Top Senior Security Engineer Jobs

Design, implement, and manage enterprise security solutions to protect users, infrastructure, and SaaS applications. Investigate malware and advanced threats, run forensics and incident response, tune SIEM detections, deploy DLP and automation, secure endpoints and IAM/SSO, perform vulnerability remediation and security reviews, and mentor junior staff. Participate in on-call rotations and collaborate cross-functionally to improve security architecture and enforce policies.

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.

Lead design, implementation, and operational management of enterprise security controls: investigate malware and threats, expand SIEM detections, deploy DLP, secure SaaS and endpoints, harden configurations, run forensics and incident response, automate detections and reporting, and mentor junior engineers while participating in on-call rotations.

Protect employees, assets, and locations by designing and operating enterprise security infrastructure. Investigate malware and advanced threats, implement DLP, secure SaaS and endpoints, harden configurations, expand SIEM detections, perform forensics and vulnerability remediation, automate detections and reporting, guide security reviews, mentor junior staff, participate in on-call incident response, and recommend security architecture and tooling improvements.

Design, deploy, and maintain SOAR capabilities for security automation, develop workflows, and integrate AI tooling for enhanced security responses.

The Senior Security Engineer will design and implement data protection solutions, manage security incidents, and ensure compliance in a fintech setting.

Plan and execute red team operations, build offensive tools, improve efficiency with automation and AI, and collaborate with security teams.

Lead KPA's enterprise security platforms and technical security initiatives across cloud, identity, endpoints, network, and DevOps. Own vulnerability management, incident response, SOC 2 compliance, vendor security assessments, and security automation. Partner with IT and DevOps to embed security in CI/CD, IaC, containers, and cloud workloads while improving posture through detection engineering, automation, and governance.

Lead product and application security by partnering with product and engineering to design secure features, perform code and architecture reviews, build AI-native security tooling, create developer guardrails, and support incident response, vulnerability management, and penetration testing to scale Headway's security program.

Lead design, build, and management of security infrastructure across AWS and OCI; drive enterprise network security, VPNs, WAF, zero-trust, segmentation, and identity/access controls; develop IaC and automation, run vulnerability management, detection engineering, and incident response; partner with IT and engineering teams.

Lead application and product security across web, mobile, API, AI/CV, and cloud-native systems. Drive secure SDLC, DevSecOps, CI/CD and supply chain security, threat modeling, tooling/automation, vulnerability remediation, and developer enablement while partnering closely with engineering teams.

Lead design, build, and operation of security infrastructure for cloud and corporate networks. Manage AWS and OCI environments, network security (firewalls, segmentation, WAF, VPN), zero-trust, identity and access, IaC automation, vulnerability management, detection engineering, and incident response while partnering across IT and engineering teams.

The Senior Security Engineer will enhance AI security solutions, evaluate threats, design guardrails, and collaborate with teams to implement security strategies in a cloud environment.

Design and build end-to-end incident response automation (detection, triage, containment, recovery). Create and tune detections in SIEM/EDR/AI SOC, integrate LLMs and MCP servers for agentic workflows, purple team with red team, validate defenses with automated tests, and respond to incidents to drive further automation.

The Senior Security Engineer will secure cloud infrastructure across various services, develop security policies, manage exceptions, and respond to security alerts while collaborating with teams to eliminate security risks.

Responsible for designing, implementing, and maintaining security measures to protect systems and data. Automates security processes and collaborates with engineering teams to identify vulnerabilities and ensure compliance with standards.

Lead incident response and threat hunting efforts at CoreWeave, owning cybersecurity incidents end-to-end and developing AI-powered tools to enhance defense against threats.

Design, implement, and automate scalable cloud security solutions and baselines across AWS/Azure/GCP. Build guardrails, IAM, detection/monitoring, configuration management, and data protection using IaC (Terraform) and everything-as-code. Collaborate with Product Engineering and security teams, produce technical documentation, and operationalize security tooling.

As a Senior Security Engineer at Klaviyo, you'll build secure detection systems, automate response operations, and enhance security observability, driving incident response and threat detection efforts.

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 as a senior individual contributor: define standards and reference architectures, drive cross-team initiatives, own threat modeling and IAM strategy, design detections and lead incident response/cloud forensics, manage vulnerability workflows, and secure self-managed Kubernetes, IaC, and CI/CD pipelines while mentoring engineers and producing durable, scalable controls.

Define cloud security standards and reference architectures across AWS, GCP, and self-managed Kubernetes. Lead threat modeling, detection engineering, incident response, cloud forensics, IaC/CI-CD security (Terraform), vulnerability management, and mentor other engineers.

Lead cloud security strategy and standards across AWS, GCP, and self-managed Kubernetes. Drive secure architecture, threat modeling, detection engineering, incident response, and platform/IaC security. Mentor engineers, own cross-functional initiatives, harden tooling (CrowdStrike, Tenable, SIEM), and codify playbooks and controls for large-scale distributed systems.

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.

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