Top Remote Senior Security Engineer Jobs

The Senior Security Engineer supports application security, vulnerability assessments, penetration testing, code reviews, security training, and secure SDLC practices. Responsibilities include third-party risk assessments, audit evidence collection, policy and compliance support, vulnerability research, incident response, security metrics, and remediation tracking. The role also administers security-system access, collaborates cross-functionally, guides junior engineers, responds to inquiries, and participates in a rotating one-week-per-month on-call schedule.

Lead complex security incident investigations from assessment through recovery, coordinating containment, remediation, evidence preservation, and stakeholder communication. Analyze threats across endpoint, identity, cloud, SaaS, network, and application environments. Build code, queries, automation, and AI-assisted workflows to improve evidence collection, detection, case management, and response. Lead post-incident reviews, drive lasting improvements, mentor responders, and participate in the incident response on-call rotation.

Build and operate MITRE ATT&CK-aligned threat detections across cloud, endpoint, identity, email, and application telemetry. Own the full detection lifecycle, advance detection-as-code platforms, improve data pipelines and observability, integrate threat intelligence, evaluate AI-powered security capabilities, and support investigations and incident response. Partner with Security Operations and engineering teams while independently taking projects from concept through production.

Build and operate threat detection systems across cloud, endpoint, identity, email, and application environments. Own detection lifecycles, detection-as-code workflows, data pipelines, CI/CD, integrations, threat intelligence enrichment, and AI-assisted security capabilities. Partner with Security Operations and engineering teams on investigations, incident response, threat hunting, and automation. The role requires strong Python and SQL skills, SIEM expertise, cloud and Linux knowledge, and independent project leadership.

Build and mature Headway’s infrastructure security program across AWS and application platforms. Partner with Product and Infrastructure teams on secure system design, security reviews, platform guardrails, vulnerability remediation, and continuous infrastructure improvement. Support incident response and security operations while advancing AI-native cloud security practices. The role requires strong technical depth, cross-functional collaboration, and the ability to establish secure-by-default engineering practices in an ambiguous, fast-paced environment.

Lead cryptographic security assessments of protocols, libraries, applications, and high-assurance systems. Analyze advanced cryptographic constructions, identify design and implementation weaknesses, validate exploitability, and recommend remediation. Build testing and analysis tools, manage client delivery, write precise technical reports, mentor engineers, contribute to methodologies and services, and support open-source research and technical publications.

Monitors and investigates security alerts across SIEM, endpoint, identity, cloud, email, and network environments. Conducts threat hunting, incident response, containment, remediation, vulnerability management, and post-incident reviews. Develops playbooks, automation, integrations, detections, and infrastructure-as-code deployments. Uses and tunes agentic SOC tooling while maintaining human oversight. Coordinates with technical and business teams, participates in a 24/7 on-call rotation, mentors junior engineers, and improves security operations through metrics and continuous improvement.

Lead enterprise eDiscovery and insider-risk investigations by collecting, preserving, analyzing, and reviewing data from cloud infrastructure, endpoints, and repositories. Build AI-powered automation, correlate activity logs into investigative timelines, manage legal holds and governance policies, support digital forensics, and produce structured evidence packages for Security, Legal, HR, and investigative teams.

Lead AI-focused application security at Samsara by assessing software, code, hardware, and firmware against AI-driven attacks. Build and red-team AI-enabled security tools, apply LLMs and agentic workflows to security operations, develop fixes with engineers, and shape company-wide AI security strategy. Partner with engineering, hardware, and executive stakeholders on threat modeling, vulnerability management, secure AI adoption, and offensive validation.

Leads AI-focused application security across software, cloud, hardware, and firmware. Conducts security assessments and AI-driven red-team exercises, develops secure-code fixes and AI-enabled security tooling, validates controls for LLM and agentic systems, and shapes organization-wide AI security strategy. Partners with engineering, hardware, and executive stakeholders to identify threats, implement mitigations, and safely adopt AI within security operations.

Lead AI-focused application security across software, cloud, hardware, and firmware. Conduct offensive security assessments and AI-driven red teaming, develop secure-code fixes and AI-enabled security tooling, evaluate threats such as prompt injection and agent abuse, and establish organization-wide AI security strategy. Partner with engineering, hardware, and executive leadership to strengthen security controls and adoption of safe AI workflows.

Own product and infrastructure security across fintech products and cloud environments. Lead threat modeling, architecture reviews, secure code reviews, vulnerability management, bug bounty operations, CI/CD security scanning, IAM and secrets management, and security standards. Partner directly with engineering leadership to identify and remediate critical vulnerabilities across backend services, APIs, frontends, Solana programs, and infrastructure.

