Senior Infrastructure & Security Engineer

Senior Infrastructure & Security Engineer

This range is provided by CDW. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

• We can NOT provide sponsorship or work C2C. W2 ONLY.
• This is a 12-month contract through CDW working for our end client. There is potential for contract extension(s).
• Ability to work 4 days/week on-site in San Francisco (94158 zip) is required. 1 day/week remote work from home.

Overview

Our client is looking for a Senior Infrastructure & Security Engineer to support both IT operations and enterprise security initiatives at their San Francisco HQ. 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.

WHAT YOU'LL DO

Configuration & Security Assessments

• Perform configuration reviews and hardening assessments across SaaS applications, cloud services, and infrastructure components.
• Identify misconfigurations and gaps in security posture; recommend and implement remediation strategies.
• Maintain and evolve baseline configurations and compliance benchmarks aligned with internal policies and recognized standards.
• Support vulnerability management and incident response efforts with configuration insights and forensic analysis.

Infrastructure Operations

• Administer and troubleshoot network components including switches, access points, routers, firewalls, and VPNs.
• Manage virtualized environments and backup systems across hybrid infrastructure.
• Support cloud migration efforts and ensure secure deployment patterns across public cloud platforms.
• Collaborate with development and DevOps teams to ensure secure and scalable infrastructure design.

Security Engineering

• Implement and maintain endpoint protection, identity and access controls, and data loss prevention mechanisms.
• Automate security controls and monitoring using scripting and orchestration tools.
• Assist in audit preparation and documentation of security controls and operational procedures.

WHO YOU ARE AND WHAT YOU BRING

• Minimum 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 (e.g., CIS Benchmarks, NIST, ISO).
• Ability to work independently and manage multiple priorities in a fast-paced environment.
• Excellent communication skills and a collaborative approach to cross-functional work.

Seniority level

• Mid-Senior level

Employment type

• Contract

Job function

• Information Technology

Industries

• IT Services and IT Consulting and Biotechnology Research