockers across teams.
• Comfortable coaching others and championing a security-first culture.

• 401(k)
• Dental insurance
• Vision Insurance
• Disability insurance
• Employee assistance program
• Health insurance
• Health savings account
• Life insurance
• Paid time off
• Paid Holidays

Expected Compensation: $100,000 - 135,000 per annum