Top Senior Security Engineer Jobs in Chicago, IL

Lead expansion and maintenance of a Zero Trust security program across hybrid on-premises and cloud environments. Manage identity and access controls, deploy and tune SIEM/EDR/XDR/IAM tooling, automate security operations, reduce alert fatigue, and collaborate with IT, DevOps, and business teams to strengthen enterprise security across endpoints, cloud, SaaS, identity, network, and data protection.

Lead cloud security direction and standards across AWS, GCP, and self-managed Kubernetes. Own threat modeling, secure architecture, detection engineering, incident response, and vulnerability management. Harden IaC and CI/CD (Terraform), secure Kubernetes control plane and runtimes, and mentor other engineers while driving cross-functional security initiatives and tooling adoption.

Design, implement, and manage enterprise security solutions including endpoint, network, SaaS, and cloud protections. Investigate malware and advanced threats, expand SIEM detections, deploy DLP, perform forensics and vulnerability remediation, secure IAM/SSO/MDM, automate detections and reporting, participate in on-call incident response, and mentor junior security engineers.

The Senior Security Engineer will manage customer identity platforms, ensuring secure authentication and access across products, while supporting integration and optimizing performance.

The Senior Security Engineer will design secure development lifecycles, integrate security tools, lead remediation of security issues, and mentor teammates, ensuring systems resilience and security across DraftKings.

This role involves owning the security architecture for AI platforms on GCP, designing guardrails, and integrating security into CI/CD pipelines. Candidates should have extensive experience in cloud security, specifically with GCP services, Kubernetes security, and AI/ML security practices.

Senior Cloud Security Engineer responsible for hands-on remediation of cloud and infrastructure vulnerabilities, operating vulnerability and CSPM tooling, enforcing secure configurations across Azure environments, embedding security in CI/CD and IaC, supporting compliance/audits and reporting, mentoring engineers, and partnering with cross-functional teams to maintain cloud security posture and policy.

As a Sr. Product Security Engineer, you will focus on network security, identifying gaps, architecting solutions, and leading cross-functional security initiatives.

Lead detection, response, and digital forensics for security incidents. Monitor alerts, perform technical analysis, act as Incident Commander, build automation and runbooks, mentor engineers, and coordinate cross-team investigations and insider threat work.

Design, maintain, and extend abuse detection and prevention systems for GitLab's SaaS platform. Serve as a core maintainer of a Ruby on Rails monolith, build anomaly detection and agentic AI mitigations, automate abuse response, collaborate with peer engineering and security teams, and produce runbooks and operational documentation.

Design, implement, and operationally support enterprise security platforms across cloud, endpoint, identity, network, and SaaS. Lead detection, telemetry, vulnerability management, automation, and incident escalation. Partner with stakeholders to deliver secure, scalable services, improve security posture and Zero Trust objectives, and mentor engineers while maintaining documentation, KPIs, and on-call support.

Senior security engineer responsible for developing automation and tooling, building and deploying security solutions, conducting incident response and proactive threat hunting, supporting investigations through data analysis, and advising development teams. Must document solutions, participate in agile teams, mentor juniors, and continuously research evolving security threats.

Act as the technical presales lead for AI agent and cloud identity security across North America: scope engagements, design and run POCs and architectures across AWS/Azure/GCP, secure non-human and machine identities, create repeatable technical assets, and partner with account teams to close deals.

The Security Engineer will design and maintain automation frameworks, manage security processes, optimize infrastructure, and integrate security automation while collaborating across teams.

Lead architecture and scaling of an automated, AI-driven vulnerability detection and remediation platform across cloud, containers, and applications. Correlate SAST/DAST/SCA findings, implement AI-assisted triage, run red/purple team validation, and build automated remediation pipelines integrated into CI/CD for continuous compliance and risk reduction.

Lead penetration testing and vulnerability remediation for web, mobile, and medical device applications, ensuring compliance with healthcare regulations.

The Senior Application Security Engineer ensures the security of systems and data by monitoring vulnerabilities, responding to incidents, and promoting security best practices within the organization.

Lead AppSec efforts across product, platform, and AI features by owning secure SDLC, performing threat modeling and deep code reviews, driving vulnerability management and remediation, building AppSec tooling and automations (including AI-assisted workflows), and enabling engineering teams with secure design guidance and training.

The Security Software Engineer will design and implement security controls for MongoDB Atlas, collaborating across engineering teams and ensuring adherence to high security standards.

The Senior Site Reliability Engineer will lead security design and implementation for cloud infrastructures, mentor teams, and automate security solutions.