Top Senior Cyber Security Jobs in Boston, MA

Own and improve Octus’s enterprise security technology across endpoints, identity, SaaS, email, DLP, AI tools, cloud, and applications. Responsibilities include managing security platforms, hardening systems, tuning SIEM detections, responding to incidents, driving remediation, supporting audits and client reviews, assessing vendor risk, automating workflows, and mentoring teammates. The role requires broad hands-on cybersecurity expertise across Mac and Windows environments, identity platforms, secure web gateways, DLP, compliance frameworks, scripting, and REST APIs.

Build and operate central security systems, automation, tooling, and controls across cloud infrastructure, identity, access, products, partners, and vendors. Develop AI-assisted security workflows, lead external assessments through verified remediation, identify and validate vulnerabilities, guide engineering teams, and participate in incident response. The role requires production security engineering experience, strong programming skills, cloud security expertise, and fintech, payments, or crypto experience.

Lead security architecture and design reviews, define standards for protecting sensitive healthcare data, build automated defenses, improve monitoring and incident response, redirect technical strategy, translate complex security objectives into engineering requirements, and mentor engineers through rigorous code and design reviews.

Own internal offensive security assessments across applications, APIs, cloud infrastructure, and corporate systems. Plan and execute penetration tests, validate vulnerabilities safely, review source code, and partner with engineering teams through remediation and retesting. Build automated security testing tools and workflows, lead adoption of AI-assisted offensive security capabilities, support third-party testing, improve detection and incident response, and participate in on-call responsibilities.

Build and operate security infrastructure protecting MongoDB Atlas across AWS, Azure, and GCP. Responsibilities include hardening Linux hosts and containers, implementing Kubernetes security controls, managing CSPM and workload identity platforms, deploying security controls through Terraform and other IaC tools, and creating monitoring and alerting systems. The role leads initiatives from threat modeling and architecture through implementation, rollout, and ongoing production reliability.

Build and operate security infrastructure for MongoDB Atlas across AWS, Azure, and Google Cloud. Responsibilities include hardening Linux hosts and containers, implementing cloud security controls, workload identity, vulnerability management, Infrastructure-as-Code, runtime threat detection, and monitoring systems. The role leads initiatives from threat modeling and architecture through deployment and long-term production reliability.

Leads enterprise network security architecture, engineering, and modernization across cloud and on-premises environments. Designs firewalls, WAF, DDoS protection, Azure connectivity, microsegmentation, Zero Trust, SASE, and SD-WAN solutions. Serves as a Level 3 incident escalation point, drives root-cause analysis and resilience improvements, establishes automation and DevSecOps standards, and mentors engineers. Partners with stakeholders and vendors to deliver secure, scalable network security platforms.

Lead penetration testing, adversary emulation, assume-breach, and AI red-teaming engagements. Identify exploitable weaknesses, validate security controls and detection capabilities, and provide prioritized remediation guidance. Conduct testing across networks, applications, APIs, cloud, and infrastructure while mapping activity to threat frameworks. Communicate findings to technical and executive audiences, advise clients, develop methodologies and tooling, automate testing, and mentor junior team members.

Own and expand CivilGrid’s security program, including SOC 2 readiness, access controls, endpoint security, threat modeling, vulnerability management, incident response, and customer security reviews. Support AWS infrastructure, GIS servers, reliability practices, observability, SLOs, on-call operations, and post-incident reviews. Partner with engineering, IT, and leadership to embed security and reliability across the SDLC and production systems.

Leads enterprise AI Security and GenAI data protection, owning the AI Gateway from evaluation through deployment and ongoing operations. Designs controls for prompts, uploads, browser traffic, copilots, agents, and integrations; implements monitoring, coaching, redaction, quarantine, and blocking. Integrates telemetry with security and identity platforms, establishes governance and exception processes, measures effectiveness, supports audit readiness, and partners with business and technology teams to enable responsible AI adoption.

Designs, deploys, and operates global network access security using Forescout, Cisco ISE, 802.1X, MAB, RADIUS, and TACACS+. Responsibilities include troubleshooting authentication, managing ISE upgrades and certificates, enforcing segmentation and Zero Trust controls, securing corporate and manufacturing networks, and supporting Cisco access-layer infrastructure. The role also partners across security and networking teams, maintains documentation, supports change windows, and automates NAC operations.

Conduct research on vulnerabilities and risks in AI systems, develop hardware, software, and algorithmic protections for trustworthy AI, and collaborate across research, hardware, software, and product teams. Publish original research and present findings at conferences. The role requires deep expertise in a security area such as applied cryptography, programming languages, software systems, computer architecture, or AI/ML, along with experimental research and strong coding skills.