Designs, builds, automates, and operates security capabilities across Azure, GCP, and on-premises environments. Responsibilities include Python automation, AI/LLM security workflows, infrastructure as code, cloud and network security, threat modeling, vulnerability remediation, security tool integration, documentation, troubleshooting, incident improvement, and on-call support. The role owns security services through production, collaborates across engineering teams, and mentors peers.

Own security risk identification, quantification, prioritization, and remediation across third-party risk, assessments, and security findings. Maintain risk registers, reporting, metrics, and remediation tracking while partnering with technical and business stakeholders. Lead AI risk management for ISO 42001 certification and build automation, scripting, and AI-enabled tools to improve GRC workflows. Monitor emerging risks, frameworks, regulations, and threat trends, communicating business-relevant risk insights to leadership.

Architect, develop, optimize, and maintain AI-enhanced access security features and backend services. Integrate LLMs and AI workflows for identity intelligence, risk detection, and remediation. Lead architecture, design, testing, performance, reliability, and production readiness for enterprise systems. Deliver features end to end, collaborate cross-functionally, conduct code reviews, and mentor engineers while improving scalability, maintainability, and security.

Own product and protocol security across Jito’s Solana-based products. Responsibilities include threat modeling, secure design and code reviews, deployment hardening, internal audits, onchain monitoring, bug bounty operations, remediation tracking, AI-assisted security testing, and key and asset risk management. The role requires production software engineering experience, strong application security expertise, security automation skills, and familiarity with Web3, crypto, or DeFi.

Provide pre-sales technical support for regional sales teams by demonstrating Vectra security solutions, addressing customer pain points, and solving technical roadblocks. Build technical relationships with customers and partners, support technology reviews and integrations, maintain expertise in security products and the threat landscape, and collaborate on deployments, designs, releases, and customer projects. Travel within the assigned region as needed.

Provides pre-sales technical support for Vectra’s cybersecurity platform. Demonstrates products, advises customers and partners, resolves technical obstacles, supports deployments and technology reviews, and develops customer relationships alongside regional sales managers. The role requires expertise in security platforms, networking, cloud security, attacker progression, incident response, and security processes, along with strong communication skills and regional travel.

Lead security reviews, code audits, penetration testing, vulnerability research, and mitigation efforts for Microsoft Windows services. Develop reusable security tools and agents, identify attack vectors and architectural risks, demonstrate exploit impact, and collaborate with product engineering teams to design scalable defenses and improve security investments.

Conduct red-team assessments of formally verified systems, evaluating proofs, specifications, threat models, and trusted computing bases. Build AI-driven vulnerability discovery, triage, and exploit-generation tooling; identify and demonstrate exploitable weaknesses in software and infrastructure. Produce rigorous security reports, publish methodologies, collaborate with domain experts and third parties, and deliver engagements on fixed schedules.

Lead security engineering for RTOS, hypervisor, and embedded virtualization: design and review defenses, collaborate on CPU/SoC security, perform threat modeling and automotive TARA, review low-level C/C++ code, build fuzzing and test infrastructure, assess vulnerabilities, and drive security fixes and verification toward automotive safety and security standards.

Perform offensive security research and engineering for Windows: discover vulnerabilities, develop PoC mitigations and tools (fuzzers/agents), conduct code and design reviews, partner with product teams, and engage external researchers to improve OS security.

Monitor, investigate, and respond to global security incidents; lead incident response as an incident commander; develop security alerts, playbooks, automated actions, and escalation workflows; conduct threat hunting and threat intelligence research; improve detection, containment, and post-incident processes; collaborate with stakeholders; and participate in an on-call rotation.

Provides pre-sales technical support and technical account management for Vectra’s cybersecurity platform. Leads customer discovery, product demonstrations, proofs of concept, technology reviews, integrations, and security architecture discussions. Builds technical relationships with customers and channel partners, supports sales teams, collaborates on deployments and product projects, and maintains expertise in security technologies, networking, cloud security, attacker progression, incident response, and competitive offerings. Regional travel is required as needed.

Designs and operates identity and access management systems across human, service, workload, and AI identities. Owns lifecycle automation, data-driven access models, time-bound entitlements, identity-as-code, cloud IAM, and AI-powered access reviews. Partners with Engineering, IT, and Compliance to reduce unnecessary access, support audits, and respond to identity-related incidents. Requires strong software engineering skills and hands-on experience with Okta, enterprise SaaS provisioning, AWS IAM, and AI or LLM tooling.