Host Security Engineer: Endpoint & Infrastructure Defender

Doist; Pleasanton (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Doist is seeking a Host Security Engineer to design and operate enterprise security solutions protecting endpoints, operating systems, and infrastructure in Pleasanton, CA.

You will develop security standards and roadmaps, evaluate new technologies, and lead projects from planning through deployment, collaborating with infrastructure, cloud, networking, and application teams to embed security into new initiatives.

Qualifications

• Design and operate security solutions for endpoints, OS, and infrastructure.
• Develop security standards and roadmaps aligned with industry frameworks.
• Evaluate emerging security technologies and recommend risk-reducing solutions.
• Lead security projects from planning to deployment and operational support.
• Collaborate with infrastructure, networking, cloud, and application teams to embed security into new tech.
• Provide advanced troubleshooting and Tier III support for security platforms and incidents.
• Conduct root cause analysis and recommend improvements to detection, response, and prevention.
• Support vulnerability management initiatives and remediation strategies.
• Participate in architecture reviews to ensure security requirements are met.
• Develop technical documentation, standards, and procedures.
• Assist with automation to improve security operations and response.
• Stay current on evolving cyber threats and best practices.

Responsibilities

• Design and implement enterprise security solutions that improve protection across endpoints, operating systems, and infrastructure.
• Develop security standards, technical roadmaps, and best practices aligned with industry frameworks.
• Evaluate emerging security technologies and recommend solutions that reduce organizational risk.
• Lead security projects from planning and architecture through deployment, validation, and operational support.
• Collaborate with infrastructure, networking, cloud, and application teams to ensure security is incorporated into new technologies and business initiatives.
• Provide advanced troubleshooting and Tier III support for security platforms and enterprise security incidents.
• Conduct root cause analysis and recommend improvements to strengthen detection, response, and prevention capabilities.
• Support vulnerability management initiatives by identifying risks and assisting with remediation strategies.
• Participate in architecture reviews to ensure new technologies meet enterprise security requirements.
• Develop technical documentation, implementation standards, and operational procedures.
• Assist with automation and orchestration initiatives to improve security operations and response efficiency.
• Stay current on evolving cyber threats, attack techniques, and industry best practices.

Job description

Doist is seeking a Host Security Engineer to design and operate enterprise security solutions protecting endpoints, operating systems, and infrastructure in Pleasanton, CA.

You will develop security standards and roadmaps, evaluate new technologies, and lead projects from planning through deployment, collaborating with infrastructure, cloud, networking, and application teams to embed security into new initiatives.