Senior Application Security Engineer
Diversified Services Network
Sr. Application Security Engineer
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- Identify and reduce security debt, dependency vulnerabilities, outdated libraries, and software supply chain risk across the application portfolio.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.
Vacancy posted 12 hours ago
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