Senior Cloud Systems Admin

3Core Systems , Inc•Plantation, FL

11d•Hybrid

About The Position

The Cloud Engineer is responsible for designing, building, and maintaining our AWS cloud infrastructure while also serving as a senior generalist across our broader IT infrastructure, including Windows and Linux server environments, networking, identity, and endpoint security. This role blends hands-on cloud architecture and automation with day-to-day systems administration, taking ownership of both our cloud and on-premises environments. The ideal candidate is passionate about modernizing infrastructure through Infrastructure as Code and automation, while also being comfortable diagnosing and resolving complex issues across servers, networks, and endpoints. This role also mentors junior cloud engineers, systems administrators, and technical support specialists, and partners closely with architects and engineers on proofs of concept and key infrastructure initiatives.

Requirements

Experience designing, building, and maintaining secure, scalable cloud infrastructure using Terraform and AWS best practices
Experience implementing and managing AWS multi-account environments via Control Tower
Experience administering cloud-based infrastructure across AWS and Azure
Experience assisting in the transition from traditional server-based architectures to serverless solutions using AWS Lambda
Experience automating infrastructure deployment and application delivery using GitHub Actions and CI/CD pipelines
Experience managing and maintaining Windows and Linux server environments, both on-premises and in the cloud
Experience managing user lifecycles, permissions, and security groups using Okta and local Active Directory
Experience administering endpoint management through Kandji (macOS) and ManageEngine Endpoint Central (Windows)
Experience supporting integration of infrastructure with Okta for identity and access management, including Conditional Access policies
Experience supporting the rollout and ongoing administration of Zscaler for secure network access
Experience coordinating with SecOps teams to ensure SentinelOne coverage
Experience configuring and managing core AWS networking and edge security services (VPC, Transit Gateway, Cloud WAN, ELB, WAF), as well as office networking components including firewalls, VLANs, and hardware inventory
Experience administering and supporting database technologies including MSSQL, MySQL, and PostgreSQL
Experience executing routine security updates, firmware updates, and vulnerability patching across servers and network hardware
Experience monitoring and testing backup operations, ensuring DR protocols are functional and meet RPO/RTO targets
Experience migrating workloads from existing environments into new AWS accounts, ensuring minimal downtime
Experience diagnosing hardware, software, network, and system issues, documenting resolutions and assessing business impact
Experience monitoring and optimizing infrastructure for performance, security, and cost efficiency, implementing improvements as needed
Experience architecting solutions based on business processes and best practices, optimizing for performance, scalability, and cost efficiency
Experience participating in incident response and root cause analysis for infrastructure issues
Experience maintaining clear and up-to-date documentation of infrastructure architecture, procedures, and SOPs

Responsibilities

Design, build, and maintain secure, scalable cloud infrastructure using Terraform and AWS best practices
Implement and manage AWS multi-account environments via Control Tower
Administer cloud-based infrastructure across AWS (primary) and our minor Azure footprint, including instance management, storage scaling, and cost monitoring
Assist in the transition from traditional server-based architectures to serverless solutions using AWS Lambda
Automate infrastructure deployment and application delivery using GitHub Actions and CI/CD pipelines
Manage and maintain Windows and Linux server environments, both on-premises and in the cloud
Manage user lifecycles, permissions, and security groups using Okta and local Active Directory
Administer endpoint management through Kandji (macOS) and ManageEngine Endpoint Central (Windows)
Support integration of infrastructure with Okta for identity and access management, including Conditional Access policies
Support the rollout and ongoing administration of Zscaler for secure network access
Coordinate with our SecOps team to ensure SentinelOne coverage extends across servers and endpoints
Configure and manage core AWS networking and edge security services (VPC, Transit Gateway, Cloud WAN, ELB, WAF), as well as office networking components including firewalls, VLANs, and hardware inventory
Administer and support database technologies including MSSQL, MySQL, and PostgreSQL
Execute routine security updates, firmware updates, and vulnerability patching across servers and network hardware
Monitor and test backup operations, ensuring DR protocols are functional and meet RPO/RTO targets
Migrate workloads from existing environments into new AWS accounts, ensuring minimal downtime
Diagnose hardware, software, network, and system issues, documenting resolutions and assessing business impact
Monitor and optimize infrastructure for performance, security, and cost efficiency, implementing improvements as needed
Architect solutions based on business processes and best practices, optimizing for performance, scalability, and cost efficiency
Participate in incident response and root cause analysis for infrastructure issues
Maintain clear and up-to-date documentation of our infrastructure architecture, procedures, and SOPs