Top Security Engineer Jobs

Designs, implements, configures, tests, and supports enterprise physical security systems, including video surveillance, access control, sensors, and integrations. Provides technical consulting, troubleshooting, architecture recommendations, customer education, design workshops, documentation, and project support. Collaborates with customers, sales teams, project managers, and technology partners to deliver solutions. Requires expertise with physical security platforms, network infrastructure, customer-facing consulting, and occasional off-hours work.

Own infrastructure security for LiveKit’s production platform. Map cloud security posture, prioritize and remediate infrastructure risks, harden IAM, secrets, networks, tenant isolation, and media storage, and build secure infrastructure-as-code guardrails. Partner with compliance teams on PCI-DSS and ISO 27001 controls and automate audit evidence. The role requires cloud, Kubernetes, Terraform, scripting, and production infrastructure security experience, with AI security and real-time media experience preferred.

Designs, implements, tests, and supports enterprise network security systems and web proxy capabilities. Defines security requirements, develops test plans, analyzes network traffic, manages engineering milestones, identifies vulnerabilities, and resolves complex technical issues. Requires expertise in networking, TLS, firewalls, proxies, advanced content filtering, and at least one specialized security technology such as F5 load balancers, malware scanning, NSX Defender, or cloud security solutions.

Conduct application security assessments, discover and validate vulnerabilities, analyze complex codebases, build custom security tooling, perform threat modeling and architecture reviews, and deliver actionable findings to clients. Independently own assessment workstreams, develop proof-of-concept exploits, communicate technical conclusions, review team work, and contribute to security research, open-source tools, and technical writing.

Conduct application security assessments, discover and validate vulnerabilities, analyze code and architectures, perform threat modeling, build security tooling, and develop proof-of-concept exploits. Own scoped assessment components from discovery through client delivery, communicate findings and remediation guidance, and contribute to security research, open-source tools, and technical documentation. The role requires hands-on coding, vulnerability research, memory-corruption knowledge, operating-system familiarity, and independent technical investigation.

Protects IT software, systems, and networks from intrusions and security breaches. Monitors threats and vulnerabilities, enforces security policies, supports compliance, communicates security posture, administers complex security tools, and serves as a security subject matter expert on projects involving departments and vendors. The role is hybrid in Washington State, salaried, and includes on-call responsibilities.

Administer, secure, troubleshoot, and optimize Linux systems in mission-critical environments. Manage servers, services, access controls, patches, networking, firewalls, and vulnerability remediation. Diagnose issues across system, application, and network layers; develop automation with shell scripting or Python; support backup, recovery, integration, documentation, testing, deployment, and specialized defense systems.

Operates security monitoring, incident response, vulnerability management, and audit-readiness activities across corporate IT, cloud, and third-party environments. Investigates alerts, coordinates incident response, maintains playbooks and evidence, tunes SIEM and EDR detections, tracks vulnerability remediation, supports vendor assessments and audits, builds security metrics, and automates repetitive tasks through scripting.

Owns compliance documentation and security control narratives for an Agentic AI platform. Responsibilities include authoring System Security Plans, managing POA&Ms, coordinating audit evidence, supporting RMF and ATO activities, maintaining policies and SOPs, and partnering with cloud, platform, and security engineers. The role validates that documentation reflects implemented infrastructure and supports CMMC, FedRAMP, DoD, and NIST-aligned compliance efforts.

Designs and implements Azure cloud security architectures for critical defense systems. Responsibilities include building security operations data pipelines, configuring Microsoft Sentinel, Log Analytics, Azure Monitor, analytic rules, workbooks, automation, and data connectors. The role researches security tools, develops custom REST API connectors, supports RMF compliance, collaborates with engineering and leadership, and mentors cloud security professionals.

Designs, tests, and implements network boundary security capabilities for DoD enterprise environments. Responsibilities include firewall and security appliance support, switched and routed network security, device hardening, intrusion detection and prevention, vulnerability assessment, traffic analysis, and secure network architecture. The role evaluates complex deployments, resolves interoperability issues, supports hardware and software acquisition, develops innovative solutions, and mentors technical staff.

Operate and secure classified DoD network infrastructure by configuring Cisco routers and switches, maintaining LAN/WAN systems, troubleshooting connectivity, managing access controls and security patches, and supporting incident response and vulnerability remediation. The role also involves RMF compliance, network monitoring, documentation, continuity planning, and integration with enterprise systems in a highly regulated environment.

Assess software applications for vulnerabilities and security risks in DoD environments. Apply secure software development and software lifecycle practices, conduct adversarial analysis, perform static code reviews, validate security controls, and collaborate with developers and information assurance engineers. The role involves documenting findings, recommending countermeasures, managing assignments, and supporting cybersecurity requirements under general supervision.