Build and automate security infrastructure across AWS and Kubernetes, including cryptographic material lifecycle, telemetry pipelines, policy-as-code, compliance monitoring, and incident-response tooling. Develop agentic AI workflows using coding assistants, MCP integrations, and custom harnesses. Apply threat modeling and secure architecture review while partnering with engineering, risk, auditors, vendors, and clients. The role emphasizes production software, cloud-native automation, continuous control monitoring, and eliminating manual security toil.

Build and operate a reliable security platform across hundreds of AWS environments. Responsibilities include security telemetry and OpenSearch infrastructure, GitOps deployments, Kubernetes and AWS security controls, cross-account and multi-region architecture, Python automation, and agentic AI workflows. The role participates in on-call support, security incident enablement, audit evidence automation, and reliability improvements while collaborating with Security Operations, Risk, and SRE teams.

Secures Snyk’s GCP and AWS cloud platforms through threat modeling, IAM hardening, Kubernetes and container security, Terraform and pipeline fixes, CSPM integration, and secure configuration baselines. Uses AI coding agents and MCP integrations to scale infrastructure remediation while reviewing changes for unsafe defaults, excessive permissions, and agent-related risks. Works consultatively with platform teams to implement and measure security improvements.

Design and implement infrastructure security for AWS, Kubernetes, identity, networks, workloads, and CI/CD. Build agentic security tooling, lead detection and incident response, enforce least privilege, conduct architecture reviews, automate vulnerability and compliance monitoring, and guide teams toward secure designs. The role also investigates cloud security events, hardens infrastructure, creates audit evidence, and communicates technical risks to non-technical partners.

Executes end-to-end red team and adversary emulation operations across cloud, identity, network, endpoint, hardware, and operational environments. Develops offensive tooling, implants, and evasion tradecraft; operates and improves AI-driven security agents; discovers and exploits vulnerabilities; and communicates findings to customers and internal security teams. The role also contributes to operational playbooks, product hardening, detection improvements, and scalable offensive security practices.

Lead the design and implementation of Aalyria’s security platform, including identity, authentication, authorization, PKI, workload identity, secrets, key management, audit evidence, and security standards. Build systems that operate securely in commercial, government, classified, and disconnected environments. Set technical direction across teams, mentor engineers, threat-model distributed systems, and operate production services through upgrades, maintenance, and incidents.

Build and operate secure, reliable Azure GPU infrastructure for distributed AI training and reinforcement-learning workloads. Develop fleet-level automation, infrastructure-as-code, remediation, drift detection, and deployment tooling. Troubleshoot multi-node, multi-GPU, networking, performance, and reliability issues while translating ambiguous research needs into production solutions. Partner with engineers, researchers, and stakeholders on architecture, security, and delivery decisions, and contribute through code reviews, technical collaboration, and mentoring.

Leads enterprise AI security and GenAI data protection, owning the AI Gateway from evaluation through deployment and operations. Designs monitoring, coaching, redaction, quarantine, and blocking controls for prompts, uploads, browser traffic, copilots, agents, and integrations. Integrates telemetry with security and identity platforms, establishes governance and exception processes, measures control effectiveness, and supports audit and regulatory readiness while enabling responsible AI adoption.

Provides technical leadership for cybersecurity engineering on AWACS aircraft and ground-system modernization programs. Responsibilities include secure network and communications architecture, RMF compliance, ATO/IATT and POA&M development, cyber risk assessments, avionics and mission-system integration, TEMPEST compliance, security requirements, and design reviews. The role supervises personnel and collaborates with systems, software, avionics, and test engineering teams. Active Secret clearance and significant military aviation cybersecurity experience are required, with 25–35% domestic and international travel.

Assesses and mitigates security risks across applications, systems, networks, and cloud infrastructure. Conducts security assessments, identifies vulnerabilities and compromises, deploys mitigating controls, performs compliance investigations, and develops security guidance, policies, scripts, and tools. The role requires collaboration with IT, engineering, and business units, with emphasis on NIST frameworks, adversarial techniques, malware, intrusion management, FedRAMP, and CMMC environments.

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.

Lead architecture and hands-on development of Microsoft's AI Safety Platform, building observability, detection, investigation, threat-hunting, and distributed data-processing capabilities. Design attack detection infrastructure, correlate high-volume telemetry, apply AI security research, conduct security and privacy reviews, and partner across engineering, science, and incident response teams. Mentor engineers and provide technical leadership for complex AI security systems.

Own and improve network, firewall, cloud, endpoint, identity, email, and SaaS security controls. Responsibilities include firewall administration, VPNs, segmentation, secure architecture, traffic and log analysis, incident investigation, vulnerability remediation, security monitoring, technical project support, compliance evidence, and automation. The role collaborates with Infrastructure and DevOps teams, troubleshoots complex connectivity and security issues, and applies least-privilege, Zero Trust, and defense-in-depth principles.