Top Senior Security Engineer Jobs

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.

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.

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.

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.

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.

Secure Hi Marley’s internal AI environment by threat-modeling LLM integrations, agents, MCP connectors, and data pipelines; enforcing isolation, least privilege, and data boundaries; conducting AI red-team testing; managing AI tool governance; maintaining incident response runbooks; and producing SOC 2 and ISO 42001 compliance evidence. Partner with AI Operations and IT on access controls, cloud workload isolation, DLP, monitoring, and safe AI usage guidance.

Designs and improves enterprise security across endpoints, SaaS, cloud, identity, AI tooling, corporate networks, and infrastructure. Develops SIEM, SOAR, and EDR detections, alerts, automation, monitoring, and incident response workflows. Leads security investigations and remediation, strengthens access controls and hardening standards, reviews SaaS and vendor security, and establishes governance for AI-related risks including data exposure and prompt injection.

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 cloud security strategy across AWS, GCP, Kubernetes, and self-managed systems. Define security standards, reference architectures, threat-modeling practices, IAM controls, detection engineering, incident response, vulnerability management, and secure infrastructure pipelines. Serve as a senior technical leader, mentor engineers, guide cross-functional initiatives, and develop scalable security controls and playbooks. The role requires production cloud security ownership, hands-on AWS, GCP, Kubernetes, Python, and Terraform experience.

Provides technical leadership for cloud security across AWS, GCP, Kubernetes, and self-managed infrastructure. Defines security standards, reference architectures, threat-modeling practices, IAM controls, detection strategies, incident-response playbooks, vulnerability management, and Kubernetes security standards. Leads cross-functional initiatives, mentors engineers, secures infrastructure-as-code and CI/CD pipelines, and investigates cloud security incidents. This is a senior individual contributor role requiring production cloud security ownership and hands-on coding in Python and Terraform.

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.

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.

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.

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.

Design and implement multi-cloud security controls, build policy-as-code and IaC guardrails integrated into CI/CD, harden container and Kubernetes workloads, perform vulnerability analysis and remediation, support incident response and forensics, provide audit evidence for compliance frameworks, mentor other security engineers, and participate in on-call incident rotations to improve remediation and response processes.

Design, implement, and maintain security controls across cloud (AWS) and on-prem systems. Lead vulnerability management, incident response, and remediation. Serve as SME for SIEM, SAST/DAST, IAM. Embed security in SDLC, support SOC 2/ISO 27001 audit readiness, mentor junior engineers, and recommend control improvements.

As a Senior Security Engineer, you'll lead AWS cloud security, manage security operations, and implement Zero Trust principles while using AI-powered tools for automation and incident response.

The Senior Security Engineer will build and maintain detection systems, automate responses, and lead incident investigations to enhance security observability.

The Senior Security Engineer will design and maintain detection logic, conduct threat hunting, improve incident handling, and collaborate with teams to enhance security processes.