Safeguard applications, cloud infrastructure, platforms, and organizational data through security engineering, monitoring, incident response, access management, vulnerability remediation, and policy compliance. The role develops recovery plans, operates secure cloud environments, manages COMSEC resources and cryptographic keys, secures websites and transactions, and provides security recommendations to government stakeholders.

Designs and operates Microsoft-focused security controls across cloud, identity, endpoints, data protection, and Microsoft 365. Leads identity and cloud investigations, incident response, threat hunting, detection engineering, privileged-access security, and data-exfiltration prevention. Develops playbooks, automates security workflows, supports post-incident remediation, and partners with legal, privacy, compliance, HR, IT, and security vendors. The role also mentors analysts and provides operational and executive reporting.

Leads global strategy, engineering, deployment, and operations for enterprise PKI, cryptography, and certificate lifecycle management. Oversees certificate authorities, HSMs, key management, automation, compliance, cloud integration, incident response, vendor relationships, and cryptographic risk. Manages security engineering teams and ensures highly available, compliant trust services across cloud, on-premises, and IoT environments.

Monitor, prioritize, and remediate endpoint vulnerabilities based on risk and business impact. Support elevated privilege management, application allowlisting, endpoint configuration reviews, software risk assessments, security reporting, documentation, and automation. The role partners across technical teams to strengthen endpoint security controls, validate remediation, and stay current on emerging threats and security technologies.

Architects and develops secure, scalable backend services and AI-assisted workflows for identity and access security. Leads architecture, feature delivery, performance optimization, testing, reliability, and production operations. Integrates AI, ML, and LLM capabilities for access intelligence, risk detection, and remediation. Partners with cross-functional leaders, explores emerging IAM technologies, conducts code reviews, and mentors engineers while driving enterprise-ready solutions.

Lead Apollo’s application security strategy across engineering, product, platform, data, and AI teams. Responsibilities include security architecture reviews, threat modeling, secure code review, penetration testing, exploit development, vulnerability management, secure-by-default building blocks, AI security standards, automation, and mentoring security engineers and champions. The role requires solving ambiguous, high-scale AppSec problems, influencing cross-functional roadmaps, and delivering measurable reductions in security risk.

The Senior Application Security Engineer will strengthen Apollo’s secure software development lifecycle through application security reviews, threat modeling, code analysis, vulnerability management, penetration testing, remediation, and AppSec tooling. The role includes developing automation, securing AI-powered features, improving security observability, enabling developers, and partnering across Engineering, Product, Platform, Data, Legal, and Security teams. This senior individual contributor will own long-term AppSec goals, resolve ambiguous risks, and drive cross-functional security improvements.

Provides technical leadership for embedded MCU software development focused on Secure Boot ROM, secure bootloaders, SDK security, cryptographic operations, HAL, and BSP development. Leads security feature implementation from design through production, including FPGA and silicon testing, debugging, automated testing, and cross-functional collaboration. Requires deep expertise in ARM architectures, bare-metal and RTOS systems, embedded security, C/C++, Python, and low-level hardware/software debugging.

Develops and maintains RMF security authorization packages for mission-critical defense systems. Documents RMF deliverables, prepares system categorization memoranda, assesses and tracks cybersecurity risks and vulnerabilities, manages POA&Ms, and maintains artifacts and controls in eMASS. Provides control verification and validation while supporting ISSO responsibilities for GMASS-covered systems.

Designs, implements, and strengthens cybersecurity controls across enterprise infrastructure, networks, endpoints, data centers, and branch locations. Responsibilities include firewall and identity security, threat detection, incident response, vulnerability management, system hardening, security monitoring, automation, compliance support, and ransomware protection. The role leads complex investigations and incident response efforts, coordinates remediation across technical teams, evaluates infrastructure risks, and serves as a senior escalation resource.

Configure, integrate, commission, and troubleshoot physical security systems including access control and video surveillance. Provide technical oversight, system design support, documentation, testing, end-user training, and client advisory services. Serve as a subject matter expert and escalation point for installation and troubleshooting issues. The role requires certifications across multiple VMS and access control platforms, physical security configuration experience, lead technician experience, and knowledge of networking, SQL, Windows Server, cameras, controllers, and related security technologies.

Administer, secure, troubleshoot, and optimize Linux systems in mission-critical environments. Responsibilities include Linux server administration, network configuration and troubleshooting, system hardening, vulnerability remediation, scripting, backups, documentation, and integration with mission platforms. The role collaborates with cybersecurity, network, software, and systems engineering teams and supports specialized defense systems.