Top Senior Cyber Security Jobs in Portland, ME

Lead GitLab’s Security Posture Management team within Product Security. Drive governed security capability rollouts across the software estate, establish secure configuration baselines, build software supply chain security, manage risk registers and posture metrics, support audit evidence, and provide customer-zero feedback to Product and Engineering. Hire, coach, and develop the team while representing GitLab’s security practices externally and driving measurable risk reduction in a remote, asynchronous environment.

Leads Forward’s application and product security program, including a team of senior engineers, penetration testing, vulnerability remediation, secure SDLC practices, and AI security. Owns testing standards, remediation workflows, exposure controls, pre-production security reviews, and security services. Partners with Engineering and executives to communicate risk and priorities while securing web applications, APIs, cloud infrastructure, and AI-built software.

Lead application security engineering across the SDLC using AI-assisted threat modeling, automated security testing, vulnerability prioritization, and secure-by-default controls. Partner with Engineering, Product, QA, DevOps, and AI platform teams to secure applications, APIs, cloud infrastructure, data, and AI/ML systems. Build security automation, CI/CD controls, policy-as-code guardrails, developer enablement, and proactive defenses against emerging threats such as prompt injection and data poisoning.

Own AWS cloud security posture and vulnerability management using Wiz and AWS-native services. Build Infrastructure as Code guardrails, secure CI/CD pipelines, automate vulnerability workflows, and operate WAF protections. Partner with DevOps and engineering on IAM, network segmentation, containers, secrets, data exposure, telemetry, threat modeling, and application security. Drive projects independently while reducing organizational risk.

Staff Security Engineer partners with Product, Engineering, and DevOps to embed security into application architecture, cloud infrastructure, and CI/CD processes. Responsibilities include secure design and code review, vulnerability remediation, AWS cloud security, WAF tuning, security automation in Python, SIEM and log pipeline contributions, endpoint controls, and security standards. The role requires deep expertise in application security, cloud security, or security automation, plus threat modeling and independent project ownership.

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.

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.

Manage security operations and lead a security engineering team defending endpoints, SaaS, infrastructure, and corporate systems. Serve as senior Incident Commander, oversee detection and response using CrowdStrike, conduct cybersecurity risk assessments, and improve vulnerability, patch, access, and configuration management. Build detection coverage across endpoint, identity, SaaS, and cloud signals while partnering with AppSec and technical leaders. Lead the company’s AI security strategy and develop specialized security capabilities.

Lead end-to-end Application Security product and program: set strategy, prioritize roadmap, ship AI-powered threat modeling and code-evaluation surfaces, enable secure-by-design SDLC, enforce CI/CD gates, drive vulnerability prioritization/remediation, establish governance and metrics, and align security initiatives with engineering and executive stakeholders.

Lead design and implementation of secure global network infrastructure. Architect security standards, conduct threat modeling and network assessments, build security automation and tooling, integrate controls with SDN/BGP/MPLS platforms, support incident response, and mentor engineering teams to maintain resilient, observable network security posture.

Lead assessment and mitigation of security risks in the virtualization stack. Build threat models, rubrics, and defenses; partner with kernel, virtualization, and provisioning teams to design and implement mitigations; mentor engineers, manage vulnerability backlog, and promote security best practices across product teams.

Design, implement, and maintain scalable cloud security controls for Vercel's platform. Harden infrastructure using infrastructure-as-code and policy enforcement, secure CI/CD pipelines, perform threat modeling and risk analysis, improve monitoring and incident response, and build platform-level security tooling in collaboration with platform and infrastructure teams.

Own and define IAM strategy for corporate and production environments. Migrate Okta to Terraform, design least-privilege access, automate provisioning/deprovisioning and access reviews, build/manage MDM/MAM tooling, partner with platform and engineering teams, and serve as the IAM subject matter expert across Security, IT, and Engineering.

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.

Provides security engineering and compliance expertise for FedRAMP Cloud Service Providers. Reviews cloud architectures, authorization packages, security controls, system security plans, assessment reports, vulnerability scans, and penetration tests. Leads architecture interviews, identifies technical and documentation gaps, advises government stakeholders on risk and compliance, supports continuous monitoring, and guides vendors on FedRAMP, NIST, FISMA, RMF, and agency requirements.

Designs, implements, and maintains enterprise security solutions; operates EDR, SIEM, web application firewall, and vulnerability-scanning tools; advances Zero Trust maturity; integrates security into DevSecOps, CI/CD, and infrastructure-as-code processes; addresses vulnerabilities and security gaps; develops security performance dashboards; and validates system designs against requirements.

Build developer-facing security services and tools, partner with engineering teams through the SSDLC to threat model and review code, and contribute to security automation (static analysis, vulnerability management, asset inventory) to help Cedar scale secure patient-facing products.

Lead multi-year product strategy for non-human identity and access across MongoDB Atlas, core database, and developer platforms. Drive workload identity federation, programmatic access, AI agent authorization, and developer-first access management. Partner with engineering, UX, and GTM to validate enterprise requirements, prioritize initiatives, and measure adoption. Represent MongoDB externally and mentor PMs to elevate product quality.

Supports enterprise cybersecurity and GRC programs through third-party risk assessments, security testing coordination, corrective action tracking, policy development, compliance support, incident response planning, disaster recovery exercises, and enforcement of technical and administrative controls. Partners with engineering, operations, managed security providers, and internal stakeholders to strengthen security posture across cloud and hybrid environments.

Manage and lead engineering teams building endpoint security software: define and execute roadmaps, oversee SDLC and ISMS compliance, remove blockers, drive secure coding, coordinate with product and architects, recruit and develop staff, and manage budgets and operations.

Designs and advances security architecture for Microsoft’s enterprise productivity environment. The role assesses evolving risk, analyzes systems and telemetry, develops reusable security patterns and tooling, partners with engineering teams on deployment, communicates risk and tradeoffs, and establishes priorities and roadmaps amid incomplete information.

Leads company-wide security governance, compliance, internal IT, risk management, audits, access controls, vendor security, cloud technology standards, incident preparedness, and AI governance. Manages a small team and service providers while remaining hands-on with security and IT operations. Owns SOC 2 Type II and ISO 27001 programs, supports customer security assurance, and establishes ownership, service, and sourcing frameworks across the company.

Own and implement application security across the software development lifecycle for multiple product lines. Define security controls, validation gates, standards, and guardrails; conduct architecture reviews; enhance CI/CD security; triage SAST, SCA, and penetration-testing findings; support incident response; maintain FedRAMP and CJIS compliance; and represent security practices in audits and customer engagements.

Leads 24/7 security operations for federal Oracle systems, including SIEM configuration, threat intelligence, log analysis, digital forensics, incident response, security posture assessments, and audit-log retention. Coordinates with ISSOs on RMF and authorization activities, develops detection rules and playbooks, reports SOC metrics, and manages operational staffing, coaching, escalations, remediation, and compliance evidence.

Lead development of security enforcement integrations that warn or block unsafe AI artifact installations, serve sanitized alternatives, and record audit events. Build reliable event-driven backend systems with queues, webhooks, idempotency, retries, back-pressure, approval flows, dry runs, audit logs, and rollback mechanisms. Integrate third-party security, infrastructure, and identity APIs, with potential future work on fleet-wide revocation controls and security platform integrations.