Senior Systems Engineer

Prosperity Life Group, LLC.•Austin, TX

48d•$100,000 - $147,000•Hybrid

About The Position

We’re looking for a Senior Systems Engineer who brings deep infrastructure expertise, a problem-solver mindset, and a passion for building and maintaining resilient, secure systems. In this role, you’ll own and advance our data center, Cloud, and Microsoft 365 environments, with a strong focus on server infrastructure, identity, data protection, and disaster recovery. You’ll play a key role in provisioning, configuring, and optimizing infrastructure across Nutanix HCI, Windows Server, AWS, and Microsoft 365 platforms—while ensuring seamless integration across systems, identity services, and proprietary applications. You’ll lead efforts to modernize legacy infrastructure, harden identity and policy controls, and maintain robust backup, recovery, and monitoring capabilities. This role partners closely with IT teams and business stakeholders to ensure our environment remains scalable, secure, and built for the future—bringing together technical expertise and practical execution to drive meaningful impact across the organization.

Requirements

BS in Computer Science or related discipline, advanced degree desirable.
7+ years of experience as a Systems, Infrastructure, or Senior Network Engineer in an enterprise environment
Broad hands-on experience across server infrastructure, networking (LAN/WAN/WLAN), identity, and cloud platforms
Nutanix: Hands-on experience with Nutanix HCI infrastructure, cluster upgrades, and data protection features
Windows Server: Deep expertise in administering, troubleshooting, and upgrading Windows Server from 2003 through current versions
Active Directory: Extensive experience with AD design, AD Sites and Services, OU hardening, Group Policy management, and hybrid AD architecture
Certificate Services: Strong PKI and certificate lifecycle management experience in enterprise environments, including public certificate authorities such as DigiCert
Entra ID: Proven experience with SSO, SAML integrations, Conditional Access, and identity governance
Intune: Experience managing device compliance, configuration, and patching policies across Windows and mobile platforms
Microsoft 365: Solid M365 administration including Exchange Online, SharePoint, Teams, and OneDrive
SQL Server: Experience deploying and maintaining SQL Server in standalone and clustered configurations
Microsoft Failover Clustering: Experience designing and maintaining Windows Server failover clusters
DNS: Expert-level understanding of public and private DNS, split-horizon configurations, and DNS security
Networking: Strong understanding of TCP/IP, routing protocols (BGP, OSPF, EIGRP), LAN/WAN/WLAN architecture, and enterprise network hardware, including routers, switches, and firewalls; hands-on experience with Fortinet platforms (FortiGate, FortiManager, or FortiAnalyzer)
Data Protection & DR: Experience designing and maintaining backup, replication, and disaster recovery solutions
Mimecast: Experience supporting Mimecast for email security, policy troubleshooting, DMARC enforcement and monitoring, and continuity
Site24x7: Experience configuring and managing infrastructure monitoring, alerting, and reporting
Wasabi: Familiarity with Wasabi object storage for backup and archival use cases

Nice To Haves

AWS infrastructure experience spanning compute, containers, networking, and storage (EC2, Workspaces, ECS/Fargate, ECR, ALB, S3, Direct Connect, CloudFormation); comfortable operating in multi-region, multi-account AWS Organizations environments with an understanding of security boundary design.
Redwood ActiveBatch for enterprise job scheduling and automation
Experience leading legacy-to-modern server platform migrations

Responsibilities

Own and optimize Nutanix HCI infrastructure, including cluster upgrades, health monitoring, and capacity planning
Own Windows Server environments spanning legacy (2003+) through current versions, including hands-on upgrade and migration projects
Deploy, configure, and maintain Microsoft Failover Clusters and SQL Server deployments in clustered and standalone configurations
Support AWS infrastructure and services as a strong complement to on-premises workloads
Perform ongoing performance tuning, capacity planning, and resource optimization to support business growth
Lead legacy-to-modern server upgrade initiatives, ensuring minimal disruption and full documentation of the migration path
Design, implement, and maintain data protection strategies, including backup policies, replication, and retention management
Own disaster recovery planning, testing, and execution to ensure business continuity across all critical systems
Support and optimize Wasabi object storage for backup targets and archival workloads
Leverage Nutanix-native data protection features, including snapshots, replication, and DR runbooks
Serve as the subject matter expert for Active Directory—including AD Sites and Services, OU structure hardening, Group Policy design and enforcement, and schema management
Support hybrid Active Directory environments, including synchronization between on-premises AD and Entra ID
Support and troubleshoot Entra ID for SSO, SAML-based application integrations, Conditional Access policies, and identity governance
Own the enterprise PKI and certificate infrastructure, including CA hierarchies, certificate lifecycle management, renewal processes, and integration with public certificate authorities such as DigiCert
Support and troubleshoot Intune device management policies, including compliance, configuration profiles, and patch management
Serve as the escalation point and subject matter expert for Microsoft 365, including Exchange Online, SharePoint Online, Teams, and OneDrive
Provide deep technical support and guidance on SharePoint architecture, permissions, and content governance across the organization
Troubleshoot, validate, and support Conditional Access policies aligned to Zero Trust principles
Act as the escalation owner for Mimecast email security, including policy troubleshooting, threat protection, DMARC enforcement and monitoring, and continuity services
Serve as the DNS authority for both public and private DNS—managing zones, records, delegation, split-horizon configurations, and DNS security practices
Design, implement, and support network infrastructure, including routers, switches, firewalls (including Fortinet), and connectivity solutions
Leverage deep knowledge of TCP/IP, routing protocols (BGP, OSPF, EIGRP), and network architecture to maintain a stable and resilient infrastructure
Support and optimize storage, compute, network, and security resources across on-premises and cloud environments
Troubleshoot complex network, system, and application issues—resolving connectivity and performance challenges across the environment
Implement and support security tools, protocols, and controls to protect infrastructure and data
Partner on vulnerability remediation efforts, system hardening, and ongoing monitoring of security risks
Leverage Site24x7 for deep infrastructure and application monitoring, alerting, and uptime reporting
Lead efforts to evaluate, test, and deploy infrastructure upgrades, patches, and enhancements
Identify opportunities to improve system performance, scalability, and reliability through proactive analysis and innovation
Partner with IT teams and system administrators to maintain and troubleshoot the environment
Provide support for network-related issues impacting the user community, ensuring timely resolution and minimal disruption
Create and maintain clear documentation of systems, configurations, and processes to support knowledge sharing and operational efficiency