Top Senior Security Engineer Jobs

Designs, implements, and operates enterprise security solutions; monitors and responds to security events; leads vulnerability assessments; creates security policies and procedures; ensures regulatory/HIPAA compliance; mentors IT security staff and coordinates with vendors and compliance teams to improve security posture.

Serve as a trusted security liaison embedding security-by-design into product and business lifecycles. Lead early security discussions, translate business objectives into risk-oriented priorities, maintain risk registers, track metrics, and coordinate cross-functional mitigation to enable innovation while managing risk.

Lead cloud security engineering efforts by designing and automating scalable security controls, building safe-by-default tooling, conducting assessments and threat modeling, responding to incidents, and partnering with engineering teams to improve cloud security posture across AWS and Azure.

Lead cloud security engineering by designing and automating scalable controls, building safe-by-default tooling, conducting security assessments and threat modeling, responding to incidents, and partnering with engineering teams to remediate vulnerabilities and secure cloud infrastructure.

Lead design and implementation of scalable cloud security controls and automated guardrails. Build security-as-a-service tooling, perform assessments and threat modeling, support incident investigations, and partner with engineering teams to deploy security improvements and third-party/AI tool assessments.

Build and maintain scalable security platforms, automation, and tooling to protect data across SaaS, cloud, endpoints, collaboration tools, AI systems, and data warehouses. Develop data discovery, classification, governance, DLP, DSPM/SSPM, insider-risk, and access controls; leverage AI and automation to improve detection, prevention, and incident workflows while partnering with cross-functional teams.

Lead design, implementation, and management of security infrastructure across on-prem, cloud, and hybrid environments. Drive incident response, threat detection tuning, vulnerability assessments, risk and compliance (HIPAA, PCI-DSS, NIST, ISO 27001), security policy development, and security training. Collaborate with IT, DevOps, legal, and procurement to integrate security into SDLC and vendor selection.

Hands-on senior security engineer role building and operating cryptographic, key-management, and signing services for Citi's digital assets platform. Develop Java backend services, integrate and operate HSMs, implement MPC/TSS schemes, enforce crypto best practices, embed CI/CD security tooling, and lead threat modeling and incident escalation.

Design and implement security architectures and deployment strategies, operate and tune security tools (firewalls, NIDS/HIDS, SIEM, endpoint protection), improve SOC workflows, gather requirements, recommend compliant solutions (PCI/HIPAA/SOX), support customers and C-level stakeholders, write SOWs/proposals, and provide technical leadership.

Lead cloud security engineering by designing and implementing automated, scalable controls and guardrails for cloud infrastructure. Partner with engineering to deploy security enhancements, investigate incidents, assess third-party integrations and emerging AI tools, and perform threat modeling and architectural security reviews.

Design and build security architectures for a global phased-array ground station network. Implement controls across RF protocols to cloud (Kubernetes), deploy SIEM and log pipelines, lead incident response and threat hunting, liaison with government customers, and automate compliance (FedRAMP, NIST 800-171) to enable secure, scalable deployments.

Design, build, and maintain developer-focused security tooling and automation. Deploy and optimize Wiz and Fastly WAF across CI/CD and Kubernetes, integrate cloud security tooling, perform code reviews and threat modeling, and build AI-assisted workflows to scale product security.

Lead design and management of security architecture (SIEM, EDR, DLP, firewalls, VPNs), drive incident response and detection tuning, perform vulnerability and risk assessments, support compliance/audits (HIPAA, PCI-DSS, NIST, ISO 27001), and provide cross-functional security guidance and training.

Lead the security design, architecture, and implementation for an enterprise AI platform. Define secure deployment patterns, embed security into CI/CD and operations, secure GenAI workflows, and lead customer security reviews and compliance activities for Fortune 1000 deployments.

Lead cloud and infrastructure security and detection engineering: deploy SIEM, author MITRE-mapped detections, build cloud security posture and IaC gates, own incident response playbooks and SOC 2 Type II operational evidence, and drive vulnerability remediation and security reporting.

Lead design and implementation of security architecture and controls across Macroscope’s distributed systems. Protect customer data, harden production, embed secure-by-default practices, and partner with engineering to improve IAM, cloud security, secrets management, CI/CD, vulnerability management, and monitoring.

Lead design, deployment, operation and enhancement of data security capabilities (DLP, email encryption, key management). Develop rules from business requirements, run product evaluations/POCs, manage upgrades, incident response, audits, vendor coordination, and continuous improvement to reduce data leakage risk.

Lead and perform application and network penetration tests, source code and cloud security reviews, and produce clear pentest reports. Research and develop pentesting tools/methods for blockchain and Web3, contribute to community content, and support client security engagements.

Designs and audits secure network and cloud architectures, evaluates firewall changes, manages SSE/CASB tooling, governs SaaS security, and assesses AI-related security risks. Partners with engineering, legal, and compliance to implement controls, investigate incidents, and develop reusable security standards and documentation across enterprise systems.

Lead design and implementation of end-to-end security for multi-cloud and hybrid environments. Architect Zero Trust and DevSecOps solutions, embed automated SAST/DAST in CI/CD, lead incident response and forensic investigations, manage risk-based vulnerability programs, implement AI security guardrails, and ensure compliance with GDPR, NIST 800-53, and cloud sovereignty requirements while mentoring junior staff.

Build and operate cloud-native security services and platforms. Own components end-to-end, improve availability, scalability, and security of distributed systems, participate in on-call, incident response, design reviews, and deliver tooling, automation, and documentation to improve developer security and reliability.

Design, build, automate, and operate network security controls across AWS, GCP, private cloud, and enterprise environments. Lead security architecture initiatives, implement zero trust and SASE solutions, assess infrastructure designs, and support firewalls, WAF, DDoS, and IPS/IDS controls. Partner with cybersecurity and trust teams on policies and compliance, mentor engineers, document architectures, and participate in production on-call support.

Build and secure scalable backend services for an AI product, focusing on authentication, authorization, data isolation, threat monitoring, secrets and key management, vulnerability management, audit logging, and enterprise data protection. Partner with security, compliance, product, and engineering teams to identify trust-boundary issues and deliver pragmatic security improvements. Contribute to cloud infrastructure, compliance initiatives, and general backend engineering in a fast-moving startup environment.

Recognized as a senior security expert, this role independently resolves complex cybersecurity challenges, defines methods for new assignments, provides strategic direction, and collaborates across teams. The engineer leads high-impact security projects, develops innovative solutions aligned with business needs, and drives enterprise-wide improvements to security practices and operational efficiency.

Drive end-to-end vehicle security initiatives across software and hardware, including development, integration, testing, threat modeling, security feature implementation, and platform tooling. Guide product teams on secure design, build security automation, and resolve cross-functional security tradeoffs. The role spans low-level firmware, embedded systems, cloud services, and full-stack security solutions for connected vehicles.