Senior Systems Engineer (666421)

Location: Westlake,Texas,United States

Summary Description

At Certegy, we’re helping to change the payments landscape by providing faster and more efficient ways to securely connect retailers and consumers. Our technology provides both traditional and cutting-edge techniques for merchants to accept and verify payments. Our clients include the largest retailers in America, many of which have relied on us for over fifty years to provide payments risk management expertise.

Implement and provide support for Microsoft endpoint management technologies across on-premises, hybrid, and cloud-native Microsoft 365 services. Collaborate with leadership to assess organizational needs and establish priorities, ensuring effective support for current software and hardware utilized by the Company. A Senior Systems Engineer also provides mentorship to junior staff, leads troubleshooting efforts, and contributes to strategic technology planning.

Primary Responsibilities

• Architect, configure, deploy, and manage Windows and Linux servers, cloud platforms Azure, AWS), and hybrid environments.
• Lead infrastructure design sessions and produce detailed engineering documentation.
• Recommend and implement improvements for scalability, security, and performance.
• Administer Active Directory, Group Policies, DNS/DHCP, file and print services, and Azure active Directory.
• Manage virtualization platforms like VMware vSphere or Microsoft Hyper-V.
• Design, configure, and manage resources within Microsoft Azure, AWS, or GCP
• Oversee storage systems (SAN, NAS) and backup/recovery solutions.
• Participate in technology road mapping and vendor selection to support infrastructure evolution.
• Automate infrastructure tasks using PowerShell, Terraform, ARM templates, and other tools.
• Ensure compliance with security, best practices, and regulatory requirements.
• Perform system hardening, vulnerability assessments, and patch management.
• Collaborate with leadership on the annual System and Organization Controls Report (SOC) and Penetration Testing.
• Conduct regular disaster recovery (DR) tests and document outcomes.
• Lead infrastructure components of enterprise-wide IT projects (upgrades, migrations, new deployments).
• Enhance system monitoring and alerting using platforms like Splunk, Tenable or native.
• cloud monitoring services.
• Develop and maintain monitoring, alerting, and reporting frameworks using native and third-party tools.
• Manage and troubleshoot network infrastructure components including firewalls, VPNs, routers, switches, and load balancers.
• Implement and manage Identity and Access Management (IAM) technologies including SSO, MFA, and conditional access policies.

Required Qualifications

• Bachelor’s Degree in Computer Science, Information Technology, or a related field (or 8+ years technical experience).
• 5–8 years of experience in systems engineering or equivalent technical roles.
• Deep experience with Windows Server (2016, 2019, 2022), Active Directory, and cloud platforms (especially Azure).
• Strong expertise in virtualization, networking fundamentals, storage, and disaster recovery practices.
• Hands-on scripting experience (PowerShell, Bash, Python).
• Excellent problem-solving skills and attention to detail.
• Strong communication skills for both technical and non-technical audiences.

Work Environment: On Site in Westlake, Texas

We are interested in every qualified candidate who is eligible to work in the United States. Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.