Title: Senior Infrastructure & Security Engineer
Duration: Contract
Location: (Onsite) San Francisco, CA

*Must be local to the San Francisco Bay area and work onsite at least 4 days per week.

We are seeking a Senior Infrastructure & Security Engineer (Contract) to support both IT operations and enterprise security initiatives at our clients San Francisco Headquarters. This is an onsite consultant role (expected to be onsite at least 4 days/week). This role is designed for a senior-level professional with hands-on experience in infrastructure management and a strong focus on configuration assessments across SaaS platforms, cloud environments, and on-premise systems. The position reports directly to the Head of Infrastructure and Information Security and contributes to the reliability, security, and compliance of enterprise systems.

Job Description:

1. Configuration & Security Assessments
1. Perform configuration reviews and hardening assessments across SaaS applications, cloud services, and infrastructure components.
2. Identify misconfigurations and gaps in security posture; recommend and implement remediation strategies.
3. Maintain and evolve baseline configurations and compliance benchmarks aligned with internal policies and recognized standards.
4. Support vulnerability management and incident response efforts with configuration insights and forensic analysis.
2. Infrastructure Operations
1. Administer and troubleshoot network components including switches, access points, routers, firewalls, and VPNs.
2. Manage virtualized environments and backup systems across hybrid infrastructure.
3. Support cloud migration efforts and ensure secure deployment patterns across public cloud platforms.
4. Collaborate with development and DevOps teams to ensure secure and scalable infrastructure design.
3. Security Engineering
1. Implement and maintain endpoint protection, identity and access controls, and data loss prevention mechanisms.
2. Automate security controls and monitoring using scripting and orchestration tools.
3. Assist in audit preparation and documentation of security controls and operational procedures.

Requirements

• 7 years of experience in IT infrastructure and security engineering.
• Strong understanding of SaaS, cloud, and on-premise configuration management.
• Proficiency in scripting languages (e.g., Python, PowerShell) and automation frameworks.
• Experience with network architecture, virtualization, and cloud-native services.
• Familiarity with compliance frameworks and security standards